1 files changed, 275 insertions, 0 deletions
diff --git a/ajsc-aai/src/main/java/org/openecomp/aai/query/builder/GraphTraversalBuilder.java b/ajsc-aai/src/main/java/org/openecomp/aai/query/builder/GraphTraversalBuilder.java
new file mode 100644
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--- /dev/null
+++ b/ajsc-aai/src/main/java/org/openecomp/aai/query/builder/GraphTraversalBuilder.java
@@ -0,0 +1,275 @@
+/*-
+ * ============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.query.builder;
+
+import java.nio.channels.Pipe;
+import java.util.LinkedHashMap;
+import java.util.List;
+
+import org.apache.tinkerpop.gremlin.process.traversal.Step;
+import org.apache.tinkerpop.gremlin.process.traversal.Traversal;
+import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal;
+import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__;
+import org.apache.tinkerpop.gremlin.structure.Vertex;
+import org.openecomp.aai.db.AAIProperties;
+import org.openecomp.aai.exceptions.AAIException;
+import org.openecomp.aai.introspection.Introspector;
+import org.openecomp.aai.introspection.Loader;
+import org.openecomp.aai.serialization.db.EdgeRule;
+import org.openecomp.aai.serialization.db.EdgeRules;
+
+/**
+ * The Class GraphTraversalBuilder.
+ */
+public abstract class GraphTraversalBuilder extends QueryBuilder {
+
+	private GraphTraversal<Vertex, Vertex> traversal = null;
+	
+	private EdgeRules edgeRules = EdgeRules.getInstance();
+	
+	private int parentStepIndex = 0;
+	
+	private int stepIndex = 0;
+	
+	/**
+	 * Instantiates a new graph traversal builder.
+	 *
+	 * @param loader the loader
+	 */
+	public GraphTraversalBuilder(Loader loader) {
+		super(loader);
+		
+		traversal = __.start();
+		
+	}
+	
+	/**
+	 * Instantiates a new graph traversal builder.
+	 *
+	 * @param loader the loader
+	 * @param start the start
+	 */
+	public GraphTraversalBuilder(Loader loader, Vertex start) {
+		super(loader, start);
+		
+		traversal = __.__(start);
+		
+	}
+
+	/**
+	 * @{inheritDoc}
+	 */
+	@Override
+	public QueryBuilder getVerticesByIndexedProperty(String key, Object value) {
+	
+		return this.getVerticesByProperty(key, value);
+	}
+
+	/**
+	 * @{inheritDoc}
+	 */
+	@Override
+	public QueryBuilder getVerticesByProperty(String key, Object value) {
+		
+		//this is because the index is registered as an Integer
+		if (value != null && value.getClass().equals(Long.class)) {
+			traversal.has(key,new Integer(value.toString()));
+		} else {
+			traversal.has(key, value);
+		}
+		stepIndex++;
+		return this;
+	}
+
+	/**
+	 * @{inheritDoc}
+	 */
+	@Override
+	public QueryBuilder getChildVerticesFromParent(String parentKey, String parentValue, String childType) {
+		traversal.has(parentKey, parentValue).has(AAIProperties.NODE_TYPE, childType);
+		stepIndex++;
+		return this;
+	}
+
+	/**
+	 * @{inheritDoc}
+	 */
+	@Override
+	public QueryBuilder getTypedVerticesByMap(String type, LinkedHashMap<String, String> map) {
+		
+		for (String key : map.keySet()) {
+			traversal.has(key, map.get(key));
+			stepIndex++;
+		}
+		traversal.has(AAIProperties.NODE_TYPE, type);
+		stepIndex++;
+		return this;
+	}
+
+	/**
+	 * @{inheritDoc}
+	 */
+	@Override
+	public QueryBuilder createDBQuery(Introspector obj) {
