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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 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.onap.aai.serialization.queryformats;
import java.util.Iterator;
import java.util.List;
import org.apache.tinkerpop.gremlin.process.traversal.Path;
import org.apache.tinkerpop.gremlin.process.traversal.step.util.Tree;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.onap.aai.serialization.queryformats.exceptions.AAIFormatQueryResultFormatNotSupported;
import org.onap.aai.serialization.queryformats.exceptions.AAIFormatVertexException;
import com.google.gson.JsonArray;
import com.google.gson.JsonObject;
public abstract class MultiFormatMapper implements FormatMapper {
@Override
public JsonObject formatObject(Object input) throws AAIFormatVertexException, AAIFormatQueryResultFormatNotSupported {
if (input instanceof Vertex) {
return this.getJsonFromVertex((Vertex) input);
} else if (input instanceof Tree) {
return this.getJsonFomTree((Tree<?>) input);
} else if (input instanceof Path) {
return this.getJsonFromPath((Path) input);
} else {
throw new AAIFormatQueryResultFormatNotSupported();
}
}
protected abstract JsonObject getJsonFromVertex(Vertex input) throws AAIFormatVertexException;
protected JsonObject getJsonFromPath(Path input) throws AAIFormatVertexException {
List<Object> path = input.objects();
JsonObject jo = new JsonObject();
JsonArray ja = new JsonArray();
for (Object o : path) {
if (o instanceof Vertex) {
ja.add(this.getJsonFromVertex((Vertex)o));
}
}
jo.add("path", ja);
return jo;
}
protected JsonObject getJsonFomTree(Tree<?> tree) throws AAIFormatVertexException {
if (tree.isEmpty()) {
return new JsonObject();
}
JsonObject t = new JsonObject();
JsonArray ja = this.getNodesArray(tree);
if (ja.size() > 0) {
t.add("nodes", ja);
}
return t;
}
private JsonArray getNodesArray (Tree<?> tree) throws AAIFormatVertexException {
JsonArray nodes = new JsonArray();
Iterator<?> it = tree.keySet().iterator();
while (it.hasNext()) {
Object o = it.next();
JsonObject me = new JsonObject();
if (o instanceof Vertex) {
me = this.getJsonFromVertex((Vertex) o);
}
JsonArray ja = this.getNodesArray((Tree<?>) tree.get(o));
if (ja.size() > 0) {
me.add("nodes", ja);
}
nodes.add(me);
}
return nodes;
}
@Override
public int parallelThreshold() {
return 100;
}
}
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