Java tutorial
/** * 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.jena.commonsrdf.impl; import java.util.Objects; import java.util.Optional; import org.apache.commons.rdf.api.IRI; import org.apache.commons.rdf.api.Literal; import org.apache.jena.graph.Node; public class JCR_Literal extends JCR_Term implements Literal { /* package */ JCR_Literal(Node node) { super(node); } @Override public String getLexicalForm() { return getNode().getLiteralLexicalForm(); } @Override public IRI getDatatype() { return JCR_Factory.createIRI(getNode().getLiteralDatatype().getURI()); } @Override public Optional<String> getLanguageTag() { String x = getNode().getLiteralLanguage(); if (x == null || x.isEmpty()) return Optional.empty(); return Optional.of(x); } @Override public int hashCode() { return Objects.hash(getLexicalForm(), getDatatype(), getLanguageTag()); } @Override public boolean equals(Object other) { if (other == this) return true; if (other == null) return false; if (!(other instanceof Literal)) return false; Literal literal = (Literal) other; return getLexicalForm().equals(literal.getLexicalForm()) && getLanguageTag().equals(literal.getLanguageTag()) && getDatatype().equals(literal.getDatatype()); } }