org.apache.jackrabbit.core.data.AbstractDataRecord Maven / Gradle / Ivy
/*
* 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.jackrabbit.core.data;
/**
* Abstract data record base class. This base class contains only
* a reference to the data identifier of the record and implements
* the standard {@link Object} equality, hash code, and string
* representation methods based on the identifier.
*/
public abstract class AbstractDataRecord implements DataRecord {
/**
* The data store that contains this record.
*/
private final AbstractDataStore store;
/**
* The binary identifier;
*/
private final DataIdentifier identifier;
/**
* Creates a data record with the given identifier.
*
* @param identifier data identifier
*/
public AbstractDataRecord(
AbstractDataStore store, DataIdentifier identifier) {
this.store = store;
this.identifier = identifier;
}
/**
* Returns the data identifier.
*
* @return data identifier
*/
public DataIdentifier getIdentifier() {
return identifier;
}
public String getReference() {
return store.getReferenceFromIdentifier(identifier);
}
/**
* Returns the string representation of the data identifier.
*
* @return string representation
*/
public String toString() {
return identifier.toString();
}
/**
* Checks if the given object is a data record with the same identifier
* as this one.
*
* @param object other object
* @return true
if the other object is a data record and has
* the same identifier as this one, false
otherwise
*/
public boolean equals(Object object) {
return (object instanceof DataRecord)
&& identifier.equals(((DataRecord) object).getIdentifier());
}
/**
* Returns the hash code of the data identifier.
*
* @return hash code
*/
public int hashCode() {
return identifier.hashCode();
}
}