/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.facebook.presto.sql.planner.assertions;
import com.facebook.presto.sql.tree.SymbolReference;
class AnySymbolReference
extends SymbolReference
{
AnySymbolReference()
{
super("*");
}
@Override
public int hashCode()
{
/*
* See AnySymbol.hashCode() for an explanation of why this is the way it is.
* If you find a use case for putting AnySymbolReference in a hash table,
* feel free to implement this.
*/
throw new UnsupportedOperationException("Test object");
}
@Override
public boolean equals(Object obj)
{
if (obj == this) {
return true;
}
if (obj == null) {
return false;
}
return obj instanceof SymbolReference;
}
}