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Diffstat (limited to 'aai-core/src/main/java/org/onap/aai/query/builder/TraversalQuery.java')
-rw-r--r-- | aai-core/src/main/java/org/onap/aai/query/builder/TraversalQuery.java | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/aai-core/src/main/java/org/onap/aai/query/builder/TraversalQuery.java b/aai-core/src/main/java/org/onap/aai/query/builder/TraversalQuery.java new file mode 100644 index 00000000..60e72aa5 --- /dev/null +++ b/aai-core/src/main/java/org/onap/aai/query/builder/TraversalQuery.java @@ -0,0 +1,151 @@ +/** + * ============LICENSE_START======================================================= + * org.onap.aai + * ================================================================================ + * Copyright © 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========================================================= + * + * ECOMP is a trademark and service mark of AT&T Intellectual Property. + */ +package org.onap.aai.query.builder; + +import java.io.UnsupportedEncodingException; +import java.net.URI; +import java.util.List; + +import javax.ws.rs.core.MultivaluedMap; + +import org.apache.tinkerpop.gremlin.process.traversal.Step; +import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal; +import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource; +import org.apache.tinkerpop.gremlin.structure.Vertex; + +import org.onap.aai.exceptions.AAIException; +import org.onap.aai.introspection.Introspector; +import org.onap.aai.introspection.Loader; +import org.onap.aai.parsers.query.QueryParser; +import org.onap.aai.parsers.query.TraversalStrategy; + +/** + * The Class TraversalQuery. + */ +public class TraversalQuery<E> extends GraphTraversalBuilder<E> { + + /** + * Instantiates a new traversal query. + * + * @param loader the loader + */ + public TraversalQuery(Loader loader, GraphTraversalSource source) { + super(loader, source); + this.factory = new TraversalStrategy(this.loader, this); + } + + /** + * Instantiates a new traversal query. + * + * @param loader the loader + * @param start the start + */ + public TraversalQuery(Loader loader, GraphTraversalSource source, Vertex start) { + super(loader, source, start); + this.factory = new TraversalStrategy(this.loader, this); + } + + protected TraversalQuery(GraphTraversal<Vertex, E> traversal, Loader loader, GraphTraversalSource source, GraphTraversalBuilder<E> gtb) { + super(loader, source); + this.traversal = traversal; + this.stepIndex = gtb.getStepIndex(); + this.parentStepIndex = gtb.getParentStepIndex(); + this.containerStepIndex = gtb.getContainerStepIndex(); + this.factory = new TraversalStrategy(this.loader, this); + this.start = gtb.getStart(); + } + + /** + * @{inheritDoc} + */ + @Override + public QueryParser createQueryFromURI(URI uri) throws UnsupportedEncodingException, AAIException { + return factory.buildURIParser(uri); + } + + /** + * @{inheritDoc} + */ + @Override + public QueryParser createQueryFromRelationship(Introspector relationship) throws UnsupportedEncodingException, AAIException { + return factory.buildRelationshipParser(relationship); + } + + /** + * @{inheritDoc} + */ + @Override + public QueryParser createQueryFromURI(URI uri, MultivaluedMap<String, String> queryParams) + throws UnsupportedEncodingException, AAIException { + return factory.buildURIParser(uri, queryParams); + } + + /** + * @{inheritDoc} + */ + @Override + public QueryParser createQueryFromObjectName(String objName) { + return factory.buildObjectNameParser(objName); + } + + /** + * @{inheritDoc} + */ + @Override + public QueryBuilder<E> newInstance(Vertex start) { + return new TraversalQuery<>(loader, source, start); + } + + /** + * @{inheritDoc} + */ + @Override + public QueryBuilder<E> newInstance() { + return new TraversalQuery<>(loader, source); + } + + @Override + protected QueryBuilder<E> cloneQueryAtStep(int index) { + if (index == 0) { + index = stepIndex; + } + GraphTraversal<Vertex, E> clone = this.traversal.asAdmin().clone(); + GraphTraversal.Admin<Vertex, E> cloneAdmin = clone.asAdmin(); + List<Step> steps = cloneAdmin.getSteps(); + + for (int i = steps.size()-1; i >= index; i--) { + cloneAdmin.removeStep(i); + } + return new TraversalQuery<>(cloneAdmin, loader, source, this); + } + + @Override + protected QueryBuilder<E> removeQueryStepsBetween(int start, int end) { + GraphTraversal<Vertex, E> clone = this.traversal.asAdmin().clone(); + GraphTraversal.Admin<Vertex, E> cloneAdmin = clone.asAdmin(); + + for (int i = end-2; i >= start; i--) { + cloneAdmin.removeStep(i); + } + return new TraversalQuery<>(cloneAdmin, loader, source, this); + } +} |