/*
 * Copyright (C) 2013 lichtflut Forschungs- und Entwicklungsgesellschaft mbH
 *
 * 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.
 */
package org.arastreju.samples;

import org.arastreju.sge.Arastreju;
import org.arastreju.sge.ArastrejuGate;
import org.arastreju.sge.Conversation;
import org.arastreju.sge.model.ResourceID;
import org.arastreju.sge.model.Statement;
import org.arastreju.sge.model.nodes.ResourceNode;
import org.arastreju.sge.naming.QualifiedName;

import static org.arastreju.sge.SNOPS.*;

/**
 * <p>
 *  Simple sample to demonstrate attaching and detaching a statement.
 * </p>
 *
 * <p>
 * 	Created Feb 22, 2013
 * </p>
 *
 * @author Timo Buhrmester
 */
public class StatementSample {
    private QualifiedName RESOURCE_URI_ALICE = new QualifiedName("http://example.org/alice");
    private QualifiedName RESOURCE_URI_BOB = new QualifiedName("http://example.org/bob");
    private QualifiedName RESOURCE_URI_KNOWS = new QualifiedName("http://example.org/knows");

    public void sample() {
        /* create instance and open master gate */
        Arastreju aras = Arastreju.getInstance();
        ArastrejuGate gate = aras.openMasterGate();

        /* create conversation for manipulating a graph */
        Conversation conv = gate.startConversation();

        /* create a new statement "alice talks_to bob" */
        ResourceNode subject = resource(id(RESOURCE_URI_ALICE));
        ResourceID predicate = id(RESOURCE_URI_KNOWS);
        ResourceID object = id(RESOURCE_URI_BOB);

        Statement stmt = associate(subject, predicate, object);

        /* add statement to conversation, persisting it */
        conv.addStatement(stmt);

        /* detach again if you want */
        conv.removeStatement(stmt);

        conv.close();
        gate.close();
    }

    public static void main(String[] args) {
        new StatementSample().sample();
    }
}