| /* |
| * 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.camel.component.flink; |
| |
| import static java.lang.String.format; |
| |
| import org.apache.camel.CamelContext; |
| import org.apache.flink.api.java.DataSet; |
| |
| public abstract class ConvertingDataSetCallback<T> implements DataSetCallback<T> { |
| |
| private final CamelContext camelContext; |
| |
| private final Class[] payloadTypes; |
| |
| public ConvertingDataSetCallback(CamelContext camelContext, Class... payloadTypes) { |
| this.camelContext = camelContext; |
| this.payloadTypes = payloadTypes; |
| } |
| |
| @Override |
| public T onDataSet(DataSet ds, Object... payloads) { |
| if (payloads.length != payloadTypes.length) { |
| String message = format("Received %d payloads, but expected %d.", payloads.length, payloadTypes.length); |
| throw new IllegalArgumentException(message); |
| } |
| for (int i = 0; i < payloads.length; i++) { |
| payloads[i] = camelContext.getTypeConverter().convertTo(payloadTypes[i], payloads[i]); |
| } |
| return doOnDataSet(ds, payloads); |
| } |
| |
| public abstract T doOnDataSet(DataSet ds, Object... payloads); |
| } |