| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package org.apache.plc4x.java.opcua.optimizer; |
| |
| import org.apache.plc4x.java.api.messages.PlcReadRequest; |
| import org.apache.plc4x.java.api.messages.PlcRequest; |
| import org.apache.plc4x.java.api.model.PlcField; |
| import org.apache.plc4x.java.opcua.field.OpcuaField; |
| import org.apache.plc4x.java.spi.context.DriverContext; |
| import org.apache.plc4x.java.spi.messages.DefaultPlcReadRequest; |
| import org.apache.plc4x.java.spi.optimizer.BaseOptimizer; |
| |
| import java.util.LinkedHashMap; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| public class OpcuaOptimizer extends BaseOptimizer{ |
| |
| @Override |
| protected List<PlcRequest> processReadRequest(PlcReadRequest readRequest, DriverContext driverContext) { |
| List<PlcRequest> processedRequests = new LinkedList<>(); |
| |
| // List of all items in the current request. |
| LinkedHashMap<String, PlcField> curFields = new LinkedHashMap<>(); |
| |
| for (String fieldName : readRequest.getFieldNames()) { |
| OpcuaField field = (OpcuaField) readRequest.getField(fieldName); |
| curFields.put(fieldName, field); |
| } |
| |
| // Create a new PlcReadRequest from the remaining field items. |
| if(!curFields.isEmpty()) { |
| processedRequests.add(new DefaultPlcReadRequest( |
| ((DefaultPlcReadRequest) readRequest).getReader(), curFields)); |
| } |
| |
| return processedRequests; |
| } |
| |
| |
| } |