Examples of org.neo4j.cypher.ExecutionEngine.execute()

org.neo4j.cypher.ExecutionEngine.execute()

        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);
            }

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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);
            }

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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);
            }

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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);

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            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);

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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);

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            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);

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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);

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            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);

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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()) {

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