2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 you may not use this file except in compliance with the License.
9 You may obtain a copy of the License at
11 http://www.apache.org/licenses/LICENSE-2.0
13 Unless required by applicable law or agreed to in writing, software
14 distributed under the License is distributed on an "AS IS" BASIS,
15 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 See the License for the specific language governing permissions and
17 limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.openecomp.aai.query.builder;
23 import java.io.UnsupportedEncodingException;
25 import java.util.List;
27 import javax.ws.rs.core.MultivaluedMap;
29 import org.apache.tinkerpop.gremlin.process.traversal.Step;
30 import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal;
31 import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource;
32 import org.apache.tinkerpop.gremlin.structure.Vertex;
34 import org.openecomp.aai.exceptions.AAIException;
35 import org.openecomp.aai.introspection.Introspector;
36 import org.openecomp.aai.introspection.Loader;
37 import org.openecomp.aai.parsers.query.QueryParser;
38 import org.openecomp.aai.parsers.query.TraversalStrategy;
41 * The Class TraversalQuery.
43 public class TraversalQuery extends GraphTraversalBuilder {
46 * Instantiates a new traversal query.
48 * @param loader the loader
50 public TraversalQuery(Loader loader, GraphTraversalSource source) {
51 super(loader, source);
52 this.factory = new TraversalStrategy(this.loader, this);
56 * Instantiates a new traversal query.
58 * @param loader the loader
59 * @param start the start
61 public TraversalQuery(Loader loader, GraphTraversalSource source, Vertex start) {
62 super(loader, source, start);
63 this.factory = new TraversalStrategy(this.loader, this);
66 protected TraversalQuery(GraphTraversal<Vertex, Vertex> traversal, Loader loader, GraphTraversalSource source, GraphTraversalBuilder gtb) {
67 super(loader, source);
68 this.traversal = traversal;
69 this.stepIndex = gtb.getStepIndex();
70 this.parentStepIndex = gtb.getParentStepIndex();
71 this.containerStepIndex = gtb.getContainerStepIndex();
72 this.factory = new TraversalStrategy(this.loader, this);
73 this.start = gtb.getStart();
80 public QueryParser createQueryFromURI(URI uri) throws UnsupportedEncodingException, AAIException {
81 return factory.buildURIParser(uri);
88 public QueryParser createQueryFromRelationship(Introspector relationship) throws UnsupportedEncodingException, AAIException {
89 return factory.buildRelationshipParser(relationship);
96 public QueryParser createQueryFromURI(URI uri, MultivaluedMap<String, String> queryParams)
97 throws UnsupportedEncodingException, AAIException {
98 return factory.buildURIParser(uri, queryParams);
105 public QueryParser createQueryFromObjectName(String objName) {
106 return factory.buildObjectNameParser(objName);
113 public QueryBuilder newInstance(Vertex start) {
114 return new TraversalQuery(loader, source, start);
121 public QueryBuilder newInstance() {
122 return new TraversalQuery(loader, source);
126 protected QueryBuilder cloneQueryAtStep(int index) {
130 GraphTraversal<Vertex, Vertex> clone = this.traversal.asAdmin().clone();
131 GraphTraversal.Admin<Vertex, Vertex> cloneAdmin = clone.asAdmin();
132 List<Step> steps = cloneAdmin.getSteps();
134 for (int i = steps.size()-1; i >= index; i--) {
135 cloneAdmin.removeStep(i);
137 return new TraversalQuery(cloneAdmin, loader, source, this);
141 protected QueryBuilder removeQueryStepsBetween(int start, int end) {
142 GraphTraversal<Vertex, Vertex> clone = this.traversal.asAdmin().clone();
143 GraphTraversal.Admin<Vertex, Vertex> cloneAdmin = clone.asAdmin();
145 for (int i = end-2; i >= start; i--) {
146 cloneAdmin.removeStep(i);
148 return new TraversalQuery(cloneAdmin, loader, source, this);