| /** |
| * 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.commons.rdf.jsonldjava; |
| |
| import java.util.Locale; |
| 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.commons.rdf.simple.Types; |
| |
| import com.github.jsonldjava.core.RDFDataset.Node; |
| |
| public interface JsonLdLiteral extends JsonLdTerm, Literal { |
| } |
| |
| class JsonLdLiteralImpl extends JsonLdTermImpl implements JsonLdLiteral { |
| |
| JsonLdLiteralImpl(final Node node) { |
| super(node); |
| if (!node.isLiteral()) { |
| throw new IllegalArgumentException("Node is not a Literal:" + node); |
| } |
| } |
| |
| private static String lowerCase(final String langTag) { |
| return langTag.toLowerCase(Locale.ROOT); |
| } |
| |
| @Override |
| public String ntriplesString() { |
| final StringBuilder sb = new StringBuilder(); |
| sb.append('"'); |
| // Escape special characters |
| sb.append(getLexicalForm().replace("\\", "\\\\"). // escaped to \\ |
| replace("\"", "\\\""). // escaped to \" |
| replace("\r", "\\r"). // escaped to \r |
| replace("\n", "\\n")); // escaped to \n |
| sb.append('"'); |
| |
| if (getLanguageTag().isPresent()) { |
| sb.append("@"); |
| sb.append(getLanguageTag().get()); |
| } else if (!getDatatype().equals(Types.XSD_STRING)) { |
| sb.append("^^"); |
| sb.append(getDatatype().ntriplesString()); |
| } |
| return sb.toString(); |
| } |
| |
| @Override |
| public String getLexicalForm() { |
| return node.getValue(); |
| } |
| |
| @Override |
| public IRI getDatatype() { |
| return new JsonLdIRIImpl(node.getDatatype()); |
| } |
| |
| @Override |
| public Optional<String> getLanguageTag() { |
| return Optional.ofNullable(node.getLanguage()); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(node.getValue(), node.getDatatype(), |
| getLanguageTag().map(JsonLdLiteralImpl::lowerCase)); |
| } |
| |
| @Override |
| public boolean equals(final Object obj) { |
| // COMMONSRDF-56: Do **not** use |
| // asJsonLdNode().compareTo(other.asJsonLdNode()) |
| if (obj instanceof Literal) { |
| final Literal other = (Literal) obj; |
| return getLexicalForm().equals(other.getLexicalForm()) |
| && getDatatype().equals(other.getDatatype()) |
| && getLanguageTag().map(JsonLdLiteralImpl::lowerCase) |
| .equals(other.getLanguageTag().map(JsonLdLiteralImpl::lowerCase)); |
| } |
| return false; |
| } |
| } |