src/main/java/org/apache/sling/resource/filter/impl/predicates/Null.java

/*
 * 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 org.apache.sling.resource.filter.impl.predicates;

/**
 * Utility class to represent a Null value while evaluating predicates
 *
 */
public class Null extends Number implements CharSequence {

    private static final long serialVersionUID = 1L;

    @Override
    public boolean equals(Object obj) {
        return false;
    }

    @Override
    public int length() {
        return 0;
    }

    @Override
    public char charAt(int index) {
        return 0;
    }

    @Override
    public CharSequence subSequence(int start, int end) {
        return null;
    }

    @Override
    public int intValue() {
        return 0;
    }

    @Override
    public long longValue() {
        return 0;
    }

    @Override
    public float floatValue() {
        return 0;
    }

    @Override
    public double doubleValue() {
        return Double.NaN;
    }

}