public override bool TryWrapNode(Expression node, out QueryExpression wrapper)
{
var nodeAsConstantExpression = node as ConstantExpression;
Type[] typeArgs;
if (nodeAsConstantExpression != null
&& nodeAsConstantExpression.Type.TryExtractTypeArguments(typeof(IQueryable<>), out typeArgs))
{
wrapper = new QuerySourceExpression(nodeAsConstantExpression);
return true;
}
wrapper = null;
return false;
}
public override bool TryWrapNode(Expression node, out QueryExpression wrapper)
{
var nodeAsConstantExpression = node as ConstantExpression;
Type[] typeArgs;
if (nodeAsConstantExpression != null &&
nodeAsConstantExpression.Type.TryExtractTypeArguments(typeof(IQueryable <>), out typeArgs))
{
wrapper = new QuerySourceExpression(nodeAsConstantExpression);
return(true);
}
wrapper = null;
return(false);
}
protected virtual Expression VisitQuerySource(QuerySourceExpression node)
{
return(base.VisitExtension(node));
}
protected virtual Expression VisitQuerySource(QuerySourceExpression node)
{
return base.VisitExtension(node);
}