Hi,
this is about a problem with an embedded ElementHandler added to a SAXReader
called in a main ElementHandler.
I have a project in which I want to construct a DOM from a main XML file
that contains <import name="href"/> tags for component files. To do this I
added an ElementHandler to the SAXReader that reads the main file. This
MainHandler calls another SAXReader to read component files. The <import
.../> elements are to be replaced by the component root elements.
Since I have to do some modification of the component DOMs, I added another
ElementHandler (ComponentHandler) to the component SAXReader.
My problem occurs with the handler of the component reader: although the
reader processes all imports, its handler seems to be lost after processing
of the first <import .../>.
The very ugly workaround for the time being is to get a new SAXReader with
added componentHandler on each call of MainHandler.onEnd().
Did anyone encounter this or a similar problem. Any help or suggestions are
greatly appreciated.
Best,
Franz
-------------
This code skeleton illustrates the problem: only the /file/content elements
of the first imported file are handled (i.e. printed) although the resulting
DOM contains all imports. With the commented lines replacing their
respective counterparts, all /file/content elements will be printed.
public class MainHandler implements ElementHandler {
SAXReader myReader;
public MainHandler() {
this.myReader = new SAXReader();
mainReader.addHandler("/file/content", new ComponentHandler());
}
public void onStart(ElementPath path) {}
public void onEnd(ElementPath path) {
String href = path.getCurrent().attribute("href").getValue();
Element importRef = path.getCurrent();
Element parentElement = curr.getParent();
// SAXReader onEndReader = new SAXReader();
// onEndReader.addHandler("/file/content", new ComponentHandler());
File file = new File(href);
try {
Element importElement = myReader.read(file).getRootElement();
// Element importElement =
onEndReader.read(file).getRootElement();
} catch {}
// prune and replace
importRef.detach();
parentElement.add(importElement);
}
}
public class ComponentHandler implements ElementHandler {
public void onStart(ElementPath path) {
System.out.println(path.getCurrent().attribute("name").getValue());
}
public void onEnd(ElementPath path) {}
}
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