911 lines
40 KiB
C#
911 lines
40 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Data.Common;
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using System.Data.Odbc;
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using Microsoft.Data.SqlClient;
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using System.Linq;
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using Sarand.Net.Standard.Base.App;
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using Sarand.Net.Standard.Base.Core;
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using Sarand.Net.Standard.Base.Bus;
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using Sarand.Net.Standard.Base.Dbas;
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using Sarand.Net.Standard.Dbas.Base;
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using Sarand.Net.Standard.Base.Utils;
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namespace Sarand.Net.Standard.Dbas.Data
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{
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//=======================================================================
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internal class SacsDatabaseOdbc : SacsDatabase
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{
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//-------------------------------------------------------------------
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// Data members.
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private String sqlConnectionString = "";
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private readonly List<DbDfnTable> tables = new List<DbDfnTable>();
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public static readonly String DbCol_CreateOn = "CreateOn";
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public static readonly String DbCol_CreateBy = "CreateBy";
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public static readonly String DbCol_UpdateOn = "UpdateOn";
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public static readonly String DbCol_UpdateBy = "UpdateBy";
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//-------------------------------------------------------------------
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// Construction.
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public SacsDatabaseOdbc (DbmsType dbms, String databaseName, String connectionString) : base(dbms, databaseName, connectionString)
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{
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if (dbms == DbmsType.MsSql)
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sqlConnectionString = connectionString;
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}
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//-------------------------------------------------------------------
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// Properties.
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public String SqlConnectionString
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{
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get { return sqlConnectionString; }
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set
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{
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if (sqlConnectionString.Equals(value)) return;
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sqlConnectionString = value;
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OnConnectionChanged();
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}
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}
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//-------------------------------------------------------------------
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// Connection.
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public override void OnConnectionChanged ()
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{
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}
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public override DbConnection CreateConnection (bool forceOdbc = false)
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{
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if (!forceOdbc && DbmsType == DbmsType.MsSql && !StringUtil.IsEmpty(sqlConnectionString))
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return new SqlConnection(sqlConnectionString);
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return new OdbcConnection(ConnectionString);
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}
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public override DbDataAdapter CreateDataAdapter ()
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{
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return new OdbcDataAdapter();
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}
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//-------------------------------------------------------------------
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// I d e n t i t y G e n e r a t i o n
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//-------------------------------------------------------------------
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private DbDfnTable nextIdTableDfn = null;
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public override SysId GetNextId (String objectName, DbUpdateInfo dbUpdateInfo, bool databaseTable = true, String idColumn = "Id")
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{
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PopulateNextIdTableDfn();
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// Next Id database definitions.
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String colObject = NextIdTable+"."+NextIdColumn_Object;
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String colNextId = NextIdTable+"."+NextIdColumn_NextId;
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String colAliasNextId = "NxtId";
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String filter = "("+colObject+")='"+objectName+"'";
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bool hasCreateCols = (nextIdTableDfn.HasColumnByName (DbCol_CreateOn) && nextIdTableDfn.HasColumnByName (DbCol_CreateBy));
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bool hasUpdateCols = (nextIdTableDfn.HasColumnByName (DbCol_UpdateOn) && nextIdTableDfn.HasColumnByName (DbCol_UpdateBy));
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// Query the data.
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int nextIdValue = 1;
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DbQuery qry = new DbQuery(DbmsType);
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qry.Tables.Add(NextIdTable);
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qry.Columns.Add(colNextId, colAliasNextId);
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qry.Filters.Add(filter);
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//SaLogger.Debug(GetType().Name + ".GetNextId Query: " + qry.BuildQuery());
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DbResultSet_DataReader resultsSet = DbResultSet_DataReader.ExecuteQuery(this,qry.BuildQuery());
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if (resultsSet != null && resultsSet.NextRecord())
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{
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NamedValue.Map values = resultsSet.GetRecordValues();
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nextIdValue = Math.Max(1, (int)values.GetValue(colAliasNextId).AsLong());
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// Update the record with the next available value.
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List<StringPair> updateColumnValues = new List<StringPair>();
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updateColumnValues.Add(NextIdColumn_NextId, (nextIdValue + 1).ToString());
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if (hasUpdateCols)
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{
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updateColumnValues.Add(DbCol_UpdateOn, DbQuery.FormatDateTimeForCondition(DateTime.Now));
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updateColumnValues.Add(DbCol_UpdateBy, SysId.IsValid(dbUpdateInfo.UserId) ? SysId.ToString(dbUpdateInfo.UserId) : "0");
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}
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String updateQry = "Update " + NextIdTable + " Set " + updateColumnValues.Concat("=").Concat(", ") + " Where " + filter;
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//SaLogger.Debug(GetType().Name + ".GetNextId Update query: " + updateQry);
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using (var dbConnection = CreateConnection())
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using (var dbCommand = dbConnection.CreateCommand())
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{
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dbConnection.Open();
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dbCommand.CommandType = System.Data.CommandType.Text;
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dbCommand.CommandText = updateQry;
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dbCommand.ExecuteNonQuery();
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}
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}
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else
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{
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// Object not found on NextId table.
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// If object is a database table, query maximum value.
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if (databaseTable)
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nextIdValue = GetNextIdFromTable(objectName, idColumn);
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// Construct query to store Next Id value.
