org.apache.fop.render.intermediate.util
Class IFConcatenator

java.lang.Object
  org.apache.fop.render.intermediate.util.IFConcatenator

public class IFConcatenator
extends java.lang.Object

This class allows to concatenate multiple intermediate format files to a single output file in the final format. It is based on the SAX API and is therefore very fast and does not require to load the individual documents into memory as DOM documents, for example.

Note: This class will filter/ignore any document navigation events. Support for this may be added later.

Note: document-level extensions will only be transferred from the first document passed in. If you need to merge extensions from all the concatenated documents, you may have to merge these manually on the XML level, for example using XSLT.

Constructor Summary

IFConcatenator(IFDocumentHandler targetHandler, org.apache.xmlgraphics.xmp.Metadata metadata)
Creates a new IF concatenator.

Method Summary

void	appendDocument(javax.xml.transform.Source src) Appends another intermediate format document to the current output file.
void	finish() Properly finishes the current output file by creating an empty document trailer and calling IFDocumentHandler.endDocument().
protected IFDocumentHandler	getTargetHandler() Returns the target document handler.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IFConcatenator

public IFConcatenator(IFDocumentHandler targetHandler,
                      org.apache.xmlgraphics.xmp.Metadata metadata)
               throws IFException

Creates a new IF concatenator.

Parameters:

targetHandler - the target document handler

metadata - the metadata object for the generated file (may be null)

Throws:

IFException - if an IF-related error occurs

Method Detail

getTargetHandler

protected IFDocumentHandler getTargetHandler()

Returns the target document handler.

Returns:

the target document handler

finish

public void finish()
            throws IFException

Properly finishes the current output file by creating an empty document trailer and calling IFDocumentHandler.endDocument().

Throws:

IFException - if an IF-related error occurs

appendDocument

public void appendDocument(javax.xml.transform.Source src)
                    throws javax.xml.transform.TransformerException,
                           IFException

Appends another intermediate format document to the current output file. All document-level content (i.e. the document header and trailer) is ignored. This method shall not be called after finish() has been called.

Parameters:

src - the JAXP Source identifying the input document

Throws:

javax.xml.transform.TransformerException - if an XML-related exception occurs during

IFException - if an IF-related error occurs