import com.sun.istack.internal.XMLStreamReaderToContentHandler; //导入依赖的package包/类
/**
 * Creates a new {@link javax.xml.transform.Source} for the given
 * {@link XMLStreamReader}.
 *
 * The XMLStreamReader must be pointing at either a
 * {@link javax.xml.stream.XMLStreamConstants#START_DOCUMENT} or
 * {@link javax.xml.stream.XMLStreamConstants#START_ELEMENT} event.
 *
 * @param reader XMLStreamReader that will be exposed as a Source
 * @param eagerQuit if true, when the conversion is completed, leave the cursor to the last
 *                  event that was fired (such as end element)
 * @param inscope inscope Namespaces
 *                array of the even length of the form { prefix0, uri0, prefix1, uri1, ... }
 * @throws IllegalArgumentException iff the reader is null
 * @throws IllegalStateException iff the reader is not pointing at either a
 * START_DOCUMENT or START_ELEMENT event
 */
public StAXSource(XMLStreamReader reader, boolean eagerQuit, @NotNull String[] inscope) {
    if( reader == null )
        throw new IllegalArgumentException();
    this.staxReader = reader;

    int eventType = reader.getEventType();
    if (!(eventType == XMLStreamConstants.START_DOCUMENT)
        && !(eventType == XMLStreamConstants.START_ELEMENT)) {
        throw new IllegalStateException();
    }

    this.reader = new XMLStreamReaderToContentHandler(reader,repeater,eagerQuit,false,inscope);

    super.setXMLReader(pseudoParser);
    // pass a dummy InputSource. We don't care
    super.setInputSource(new InputSource());
}
 

import com.sun.istack.internal.XMLStreamReaderToContentHandler; //导入依赖的package包/类
public Document parse( String systemId, XMLStreamReader parser, boolean root ) throws XMLStreamException {
    Document dom = documentBuilder.newDocument();

    systemId = Options.normalizeSystemId(systemId);

    if(root)
        rootDocuments.add(systemId);

    if(systemId==null)
        throw new IllegalArgumentException("system id cannot be null");
    core.put( systemId, dom );

    new XMLStreamReaderToContentHandler(parser,getParserHandler(dom),false,false).bridge();

    return dom;
}
 

import com.sun.istack.internal.XMLStreamReaderToContentHandler; //导入依赖的package包/类
public Document parse( String systemId, XMLStreamReader parser, boolean root ) throws XMLStreamException {
    Document dom = documentBuilder.newDocument();

    systemId = normalizeSystemId(systemId);

    if(root)
        rootDocuments.add(systemId);

    if(systemId==null)
        throw new IllegalArgumentException("system id cannot be null");
    core.put( systemId, dom );

    new XMLStreamReaderToContentHandler(parser,getParserHandler(dom),false,false).bridge();

    return dom;
}