com.blazebit.persistence.parser.predicate.AbstractPredicate 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.AbstractExpression;
import com.blazebit.persistence.parser.expression.ExpressionCopyContext;

/**
 *
 * @author Moritz Becker
 * @since 1.2.0
 */
public abstract class AbstractPredicate extends AbstractExpression implements Predicate {

    protected boolean negated;

    public AbstractPredicate(boolean negated) {
        this.negated = negated;
    }

    @Override
    public boolean isNegated() {
        return negated;
    }

    @Override
    public void setNegated(boolean negated) {
        this.negated = negated;
    }

    @Override
    public void negate() {
        this.negated = !this.negated;
    }

    @Override
    public abstract Predicate copy(ExpressionCopyContext copyContext);

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

        AbstractPredicate that = (AbstractPredicate) o;

        return negated == that.negated;

    }

    @Override
    public int hashCode() {
        return (negated ? 1 : 0);
    }
}