/*
* 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.cocoon.optional.pipeline.components.sax.fop;
import java.io.OutputStream;
import org.apache.cocoon.pipeline.ProcessingException;
import org.apache.cocoon.pipeline.caching.CacheKey;
import org.apache.cocoon.pipeline.caching.SimpleCacheKey;
import org.apache.cocoon.pipeline.component.CachingPipelineComponent;
import org.apache.cocoon.pipeline.util.StringRepresentation;
import org.apache.cocoon.sax.AbstractSAXSerializer;
import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.Fop;
import org.apache.fop.apps.FopFactory;
import org.apache.xmlgraphics.util.MimeConstants;
import org.xml.sax.ContentHandler;
public class FopSerializer extends AbstractSAXSerializer implements CachingPipelineComponent {
private final static FopFactory FOP_FACTORY = FopFactory.newInstance();
private String outputFormat;
/**
* Create a new FOP serializer that produces a PDF in output
*/
public FopSerializer() {
this(MimeConstants.MIME_PDF);
}
/**
* Create a new FOP serializer that produces the specified mime
*
* @param outputFormat the output's mime type
* @see {@link MimeConstants}
*/
public FopSerializer(String outputFormat) {
if (outputFormat == null) {
throw new IllegalArgumentException("The parameter 'outputFormat' mustn't be null.");
}
this.outputFormat = outputFormat;
}
public CacheKey constructCacheKey() {
return new SimpleCacheKey();
}
@Override
public void setOutputStream(OutputStream outputStream) {
try {
Fop fop = FOP_FACTORY.newFop(this.outputFormat, outputStream);
ContentHandler fopContentHandler = fop.getDefaultHandler();
this.setContentHandler(fopContentHandler);
} catch (FOPException e) {
throw new ProcessingException("Impossible to initialize FOPSerializer", e);
}
}
@Override
public String toString() {
return StringRepresentation.buildString(this, "outputFormat=" + this.outputFormat);
}
}