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/*-
* ============LICENSE_START=======================================================
* org.openecomp.aai
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.aai.serialization.engines;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.tinkerpop.gremlin.structure.Graph;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.openecomp.aai.introspection.Loader;
import org.openecomp.aai.query.builder.GremlinTraversal;
import org.openecomp.aai.query.builder.GremlinUnique;
import org.openecomp.aai.query.builder.QueryBuilder;
import org.openecomp.aai.query.builder.TraversalQuery;
import org.openecomp.aai.serialization.db.GraphSingleton;
import org.openecomp.aai.serialization.engines.query.GraphTraversalQueryEngine;
import org.openecomp.aai.serialization.engines.query.QueryEngine;
import com.thinkaurelius.titan.core.TitanGraph;
public abstract class TransactionalGraphEngine {
protected Graph graph = null;
protected GraphSingleton singleton = null;
protected QueryEngine queryEngine = null;
protected QueryBuilder queryBuilder = null;
protected QueryStyle style = null;
protected Loader loader = null;
/**
* Instantiates a new transactional graph engine.
*
* @param style the style
* @param loader the loader
*/
public TransactionalGraphEngine (QueryStyle style, Loader loader) {
this.loader = loader;
this.style = style;
if (style.equals(QueryStyle.GREMLIN_TRAVERSAL)) {
//this.queryEngine = new GremlinQueryEngine(this);
} else if (style.equals(QueryStyle.GREMLIN_UNIQUE)) {
//this.queryEngine = new GremlinQueryEngine(this);
} else if (style.equals(QueryStyle.GREMLINPIPELINE_TRAVERSAL)) {
//this.queryEngine = new GremlinPipelineQueryEngine(this);
} else if (style.equals(QueryStyle.TRAVERSAL)) {
this.queryEngine = new GraphTraversalQueryEngine(this);
} else {
throw new IllegalArgumentException("Query Engine type not recognized");
}
}
/**
* Sets the list property.
*
* @param v the v
* @param name the name
* @param obj the obj
* @return true, if successful
*/
public abstract boolean setListProperty(Vertex v, String name, List<?> obj);
/**
* Gets the list property.
*
* @param v the v
* @param name the name
* @return the list property
*/
public abstract List getListProperty(Vertex v, String name);
/**
* Gets the graph.
*
* @return the graph
*/
public TitanGraph getGraph() {
return singleton.getTxGraph();
}
/**
* Gets the count.
*
* @return the count
*/
public AtomicInteger getCount() {
return singleton.getCount();
}
/**
* Should shutdown.
*
* @return true, if successful
*/
public boolean shouldShutdown() {
return false;
}
/**
* Gets the query engine.
*
* @return the query engine
*/
public QueryEngine getQueryEngine() {
return this.queryEngine;
}
/**
* Gets the query builder.
*
* @return the query builder
*/
public QueryBuilder getQueryBuilder() {
if (style.equals(QueryStyle.GREMLIN_TRAVERSAL)) {
return new GremlinTraversal(loader);
} else if (style.equals(QueryStyle.GREMLIN_UNIQUE)) {
return new GremlinUnique(loader);
} else if (style.equals(QueryStyle.GREMLINPIPELINE_TRAVERSAL)) {
//return new GremlinPipelineTraversal(loader);
} else if (style.equals(QueryStyle.TRAVERSAL)) {
return new TraversalQuery(loader);
} else {
throw new IllegalArgumentException("Query Builder type not recognized");
}
return queryBuilder;
}
/**
* Gets the query builder.
*
* @param start the start
* @return the query builder
*/
public QueryBuilder getQueryBuilder(Vertex start) {
if (style.equals(QueryStyle.GREMLIN_TRAVERSAL)) {
return new GremlinTraversal(loader,start);
} else if (style.equals(QueryStyle.GREMLIN_UNIQUE)) {
return new GremlinUnique(loader,start);
} else if (style.equals(QueryStyle.GREMLINPIPELINE_TRAVERSAL)) {
//return new GremlinPipelineTraversal(loader,start);
} else if (style.equals(QueryStyle.TRAVERSAL)) {
return new TraversalQuery(loader, start);
} else {
throw new IllegalArgumentException("Query Builder type not recognized");
}
return queryBuilder;
}
}
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