+++ /dev/null
-/*-
- * ============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.process.traversal.dsl.graph.GraphTraversalSource;
-import org.apache.tinkerpop.gremlin.process.traversal.strategy.verification.ReadOnlyStrategy;
-import org.apache.tinkerpop.gremlin.structure.Graph;
-import org.apache.tinkerpop.gremlin.structure.Vertex;
-import org.openecomp.aai.dbmap.DBConnectionType;
-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;
-import com.thinkaurelius.titan.core.schema.TitanManagement;
-
-public abstract class TransactionalGraphEngine {
-
- protected GraphSingleton singleton = null;
- protected QueryEngine queryEngine = null;
- protected QueryBuilder<Vertex> queryBuilder = null;
- protected QueryStyle style = null;
- protected final DBConnectionType connectionType;
- protected final Loader loader;
- protected Graph currentTx = null;
- protected GraphTraversalSource currentTraversal = null;
- protected GraphTraversalSource readOnlyTraversal = null;
- private final Admin admin;
- /**
- * Instantiates a new transactional graph engine.
- *
- * @param style the style
- * @param loader the loader
- */
- public TransactionalGraphEngine (QueryStyle style, Loader loader, DBConnectionType connectionType, GraphSingleton singleton) {
- this.loader = loader;
- this.style = style;
- this.singleton = singleton;
- this.connectionType = connectionType;
- admin = new Admin();
-
- }
-
- public TransactionalGraphEngine (QueryStyle style, Loader loader) {
- this.loader = loader;
- this.style = style;
- this.connectionType = DBConnectionType.REALTIME;
- admin = new Admin();
- }
-
- /**
- * 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<Object> getListProperty(Vertex v, String name);
-
- /**
- * Gets the graph.
- *
- * @return the graph
- */
- private TitanGraph getGraph() {
- return singleton.getTxGraph(this.connectionType);
- }
-
- /**
- * Gets the count.
- *
- * @return the count
- */
- public AtomicInteger getCount() {
- return singleton.getCount();
- }
-
-
- /**
- * Gets the query engine.
- *
- * @return the query engine
- */
- public QueryEngine getQueryEngine() {
- QueryEngine engine = null;
- 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)) {
-
- return new GraphTraversalQueryEngine(this.asAdmin().getTraversalSource());
-
- } else {
- throw new IllegalArgumentException("Query Engine type not recognized");
- }
-
- return engine;
- }
-
- /**
- * Gets the query builder.
- *
- * @return the query builder
- */
- public QueryBuilder<Vertex> getQueryBuilder() {
- return getQueryBuilder(this.loader);
- }
-
- public QueryBuilder<Vertex> getQueryBuilder(QueryStyle style) {
- return getQueryBuilder(style, this.loader);
- }
-
- public QueryBuilder<Vertex> getQueryBuilder(Loader loader) {
- return getQueryBuilder(this.style, loader);
- }
-
- public QueryBuilder<Vertex> getQueryBuilder(QueryStyle style, Loader loader) {
- if (style.equals(QueryStyle.GREMLIN_TRAVERSAL)) {
- return new GremlinTraversal<>(loader, this.asAdmin().getTraversalSource());
- } else if (style.equals(QueryStyle.GREMLIN_UNIQUE)) {
- return new GremlinUnique<>(loader, this.asAdmin().getTraversalSource());
- } else if (style.equals(QueryStyle.GREMLINPIPELINE_TRAVERSAL)) {
- //return new GremlinPipelineTraversal(loader);
- } else if (style.equals(QueryStyle.TRAVERSAL)) {
- return new TraversalQuery<>(loader, this.asAdmin().getTraversalSource());
- } 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<Vertex> getQueryBuilder(Vertex start) {
- return getQueryBuilder(this.loader, start);
- }
-
- public QueryBuilder<Vertex> getQueryBuilder(Loader loader, Vertex start) {
- return getQueryBuilder(this.style, loader, start);
- }
-
- public QueryBuilder<Vertex> getQueryBuilder(QueryStyle style, Loader loader, Vertex start) {
- if (style.equals(QueryStyle.GREMLIN_TRAVERSAL)) {
- return new GremlinTraversal<>(loader, this.asAdmin().getTraversalSource(), start);
- } else if (style.equals(QueryStyle.GREMLIN_UNIQUE)) {
- return new GremlinUnique<>(loader, this.asAdmin().getTraversalSource(), start);
- } else if (style.equals(QueryStyle.GREMLINPIPELINE_TRAVERSAL)) {
- //return new GremlinPipelineTraversal(loader,start);
- } else if (style.equals(QueryStyle.TRAVERSAL)) {
- return new TraversalQuery<>(loader, this.asAdmin().getTraversalSource(), start);
- } else {
- throw new IllegalArgumentException("Query Builder type not recognized");
- }
- return queryBuilder;
- }
- public Graph startTransaction() {
- if (this.tx() == null) {
- this.currentTx = this.getGraph().newTransaction();
- this.currentTraversal = this.tx().traversal();
- this.readOnlyTraversal = this.tx().traversal(GraphTraversalSource.build().with(ReadOnlyStrategy.instance()));
- }
- return currentTx;
- }
-
- public void rollback() {
- if (this.tx() != null) {
- this.tx().tx().rollback();
- this.currentTx = null;
- this.currentTraversal = null;
- this.readOnlyTraversal = null;
- }
- }
- public void commit() {
- if (this.tx() != null) {
- this.tx().tx().commit();
- this.currentTx = null;
- this.currentTraversal = null;
- this.readOnlyTraversal = null;
- }
- }
-
- public Graph tx() {
- return this.currentTx;
- }
-
- public Admin asAdmin() {
- return admin;
- }
-
- public class Admin {
-
- public GraphTraversalSource getTraversalSource() {
- return currentTraversal;
- }
- public GraphTraversalSource getReadOnlyTraversalSource() {
- return readOnlyTraversal;
- }
-
- public TitanManagement getManagementSystem() {
- return getGraph().openManagement();
- }
- }
-}
Code Review / aai / aai-common.git / blobdiff