org.apache.jackrabbit.value.StringValue 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.value;
import javax.jcr.PropertyType;
import javax.jcr.ValueFormatException;
/**
* A StringValue provides an implementation
* of the Value interface representing a string value.
*/
public class StringValue extends BaseValue {
public static final int TYPE = PropertyType.STRING;
private final String text;
/**
* Constructs a StringValue object representing a string.
*
* @param text the string this StringValue should represent
*/
public StringValue(String text) {
super(TYPE);
this.text = text;
}
/**
* Indicates whether some other object is "equal to" this one.
*
* The result is true if and only if the argument is not
* null and is a StringValue object that
* represents the same value as this object.
*
* @param obj the reference object with which to compare.
* @return true if this object is the same as the obj
* argument; false otherwise.
*/
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof StringValue) {
StringValue other = (StringValue) obj;
if (text == other.text) {
return true;
} else if (text != null && other.text != null) {
return text.equals(other.text);
}
}
return false;
}
/**
* Returns zero to satisfy the Object equals/hashCode contract.
* This class is mutable and not meant to be used as a hash key.
*
* @return always zero
* @see Object#hashCode()
*/
public int hashCode() {
return 0;
}
//------------------------------------------------------------< BaseValue >
/**
* {@inheritDoc}
*/
protected String getInternalString() throws ValueFormatException {
if (text != null) {
return text;
} else {
throw new ValueFormatException("empty value");
}
}
}