creates delete converter

Author: otaviojava

artemis-graph/src/main/java/org/jnosql/artemis/graph/query/DeleteQueryConverter.java

@@ -1,4 +1,45 @@
+/*
+ *  Copyright (c) 2017 Otávio Santana and others
+ *   All rights reserved. This program and the accompanying materials
+ *   are made available under the terms of the Eclipse Public License v1.0
+ *   and Apache License v2.0 which accompanies this distribution.
+ *   The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
+ *   and the Apache License v2.0 is available at http://www.opensource.org/licenses/apache2.0.php.
+ *
+ *   You may elect to redistribute this code under either of these licenses.
+ *
+ *   Contributors:
+ *
+ *   Otavio Santana
+ */
 package org.jnosql.artemis.graph.query;
 
-public class DeleteQueryConverter {
+import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal;
+import org.apache.tinkerpop.gremlin.structure.Vertex;
+import org.jnosql.aphrodite.antlr.method.DeleteMethodFactory;
+import org.jnosql.artemis.reflection.ClassRepresentation;
+import org.jnosql.query.Condition;
+import org.jnosql.query.DeleteQuery;
+import org.jnosql.query.Where;
+
+import java.util.List;
+import java.util.function.Function;
+
+class DeleteQueryConverter extends AbstractQueryConvert implements Function<GraphQueryMethod, List<Vertex>> {
+
+    @Override
+    public List<Vertex> apply(GraphQueryMethod graphQuery) {
+        DeleteMethodFactory factory = DeleteMethodFactory.get();
+        DeleteQuery deleteQuery = factory.apply(graphQuery.getMethod(), graphQuery.getEntityName());
+        ClassRepresentation representation = graphQuery.getRepresentation();
+        GraphTraversal<Vertex, Vertex> traversal = graphQuery.getTraversal();
+        if (deleteQuery.getWhere().isPresent()) {
+            Where where = deleteQuery.getWhere().get();
+
+            Condition condition = where.getCondition();
+            traversal.filter(getPredicate(graphQuery, condition, representation));
+        }
+
+
+    }
 }