org.apache.lucene.analysis.tokenattributes.PositionIncrementAttributeImpl.java Source code

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Here is the source code for org.apache.lucene.analysis.tokenattributes.PositionIncrementAttributeImpl.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.lucene.analysis.tokenattributes;

import org.apache.lucene.util.AttributeImpl;
import org.apache.lucene.util.AttributeReflector;

/** Default implementation of {@link PositionIncrementAttribute}. */
public class PositionIncrementAttributeImpl extends AttributeImpl implements PositionIncrementAttribute, Cloneable {
    private int positionIncrement = 1;

    /** Initialize this attribute with position increment of 1 */
    public PositionIncrementAttributeImpl() {
    }

    @Override
    public void setPositionIncrement(int positionIncrement) {
        if (positionIncrement < 0) {
            throw new IllegalArgumentException(
                    "Position increment must be zero or greater; got " + positionIncrement);
        }
        this.positionIncrement = positionIncrement;
    }

    @Override
    public int getPositionIncrement() {
        return positionIncrement;
    }

    @Override
    public void clear() {
        this.positionIncrement = 1;
    }

    @Override
    public void end() {
        this.positionIncrement = 0;
    }

    @Override
    public boolean equals(Object other) {
        if (other == this) {
            return true;
        }

        if (other instanceof PositionIncrementAttributeImpl) {
            PositionIncrementAttributeImpl _other = (PositionIncrementAttributeImpl) other;
            return positionIncrement == _other.positionIncrement;
        }

        return false;
    }

    @Override
    public int hashCode() {
        return positionIncrement;
    }

    @Override
    public void copyTo(AttributeImpl target) {
        PositionIncrementAttribute t = (PositionIncrementAttribute) target;
        t.setPositionIncrement(positionIncrement);
    }

    @Override
    public void reflectWith(AttributeReflector reflector) {
        reflector.reflect(PositionIncrementAttribute.class, "positionIncrement", positionIncrement);
    }
}