/**
* Copyright 2014 National University of Ireland, Galway.
*
* This file is part of the SIREn project. Project and contact information:
*
* https://github.com/rdelbru/SIREn
*
* 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.sindice.siren.analysis.attributes;
import java.io.Serializable;
import java.util.Arrays;
import org.apache.lucene.util.AttributeImpl;
import org.apache.lucene.util.IntsRef;
import org.sindice.siren.analysis.JsonTokenizer;
import org.sindice.siren.util.ArrayUtils;
/**
* Implementation of {@link NodeAttribute} for a token coming from the
* {@link JsonTokenizer}.
*/
public class JsonNodeAttributeImpl
extends AttributeImpl
implements NodeAttribute, Cloneable, Serializable {
private static final long serialVersionUID = 8820316999175774635L;
private final IntsRef node = new IntsRef();
/**
* Returns this Token's node path.
*/
public IntsRef node() {
return node;
}
@Override
public void clear() {
node.length = 0;
node.offset = 0;
Arrays.fill(node.ints, 0);
}
@Override
public boolean equals(final Object other) {
if (other == this) {
return true;
}
if (other instanceof JsonNodeAttributeImpl) {
final JsonNodeAttributeImpl o = (JsonNodeAttributeImpl) other;
return node.equals(o.node);
}
return false;
}
@Override
public int hashCode() {
return node.hashCode();
}
@Override
public void copyTo(final AttributeImpl target) {
final JsonNodeAttributeImpl t = (JsonNodeAttributeImpl) target;
t.copyNode(node);
}
@Override
public void copyNode(final IntsRef nodePath) {
ArrayUtils.growAndCopy(node, nodePath.length);
System.arraycopy(nodePath.ints, nodePath.offset, node.ints, node.offset, nodePath.length);
node.offset = nodePath.offset;
node.length = nodePath.length;
}
@Override
public String toString() {
return "node=" + this.node();
}
@Override
public void append(final int nodeID) {
ArrayUtils.growAndCopy(node, node.length + 1);
node.ints[++node.length] = nodeID;
}
}