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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.query;
/*
package org.openecomp.aai.serialization.engines.query;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.openecomp.aai.db.AAIProperties;
import org.openecomp.aai.query.builder.QueryBuilder;
import org.openecomp.aai.serialization.engines.TransactionalGraphEngine;
import com.tinkerpop.blueprints.Direction;
import com.tinkerpop.blueprints.TransactionalGraph;
import com.tinkerpop.blueprints.Vertex;
import com.tinkerpop.gremlin.java.GremlinPipeline;
import com.tinkerpop.pipes.IdentityPipe;
import com.tinkerpop.pipes.PipeFunction;
import com.tinkerpop.pipes.branch.LoopPipe;
public class GremlinPipelineQueryEngine extends QueryEngine {
public GremlinPipelineQueryEngine(TransactionalGraphEngine graphEngine) {
super(graphEngine);
}
@Override
public List<Vertex> executeQuery(TransactionalGraph g, QueryBuilder query) {
List<Vertex> results = null;
Vertex start = query.getStart();
if (start != null) {
results = ((GremlinPipeline)query.getQuery()).cast(Vertex.class).toList();
} else {
GremlinPipeline pipe = new GremlinPipeline(g);
results = process(pipe, (GremlinPipeline)query.getQuery());
}
return results;
}
@Override
public List<Vertex> executeParentQuery(TransactionalGraph g, QueryBuilder query) {
List<Vertex> results = null;
Vertex start = query.getStart();
if (start != null) {
results = ((GremlinPipeline)query.getParentQuery()).cast(Vertex.class).toList();
} else {
GremlinPipeline pipe = new GremlinPipeline(g);
results = process(pipe, (GremlinPipeline)query.getParentQuery());
}
return results;
}
@Override
public List<Vertex> findParents(Vertex start) {
GremlinPipeline<Vertex, Vertex> pipe = new GremlinPipeline(start).as("x").inE()
.has("isParent", true).outV().loop("x", new PipeFunction<LoopPipe.LoopBundle<Vertex>, Boolean>() {
@Override
public Boolean compute(LoopPipe.LoopBundle<Vertex> argument) {
GremlinPipeline<Vertex, Long> pipe = new GremlinPipeline<>(argument.getObject());
return pipe.inE().has("isParent", true).count() == 1 || argument.getLoops() < 100;
}
}, new PipeFunction<LoopPipe.LoopBundle<Vertex>, Boolean>() {
@Override
public Boolean compute(LoopPipe.LoopBundle<Vertex> argument) {
return true;
}
});
List<Vertex> results = pipe.toList();
results.add(0, start);
return results;
}
@Override
public List<Vertex> findChildren(Vertex start) {
Set<Vertex> seen = new HashSet<>();
seen.add(start);
GremlinPipeline<Vertex, Vertex> pipe = new GremlinPipeline(start).as("x").outE().has("isParent", true).inV()
.except(seen).store(seen).loop("x", new PipeFunction<LoopPipe.LoopBundle<Vertex>, Boolean>() {
@Override
public Boolean compute(LoopPipe.LoopBundle<Vertex> argument) {
GremlinPipeline<Vertex, Long> pipe = new GremlinPipeline<>(argument.getObject());
return pipe.outE().has("isParent", true).count() >= 1 || argument.getLoops() < 100;
}
}, new PipeFunction<LoopPipe.LoopBundle<Vertex>, Boolean>() {
@Override
public Boolean compute(LoopPipe.LoopBundle<Vertex> argument) {
return true;
}
});
List<Vertex> results = pipe.toList();
results.add(0, start);
return results;
}
@Override
public List<Vertex> findDeletable(Vertex start) {
Set<Vertex> seen = new HashSet<>();
seen.add(start);
GremlinPipeline<Vertex, Vertex> pipe = new GremlinPipeline<Vertex, Vertex>(start).as("x").outE().or(
new GremlinPipeline(new IdentityPipe()).has("isParent", true),
new GremlinPipeline(new IdentityPipe()).has("hasDelTarget", true)).inV()
.except(seen).store(seen).loop("x", new PipeFunction<LoopPipe.LoopBundle<Vertex>, Boolean>() {
@Override
public Boolean compute(LoopPipe.LoopBundle<Vertex> argument) {
GremlinPipeline<Vertex, Long> pipe = new GremlinPipeline<>(argument.getObject());
return pipe.outE().or(
new GremlinPipeline(new IdentityPipe()).has("isParent", true),
new GremlinPipeline(new IdentityPipe()).has("hasDelTarget", true)).count() >= 1 || argument.getLoops() < 100;
}
}, new PipeFunction<LoopPipe.LoopBundle<Vertex>, Boolean>() {
@Override
public Boolean compute(LoopPipe.LoopBundle<Vertex> argument) {
return true;
}
});
List<Vertex> results = pipe.toList();
results.add(0, start);
return results;
}
private List<Vertex> process(GremlinPipeline start, GremlinPipeline pipe) {
return start.add(pipe).cast(Vertex.class).toList();
}
@Override
public List<Vertex> findRelatedVertices(Vertex start, Direction direction, String label, String nodeType) {
GremlinPipeline<Vertex, Vertex> pipe = new GremlinPipeline<Vertex, Vertex>(start);
switch (direction) {
case OUT:
pipe.out(label);
break;
case IN:
pipe.in(label);
break;
case BOTH:
pipe.both(label);
break;
default:
break;
}
pipe.has(AAIProperties.NODE_TYPE, nodeType).dedup();
List<Vertex> result = pipe.toList();
return result;
}
}
*/
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