private static void VisitAbstractMatch(EnumerableVisitor visitor, MethodCallExpression node, string format)
{
var fragment = visitor.Push(visitor.Peek.Fragment <IBinaryExpressionBuilder>());
try
{
visitor.Visit(node.Object);
visitor.Peek.Write(visitor.Peek.CreateOperator(QueryOperator.Match));
visitor.Visit(node.Arguments);
}
finally
{
visitor.Pop();
}
var parameter = fragment.Right as IParameterBuilder;
if (parameter != null)
{
visitor.Constants[parameter.Name] = string.Format(
format,
visitor.Constants[parameter.Name]
);
}
else
{
//TODO: Warn, expected parameter was not found.
}
visitor.Peek.Write(fragment);
}
protected virtual IDatabaseSet Set(Expression expression)
{
var set = this.Database.Set <T>(this.Source.Clone());
var visitor = new EnumerableVisitor(this, this.Database, set.Fetch, set.ElementType);
visitor.Visit(expression);
if (set.Parameters != null)
{
set.Parameters = (DatabaseParameterHandler)Delegate.Combine(set.Parameters, visitor.Parameters);
}
else
{
set.Parameters = visitor.Parameters;
}
return((IDatabaseSet)set);
}
public static void VisitStartsWith(EnumerableVisitor visitor, MethodCallExpression node)
{
VisitAbstractMatch(visitor, node, "{0}%");
}
public static void VisitContains(EnumerableVisitor visitor, MethodCallExpression node)
{
VisitAbstractMatch(visitor, node, "%{0}%");
}