本文整理汇总了C#中Column.GetIncomingValueConversionExpression方法的典型用法代码示例。如果您正苦于以下问题：C# Column.GetIncomingValueConversionExpression方法的具体用法？C# Column.GetIncomingValueConversionExpression怎么用？C# Column.GetIncomingValueConversionExpression使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Column的用法示例。
在下文中一共展示了Column.GetIncomingValueConversionExpression方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: writeExecuteInsertOrUpdateMethod
private static void writeExecuteInsertOrUpdateMethod(
DBConnection cn, string tableName, bool isRevisionHistoryClass, IEnumerable<Column> keyColumns, Column identityColumn)
{
writer.WriteLine( "private void executeInsertOrUpdate() {" );
writer.WriteLine( "try {" );
if( isRevisionHistoryClass )
writer.WriteLine( DataAccessStatics.GetConnectionExpression( database ) + ".ExecuteInTransaction( delegate {" );
// insert
writer.WriteLine( "if( modType == ModificationType.Insert ) {" );
// If this is a revision history table, write code to insert a new revision when a row is inserted into this table.
if( isRevisionHistoryClass ) {
writer.WriteLine( "var revisionHistorySetup = RevisionHistoryStatics.SystemProvider;" );
writer.WriteLine( getColumnFieldName( columns.PrimaryKeyAndRevisionIdColumn ) + ".Value = revisionHistorySetup.GetNextMainSequenceValue();" );
writer.WriteLine(
"revisionHistorySetup.InsertRevision( System.Convert.ToInt32( " + getColumnFieldName( columns.PrimaryKeyAndRevisionIdColumn ) +
".Value ), System.Convert.ToInt32( " + getColumnFieldName( columns.PrimaryKeyAndRevisionIdColumn ) + ".Value ), " +
DataAccessStatics.GetConnectionExpression( database ) + ".GetUserTransactionId() );" );
}
writer.WriteLine( "var insert = new InlineInsert( \"" + tableName + "\" );" );
writer.WriteLine( "addColumnModifications( insert );" );
if( identityColumn != null ) {
// One reason the ChangeType call is necessary: SQL Server identities always come back as decimal, and you can't cast a boxed decimal to an int.
writer.WriteLine(
"{0}.Value = {1};".FormatWith(
getColumnFieldName( identityColumn ),
identityColumn.GetIncomingValueConversionExpression(
"EwlStatics.ChangeType( insert.Execute( {0} ), typeof( {1} ) )".FormatWith(
DataAccessStatics.GetConnectionExpression( database ),
identityColumn.UnconvertedDataTypeName ) ) ) );
}
else
writer.WriteLine( "insert.Execute( " + DataAccessStatics.GetConnectionExpression( database ) + " );" );
// Future calls to Execute should perform updates, not inserts. Use the values of key columns as conditions.
writer.WriteLine( "modType = ModificationType.Update;" );
writer.WriteLine( "conditions = new List<" + DataAccessStatics.GetTableConditionInterfaceName( cn, database, tableName ) + ">();" );
foreach( var column in keyColumns ) {
writer.WriteLine(
"conditions.Add( new " + DataAccessStatics.GetEqualityConditionClassName( cn, database, tableName, column ) + "( " +
EwlStatics.GetCSharpIdentifierSimple( column.PascalCasedNameExceptForOracle ) + " ) );" );
}
writer.WriteLine( "}" ); // if insert
// update
writer.WriteLine( "else {" );
if( isRevisionHistoryClass )
writer.WriteLine( "copyLatestRevisions( conditions );" );
writer.WriteLine( "var update = new InlineUpdate( \"" + tableName + "\" );" );
writer.WriteLine( "addColumnModifications( update );" );
writer.WriteLine( "conditions.ForEach( condition => update.AddCondition( condition.CommandCondition ) );" );
if( isRevisionHistoryClass )
writer.WriteLine( "update.AddCondition( getLatestRevisionsCondition() );" );
writer.WriteLine( "update.Execute( " + DataAccessStatics.GetConnectionExpression( database ) + " );" );
writer.WriteLine( "}" ); // else
if( isRevisionHistoryClass )
writer.WriteLine( "} );" ); // cn.ExecuteInTransaction
writer.WriteLine( "}" ); // try
writer.WriteLine( "catch( System.Exception e ) {" );
writer.WriteLine( "rethrowAsDataModificationExceptionIfNecessary( e );" );
writer.WriteLine( "throw;" );
writer.WriteLine( "}" ); // catch
writer.WriteLine( "}" ); // method
}