/*
* 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.metadata;
import java.util.Objects;
import static java.util.Objects.requireNonNull;
public class SpecializedFunctionKey
{
private final SqlFunction function;
private final BoundVariables boundVariables;
private final int arity;
public SpecializedFunctionKey(SqlFunction function, BoundVariables boundVariables, int arity)
{
this.function = requireNonNull(function, "function is null");
this.boundVariables = requireNonNull(boundVariables, "boundVariables is null");
this.arity = arity;
}
public SqlFunction getFunction()
{
return function;
}
public BoundVariables getBoundVariables()
{
return boundVariables;
}
public int getArity()
{
return arity;
}
@Override
public boolean equals(Object o)
{
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
SpecializedFunctionKey that = (SpecializedFunctionKey) o;
return Objects.equals(boundVariables, that.boundVariables) &&
Objects.equals(function.getSignature(), that.function.getSignature()) &&
arity == that.arity;
}
@Override
public int hashCode()
{
return Objects.hash(function.getSignature(), boundVariables, arity);
}
}