org.ldp4j.application.data.Individuals Maven / Gradle / Ivy
/**
* #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
* This file is part of the LDP4j Project:
* http://www.ldp4j.org/
*
* Center for Open Middleware
* http://www.centeropenmiddleware.com/
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* Copyright (C) 2014-2016 Center for Open Middleware.
* #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
* Licensed 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.
* #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
* Artifact : org.ldp4j.framework:ldp4j-application-api:0.2.1
* Bundle : ldp4j-application-api-0.2.1.jar
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*/
package org.ldp4j.application.data;
import java.net.URI;
public final class Individuals {
private static class ValueReplicator implements ValueVisitor {
private final IndividualFinder finder;
private Value result=null;
ValueReplicator(DataSet dataSet) {
this.finder=new IndividualFinder(dataSet);
}
Value replicate(Value value) {
value.accept(this);
return this.result;
}
@Override
public void visitLiteral(Literal value) {
this.result=value;
}
@Override
public void visitIndividual(Individual value) {
this.result=this.finder.findOrCreate(value);
}
}
private Individuals() {
}
public static void merge(Individual source, Individual target) {
ValueReplicator replicator=new ValueReplicator(target.dataSet());
for(Property property:source.properties()) {
for(Value value:property) {
target.addValue(property.predicate(),replicator.replicate(value));
}
}
}
public static void remove(Individual source, final Individual target) {
for(Property property:source.properties()) {
final URI propertyId=property.predicate();
ValueVisitor visitor = new ValueVisitor(){
@Override
public void visitLiteral(Literal value) {
target.removeValue(propertyId, value);
}
@Override
public void visitIndividual(Individual value) {
Individual cValue = target.dataSet().individualOfId(value.id());
if(cValue!=null) {
target.removeValue(propertyId, cValue);
}
}
};
for(Value value:property) {
value.accept(visitor);
}
}
}
}