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List<StringPair> insertColumnValues = new List<StringPair>();
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insertColumnValues.Add(NextIdColumn_Object, "'" + DbQuery.FormatForCondition(objectName) + "'");
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insertColumnValues.Add(NextIdColumn_NextId, (nextIdValue + 1).ToString());
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if (hasCreateCols)
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{
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insertColumnValues.Add(DbCol_CreateOn, DbQuery.FormatDateTimeForCondition(DateTime.Now));
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insertColumnValues.Add(DbCol_CreateBy, SysId.IsValid(dbUpdateInfo.UserId) ? SysId.ToString(dbUpdateInfo.UserId) : "0");
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}
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if (hasUpdateCols)
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{
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insertColumnValues.Add(DbCol_UpdateOn, DbQuery.FormatDateTimeForCondition(DateTime.Now));
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insertColumnValues.Add(DbCol_UpdateBy, SysId.IsValid(dbUpdateInfo.UserId) ? SysId.ToString(dbUpdateInfo.UserId) : "0");
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}
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String insertQry = "Insert Into " + NextIdTable + " (" + insertColumnValues.GetValues(StringPair.Value.Value1).Concat(",") + ") Values (" +insertColumnValues.GetValues(StringPair.Value.Value2).Concat(",") + ")";
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SaLogger.Debug(GetType().Name + ".GetNextId Insert query: " + insertQry);
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using (var dbConnection = CreateConnection())
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using (var dbCommand = dbConnection.CreateCommand())
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{
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dbConnection.Open();
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dbCommand.CommandType = System.Data.CommandType.Text;
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dbCommand.CommandText = insertQry;
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dbCommand.ExecuteNonQuery();
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}
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}
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if (resultsSet != null) resultsSet.Dispose();
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return new SysId(nextIdValue);
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}
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public override int GetNextIdFromTable(String objectName, String idColumn = "Id")
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{
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DataValue maxId = GetRowValue(objectName, "Max(" + idColumn + ")", "");
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if (maxId != null && maxId.GetDataType() != DataValue.DataType.Unknown)
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return Math.Max(0, (int)maxId.AsLong()) + 1;
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return 1;
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}
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public override bool SetMinNextId (String objectName, SysId id, DbUpdateInfo dbUpdateInfo, bool databaseTable = true, String idColumn = "Id", bool force = false)
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{
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PopulateNextIdTableDfn();
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throw new NotSupportedException(GetType().Name + ".SetMinNextId Not yet implemented");
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//return true;
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}
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private void PopulateNextIdTableDfn ()
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{
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if (nextIdTableDfn != null && nextIdTableDfn.Name.Equals(NextIdTable)) return;
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nextIdTableDfn = GetTableDfn(NextIdTable);
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}
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//-------------------------------------------------------------------
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// Q u e r y D a t a b a s e
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//-------------------------------------------------------------------
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// Query records.
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public override IDbDataTable ExecuteQuery (String query)
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{
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String fn = GetType().Name + ".ExecuteQuery";
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ClearErrorState();
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DataTable dataTable = null;
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Log(fn, "Query: " + query, SaMessageLevel.Debug);
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try
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{
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using (DbConnection dbConnection = CreateConnection())
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using (var dbCommand = dbConnection.CreateCommand())
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{
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dbConnection.Open();
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dbCommand.CommandType = System.Data.CommandType.Text;
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dbCommand.CommandText = query;
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dataTable = new DataTable();
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dataTable.Load(dbCommand.ExecuteReader());
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}
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}
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catch (Exception exc)
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{
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SaLogger.Error(fn + " " + ExceptionUtil.GetLogMessage(exc) + "\n\tQuery: " + query, true);
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SetErrorState(exc.Message);
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}
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return new DbDataTable(dataTable);
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}
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//-------------------------------------------------------------------
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/// <summary>Execute a non-query statement and return the row count.</summary>
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public override int ExecuteNonQuery (string query)
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{
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String fn = GetType().Name + ".ExecuteNonQuery";
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ClearErrorState();
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Log(fn, "Query: " + query, SaMessageLevel.Debug);
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using (var dbConnection = CreateConnection())
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using (var dbCommand = dbConnection.CreateCommand())
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{
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try
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{
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dbConnection.Open();
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dbCommand.CommandType = System.Data.CommandType.Text;
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dbCommand.CommandText = query;
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return dbCommand.ExecuteNonQuery();
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}
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catch (Exception exc)
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{
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SaLogger.Error(fn + " " + ExceptionUtil.GetLogMessage(exc) + "\n\tQuery: " + query, true);
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SetErrorState(exc.Message);
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}
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}
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return 0;
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}
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//-------------------------------------------------------------------
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/// <summary>Compile and execute an insert statement and return the row count.</summary>
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public override int ExecuteInsert (String tableName, List<StringPair> columnNameValues)
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{
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String fn = GetType().Name + ".ExecuteInsert";
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ClearErrorState();
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String query =
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"INSERT INTO " + tableName + " " +
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"(" + columnNameValues.GetValues(StringPair.Value.Value1).Concat(", ") + ") " +
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"VALUES (" + columnNameValues.GetValues(StringPair.Value.Value2).Concat(", ") + ")";
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Log(fn, "Query: " + query, SaMessageLevel.Debug);
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using (var dbConnection = CreateConnection())
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using (var dbCommand = dbConnection.CreateCommand())
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{
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try
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{
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dbConnection.Open();
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dbCommand.CommandType = System.Data.CommandType.Text;
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dbCommand.CommandText = query;
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return dbCommand.ExecuteNonQuery();
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}
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catch (Exception exc)
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{
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SaLogger.Error(fn + " " + ExceptionUtil.GetLogMessage(exc) + "\n\tQuery: " + query, true);
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SetErrorState(exc.Message);
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}
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}
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return 0;
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}
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//-------------------------------------------------------------------
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/// <summary>Compile and execute an update statement and return the row count.</summary>
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public override int ExecuteUpdate (String tableName, List<StringPair> columnNameValues, String filter)
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{
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String fn = GetType().Name + ".ExecuteUpdate";
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ClearErrorState();
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String query =
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"UPDATE " + tableName + " " +
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"SET " + columnNameValues.Concat("=").Concat(", ");
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if (!StringUtil.IsEmpty(filter))
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query += (String)" WHERE " + filter;
