internal override DbExpression AsCqt(DbExpression row, bool skipIsNotNull)
{
DbExpression cqt = this.RestrictedMemberSlot.MemberPath.AsCqt(row);
if (Helper.IsRefType((GlobalItem)this.RestrictedMemberSlot.MemberPath.EdmType))
{
cqt = (DbExpression)cqt.Deref();
}
if (this.Domain.Count == 1)
{
cqt = (DbExpression)cqt.IsOfOnly(TypeUsage.Create(((TypeConstant)this.Domain.Values.Single <Constant>()).EdmType));
}
else
{
cqt = Helpers.BuildBalancedTreeInPlace <DbExpression>((IList <DbExpression>) this.Domain.Values.Select <Constant, DbExpression>((Func <Constant, DbExpression>)(t => (DbExpression)cqt.IsOfOnly(TypeUsage.Create(((TypeConstant)t).EdmType)))).ToList <DbExpression>(), (Func <DbExpression, DbExpression, DbExpression>)((prev, next) => (DbExpression)prev.Or(next)));
}
return(cqt);
}
private bool TryResolveAsRefPropertyAccess(
DbExpression valueExpr,
string name,
ErrorContext errCtx,
out DbExpression propertyExpr)
{
propertyExpr = (DbExpression)null;
if (!TypeSemantics.IsReferenceType(valueExpr.ResultType))
{
return(false);
}
DbExpression valueExpr1 = (DbExpression)valueExpr.Deref();
TypeUsage resultType = valueExpr1.ResultType;
if (this.TryResolveAsPropertyAccess(valueExpr1, name, out propertyExpr))
{
return(true);
}
string errorMessage = Strings.InvalidDeRefProperty((object)name, (object)resultType.EdmType.FullName, (object)valueExpr.ResultType.EdmType.FullName);
throw EntitySqlException.Create(errCtx, errorMessage, (Exception)null);
}
internal override DbExpression AsCqt(DbExpression row, bool skipIsNotNull)
{
DbExpression cqt = this.RestrictedMemberSlot.MemberPath.AsCqt(row);
if (Helper.IsRefType(this.RestrictedMemberSlot.MemberPath.EdmType))
{
cqt = cqt.Deref();
}
if (this.Domain.Count == 1)
{
// Single value
cqt = cqt.IsOfOnly(TypeUsage.Create(((TypeConstant)this.Domain.Values.Single()).EdmType));
}
else
{
// Multiple values: build list of var IsOnOnly(t1), var = IsOnOnly(t1), ..., then OR them all.
List <DbExpression> operands = this.Domain.Values.Select(t => (DbExpression)cqt.IsOfOnly(TypeUsage.Create(((TypeConstant)t).EdmType))).ToList();
cqt = Helpers.BuildBalancedTreeInPlace(operands, (prev, next) => prev.Or(next));
}
return(cqt);
}
/// <summary>
/// If <paramref name="valueExpr" /> returns a reference, then deref and try resolving <paramref name="name" /> as a property of the dereferenced value.
/// </summary>
private bool TryResolveAsRefPropertyAccess(DbExpression valueExpr, string name, ErrorContext errCtx, out DbExpression propertyExpr)
{
DebugCheck.NotNull(valueExpr);
propertyExpr = null;
if (TypeSemantics.IsReferenceType(valueExpr.ResultType))
{
DbExpression derefExpr = valueExpr.Deref();
var derefExprType = derefExpr.ResultType;
if (TryResolveAsPropertyAccess(derefExpr, name, out propertyExpr))
{
return(true);
}
else
{
var message = Strings.InvalidDeRefProperty(name, derefExprType.EdmType.FullName, valueExpr.ResultType.EdmType.FullName);
throw EntitySqlException.Create(errCtx, message, null);
}
}
return(false);
}