/** Replaces a reference from one object to another. */
public boolean replaceRef(Object oldRef, Object newRef) throws IOException {
Integer value = (Integer) _refs.remove(oldRef);
if (value != null) {
_refs.put(newRef, value);
return true;
} else return false;
}
/**
* If the object has already been written, just write its ref.
*
* @return true if we're writing a ref.
*/
public boolean addRef(Object object) throws IOException {
int ref = _refs.get(object);
if (ref >= 0) {
writeRef(ref);
return true;
} else {
_refs.put(object, _refs.size());
return false;
}
}
/** Removes a reference. */
public boolean removeRef(Object obj) throws IOException {
if (_refs != null) {
_refs.remove(obj);
return true;
} else return false;
}
/**
* Starts a streaming packet
*
* <p>A streaming message starts with 'P'
*
* <pre>
* P x02 x00
* </pre>
*/
public void startStreamingPacket() throws IOException {
if (_refs != null) _refs.clear();
flush();
_isStreaming = true;
_offset = 3;
}
/**
* Writes a fault. The fault will be written as a descriptive string followed by an object: <code>
* <pre>
* F map
* </pre></code> <code><pre>
* F H
* \x04code
* \x10the fault code
*
* \x07message
* \x11the fault message
*
* \x06detail
* M\xnnjavax.ejb.FinderException
* ...
* Z
* Z
* </pre></code>
*
* @param code the fault code, a three digit
*/
public void writeFault(String code, String message, Object detail) throws IOException {
flushIfFull();
writeVersion();
_buffer[_offset++] = (byte) 'F';
_buffer[_offset++] = (byte) 'H';
_refs.put(new HashMap(), _refs.size());
writeString("code");
writeString(code);
writeString("message");
writeString(message);
if (detail != null) {
writeString("detail");
writeObject(detail);
}
flushIfFull();
_buffer[_offset++] = (byte) 'Z';
}
/** Resets the references for streaming. */
public void resetReferences() {
if (_refs != null) _refs.clear();
}