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Log(fn, "Query: " + query, SaMessageLevel.Debug);
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using (var dbConnection = CreateConnection())
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using (var dbCommand = dbConnection.CreateCommand())
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{
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try
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{
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dbConnection.Open();
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dbCommand.CommandType = System.Data.CommandType.Text;
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dbCommand.CommandText = query;
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return dbCommand.ExecuteNonQuery();
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}
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catch (Exception exc)
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{
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SaLogger.Error(fn + " " + ExceptionUtil.GetLogMessage(exc) + "\n\tQuery: " + query, true);
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SetErrorState(exc.Message);
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}
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}
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return 0;
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}
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//-------------------------------------------------------------------
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/// <summary>Compile and execute a delete statement and return the row count.</summary>
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public override int ExecuteDelete (String tableName, String filter)
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{
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String fn = GetType().Name + ".ExecuteDelete";
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ClearErrorState();
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String query = "DELETE FROM " + tableName;
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if (!StringUtil.IsEmpty(filter))
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query += " WHERE " + filter;
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Log(fn, "Query: " + query, SaMessageLevel.Debug);
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using (var dbConnection = CreateConnection())
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using (var dbCommand = dbConnection.CreateCommand())
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{
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try
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{
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dbConnection.Open();
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dbCommand.CommandType = System.Data.CommandType.Text;
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dbCommand.CommandText = query;
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return dbCommand.ExecuteNonQuery();
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}
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catch (Exception exc)
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{
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SaLogger.Error(fn + " " + ExceptionUtil.GetLogMessage(exc) + "\n\tQuery: " + query, true);
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SetErrorState(exc.Message);
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}
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}
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return 0;
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}
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//-------------------------------------------------------------------
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/// <summary>Retrieve specific row value.</summary>
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public override DataValue GetRowValue (String tableName, String columnName, String filter)
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{
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ClearErrorState();
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try
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{
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String colAlias = "DataValue";
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String query = "SELECT "+columnName+" '"+colAlias+"' FROM "+tableName+(!StringUtil.IsEmpty(filter)?" WHERE "+filter:"");
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using (DbResultSet dbResultSet = DbResultSet_DataReader.ExecuteQuery(this, query))
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{
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if (dbResultSet.NextRecord())
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return dbResultSet.GetRecordValues().GetValue(colAlias);
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else if (dbResultSet.HasErrorState())
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SetErrorState(dbResultSet.ErrorStateMessage);
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}
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}
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catch (Exception exc)
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{
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SaLogger.Error(GetType().Name + ".GetRowValue " + ExceptionUtil.GetLogMessage(exc) + "\n\tTable: " + tableName + ". Column: " + columnName + ". Filter: " + (!StringUtil.IsEmpty(filter) ? filter : "<none>"), true);
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SetErrorState(exc.Message);
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}
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return null;
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}
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//-------------------------------------------------------------------
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/// <summary>Get row count from Table applying optional filter.</summary>
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public override long GetRowCount (String tableName, String filter)
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{
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ClearErrorState();
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DataValue dataValue = GetRowValue(tableName, "Count(*)", filter);
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if (dataValue != null) return dataValue.AsLong();
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return 0;
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}
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//-------------------------------------------------------------------
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/// <summary>Get calculated value from table - Sum, Min or Max.</summary>
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public override DataValue GetRowValue (String tableName, String columnName, String filter, DbGetValueType getValueType)
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{
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ClearErrorState();
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String fn = "";
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if (getValueType == DbGetValueType.eDbValueSum)
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fn = "SUM";
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else if (getValueType == DbGetValueType.eDbValueMin)
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fn = "MIN";
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else if (getValueType == DbGetValueType.eDbValueMax)
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fn = "MAX";
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return GetRowValue(tableName, fn + "(" + columnName + ")", filter);
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}
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//-------------------------------------------------------------------
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// D a t a b a s e S c h e m a
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//-------------------------------------------------------------------
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// NB Always use ODBC connection for querying schema.
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// eg. SQL Connection GetSchema('Indices') doesn't return index columns.
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public override List<String> GetTableNames (bool refresh = false)
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{
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// Only populate table names if not previously done.
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if (tables.Count < 1 || refresh)
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{
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using (DbConnection dbConnection = CreateConnection(true))
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{
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dbConnection.Open();
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PopulateTableNames(dbConnection);
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}
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}
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return tables.GetNames();
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}
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public override List<DbDfnTable> GetTableDfns (bool refresh = false)
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{
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if (refresh) ClearTableDfns();
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// Only populate table names and/or table schemas where not previously done.
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if (tables.Count < 1 || tables.Exists(item => !item.HasColumns()))
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{
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// Use a single connection for table and schaema population.
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using (DbConnection dbConnection = CreateConnection(true))
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{
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dbConnection.Open();
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if (tables.Count < 1)
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PopulateTableNames(dbConnection);
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foreach (DbDfnTable table in tables.ToList())
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{
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if (!table.HasColumns())
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{
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PopulateTableColumns(dbConnection, table);
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PopulateTableIndices(dbConnection, table);
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}
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}
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}
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}
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return tables.ToList();
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}
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public void ClearTableDfns ()
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{
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tables.Clear();
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}
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public override DbDfnTable GetTableDfn (String tableName, bool refresh = false)
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{
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if (!tables.GetNames().Contains(tableName) || refresh)
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{
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// Remove current table definition.
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tables.RemoveAll(item => item.Name.EqualsCI(tableName));
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}
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// Only populate the specified table if required.
