protected override IBuildContext BuildMethodCall(ExpressionBuilder builder, MethodCallExpression methodCall, BuildInfo buildInfo)
{
var sequence = builder.BuildSequence(new BuildInfo(buildInfo, methodCall.Arguments[0]));
switch (methodCall.Arguments.Count)
{
case 1: // int Update<T>(this IUpdateable<T> source)
break;
case 2: // int Update<T>(this IQueryable<T> source, Expression<Func<T,T>> setter)
{
BuildSetter(
builder, buildInfo, (LambdaExpression)methodCall.Arguments[1].Unwrap(), sequence, sequence);
break;
}
case 3:
{
var expr = methodCall.Arguments[1].Unwrap();
if (expr is LambdaExpression)
{
// int Update<T>(this IQueryable<T> source, Expression<Func<T,bool>> predicate, Expression<Func<T,T>> setter)
//
sequence = builder.BuildWhere(buildInfo.Parent, sequence, (LambdaExpression)methodCall.Arguments[1].Unwrap(), false);
BuildSetter(builder, buildInfo, (LambdaExpression)methodCall.Arguments[2].Unwrap(), sequence, sequence);
}
else
{
// static int Update<TSource,TTarget>(this IQueryable<TSource> source, Table<TTarget> target, Expression<Func<TSource,TTarget>> setter)
//
var into = builder.BuildSequence(new BuildInfo(buildInfo, expr, new SqlQuery()));
BuildSetter(builder, buildInfo, (LambdaExpression)methodCall.Arguments[2].Unwrap(), into, sequence);
var sql = sequence.SqlQuery;
sql.Select.Columns.Clear();
foreach (var item in sql.Set.Items)
{
sql.Select.Columns.Add(new SqlQuery.Column(sql, item.Expression));
}
sql.Set.Into = ((TableBuilder.TableContext)into).SqlTable;
}
break;
}
}
sequence.SqlQuery.QueryType = QueryType.Update;
return(new UpdateContext(buildInfo.Parent, sequence));
}
protected override IBuildContext BuildMethodCall(ExpressionBuilder builder, MethodCallExpression methodCall, BuildInfo buildInfo)
{
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, true);
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]));
var condition = (LambdaExpression)ExpressionBuilder.GetPredicate(methodCall.Arguments[1]);
var result = builder.BuildWhere(buildInfo.Parent, sequence, condition, true);
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.SqlQuery.QueryType = QueryType.Delete;
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]));
if (methodCall.Arguments.Count == 2)
{
sequence = builder.BuildWhere(buildInfo.Parent, sequence, (LambdaExpression)methodCall.Arguments[1].Unwrap(), false);
}
sequence.SqlQuery.QueryType = QueryType.Delete;
// Check association.
//
var ctx = sequence as SelectContext;
if (ctx != null && ctx.IsScalar)
{
var res = ctx.IsExpression(null, 0, RequestFor.Association);
if (res.Result && res.Context is TableBuilder.AssociatedTableContext)
{
var atc = (TableBuilder.AssociatedTableContext)res.Context;
sequence.SqlQuery.Delete.Table = atc.SqlTable;
}
else
{
res = ctx.IsExpression(null, 0, RequestFor.Table);
if (res.Result && res.Context is TableBuilder.TableContext)
{
var tc = (TableBuilder.TableContext)res.Context;
if (sequence.SqlQuery.From.Tables.Count == 0 || sequence.SqlQuery.From.Tables[0].Source != tc.SqlQuery)
{
sequence.SqlQuery.Delete.Table = tc.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]));
if (methodCall.Arguments.Count == 2)
{
var condition = (LambdaExpression)methodCall.Arguments[1].Unwrap();
if (methodCall.Method.Name == "All")
#if FW4
{ condition = Expression.Lambda(Expression.Not(condition.Body), condition.Name, condition.Parameters); }
#else
{ condition = Expression.Lambda(Expression.Not(condition.Body), condition.Parameters.ToArray()); }
#endif
sequence = builder.BuildWhere(buildInfo.Parent, sequence, condition, true);
sequence.SetAlias(condition.Parameters[0].Name);
}
return(new AllAnyContext(buildInfo.Parent, methodCall, sequence));
}
