FastInfosetStreamReaderFactory.java

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package com.sun.xml.ws.encoding.fastinfoset;

import com.sun.xml.fastinfoset.stax.StAXDocumentParser;
import com.sun.xml.ws.api.streaming.XMLStreamReaderFactory;
import java.io.InputStream;
import java.io.Reader;
import javax.xml.stream.XMLStreamReader;

/**
 * @author Alexey Stashok
 */
public final class FastInfosetStreamReaderFactory extends XMLStreamReaderFactory {
    private static final FastInfosetStreamReaderFactory factory = new FastInfosetStreamReaderFactory();
    
    private ThreadLocal<StAXDocumentParser> pool = new ThreadLocal<StAXDocumentParser>();
    
    public static FastInfosetStreamReaderFactory getInstance() {
        return factory;
    }
    
    public XMLStreamReader doCreate(String systemId, InputStream in, boolean rejectDTDs) {
        StAXDocumentParser parser = fetch();
        if (parser == null) {
            return FastInfosetCodec.createNewStreamReaderRecyclable(in, false);
        }
        
        parser.setInputStream(in);
        return parser;
    }
    
    public XMLStreamReader doCreate(String systemId, Reader reader, boolean rejectDTDs) {
        throw new UnsupportedOperationException();
    }
    
    private StAXDocumentParser fetch() {
        StAXDocumentParser parser = pool.get();
        pool.set(null);
        return parser;
    }
    
    public void doRecycle(XMLStreamReader r) {
        if (r instanceof StAXDocumentParser) {
            pool.set((StAXDocumentParser) r);
        }
    }
}