+		this.createKeyQuery(obj);
+		this.createContainerQuery(obj);
+		return this;
+	}
+
+	/**
+	 * @{inheritDoc}
+	 */
+	@Override
+	public QueryBuilder createKeyQuery(Introspector obj) {
+		List<String> keys = obj.getKeys();
+		Object val = null;
+		for (String key : keys) {
+			val = obj.getValue(key);
+			//this is because the index is registered as an Integer
+			if (val != null && val.getClass().equals(Long.class)) {
+				traversal.has(key,new Integer(val.toString()));
+			} else {
+				traversal.has(key, val);
+			}
+			stepIndex++;
+		}
+		return this;
+	}
+
+	/**
+	 * @{inheritDoc}
+	 */
+	@Override
+	
+	public QueryBuilder createContainerQuery(Introspector obj) {
+		String type = obj.getChildDBName();
+		String abstractType = obj.getMetadata("abstract");
+		if (abstractType != null) {
+			String[] inheritors = obj.getMetadata("inheritors").split(",");
+			Traversal<Vertex, Vertex>[] traversals = new Traversal[inheritors.length];
+			for (int i = 0; i < inheritors.length; i++) {
+				traversals[i] = __.has(AAIProperties.NODE_TYPE, inheritors[i]);
+			}
+			traversal.or(traversals);
+		} else {
+			traversal.has(AAIProperties.NODE_TYPE, type);
+		}
+		stepIndex++;
+		return this;
+	}
+
+	/**
+	 * @{inheritDoc}
+	 */
+	@Override
+	public QueryBuilder createEdgeTraversal(Introspector parent, Introspector child) {
+		String parentName = parent.getDbName();
+		String childName = child.getDbName();
+		if (parent.isContainer()) {
+			parentName = parent.getChildDBName();
+		}
+		if (child.isContainer()) {
+			childName = child.getChildDBName();
+		}
+		this.edgeQuery(parentName, childName);
+		return this;
+			
+	}
+	
+	/**
+	 * @{inheritDoc}
+	 */
+	@Override
+	public QueryBuilder createEdgeTraversal(Vertex parent, Introspector child) {
+		
+		String nodeType = parent.<String>property(AAIProperties.NODE_TYPE).orElse(null);
+		this.edgeQuery(nodeType, child.getDbName());
+		return this;
+			
+	}
+	
+	/**
+	 * Edge query.
+	 *
+	 * @param outType the out type
+	 * @param inType the in type
+	 */
+	private void edgeQuery(String outType, String inType) {
+		formBoundary();
+		EdgeRule rule;
+		String label = "";
+		try {
+			rule = edgeRules.getEdgeRule(outType, inType);
+			label = rule.getLabel();
+		} catch (AAIException e) {
+			// TODO Auto-generated catch block
+		}
+		traversal = traversal.out(label);
+		stepIndex++;
+	}
+
+	/**
+	 * @{inheritDoc}
+	 */
+	@Override
+	public Object getQuery() {
+		return this.traversal;
+	}
+	
+	/**
+	 * @{inheritDoc}
+	 */
+	@Override
+	public Object getParentQuery() {
+		if (parentStepIndex == 0) {
+			parentStepIndex = stepIndex;
+		}
+		GraphTraversal<Vertex, Vertex> clone = this.traversal.asAdmin().clone();
+		GraphTraversal.Admin<Vertex, Vertex> cloneAdmin = clone.asAdmin();
+		List<Step> steps = cloneAdmin.getSteps();
+
+		//add two for the garbage identity pipes
+		for (int i = steps.size()-1; i >= parentStepIndex; i--) {
+			cloneAdmin.removeStep(i);
+		}
+
+		return cloneAdmin;
+	}
+	
+	/**
+	 * @{inheritDoc}
+	 */
+	@Override
+	public void formBoundary() {
+		parentStepIndex = stepIndex;
+	}
+	
+	
+	/**
+	 * @{inheritDoc}
+	 */
+	@Override
+	public Vertex getStart() {
+		return this.start;
+	}
+	
+
+}