XMLObjectReader.java

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/*
 * Javolution - Java(TM) Solution for Real-Time and Embedded Systems
 * Copyright (C) 2012 - Javolution (http://javolution.org/)
 * All rights reserved.
 * 
 * Permission to use, copy, modify, and distribute this software is
 * freely granted, provided that this notice is preserved.
 */
package javolution.xml;
 
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
 
import javolution.xml.internal.stream.XMLStreamReaderImpl;
import javolution.xml.stream.XMLStreamException;
import javolution.xml.stream.XMLStreamReader;
 
public class XMLObjectReader {
 
    private final XMLFormat.InputElement _xml = new XMLFormat.InputElement();
 
    private Reader _reader;
 
    private InputStream _inputStream;
 
    public static XMLObjectReader newInstance(InputStream in)
            throws XMLStreamException {
        XMLObjectReader reader = new XMLObjectReader();
        reader.setInput(in);
        return reader;
    }
 
    public static XMLObjectReader newInstance(InputStream in, String encoding)
            throws XMLStreamException {
        XMLObjectReader reader = new XMLObjectReader();
        reader.setInput(in, encoding);
        return reader;
    }
 
    public static XMLObjectReader newInstance(Reader in)
            throws XMLStreamException {
        XMLObjectReader reader = new XMLObjectReader();
        reader.setInput(in);
        return reader;
    }
 
    public XMLObjectReader() {}
 
    public XMLStreamReader getStreamReader() {
        return _xml._reader;
    }
 
    public XMLObjectReader setInput(InputStream in) throws XMLStreamException {
        if ((_inputStream != null) || (_reader != null))
            throw new IllegalStateException("Reader not closed or reset");
        _xml._reader.setInput(in);
        _inputStream = in;
        return this;
    }
 
    public XMLObjectReader setInput(InputStream in, String encoding)
            throws XMLStreamException {
        if ((_inputStream != null) || (_reader != null))
            throw new IllegalStateException("Reader not closed or reset");
        _xml._reader.setInput(in, encoding);
        _inputStream = in;
        return this;
    }
 
    public XMLObjectReader setInput(Reader in) throws XMLStreamException {
        if ((_inputStream != null) || (_reader != null))
            throw new IllegalStateException("Reader not closed or reset");
        _xml._reader.setInput(in);
        _reader = in;
        return this;
    }
 
    public XMLObjectReader setBinding(XMLBinding binding) {
        _xml.setBinding(binding);
        return this;
    }
 
    public XMLObjectReader setReferenceResolver(
            XMLReferenceResolver referenceResolver) {
        _xml.setReferenceResolver(referenceResolver);
        return this;
    }
 
    public boolean hasNext() throws XMLStreamException {
        return _xml.hasNext();
    }
 
    @SuppressWarnings("unchecked")
    public <T> T read() throws XMLStreamException {
        return (T) _xml.getNext();
    }
 
    @SuppressWarnings("unchecked")
    public <T> T read(String name) throws XMLStreamException {
        return (T) _xml.get(name);
    }
 
    @SuppressWarnings("unchecked")
    public <T> T read(String localName, String uri) throws XMLStreamException {
        return (T) _xml.get(localName, uri);
    }
 
    public <T> T read(String name, Class<T> cls) throws XMLStreamException {
        return _xml.get(name, cls);
    }
 
    public <T> T read(String localName, String uri, Class<T> cls)
            throws XMLStreamException {
        return _xml.get(localName, uri, cls);
    }
 
    public void close() throws XMLStreamException {
        try {
            if (_inputStream != null) {
                _inputStream.close();
                reset();
            } else if (_reader != null) {
                _reader.close();
                reset();
            }
        } catch (IOException e) {
            throw new XMLStreamException(e);
        }
    }
 
    public void reset() {
        _xml.reset();
        _reader = null;
        _inputStream = null;
    }
}