protected override IBuildContext BuildMethodCall(ExpressionBuilder builder, MethodCallExpression methodCall,
BuildInfo buildInfo)
{
var isHaving = methodCall.Method.Name == "Having";
var sequence = builder.BuildSequence(new BuildInfo(buildInfo, methodCall.Arguments[0]));
var condition = (LambdaExpression)methodCall.Arguments[1].Unwrap();
var result = builder.BuildWhere(buildInfo.Parent, sequence, condition, !isHaving, isHaving);
result.SetAlias(condition.Parameters[0].Name);
return(result);
}
protected override IBuildContext BuildMethodCall(ExpressionBuilder builder, MethodCallExpression methodCall,
BuildInfo buildInfo)
{
var sequence = builder.BuildSequence(new BuildInfo(buildInfo, methodCall.Arguments[0]));
if (methodCall.Arguments.Count == 2)
{
sequence = builder.BuildWhere(buildInfo.Parent, sequence,
(LambdaExpression)methodCall.Arguments[1].Unwrap(), false);
}
sequence.Select.EQueryType = EQueryType.Delete;
// Check association.
//
var ctx = sequence as SelectContext;
if (ctx != null && ctx.IsScalar)
{
var res = ctx.IsExpression(null, 0, RequestFor.Association);
var associatedTableContext = res.Context as TableBuilder.AssociatedTableContext;
if (res.Result && associatedTableContext != null)
{
sequence.Select.Delete.Table = associatedTableContext.SqlTable;
}
else
{
res = ctx.IsExpression(null, 0, RequestFor.Table);
var tableContext = res.Context as TableBuilder.TableContext;
if (res.Result && tableContext != null)
{
if (sequence.Select.From.Tables.Count == 0 ||
sequence.Select.From.Tables.First.Value.Source != tableContext.Select)
{
sequence.Select.Delete.Table = tableContext.SqlTable;
}
}
}
}
return(new DeleteContext(buildInfo.Parent, sequence));
}
protected override IBuildContext BuildMethodCall(ExpressionBuilder builder, MethodCallExpression methodCall,
BuildInfo buildInfo)
{
var sequence = builder.BuildSequence(new BuildInfo(buildInfo, methodCall.Arguments[0])
{
CopyTable = true
});
if (methodCall.Arguments.Count == 2)
{
var condition = (LambdaExpression)methodCall.Arguments[1].Unwrap();
if (methodCall.Method.Name == "All")
{
condition = Expression.Lambda(Expression.Not(condition.Body), condition.Name, condition.Parameters);
}
sequence = builder.BuildWhere(buildInfo.Parent, sequence, condition, true);
sequence.SetAlias(condition.Parameters[0].Name);
}
return(new AllAnyContext(buildInfo.Parent, methodCall, sequence));
}
