001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.camel.component.dataformat; 018 019import org.apache.camel.AsyncCallback; 020import org.apache.camel.AsyncProcessor; 021import org.apache.camel.Component; 022import org.apache.camel.Consumer; 023import org.apache.camel.Exchange; 024import org.apache.camel.Processor; 025import org.apache.camel.Producer; 026import org.apache.camel.impl.DefaultAsyncProducer; 027import org.apache.camel.impl.DefaultEndpoint; 028import org.apache.camel.processor.MarshalProcessor; 029import org.apache.camel.processor.UnmarshalProcessor; 030import org.apache.camel.spi.DataFormat; 031import org.apache.camel.spi.Metadata; 032import org.apache.camel.spi.UriEndpoint; 033import org.apache.camel.spi.UriPath; 034import org.apache.camel.util.ServiceHelper; 035 036/** 037 * The dataformat component is used for working with Data Formats as if it was a regular Component supporting Endpoints and URIs. 038 */ 039@UriEndpoint(firstVersion = "2.12.0", scheme = "dataformat", title = "Data Format", syntax = "dataformat:name:operation", producerOnly = true, 040 label = "core,transformation", lenientProperties = true) 041public class DataFormatEndpoint extends DefaultEndpoint { 042 043 private AsyncProcessor processor; 044 private DataFormat dataFormat; 045 046 @UriPath(description = "Name of data format") @Metadata(required = "true") 047 private String name; 048 @UriPath(enums = "marshal,unmarshal") @Metadata(required = "true") 049 private String operation; 050 051 public DataFormatEndpoint() { 052 } 053 054 public DataFormatEndpoint(String endpointUri, Component component, DataFormat dataFormat) { 055 super(endpointUri, component); 056 this.dataFormat = dataFormat; 057 } 058 059 public String getName() { 060 return name; 061 } 062 063 public void setName(String name) { 064 this.name = name; 065 } 066 067 public DataFormat getDataFormat() { 068 return dataFormat; 069 } 070 071 public void setDataFormat(DataFormat dataFormat) { 072 this.dataFormat = dataFormat; 073 } 074 075 public String getOperation() { 076 return operation; 077 } 078 079 /** 080 * Operation to use either marshal or unmarshal 081 */ 082 public void setOperation(String operation) { 083 this.operation = operation; 084 } 085 086 @Override 087 public Producer createProducer() throws Exception { 088 return new DefaultAsyncProducer(this) { 089 @Override 090 public boolean process(Exchange exchange, AsyncCallback callback) { 091 return processor.process(exchange, callback); 092 } 093 094 @Override 095 public String toString() { 096 return "DataFormatProducer[" + dataFormat + "]"; 097 } 098 }; 099 } 100 101 @Override 102 public Consumer createConsumer(Processor processor) throws Exception { 103 throw new UnsupportedOperationException("Cannot consume from data format"); 104 } 105 106 @Override 107 public boolean isSingleton() { 108 return true; 109 } 110 111 @Override 112 public boolean isLenientProperties() { 113 return true; 114 } 115 116 @Override 117 protected void doStart() throws Exception { 118 if (dataFormat == null && name != null) { 119 dataFormat = getCamelContext().resolveDataFormat(name); 120 } 121 if (operation.equals("marshal")) { 122 MarshalProcessor marshal = new MarshalProcessor(dataFormat); 123 marshal.setCamelContext(getCamelContext()); 124 125 processor = marshal; 126 } else { 127 UnmarshalProcessor unmarshal = new UnmarshalProcessor(dataFormat); 128 unmarshal.setCamelContext(getCamelContext()); 129 130 processor = unmarshal; 131 } 132 133 ServiceHelper.startServices(dataFormat, processor); 134 super.doStart(); 135 } 136 137 @Override 138 protected void doStop() throws Exception { 139 ServiceHelper.stopServices(processor, dataFormat); 140 super.doStop(); 141 } 142}