com.blazebit.persistence.parser.expression.OrderByItem 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;
/**
*
* @author Christian Beikov
* @since 1.4.0
*/
public final class OrderByItem {
private final boolean ascending;
private final boolean nullFirst;
private Expression expression;
public OrderByItem(boolean ascending, boolean nullFirst, Expression expression) {
this.ascending = ascending;
this.nullFirst = nullFirst;
this.expression = expression;
}
public OrderByItem copy(ExpressionCopyContext copyContext) {
return new OrderByItem(ascending, nullFirst, expression.copy(copyContext));
}
public boolean isAscending() {
return ascending;
}
public boolean isDescending() {
return !ascending;
}
public boolean isNullFirst() {
return nullFirst;
}
public Expression getExpression() {
return expression;
}
public void setExpression(Expression expression) {
this.expression = expression;
}
@Override
public int hashCode() {
int hash = 7;
hash = 37 * hash + (this.ascending ? 1 : 0);
hash = 37 * hash + (this.nullFirst ? 1 : 0);
hash = 37 * hash + (this.expression != null ? this.expression.hashCode() : 0);
return hash;
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final OrderByItem other = (OrderByItem) obj;
if (this.ascending != other.ascending) {
return false;
}
if (this.nullFirst != other.nullFirst) {
return false;
}
if (this.expression != other.expression && (this.expression == null || !this.expression.equals(other.expression))) {
return false;
}
return true;
}
}