/*
* 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.clerezza.rdf.core.impl;
import org.apache.clerezza.rdf.core.Language;
import org.apache.clerezza.rdf.core.PlainLiteral;
/**
*
* @author reto
*/
public class PlainLiteralImpl implements PlainLiteral {
private String lexicalForm;
private Language language = null;
public PlainLiteralImpl(String value) {
if (value == null) {
throw new IllegalArgumentException("The literal string cannot be null");
}
this.lexicalForm = value;
}
public PlainLiteralImpl(String value, Language language) {
if (value == null) {
throw new IllegalArgumentException("The literal string cannot be null");
}
this.lexicalForm = value;
this.language = language;
}
@Override
public String getLexicalForm() {
return lexicalForm;
}
@Override
public boolean equals(Object otherObj) {
if (!(otherObj instanceof PlainLiteral)) {
return false;
}
PlainLiteral other = (PlainLiteral) otherObj;
if (!lexicalForm.equals(other.getLexicalForm())) {
return false;
}
if (language != null) {
return language.equals(other.getLanguage());
}
if (other.getLanguage() != null) {
return false;
}
return true;
}
@Override
public int hashCode() {
int hash = lexicalForm.hashCode();
if (language != null) {
hash += language.hashCode();
}
return hash;
}
@Override
public Language getLanguage() {
return language;
}
@Override
public String toString() {
StringBuffer result = new StringBuffer();
result.append('\"').append(lexicalForm).append('\"');
if (language != null) {
result.append("@").append(language.toString());
}
return result.toString();
}
}