com.blazebit.persistence.parser.predicate.UnaryExpressionPredicate Maven / Gradle / Ivy

/*
 * Copyright 2014 - 2020 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.predicate;

import com.blazebit.persistence.parser.expression.Expression;
import com.blazebit.persistence.parser.expression.ExpressionCopyContext;

/**
 *
 * @author Christian Beikov
 * @author Moritz Becker
 * @since 1.0.0
 */
public abstract class UnaryExpressionPredicate extends AbstractPredicate {

    protected Expression expression;

    public UnaryExpressionPredicate(Expression expression, boolean negated) {
        super(negated);
        this.expression = expression;
        this.negated = negated;
    }

    public UnaryExpressionPredicate(Expression expression) {
        this(expression, false);
    }

    @Override
    public abstract UnaryExpressionPredicate copy(ExpressionCopyContext copyContext);

    public Expression getExpression() {
        return expression;
    }

    public void setExpression(Expression expression) {
        this.expression = expression;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (!(o instanceof UnaryExpressionPredicate)) {
            return false;
        }
        if (!super.equals(o)) {
            return false;
        }

        UnaryExpressionPredicate that = (UnaryExpressionPredicate) o;

        return expression != null ? expression.equals(that.expression) : that.expression == null;

    }

    @Override
    public int hashCode() {
        int result = super.hashCode();
        result = 31 * result + (expression != null ? expression.hashCode() : 0);
        return result;
    }
}