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if (!tables.Exists(item => item.Name.EqualsCI(tableName) && item.Columns.Count > 0))
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{
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using (DbConnection dbConnection = CreateConnection(true))
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{
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dbConnection.Open();
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if (!tables.Exists(item => item.Name.EqualsCI(tableName)))
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PopulateTableNames(dbConnection, tableName);
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DbDfnTable table = tables.GetTableByName(tableName);
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if (table != null && (!table.HasColumns() || refresh))
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{
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PopulateTableColumns(dbConnection, table);
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PopulateTableIndices(dbConnection, table);
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}
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}
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}
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return tables.GetTableByName(tableName);
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}
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//-------------------------------------------------------------------
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private void PopulateTableNames (DbConnection dbConnection, String tableNameRestriction = null)
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{
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if (StringUtil.IsEmpty(tableNameRestriction) && tables.Count > 0) return;
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if (!StringUtil.IsEmpty(tableNameRestriction) && tables.Exists(item => item.Name.Equals(tableNameRestriction))) return;
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String fn = GetType().Name+".PopulateTableNames";
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if (SacsSystem.DebugMode) SaLogger.Debug(fn + (!StringUtil.IsEmpty(tableNameRestriction) ? " Table: " + tableNameRestriction : " "));
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String[] restrictions = new String[] { null, null, tableNameRestriction }; // database, owner, table name, type
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using (DataTable tableSchema = dbConnection.GetSchema(OdbcMetaDataCollectionNames.Tables, restrictions))
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{
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//DataSet set = tableSchema.DataSet;
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foreach (DataRow row in tableSchema.Rows)
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{
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//-----------------------------------------------------------
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// Columns are: Name Size Data Type Values
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// 1. TABLE_CAT 255 12 VarChar
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// 2. TABLE_SCHEM 128 12 VarChar
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// 3. TABLE_NAME 128 12 VarChar
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// 4. TABLE_TYPE 128 12 VarChar 'SYSTEM TABLE' 'TABLE' 'VIEW'
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// 'GLOBAL TEMPORARY' 'LOCAL TEMPORARY'
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// 'ALIAS' 'SYNONYM'
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// 5. REMARKS 254 12 VarChar
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// TABLE_CATALOG is the SQL alternative to TABLE_CAT
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// TABLE_QUALIFIER is the ODBC 2.0 alternative to TABLE_CAT (ODBC 3.0).
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// TABLE_SCHEMA is the SQL alternative to TABLE_SCHEM
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// TABLE_OWNER is the ODBC 2.0 alternative to TABLE_SCHEM (ODBC 3.0).
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// Variations:
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// Sage Line 50: TABLE_QUALIFIER, TABLE_OWNER, TABLE_NAME, TABLE_TYPE, REMARKS.
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// Sybase Advantage: QUALIFIERNAME, OWNERNAME, TABLENAME, TYPENAME, REMARKS
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//-----------------------------------------------------------
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String database = String.Empty, schema = String.Empty, tableName = String.Empty, type = String.Empty, remarks = String.Empty;
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foreach (DataColumn column in tableSchema.Columns)
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{
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String colName = column.ColumnName;
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String value = row[colName].ToString();
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if (colName.EqualsCI("TABLE_CAT") || colName.EqualsCI("TABLE_CATALOG") || colName.EqualsCI("TABLE_QUALIFIER") || colName.EqualsCI("QualifierName"))
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database = value;
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else if (colName.EqualsCI("TABLE_SCHEM") || colName.EqualsCI("TABLE_SCHEMA") || colName.EqualsCI("TABLE_OWNER") || colName.EqualsCI("OwnerName"))
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schema = value;
|
|
else if (colName.EqualsCI("TABLE_NAME") || colName.EqualsCI("TableName"))
|
|
tableName = value;
|
|
else if (colName.EqualsCI("TABLE_TYPE") || colName.EqualsCI("TypeName"))
|
|
type = value;
|
|
else if (colName.EqualsCI("REMARKS"))
|
|
remarks = value;
|
|
else
|
|
SaLogger.Warn(fn + " Unrecognised column name: '" + colName + "'");
|
|
}
|
|
// TODO Why is Type sometimes "BASE TABLE"?
|
|
if (!StringUtil.IsEmpty(tableName) && (type.EqualsCI("Table") || type.EqualsCI("Base Table")) && (!schema.EqualsCI("sys") || !tableName.Left(9).EqualsCI("trace_xe_")))
|
|
{
|
|
#if DEBUG
|
|
//SaLogger.Trace(fn+" Database="+database+", Schema="+schema+", Table="+tableName+", Type="+ type);
|
|
#endif
|
|
tables.Add(new DbDfnTable(schema, tableName, remarks));
|
|
}
|
|
}
|
|
}
|
|
List<DbDfnTable> tablesUnsorted = tables.ToList();
|
|
tables.Clear();
|
|
tables.AddRange(tablesUnsorted.OrderBy(item => item.Name).ToList());
|
|
}
|
|
|
|
//-------------------------------------------------------------------
|
|
private void PopulateTableColumns (DbConnection dbConnection, DbDfnTable table)
|
|
{
|
|
String fn = GetType().Name+".PopulateTableColumns";
|
|
if (SacsSystem.DebugMode) SaLogger.Debug(fn + " Table: " + table.Name);
|
|
short columnPos = 0;
|
|
String[] restrictions = new String[] { null, table.Schema, table.Name, null }; // database, owner, table name, column name
|
|
using (DataTable columnSchema = dbConnection.GetSchema(OdbcMetaDataCollectionNames.Columns, restrictions))
|
|
{
|
|
foreach (DataRow row in columnSchema.Rows)
|
|
{
|
|
//-----------------------------------------------------------
|
|
// Columns are: Name Size Data Type Values
|
|
// 1. TABLE_CAT 255 12 VarChar
|
|
// 2. TABLE_SCHEM 128 12 VarChar
|
|
// 3. TABLE_NAME 128 12 VarChar
|
|
// 4. COLUMN_NAME 128 12 VarChar
|
|
// 5. DATA_TYPE 5 5 SmallInt
|
|
// 6. TYPE_NAME 64 12 VarChar
|
|
// 7. COLUMN_SIZE 10 4 Integer (Counter)
|
|
// 8. BUFFER_LENGTH 10 4 Integer (Counter)
|
|
// 9. DECIMAL_DIGITS 5 5 SmallInt
|
|
// 10. NUM_PREC_RADIX 5 5 SmallInt 10 or 2.
|
|
// 11. NULLABLE 5 5 SmallInt SQL_NO_NULLS,SQL_NULLABLE,SQL_NULLABLE_UNKNOWN
|
|
// 12. REMARKS 254 12 VarChar
|
|
// 13. COLUMN_DEF 128 12 VarChar Default value.
