Examples of org.neo4j.cypher.ExecutionResult

org.neo4j.cypher.ExecutionResult

        Transaction tx = graphDb.beginTx();
        try {
            CypherParser parser = new CypherParser();
            ExecutionEngine engine = new ExecutionEngine(this.graphDb);
            Query query = parser.parse("start v=(vehicles, 'vehicleId:" + vehicleId + "')  match (v) <-[USE]- (w)    return w");
            ExecutionResult result = engine.execute(query);


            if (result.isEmpty()) {
                throw new IllegalStateException("No Procedure attached to the Vehicle " + vehicleId);
            }


            Iterator<Node> n_column = result.columnAs("w");
            Node procedure = n_column.next();


            String procedureId = (String) procedure.getProperty("procedureId");


            tx.success();

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        Transaction tx = graphDb.beginTx();
        try {
            CypherParser parser = new CypherParser();
            ExecutionEngine engine = new ExecutionEngine(this.graphDb);
            Query query = parser.parse("start e=(emergencies, 'emergencyId:" + emergencyId + "')  match (e) <-[CREATES]- (c)    return c");
            ExecutionResult result = engine.execute(query);


            if (result.isEmpty()) {
                throw new IllegalStateException("No Call attached to the Emergency " + emergencyId);
            }


            Iterator<Node> n_column = result.columnAs("c");
            Node call = n_column.next();


            String callId = (String) call.getProperty("callId");


            tx.success();

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        Transaction tx = graphDb.beginTx();
        try {
            CypherParser parser = new CypherParser();
            ExecutionEngine engine = new ExecutionEngine(this.graphDb);
            Query query = parser.parse("start c=(calls, 'callId:" + callId + "')  match (c) -[CREATES]-> (e)    return e");
            ExecutionResult result = engine.execute(query);


            if (result.isEmpty()) {
                throw new IllegalStateException("No Emergency attached to the Call " + callId);
            }


            Iterator<Node> n_column = result.columnAs("e");
            Node call = n_column.next();


            String emergencyId = (String) call.getProperty("emergencyId");


            tx.success();

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        try {
            CypherParser parser = new CypherParser();
            ExecutionEngine engine = new ExecutionEngine(this.graphDb);
            Query query = parser.parse("start n=(procedures, 'procedureId:" + procedureId + "')  return n");
            ExecutionResult result = engine.execute(query);
            Iterator<Node> n_column = result.columnAs("n");
            Node procedure = n_column.next();


            query = parser.parse("start n=(vehicles, 'vehicleId:" + vehicleId + "')  return n");
            result = engine.execute(query);
            n_column = result.columnAs("n");
            Node vehicle = n_column.next();


            procedure.createRelationshipTo(vehicle, EmergencyRelationshipType.USE);


            tx.success();

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        try {
            CypherParser parser = new CypherParser();
            ExecutionEngine engine = new ExecutionEngine(this.graphDb);
            Query query = parser.parse("start n=(procedures, 'procedureId:" + parentProcedureId + "')  return n");
            ExecutionResult result = engine.execute(query);
            Iterator<Node> n_column = result.columnAs("n");
            Node parentProcedure = n_column.next();


            query = parser.parse("start n=(procedures, 'procedureId:" + childProcedureId + "')  return n");
            result = engine.execute(query);
            n_column = result.columnAs("n");
            Node childProcedure = n_column.next();


            parentProcedure.createRelationshipTo(childProcedure, EmergencyRelationshipType.SUB);


            tx.success();

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        try {
            CypherParser parser = new CypherParser();
            ExecutionEngine engine = new ExecutionEngine(this.graphDb);
            Query query = parser.parse("start n=(emergencies, 'emergencyId:" + emergencyId + "')  return n");
            ExecutionResult result = engine.execute(query);
            Iterator<Node> n_column = result.columnAs("n");
            Node emergency = n_column.next();


            query = parser.parse("start n=(channels, 'channelId:" + channelId + "')  return n");
            result = engine.execute(query);
            n_column = result.columnAs("n");
            Node channel = n_column.next();


            emergency.createRelationshipTo(channel, EmergencyRelationshipType.CONSUME);


            tx.success();

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        try {
            CypherParser parser = new CypherParser();
            ExecutionEngine engine = new ExecutionEngine(this.graphDb);
            Query query = parser.parse("start n=(vehicles, 'vehicleId:" + vehicleId + "')  return n");
            ExecutionResult result = engine.execute(query);
            Iterator<Node> n_column = result.columnAs("n");
            Node vehicle = n_column.next();
            //Removing the node from the index
            this.vehiclesIndex.remove(vehicle);
            for (Relationship rel : vehicle.getRelationships()) {
                rel.delete();

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    }


    public void optimize() {


        ExecutionEngine engine = new ExecutionEngine(graphDb, StringLogger.DEV_NULL);
        ExecutionResult result = engine.execute("START n=relationship:ways('WAY_ID: *') RETURN distinct n.WAY_ID");
        while (result.hasNext()) {


            Map<String, Object> objectMap = result.next();
            Option<Object> option = objectMap.get("n.WAY_ID");
            Long wayId = (Long) option.get();


            optimizeWay(wayId);

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      Map<String, Object> params = new HashMap<String, Object>();
      params.put( "node", author );
      //ExecutionResult result = engine.execute( "start n=node({node}) return n.name", params );
      
      String query = "START author=node({node}) MATCH author-[:"+DBRelationshipTypes.WRITTEN_BY.name()+"]-()-[:"+DBRelationshipTypes.WRITTEN_BY.name()+"]- coAuthor RETURN coAuthor";
      ExecutionResult result = engine.execute( query, params);
      scala.collection.Iterator<Node> it = result.columnAs("coAuthor");
      while (it.hasNext()){
        Node coAuthor = it.next();
        resCnt++;
      }
    }

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