cyf
83 lines
3.3 KiB
C#
83 lines
3.3 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Data;
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using System.Data.OleDb;
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using System.IO;
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using Zhaizj.Framework.ORM;
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namespace Zhaizj.Framework.Data {
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internal class AccessDatabaseChecker : IDatabaseChecker {
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private static readonly ILog logger = LogManager.GetLogger( typeof( AccessDatabaseChecker ) );
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private String _connectionString;
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private List<String> existTables = new List<String>();
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public String ConnectionString {
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get { return _connectionString; }
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set { _connectionString = value; }
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}
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public DatabaseType DatabaseType {
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get { return DatabaseType.Access; }
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set { }
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}
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public void CheckDatabase() {
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logger.Info( "begin check database" );
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if (strUtil.IsNullOrEmpty( _connectionString )) {
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logger.Info( "connection String is empty. begin to create access database and set connection string" );
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createDatabaseAndSaveConnectionString();
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}
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else {
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String connectionItem = DataFactory.GetDialect( DatabaseType.Access ).GetConnectionItem( _connectionString, ConnectionItemType.Database );
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if (strUtil.IsNullOrEmpty( connectionItem )) {
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logger.Info( "connection String is found, but database is empty. begin to create access database and set connection string" );
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createDatabaseAndSaveConnectionString();
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}
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else if (!File.Exists( connectionItem )) {
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logger.Info( "ConnectionString:" + _connectionString );
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logger.Info( "the database [" + connectionItem + "] is not found. begin to create access database and set connection string" );
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DatabaseBuilder.BuildAccessDb4o( connectionItem );
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}
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}
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}
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public void CheckTable( MappingClass mapping, String db ) {
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logger.Info( "[access] begin check table" );
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OleDbConnection connection = DataFactory.GetConnection( _connectionString, this.DatabaseType ) as OleDbConnection;
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connection.Open();
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IDbCommand cmd = new OleDbCommand();
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cmd.Connection = connection;
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object[] restrictions = new object[4];
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restrictions[3] = "TABLE";
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DataTable oleDbSchemaTable = connection.GetOleDbSchemaTable( OleDbSchemaGuid.Tables, restrictions );
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foreach (DataRow row in oleDbSchemaTable.Rows) {
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existTables.Add( row["TABLE_NAME"].ToString() );
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logger.Info( "table found£º" + row["TABLE_NAME"].ToString() );
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}
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existTables = new AccessTableBuilder().CheckMappingTableIsExist( cmd, db, existTables, mapping );
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connection.Close();
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}
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private void createDatabaseAndSaveConnectionString() {
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_connectionString = DatabaseBuilder.ConnectionStringPrefix + DatabaseBuilder.BuildAccessDb4o();
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logger.Info( "connection String : " + _connectionString );
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DbConfig.SaveConnectionString( _connectionString );
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logger.Info( "the connection String is resetted" );
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}
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public List<String> GetTables() {
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return existTables;
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}
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}
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}
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