|
|
// 14. SQL_DATA_TYPE 5 5 SmallInt
|
|
// 15. SQL_DATETIME_SUB 5 5 SmallInt
|
|
// 16. CHAR_OCTET_LENGTH 10 4 Integer (Counter)
|
|
// 17. ORDINAL_POSITION 10 4 Integer (Counter)
|
|
// 18. IS_NULLABLE 128 12 VarChar 'YES' or 'NO'
|
|
// 19. ORDINAL 10 4 Integer (Counter)
|
|
// Alternative column names:
|
|
// ODBC 2.0 column ODBC 3.x column
|
|
// TABLE_QUALIFIER TABLE_CAT
|
|
// TABLE_OWNER TABLE_SCHEM
|
|
// PRECISION COLUMN_SIZE
|
|
// LENGTH BUFFER_LENGTH
|
|
// SCALE DECIMAL_DIGITS
|
|
// RADIX NUM_PREC_RADIX
|
|
// SQL Server columns:
|
|
// TABLE_CATALOG, TABLE_SCHEMA, ORDINAL_POSITION, COLUMN_DEFAULT
|
|
// CHARACTER_MAXIMUM_LENGTH, CHARACTER_OCTET_LENGTH
|
|
// NUMERIC_PRECISION, NUMERIC_PRECISION_RADIX, NUMERIC_SCALE, DATETIME_PRECISION
|
|
// CHARACTER_SET_CATALOG, CHARACTER_SET_SCHEMA, CHARACTER_SET_NAME, COLLATION_CATALOG
|
|
// IS_SPARSE, IS_COLUMN_SET, IS_FILESTREAM
|
|
// SQL Server columns returned by ODBC conection:
|
|
// NUM_PREC_RADIX, COLUMN_DEF, SQL_DATA_TYPE, SQL_DATETIME_SUB, CHAR_OCTET_LENGTH
|
|
// SS_IS_SPARSE, SS_IS_COLUMN_SET, SS_IS_COMPUTED, SS_UDT_CATALOG_NAME, SS_UDT_SCHEMA_NAME
|
|
// SS_UDT_ASSEMBLY_TYPE_NAME, SS_XML_SCHEMACOLLECTION_CATALOG_NAME, SS_XML_SCHEMACOLLECTION_SCHEMA_NAME, SS_XML_SCHEMACOLLECTION_NAME, SS_DATA_TYPE
|
|
// Sage ODBC data sources quote the following columns:
|
|
// TABLE_QUALIFIER,TABLE_OWNER,TABLE_NAME,COLUMN_NAME,DATA_TYPE,
|
|
// TYPE_NAME,PRECISION,LENGTH,SCALE,RADIX,NULLABLE,REMARKS
|
|
// Sybase Advantage data sources quote the following columns:
|
|
// QUALIFIERNAME,OWNERNAME,TABLENAME,colName,TYPE
|
|
// TYPENAME,PRECISION,LENGTH,SCALE,RADIX,NULLABLE
|
|
// REMARKS,DEFAULT,DATATYPE,DATETIME_SUBTYPE
|
|
// OCTET_LENGTH,ORDINAL_POSITION,IS_NULLABLE
|
|
// Notes.
|
|
// - SQL Connection doesn't show if a column is Identity.
|
|
// - Unclear how to deterine column size for datetime values between SQL and ODBC.
|
|
//-----------------------------------------------------------
|
|
String database = String.Empty, schema = String.Empty, tableName = String.Empty, columnName = String.Empty, nativeDataTypeName = String.Empty, remarks = String.Empty;
|
|
short nativeDataType = 0, decimalDigits = 0;
|
|
long columnSize = 0, bufferLen = 0;
|
|
DbColumnNullable nullable = DbColumnNullable.Unknown;
|
|
bool isIdentity = false, isNullable = false;
|
|
foreach (DataColumn column in columnSchema.Columns)
|
|
{
|
|
String colName = column.ColumnName;
|
|
String value = row[colName].ToString();
|
|
//if (columnName.EqualsCI("CreateOn")) SaLogger.Debug(GetType().Name+".PopulateTableColumns Schema column name: " + colName + " [" + value + "]");
|
|
if (colName.EqualsCI("TABLE_CAT") || colName.EqualsCI("TABLE_CATALOG") || colName.EqualsCI("TABLE_QUALIFIER") || colName.EqualsCI("QualifierName"))
|
|
database = value;
|
|
else if (colName.EqualsCI("TABLE_SCHEM") || colName.EqualsCI("TABLE_SCHEMA") || colName.EqualsCI("TABLE_OWNER") || colName.EqualsCI("OwnerName"))
|
|
schema = value;
|
|
else if (colName.EqualsCI("TABLE_NAME") || colName.EqualsCI("TableName"))
|
|
tableName = value;
|
|
else if (colName.EqualsCI("Column_Name") || colName.EqualsCI("ColumnName"))
|
|
columnName = value;
|
|
else if (colName.EqualsCI("Data_Type") || colName.EqualsCI("Type"))
|
|
{
|
|
if (value.IsNumeric(true))
|
|
nativeDataType = value.ToShort();
|
|
else
|
|
{
|
|
// SQL returns data type name (non numeric).
