/*
* 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.stanbol.entityhub.core.model;
import java.io.Serializable;
import org.apache.stanbol.entityhub.servicesapi.model.Reference;
import org.apache.stanbol.entityhub.servicesapi.model.Representation;
import org.apache.stanbol.entityhub.servicesapi.model.Text;
import org.apache.stanbol.entityhub.servicesapi.model.ValueFactory;
public class InMemoryValueFactory implements ValueFactory {
private static InMemoryValueFactory instance;
public static InMemoryValueFactory getInstance(){
if(instance == null){
instance = new InMemoryValueFactory();
}
return instance;
}
protected InMemoryValueFactory(){
super();
}
@Override
public Reference createReference(Object value) {
if(value == null){
throw new IllegalArgumentException("The parsed value MUST NOT be NULL");
}
return new ReferenceImpl(value.toString());
}
@Override
public Text createText(Object value) {
if(value == null){
throw new IllegalArgumentException("The parsed value MUST NOT be NULL");
}
return createText(value.toString(),null);
}
@Override
public Text createText(String text, String language) {
return new TextImpl(text,language);
}
protected static class ReferenceImpl implements Reference, Serializable,Cloneable{
/**
* serialVersionUID
*/
private static final long serialVersionUID = 2571082550530948667L;
private final String value;
protected ReferenceImpl(String value) {
super();
if(value == null){
throw new IllegalArgumentException("The value of the reference MUST NOT be NULL");
}
if(value.isEmpty()){
throw new IllegalArgumentException("The value of the reference MUST NOT be empty");
}
this.value = value;
}
public final String getReference() {
return value;
}
@Override
public int hashCode() {
return value.hashCode();
}
@Override
public boolean equals(Object obj) {
return obj instanceof ReferenceImpl && ((ReferenceImpl)obj).value.equals(value);
}
@Override
public String toString() {
return value;
}
@Override
public ReferenceImpl clone() throws CloneNotSupportedException {
return new ReferenceImpl(value);
}
}
protected static class TextImpl implements Text, Serializable,Cloneable {
/**
* serialVersionUID
*/
private static final long serialVersionUID = -5646936810374934435L;
private final String value;
private final String language;
protected TextImpl(String value) throws IllegalArgumentException {
this(value,null);
}
protected TextImpl(String value, String language) throws IllegalArgumentException {
super();
if(value == null){
throw new IllegalArgumentException("The value of the Text MUST NOT be NULL!");
}
this.value = value;
this.language = language;
}
public final String getText() {
return value;
}
public final String getLanguage() {
return language;
}
@Override
public int hashCode() {
return value.hashCode()+(language!=null?language.hashCode():0);
}
@Override
public String toString() {
return value+(language!=null && !language.isEmpty() ? ('@'+language):"");
}
@Override
public boolean equals(Object obj) {
if(obj instanceof TextImpl && ((TextImpl)obj).value.equals(value)){
if(((TextImpl)obj).language == null){
return language == null;
} else {
return ((TextImpl)obj).language.equals(language);
}
} else {
return false;
}
}
@Override
protected Object clone() throws CloneNotSupportedException {
return new TextImpl(value, language);
}
}
@Override
public Representation createRepresentation(String id) {
if (id == null){
throw new IllegalArgumentException("The parsed id MUST NOT be NULL!");
} else if(id.isEmpty()){
throw new IllegalArgumentException("The parsed id MUST NOT be empty!");
} else {
return new InMemoryRepresentation(id);
}
}
// @Override
// public Object createValue(String dataTypeUri, Object value) throws UnsupportedTypeException, UnsupportedDataTypeException {
//
// return null;
// }
}