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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* 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.sdc.be.model.operations.utils;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.tinkerpop.gremlin.structure.Direction;
import org.apache.tinkerpop.gremlin.structure.Edge;
import org.apache.tinkerpop.gremlin.structure.Element;
import org.apache.tinkerpop.gremlin.structure.Property;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.apache.tinkerpop.gremlin.structure.util.ElementHelper;
import org.openecomp.sdc.be.dao.neo4j.GraphEdgeLabels;
import org.openecomp.sdc.be.dao.titan.TitanOperationStatus;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class GraphDeleteUtil {
private static Logger log = LoggerFactory.getLogger(GraphDeleteUtil.class.getName());
public TitanOperationStatus deleteChildrenNodes(Vertex rootVertex, GraphEdgeLabels edgeType) {
// Iterable<Edge> edgesCreatorIterable =
// rootVertex.getEdges(Direction.OUT,
// edgeType.name());
Iterator<Edge> edgesCreatorIterator = rootVertex.edges(Direction.OUT, edgeType.getProperty());
while (edgesCreatorIterator.hasNext()) {
Edge edge = edgesCreatorIterator.next();
Vertex incomingVertex = edge.inVertex();
Iterator<Edge> outEdges = incomingVertex.edges(Direction.OUT);
if (outEdges.hasNext()) {
return TitanOperationStatus.CANNOT_DELETE_NON_LEAF_NODE;
} else {
Map<String, Object> properties = null;
if (log.isDebugEnabled()) {
properties = getProperties(incomingVertex);
log.debug("Going to delete vertex {}", properties);
}
incomingVertex.remove();
if (log.isDebugEnabled()) {
log.debug("After deleting vertex {}", properties);
}
}
}
//
// if (edgesCreatorIterable != null) {
// for (Edge edge : edgesCreatorIterable) {
//
// Vertex incomingVertex = edge.getVertex(Direction.IN);
// Iterable<Edge> outEdges = incomingVertex.getEdges(Direction.OUT);
// if (outEdges != null) {
// if (outEdges.iterator().hasNext()) {
// return TitanOperationStatus.CANNOT_DELETE_NON_LEAF_NODE;
// } else {
// Map<String, Object> properties = null;
// if (log.isDebugEnabled()) {
// properties = ElementHelper.getProperties(incomingVertex);
// log.debug("Going to delete vertex {}", properties);
// }
// incomingVertex.remove();
// if (log.isDebugEnabled()) {
// log.debug("After deleting vertex {}", properties);
// }
// }
// }
//
// }
// }
return TitanOperationStatus.OK;
}
public Map<String, Object> getProperties(Element element) {
Map<String, Object> result = null;
if (element.keys() != null && element.keys().size() > 0) {
Map<String, Property> propertyMap = ElementHelper.propertyMap(element,
element.keys().toArray(new String[element.keys().size()]));
result = new HashMap<String, Object>();
for (Entry<String, Property> entry : propertyMap.entrySet()) {
String key = entry.getKey();
Object value = entry.getValue().value();
result.put(key, value);
}
}
return result;
}
}
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