|
|
nativeDataTypeName = value;
|
|
nativeDataType = OdbcUtil.GetSqlNativeDataType(value);
|
|
}
|
|
}
|
|
else if (colName.EqualsCI("Type_Name") || colName.EqualsCI("TypeName"))
|
|
{
|
|
nativeDataTypeName = value;
|
|
if (value.EndsWith(" identity"))
|
|
{
|
|
nativeDataTypeName = value.Left(value.Length - " identity".Length);
|
|
isIdentity = true;
|
|
}
|
|
}
|
|
else if (colName.EqualsCI("Column_Size") || colName.EqualsCI("CHARACTER_MAXIMUM_LENGTH") || colName.EqualsCI("NUMERIC_PRECISION") || colName.EqualsCI("DATETIME_PRECISION") || colName.EqualsCI("Precision"))
|
|
{
|
|
if (!StringUtil.IsEmpty(value)) columnSize = value.ToLong();
|
|
if (colName.EqualsCI("CHARACTER_MAXIMUM_LENGTH") && value.Equals("-1")) columnSize = 0;
|
|
}
|
|
else if (colName.EqualsCI("Buffer_Length") || colName.EqualsCI("Length"))
|
|
{
|
|
if (!StringUtil.IsEmpty(value)) bufferLen = value.ToLong();
|
|
}
|
|
else if (colName.EqualsCI("Decimal_Digits") || colName.EqualsCI("Scale") || colName.EqualsCI("NUMERIC_SCALE"))
|
|
{
|
|
if (!StringUtil.IsEmpty(value)) decimalDigits = value.ToShort();
|
|
}
|
|
else if (colName.EqualsCI("Nullable"))
|
|
{
|
|
if (!StringUtil.IsEmpty(value)) nullable = (DbColumnNullable)value.ToShort();
|
|
}
|
|
else if (colName.EqualsCI("Is_Nullable"))
|
|
isNullable = !value.EqualsCI("No");
|
|
else if (colName.EqualsCI("REMARKS"))
|
|
remarks = value;
|
|
// SqlServer specific.
|
|
else if (colName.EqualsCI("ORDINAL_POSITION")) { }
|
|
else if (colName.EqualsCI("COLUMN_DEFAULT")) { }
|
|
else if (colName.EqualsCI("CHARACTER_OCTET_LENGTH")) { }
|
|
else if (colName.EqualsCI("NUMERIC_PRECISION_RADIX")) { }
|
|
else if (colName.EqualsCI("CHARACTER_SET_CATALOG")) { }
|
|
else if (colName.EqualsCI("CHARACTER_SET_SCHEMA")) { }
|
|
else if (colName.EqualsCI("CHARACTER_SET_NAME")) { }
|
|
else if (colName.EqualsCI("COLLATION_CATALOG")) { }
|
|
else if (colName.EqualsCI("IS_SPARSE")) { }
|
|
else if (colName.EqualsCI("IS_COLUMN_SET")) { }
|
|
else if (colName.EqualsCI("IS_FILESTREAM")) { }
|
|
// SQL Server ODBC.
|
|
else if (colName.EqualsCI("SS_IS_IDENTITY")) isIdentity = value.ToBool();
|
|
else if (colName.EqualsCI("NUM_PREC_RADIX")) { }
|
|
else if (colName.EqualsCI("COLUMN_DEF")) { }
|
|
else if (colName.EqualsCI("SQL_DATA_TYPE")) { }
|
|
else if (colName.EqualsCI("SQL_DATETIME_SUB")) { }
|
|
else if (colName.EqualsCI("CHAR_OCTET_LENGTH")) { }
|
|
else if (colName.EqualsCI("SS_IS_SPARSE")) { }
|
|
else if (colName.EqualsCI("SS_IS_COLUMN_SET")) { }
|
|
else if (colName.EqualsCI("SS_IS_COMPUTED")) { }
|
|
else if (colName.EqualsCI("SS_UDT_CATALOG_NAME")) { }
|
|
else if (colName.EqualsCI("SS_UDT_SCHEMA_NAME")) { }
|
|
else if (colName.EqualsCI("SS_UDT_ASSEMBLY_TYPE_NAME")) { }
|
|
else if (colName.EqualsCI("SS_XML_SCHEMACOLLECTION_CATALOG_NAME")) { }
|
|
else if (colName.EqualsCI("SS_XML_SCHEMACOLLECTION_SCHEMA_NAME")) { }
|
|
else if (colName.EqualsCI("SS_XML_SCHEMACOLLECTION_NAME")) { }
|
|
else if (colName.EqualsCI("SS_DATA_TYPE")) { }
|
|
// Unrecognised columns.
|
|
else SaLogger.Debug(GetType().Name + ".PopulateTableColumns Unrecognised Schema column name: " + colName + " [" + value + "]");
|
|
}
|
|
if (!StringUtil.IsEmpty(columnName))
|
|
{
|
|
//SaLogger.Debug(GetType().Name+".PopulateTableColumns Database=" + database + ", Schema=" + schema + ", Table=" + tableName + ", Column=" + columnName);
|
|
DbDfnColumn column = new DbDfnColumn(schema, tableName, ++columnPos, columnName);
|
|
column.DataTypeNative = nativeDataType;
|
|
column.DataTypeNameNative = nativeDataTypeName;
|
|
DbColumnDataType dataType = OdbcUtil.OdbcToDataType(nativeDataType);
|
|
column.DataType = dataType;
|
|
column.IsIdentity = isIdentity;
|
|
column.BufferLen = bufferLen;
|
|
column.Size = columnSize;
|
|
column.DecimalDigits = decimalDigits;
|
|
column.Nullable = nullable;
|
|
column.IsNullable = isNullable;
|
|
column.Remarks = remarks;
|
|
table.AddColumn(column);
|
|
}
|
|
}
|
|
}
|
|
// Additional logic for SQL connections.
|
|
SqlConnection sqlConnection = dbConnection as SqlConnection;
|
|
if (sqlConnection != null)
|
|
{
|
|
// Retrieve additional information via SqlDataReader.
