public override void VisitLikeExpression(LikeExpression likeExpression)
{
likeExpression.Left.Accept(this);
var leftExpression = PopStack();
var visitResult = VisitInternal(likeExpression.Right);
Expression expression = null;
if (visitResult.StartsWith && visitResult.EndsWith)
{
expression = PredicateUtils.CallContains(
leftExpression,
visitResult.Expression,
_visitorMetadata.OperationsProvider);
}
//Starts with
else if (visitResult.StartsWith)
{
expression = PredicateUtils.CallStartsWith(
leftExpression,
visitResult.Expression,
_visitorMetadata.OperationsProvider);
}
//Ends with
else if (visitResult.EndsWith)
{
expression = PredicateUtils.CallEndsWith(
leftExpression,
visitResult.Expression,
_visitorMetadata.OperationsProvider);
}
else
{
expression = PredicateUtils.CreateComparisonExpression(
leftExpression,
visitResult.Expression,
BooleanComparisonType.Equals,
_visitorMetadata.OperationsProvider);
}
if (likeExpression.Not)
{
expression = Expression.Not(expression);
}
AddExpressionToStack(expression);
}
public override void VisitBooleanComparisonExpression(BooleanComparisonExpression booleanComparisonExpression)
{
booleanComparisonExpression.Left.Accept(this);
booleanComparisonExpression.Right.Accept(this);
var rightExpression = PopStack();
var leftExpression = PopStack();
var expression = PredicateUtils.CreateComparisonExpression(
leftExpression,
rightExpression,
booleanComparisonExpression.Type,
_visitorMetadata.OperationsProvider);
AddExpressionToStack(expression);
}
