private Type GetEnumType(BaseBlock block)
{
if (block is PropBlock)
{
PropBlock pExpr = (PropBlock)block;
var prop = pExpr.Property;
if (prop.IsDataProperty)
{
if (TypeFns.IsEnumType(prop.ReturnType))
{
return(prop.ReturnType);
}
}
}
return(null);
}
public override void Validate(Type entityType)
{
var block = BaseBlock.CreateLHSBlock(ExprSource, entityType);
if (!(block is PropBlock))
{
throw new Exception("The first expression of this AnyAllPredicate must be a PropertyExpression");
}
this.NavPropBlock = (PropBlock)block;
var prop = NavPropBlock.Property;
if (prop.IsDataProperty || prop.ElementType == null)
{
throw new Exception("The first expression of this AnyAllPredicate must be a nonscalar Navigation PropertyExpression");
}
this.Predicate.Validate(prop.ElementType);
}
public override void Validate(Type entityType)
{
if (Expr1Source == null)
{
throw new Exception("Unable to validate 1st expression: " + this.Expr1Source);
}
this._block1 = BaseBlock.CreateLHSBlock(Expr1Source, entityType);
if (_op == Operator.In && !(Expr2Source is IList))
{
throw new Exception("The 'in' operator requires that its right hand argument be an array");
}
// Special purpose Enum handling
var enumType = GetEnumType(this._block1);
if (enumType != null)
{
if (Expr2Source != null)
{
var et = TypeFns.GetNonNullableType(enumType);
var expr2Enum = Enum.Parse(et, (String)Expr2Source);
this._block2 = BaseBlock.CreateRHSBlock(expr2Enum, entityType, null);
}
else
{
this._block2 = BaseBlock.CreateRHSBlock(null, entityType, null);
}
}
else
{
this._block2 = BaseBlock.CreateRHSBlock(Expr2Source, entityType, this._block1.DataType);
}
}