102 lines
3.5 KiB
C#
102 lines
3.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Data.Common;
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using Sarand.Net.Standard.Base.Bus;
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using Sarand.Net.Standard.Base.Core;
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namespace Sarand.Net.Standard.Base.Dbas
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{
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//=======================================================================
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// Definitions.
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public enum DbmsType
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{
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General = 0,
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Access = 10,
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MsSql,
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MySql,
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Oracle,
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Pervasive,
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Dbase,
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FoxPro,
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Paradox,
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Interbase,
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Postgres,
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/// <summary>Sage db - No 'AS' in table alias, no 'OUTER' in join type.</summary>
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Sage,
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QBooks,
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SybaseAdvantage,
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}
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public enum SelectLockMode
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{
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/// <summary>No specific lock mode requested - use DBMS default.</summary>
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Default,
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/// <summary>Shared locks (MSSQL default). [MSSQL]</summary>
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ReadCommitted,
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/// <summary>Dirty reads - no locking. [MSSQL]</summary>
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ReadUncommitted,
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/// <summary>Locks all data in query. [MSSQL]</summary>
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RepeatableRead,
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/// <summary>Range lock on data preventing modifications. [MSSQL]</summary>
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Serializable,
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};
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/// <summary>Reserved word delimiters - used by database definitions.</summary>
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public enum DbReservedWordDelim
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{
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None,
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SquareBrackets,
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DoubleQuotes
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};
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public enum DbGetValueType { eDbValueSum, eDbValueMin, eDbValueMax };
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//=======================================================================
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public interface ISacsDatabase : ISacsStateItem
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{
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//-------------------------------------------------------------------
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// Database properties.
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String ConnectionString { get; }
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DbmsType DbmsType { get; }
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String DatabaseName { get; }
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SelectLockMode SelectLockMode { get; set; }
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bool DisplayErrors { get; set; }
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DbConnection CreateConnection(bool forceOdbc = false);
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//-------------------------------------------------------------------
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// Identity generation.
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SysId GetNextId(String objectName, DbUpdateInfo dbUpdateInfo, bool databaseTable = true, String idColumn = "Id");
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int GetNextIdFromTable(String objectName, String idColumn = "Id");
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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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// Database schema.
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HashSet<String> GetTableNames(bool refresh = false);
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List<DbDfnTable> GetTableDfns(bool refresh = false);
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DbDfnTable GetTableDfn(String name, bool refresh = false);
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bool TableExists(String tableName);
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bool ColumnExists(String tableName, String columnName);
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bool IndexExists(String tableName, String indexName);
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// Database info - schema summary.
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IDatabaseInfo CreateDbInfo();
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//-------------------------------------------------------------------
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// Query records.
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String GetSelectQueryPrefix();
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/// <summary>
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/// Execute query directly against database.
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/// <para>- NB Check for null response and error state.</para>
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/// </summary>
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DbResultSet ExecuteQuery(String query);
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int ExecuteNonQuery(String query);
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int ExecuteInsert(String tableName, List<StringPair> columnNameValues);
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int ExecuteUpdate(String tableName, List<StringPair> columnNameValues, String filter);
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int ExecuteDelete(String tableName, String filter);
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// Specific queries.
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long GetRowCount(String tableName, String filter);
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DataValue GetRowValue(String tableName, String columnName, String filter);
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DataValue GetRowValue(String tableName, String columnName, String filter, DbGetValueType getValueType);
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//-------------------------------------------------------------------
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}
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//=======================================================================
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}
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