1 files changed, 83 insertions, 0 deletions
diff --git a/aai-core/src/main/java/org/onap/aai/serialization/queryformats/Count.java b/aai-core/src/main/java/org/onap/aai/serialization/queryformats/Count.java
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+++ b/aai-core/src/main/java/org/onap/aai/serialization/queryformats/Count.java
@@ -0,0 +1,83 @@
+/**
+ * ============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);
+	}
+
+}