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/*
* 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.
*/
/* $Id$ */
package org.apache.fop.threading;
import java.io.InputStream;
import java.io.OutputStream;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Templates;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.sax.SAXResult;
import javax.xml.transform.stream.StreamSource;
import org.apache.avalon.framework.activity.Initializable;
import org.apache.avalon.framework.configuration.Configurable;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.avalon.framework.logger.AbstractLogEnabled;
import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.apps.Fop;
import org.apache.fop.apps.FopFactory;
import org.apache.fop.apps.MimeConstants;
/**
* Default implementation of the FOProcessor interface using FOP.
*/
public class FOProcessorImpl extends AbstractLogEnabled
implements FOProcessor, Configurable, Initializable {
private FopFactory fopFactory = FopFactory.newInstance();
private TransformerFactory factory = TransformerFactory.newInstance();
private String userconfig;
private String mime;
private String fileExtension;
/** {@inheritDoc} */
public void configure(Configuration configuration) throws ConfigurationException {
this.userconfig = configuration.getChild("userconfig").getValue(null);
this.mime = configuration.getChild("mime").getValue(MimeConstants.MIME_PDF);
this.fileExtension = configuration.getChild("extension").getValue(".pdf");
}
/** {@inheritDoc} */
public void initialize() throws Exception {
if (this.userconfig != null) {
getLogger().debug("Setting user config: " + userconfig);
fopFactory.setUserConfig(this.userconfig);
}
}
/** {@inheritDoc} */
public void process(InputStream in, Templates templates, OutputStream out)
throws org.apache.fop.apps.FOPException, java.io.IOException {
FOUserAgent foUserAgent = fopFactory.newFOUserAgent();
Fop fop = fopFactory.newFop(this.mime, foUserAgent, out);
try {
Transformer transformer;
if (templates == null) {
transformer = factory.newTransformer();
} else {
transformer = templates.newTransformer();
}
Source src = new StreamSource(in);
Result res = new SAXResult(fop.getDefaultHandler());
transformer.transform(src, res);
} catch (TransformerException e) {
throw new FOPException(e);
}
}
/** {@inheritDoc} */
public String getTargetFileExtension() {
return this.fileExtension;
}
}
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