com.blazebit.persistence.parser.expression.SubqueryExpression Maven / Gradle / Ivy
/*
* Copyright 2014 - 2021 Blazebit.
*
* 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.blazebit.persistence.parser.expression;
/**
* SubqueryExpressions can never be returned by the parser and are therefore never cached. Thus, the clone method
* does not need to do deep cloning.
*
* @author Christian Beikov
* @author Moritz Becker
* @since 1.0.0
*/
public class SubqueryExpression extends AbstractExpression {
private final Subquery subquery;
public SubqueryExpression(Subquery builder) {
this.subquery = builder;
}
@Override
public SubqueryExpression copy(ExpressionCopyContext copyContext) {
return new SubqueryExpression(subquery);
}
@Override
public void accept(Visitor visitor) {
visitor.visit(this);
}
@Override
public T accept(ResultVisitor visitor) {
return visitor.visit(this);
}
public Subquery getSubquery() {
return subquery;
}
@Override
public int hashCode() {
int hash = 7;
hash = 83 * hash + (this.subquery != null ? this.subquery.hashCode() : 0);
return hash;
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final SubqueryExpression other = (SubqueryExpression) obj;
if (this.subquery != other.subquery && (this.subquery == null || !this.subquery.equals(other.subquery))) {
return false;
}
return true;
}
}