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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.serialization.queryformats;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;
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.javatuples.Pair;
import org.onap.aai.db.props.AAIProperties;
import org.onap.aai.serialization.queryformats.exceptions.AAIFormatQueryResultFormatNotSupported;
import org.onap.aai.serialization.queryformats.exceptions.AAIFormatVertexException;
import com.google.gson.JsonObject;
public class Count implements FormatMapper {
@Override
public JsonObject formatObject(Object o) throws AAIFormatVertexException, AAIFormatQueryResultFormatNotSupported {
@SuppressWarnings("unchecked")
List<Object> list = (List<Object>) o;
final JsonObject countResult = new JsonObject();
list.stream().map(this::getCount)
.filter( Optional<Pair<String, Long>>::isPresent )
.map(Optional<Pair<String, Long>>::get)
.collect( Collectors.toConcurrentMap( Pair::getValue0, Pair::getValue1, Long::sum ) )
.forEach( (k,v) -> countResult.addProperty(k, v) );
return countResult;
}
@Override
public int parallelThreshold() {
return 20;
}
private Optional<Pair<String, Long>> getCount(Object o){
Pair<String, Long> pair = null;
if (o instanceof Vertex) {
Vertex v = (Vertex) o;
pair = Pair.with(v.property(AAIProperties.NODE_TYPE).value().toString(), 1L);
} else if (o instanceof Tree) {
pair = Pair.with("trees", 1L);
} else if (o instanceof Path) {
pair = Pair.with("paths", 1L);
} else if (o instanceof Long) {
pair = Pair.with("count", (Long)o);
}
if (pair == null) {
return Optional.<Pair<String, Long>>empty();
}
return Optional.<Pair<String, Long>>of(pair);
}
}
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