|
|
using (SqlCommand sqlCommand = sqlConnection.CreateCommand())
|
|
{
|
|
sqlCommand.CommandText = "Select Top 1 * From [" + table.Name + "]";
|
|
using (SqlDataReader sqlDataReader = sqlCommand.ExecuteReader(CommandBehavior.SchemaOnly))
|
|
using (DataTable dataTable = sqlDataReader.GetSchemaTable())
|
|
{
|
|
foreach (DataRow row in dataTable.Rows)
|
|
{
|
|
String columnName = "";
|
|
bool isIdentity = false;
|
|
foreach (DataColumn col in dataTable.Columns)
|
|
{
|
|
String value = row[col].ToString();
|
|
if (col.ColumnName.EqualsCI("ColumnName")) columnName = value;
|
|
else if (col.ColumnName.EqualsCI("IsIdentity")) isIdentity = value.ToBool();
|
|
//if (columnName.EqualsCI("CreateOn")) SaLogger.Debug(GetType().Name+".PopulateTableColumns Column name: " + col.ColumnName + " [" + value + "]");
|
|
}
|
|
DbDfnColumn columnDfn = table.Columns.GetColumnByName(columnName);
|
|
if (columnDfn != null)
|
|
{
|
|
if (isIdentity) columnDfn.IsIdentity = isIdentity;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//-------------------------------------------------------------------
|
|
private void PopulateTableIndices (DbConnection dbConnection, DbDfnTable table)
|
|
{
|
|
String fn = GetType().Name+".PopulateTableIndices";
|
|
String[] restrictions = new String[] { null, table.Schema, table.Name }; // database, owner, table name
|
|
using (DataTable columnSchema = dbConnection.GetSchema(OdbcMetaDataCollectionNames.Indexes, restrictions))
|
|
{
|
|
foreach (DataRow row in columnSchema.Rows)
|
|
{
|
|
//---------------------------------------------------------
|
|
// Columns are: Name Size Data Type Values
|
|
// 1. TABLE_CAT 255 12 VarChar
|
|
// Catalog name of the table to which the statistic or index applies.
|
|
// 2. TABLE_SCHEM 128 12 VarChar
|
|
// Schema name of the table to which the statistic or index applies.
|
|
// 3. TABLE_NAME 128 12 VarChar
|
|
// Table name of the table to which the statistic or index applies.
|
|
// 4. NON_UNIQUE 5 5 SmallInt
|
|
// Indicates whether the index prohibits duplicate values (SQL_TRUE or SQL_FALSE).
|
|
// 5. INDEX_QUALIFIER VarChar
|
|
// The identifier that is used to qualify the index name doing a DROP INDEX.
|
|
// 6. INDEX_NAME VarChar Index name.
|
|
// 7. TYPE SmallInt
|
|
// Type of information being returned:
|
|
// 0 SQL_TABLE_STAT indicates a statistic for the table (in the CARDINALITY or PAGES column).
|
|
// ? SQL_INDEX_BTREE indicates a B-Tree index.
|
|
// 1 SQL_INDEX_CLUSTERED indicates a clustered index.
|
|
// ? SQL_INDEX_CONTENT indicates a content index.
|
|
// 2 SQL_INDEX_HASHED indicates a hashed index.
|
|
// 3 SQL_INDEX_OTHER indicates another type of index.
|
|
// 8. ORDINAL_POSITION SmallInt
|
|
// Column sequence number in index (starting with 1).
|
|
// 9. COLUMN_NAME VarChar
|
|
// Column name. If the column is based on an expression,
|
|
// such as SALARY + BENEFITS, the expression is returned.
|
|
// 10. ASC_OR_DESC Char(1)
|
|
// Sort sequence for the column: "A" for ascending; "D" for descending.
|
|
// 11. CARDINALITY Integer
|
|
// Number of rows in table if TYPE is SQL_TABLE_STAT.
|
|
// Number of unique values in the index if TYPE is not SQL_TABLE_STAT.
|
|
// 12. PAGES Integer
|
|
// Number of pages for the table if TYPE is SQL_TABLE_STAT.
|
|
// Number of pages for the index if TYPE is not SQL_TABLE_STAT.
|
|
// 13. FILTER_CONDITION VarChar
|
|
// If the index is a filtered index, this is the filter condition, such as 'SALARY > 30000'.
|
|
// Alternative column names:
|
|
// ODBC 2.0 column ODBC 3.x column
|
|
// TABLE_QUALIFIER TABLE_CAT
|
|
// TABLE_OWNER TABLE_SCHEM
|
|
// SEQ_IN_INDEX ORDINAL_POSITION
|
|
// COLLATION ASC_OR_DESC
|
|
// Sybase Advantage column names:
|
|
// QUALIFIERNAME,OWNERNAME,TABLENAME,NONUNIQUE
|
|
// INDEXQUALIFIERNAME,INDEXNAME,TYPE,SEQININDEX
|
|
// COLUMNNAME,COLLATION,CARDINALITY,PAGES,FILTER
|
|
//---------------------------------------------------------
|
|
String database = String.Empty, schema = String.Empty, tableName = String.Empty, indexQualifier = String.Empty, indexName = String.Empty, columnName = String.Empty, ascOrDesc = String.Empty, filterCondition = String.Empty;
|
|
bool unique = false, primary = false, clustered = false, nullable = false;
|
|
int indexType = 0;
|
|
short ordinalPos = 0;
|
|
int cardinality = 0, pages = 0;
|
|
foreach (DataColumn column in columnSchema.Columns)
|
|
{
|
|
String colName = column.ColumnName;
|
|
String value = row[colName].ToString();
|
|
if (colName.EqualsCI("TABLE_CAT") || colName.EqualsCI("TABLE_QUALIFIER") || colName.EqualsCI("QualifierName"))
|
|
database = value;
|
|
else if (colName.EqualsCI("TABLE_SCHEM") || colName.EqualsCI("TABLE_OWNER") || colName.EqualsCI("OwnerName"))
|
|
schema = value;
|
|
else if (colName.EqualsCI("TABLE_NAME") || colName.EqualsCI("TableName"))
|
|
tableName = value;
|
|
else if (colName.EqualsCI("NON_UNIQUE") || colName.EqualsCI("NONUNIQUE"))
|
|
unique = (value.ToShort() == 0);
|
|
else if (colName.EqualsCI("INDEX_QUALIFIER") || colName.EqualsCI("INDEXQUALIFIERNAME"))
|
|
indexQualifier = value;
|
|
else if (colName.EqualsCI("INDEX_NAME") || colName.EqualsCI("INDEXNAME"))
|
|
indexName = value;
|
|
else if (colName.EqualsCI("TYPE"))
|
|
indexType = value.ToInt();
|
|
else if (colName.EqualsCI("TYPE_DESC"))
|
|
{
|
|
if (value.EqualsCI("CLUSTERED"))
|
|
clustered = true;
|
|
}
|
|
else if (colName.EqualsCI("ORDINAL_POSITION") || colName.EqualsCI("SEQININDEX"))
|
|
ordinalPos = value.ToShort();
|
|
else if (colName.EqualsCI("Column_Name") || colName.EqualsCI("ColumnName"))
|
|
columnName = value;
|
|
else if (colName.EqualsCI("ASC_OR_DESC"))
|
|
ascOrDesc = value;
|
|
else if (colName.EqualsCI("CARDINALITY"))
|
|
cardinality = value.ToInt();
|
|
else if (colName.EqualsCI("PAGES"))
|
|
pages = value.ToInt();
|
|
else if (colName.EqualsCI("FILTER_CONDITION") || colName.EqualsCI("FILTER"))
|
|
filterCondition = value;
|
|
//else SaLogger.Debug(GetType().Name+".PopulateTableIndices Unrecognised Schema column name: "+colName);
|
|
//SaLogger.Debug(GetType().Name+".PopulateTableIndices Column name: " + colName+", Value="+value);
|
|
}
|
|
|
|
//-------------------------------------------------------
|
|
String debugIndex = "PK_SaAttrUpdate";
|
|
if (indexName.EqualsCI(debugIndex) && false)
|
|
{
|
|
/*
|
|
StockTracker Address table.
