| /** |
| * 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.dataformat.beanio; |
| |
| import java.io.BufferedReader; |
| import java.io.BufferedWriter; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.OutputStream; |
| import java.io.OutputStreamWriter; |
| import java.nio.charset.Charset; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.apache.camel.CamelContext; |
| import org.apache.camel.CamelContextAware; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.spi.DataFormat; |
| import org.apache.camel.support.ServiceSupport; |
| import org.apache.camel.util.IOHelper; |
| import org.apache.camel.util.ObjectHelper; |
| import org.apache.camel.util.ResourceHelper; |
| import org.beanio.BeanReader; |
| import org.beanio.BeanReaderErrorHandlerSupport; |
| import org.beanio.BeanWriter; |
| import org.beanio.InvalidRecordException; |
| import org.beanio.StreamFactory; |
| import org.beanio.UnexpectedRecordException; |
| import org.beanio.UnidentifiedRecordException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * A <a href="http://camel.apache.org/data-format.html">data format</a> ( |
| * {@link DataFormat}) for beanio data. |
| */ |
| public class BeanIODataFormat extends ServiceSupport implements DataFormat, CamelContextAware { |
| |
| private static final String LOG_PREFIX = "BeanIO: "; |
| private static final transient Logger LOG = LoggerFactory.getLogger(BeanIODataFormat.class); |
| |
| private transient CamelContext camelContext; |
| private transient StreamFactory factory; |
| private String streamName; |
| private String mapping; |
| private boolean ignoreUnidentifiedRecords; |
| private boolean ignoreUnexpectedRecords; |
| private boolean ignoreInvalidRecords; |
| private Charset encoding = Charset.defaultCharset(); |
| |
| public BeanIODataFormat() { |
| } |
| |
| public BeanIODataFormat(String mapping, String streamName) { |
| this.mapping = mapping; |
| this.streamName = streamName; |
| } |
| |
| @Override |
| protected void doStart() throws Exception { |
| ObjectHelper.notNull(streamName, "Stream name not configured."); |
| if (factory == null) { |
| // Create the stream factory that will be used to read/write objects. |
| factory = StreamFactory.newInstance(); |
| |
| // Load the mapping file using the resource helper to ensure it can be loaded in OSGi and other environments |
| InputStream is = ResourceHelper.resolveMandatoryResourceAsInputStream(getCamelContext().getClassResolver(), mapping); |
| try { |
| factory.load(is); |
| } finally { |
| IOHelper.close(is); |
| } |
| } |
| } |
| |
| @Override |
| protected void doStop() throws Exception { |
| factory = null; |
| } |
| |
| public CamelContext getCamelContext() { |
| return camelContext; |
| } |
| |
| public void setCamelContext(CamelContext camelContext) { |
| this.camelContext = camelContext; |
| } |
| |
| public void marshal(Exchange exchange, Object body, OutputStream stream) throws Exception { |
| List<Object> models = getModels(exchange, body); |
| writeModels(stream, models); |
| } |
| |
| public Object unmarshal(Exchange exchange, InputStream stream) throws Exception { |
| return readModels(exchange, stream); |
| } |
| |
| @SuppressWarnings("unchecked") |
| private List<Object> getModels(Exchange exchange, Object body) { |
| List<Object> models; |
| if ((models = exchange.getContext().getTypeConverter().convertTo(List.class, body)) == null) { |
| models = new ArrayList<Object>(); |
| Iterator<Object> it = ObjectHelper.createIterator(body); |
| while (it.hasNext()) { |
| models.add(it.next()); |
| } |
| } |
| return models; |
| } |
| |
| private void writeModels(OutputStream stream, List<Object> models) { |
| BufferedWriter streamWriter = new BufferedWriter(new OutputStreamWriter(stream, encoding)); |
| BeanWriter out = factory.createWriter(streamName, streamWriter); |
| |
| for (Object obj : models) { |
| out.write(obj); |
| } |
| |
| out.flush(); |
| out.close(); |
| } |
| |
| private List<Object> readModels(Exchange exchange, InputStream stream) { |
| List<Object> results = new ArrayList<Object>(); |
| BufferedReader streamReader = new BufferedReader(new InputStreamReader(stream, encoding)); |
| |
| BeanReader in = factory.createReader(streamName, streamReader); |
| |
| try { |
| registerErrorHandler(in); |
| |
| Object readObject; |
| while ((readObject = in.read()) != null) { |
| if (readObject instanceof BeanIOHeader) { |
| exchange.getOut().getHeaders().putAll(((BeanIOHeader) readObject).getHeaders()); |
| } |
| results.add(readObject); |
| } |
| } finally { |
| in.close(); |
| } |
| |
| return results; |
| } |
| |
| private void registerErrorHandler(BeanReader in) { |
| in.setErrorHandler(new BeanReaderErrorHandlerSupport() { |
| |
| @Override |
| public void invalidRecord(InvalidRecordException ex) throws Exception { |
| LOG.warn(LOG_PREFIX + ex.getMessage() + ": " + ex.getContext().getRecordText()); |
| |
| if (!ignoreInvalidRecords) { |
| throw ex; |
| } |
| } |
| |
| @Override |
| public void unexpectedRecord(UnexpectedRecordException ex) throws Exception { |
| LOG.warn(LOG_PREFIX + ex.getMessage() + ": " + ex.getContext().getRecordText()); |
| |
| if (!ignoreUnexpectedRecords) { |
| throw ex; |
| } |
| } |
| |
| @Override |
| public void unidentifiedRecord(UnidentifiedRecordException ex) throws Exception { |
| LOG.warn(LOG_PREFIX + ex.getMessage() + ": " + ex.getContext().getRecordText()); |
| |
| if (!ignoreUnidentifiedRecords) { |
| throw ex; |
| } |
| } |
| }); |
| } |
| |
| public Charset getEncoding() { |
| return encoding; |
| } |
| |
| public void setEncoding(Charset encoding) { |
| this.encoding = encoding; |
| } |
| |
| public void setEncoding(String encoding) { |
| this.encoding = Charset.forName(encoding); |
| } |
| |
| public boolean isIgnoreInvalidRecords() { |
| return ignoreInvalidRecords; |
| } |
| |
| public void setIgnoreInvalidRecords(boolean ignoreInvalidRecords) { |
| this.ignoreInvalidRecords = ignoreInvalidRecords; |
| } |
| |
| public boolean isIgnoreUnexpectedRecords() { |
| return ignoreUnexpectedRecords; |
| } |
| |
| public void setIgnoreUnexpectedRecords(boolean ignoreUnexpectedRecords) { |
| this.ignoreUnexpectedRecords = ignoreUnexpectedRecords; |
| } |
| |
| public boolean isIgnoreUnidentifiedRecords() { |
| return ignoreUnidentifiedRecords; |
| } |
| |
| public void setIgnoreUnidentifiedRecords(boolean ignoreUnidentifiedRecords) { |
| this.ignoreUnidentifiedRecords = ignoreUnidentifiedRecords; |
| } |
| |
| public String getMapping() { |
| return mapping; |
| } |
| |
| public void setMapping(String mapping) { |
| this.mapping = mapping; |
| } |
| |
| public String getStreamName() { |
| return streamName; |
| } |
| |
| public void setStreamName(String streamName) { |
| this.streamName = streamName; |
| } |
| } |