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/**
* ============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);
}
}
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