|
|
SQL:
|
|
Column: constraint_catalog. Value: SaStockTracker_Solent_STN
|
|
Column: constraint_schema. Value: dbo
|
|
Column: constraint_name. Value: PK_Address
|
|
Column: table_catalog. Value: SaStockTracker_Solent_STN
|
|
Column: table_schema. Value: dbo
|
|
Column: table_name. Value: Address
|
|
Column: index_name. Value: PK_Address
|
|
Column: type_desc. Value: CLUSTERED
|
|
ODBC:
|
|
Column: TABLE_CAT. Value: SaStockTracker_Solent_STN
|
|
Column: TABLE_SCHEM. Value: dbo
|
|
Column: TABLE_NAME. Value: Address
|
|
Column: NON_UNIQUE. Value: 0
|
|
Column: INDEX_QUALIFIER. Value: Address
|
|
Column: INDEX_NAME. Value: PK_Address
|
|
Column: TYPE. Value: 1
|
|
Column: ORDINAL_POSITION. Value: 1
|
|
Column: COLUMN_NAME. Value: Id
|
|
Column: ASC_OR_DESC. Value: A
|
|
Column: CARDINALITY. Value: 6
|
|
Column: PAGES. Value: 1
|
|
Column: FILTER_CONDITION. Value:
|
|
*/
|
|
foreach (DataColumn column in columnSchema.Columns)
|
|
{
|
|
String colName = column.ColumnName;
|
|
String value = row[colName].ToString();
|
|
SaLogger.Debug(debugIndex + " Column: " + colName + ". Value: " + value);
|
|
}
|
|
}
|
|
|
|
//-------------------------------------------------------
|
|
if (!StringUtil.IsEmpty(indexName))
|
|
{
|
|
//SaLogger.Debug(GetType().Name+".PopulateTableIndices Database=" + database + ", Schema=" + schema + ", Table=" + tableName + ", Index="+indexName+", Column=" + columnName);
|
|
// Retrieve index or populate if not found.
|
|
DbDfnIndex index = table.GetIndexByName(indexName);
|
|
if (index == null)
|
|
{
|
|
index = new DbDfnIndex(schema, tableName, indexName, unique);
|
|
index.IndexType = indexType;
|
|
index.Primary = primary;
|
|
index.Clustered = clustered;
|
|
index.Nullable = nullable;
|
|
index.Pages = pages;
|
|
index.UniqueValues = cardinality;
|
|
table.AddIndex(index);
|
|
}
|
|
// Add column to index:
|
|
if (!StringUtil.IsEmpty(columnName))
|
|
{
|
|
DbDfnIndexColumn indexColumn = new DbDfnIndexColumn(ordinalPos, columnName, (!ascOrDesc.EqualsCI("D")));
|
|
index.AddColumn(indexColumn);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// Attempt to retrieve included columns (SQL only).
|
|
SqlConnection sqlConnection = dbConnection as SqlConnection;
|
|
if (sqlConnection != null)
|
|
{
|
|
using (DataTable columnSchema = dbConnection.GetSchema("IndexColumns", restrictions))
|
|
{
|
|
foreach (DataRow row in columnSchema.Rows)
|
|
{
|
|
foreach (DataColumn column in columnSchema.Columns)
|
|
{
|
|
String colName = column.ColumnName;
|
|
String value = row[colName].ToString();
|
|
String constraintCatalog, constraintSchema, constraintName, tableCatalog, tableSchema, tableName, columnName, ordinalPosition, keyType, indexName;
|
|
#if DEBUG
|
|
//SaLogger.Trace(fn+" Column name=" + colName);
|
|
#endif
|
|
if (colName.EqualsCI("constraint_catalog"))
|
|
constraintCatalog = value;
|
|
else if (colName.EqualsCI("constraint_schema"))
|
|
constraintSchema = value;
|
|
else if (colName.EqualsCI("constraint_name"))
|
|
constraintName = value;
|
|
else if (colName.EqualsCI("table_catalog"))
|
|
tableCatalog = value;
|
|
else if (colName.EqualsCI("table_schema"))
|
|
tableSchema = value;
|
|
else if (colName.EqualsCI("table_name"))
|
|
tableName = value;
|
|
else if (colName.EqualsCI("column_name"))
|
|
columnName = value;
|
|
else if (colName.EqualsCI("ordinal_position"))
|
|
ordinalPosition = value;
|
|
else if (colName.EqualsCI("KeyType"))
|
|
keyType = value;
|
|
else if (colName.EqualsCI("index_name"))
|
|
indexName = value;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//-------------------------------------------------------------------
|
|
}
|
|
//=======================================================================
|
|
}
|