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|
// **********************************************************************
//
// Copyright (c) 2001
// Mutable Realms, Inc.
// Huntsville, AL, USA
//
// All Rights Reserved
//
// **********************************************************************
package IceInternal;
public class Incoming
{
public
Incoming(Instance instance, Ice.ObjectAdapter adapter)
{
_is = new BasicStream(instance);
_os = new BasicStream(instance);
_current = new Ice.Current();
_current.adapter = adapter;
_current.id = new Ice.Identity();
_cookie = new Ice.LocalObjectHolder();
if(_current.adapter != null)
{
((Ice.ObjectAdapterI)(_current.adapter)).incUsageCount();
}
}
//
// This function allows this object to be reused, rather than
// reallocated.
//
public void
reset(Ice.ObjectAdapter adapter)
{
_is.reset();
_os.reset();
if(_current.ctx != null)
{
_current.ctx.clear();
}
if(_current.adapter != adapter)
{
if(_current.adapter != null)
{
((Ice.ObjectAdapterI)(_current.adapter)).decUsageCount();
}
_current.adapter = adapter;
if(_current.adapter != null)
{
((Ice.ObjectAdapterI)(_current.adapter)).incUsageCount();
}
}
}
//
// Reclaim resources.
//
public void
destroy()
{
_is.destroy();
_os.destroy();
if(_current.adapter != null)
{
((Ice.ObjectAdapterI)(_current.adapter)).decUsageCount();
}
}
public void
invoke(boolean response)
{
//
// Read the current.
//
_current.id.__read(_is);
_current.facet = _is.readStringSeq();
_current.operation = _is.readString();
_current.mode = Ice.OperationMode.convert(_is.readByte());
int sz = _is.readSize();
while(sz-- > 0)
{
String first = _is.readString();
String second = _is.readString();
if(_current.ctx == null)
{
_current.ctx = new java.util.HashMap();
}
_current.ctx.put(first, second);
}
_is.startReadEncaps();
int statusPos;
if(response)
{
statusPos = _os.size();
_os.writeByte((byte)0);
_os.startWriteEncaps();
}
else
{
statusPos = 0; // Initialize, to keep the compiler happy.
}
Ice.Object servant = null;
Ice.ServantLocator locator = null;
_cookie.value = null;
DispatchStatus status;
//
// Don't put the code above into the try block below. Exceptions
// in the code above are considered fatal, and must propagate to
// the caller of this operation.
//
try
{
if(_current.adapter != null)
{
servant = _current.adapter.identityToServant(_current.id);
if(servant == null && _current.id.category.length() > 0)
{
locator = _current.adapter.findServantLocator(_current.id.category);
if(locator != null)
{
servant = locator.locate(_current, _cookie);
}
}
if(servant == null)
{
locator = _current.adapter.findServantLocator("");
if(locator != null)
{
servant = locator.locate(_current, _cookie);
}
}
}
if(servant == null)
{
status = DispatchStatus.DispatchObjectNotExist;
}
else
{
if(_current.facet.length > 0)
{
Ice.Object facetServant = servant.ice_findFacetPath(_current.facet, 0);
if(facetServant == null)
{
status = DispatchStatus.DispatchFacetNotExist;
}
else
{
status = facetServant.__dispatch(this, _current);
}
}
else
{
status = servant.__dispatch(this, _current);
}
}
}
catch(Ice.LocationForward ex)
{
if(locator != null && servant != null)
{
locator.finished(_current, servant, _cookie.value);
}
_is.endReadEncaps();
if(response)
{
_os.endWriteEncaps();
_os.resize(statusPos, false);
_os.writeByte((byte)DispatchStatus._DispatchLocationForward);
_os.writeProxy(ex._prx);
}
return;
}
catch(Ice.RequestFailedException ex)
{
if(locator != null && servant != null)
{
locator.finished(_current, servant, _cookie.value);
}
_is.endReadEncaps();
if(response)
{
_os.endWriteEncaps();
_os.resize(statusPos, false);
if(ex instanceof Ice.ObjectNotExistException)
{
_os.writeByte((byte)DispatchStatus._DispatchObjectNotExist);
}
else if(ex instanceof Ice.FacetNotExistException)
{
_os.writeByte((byte)DispatchStatus._DispatchFacetNotExist);
}
else if(ex instanceof Ice.OperationNotExistException)
{
_os.writeByte((byte)DispatchStatus._DispatchOperationNotExist);
}
else
{
assert(false);
}
// Write the data from the exception, not from _current,
// so that a RequestFailedException can override the
// information from _current.
ex.id.__write(_os);
_os.writeStringSeq(ex.facet);
_os.writeString(ex.operation);
}
return;
}
catch(Ice.LocalException ex)
{
if(locator != null && servant != null)
{
locator.finished(_current, servant, _cookie.value);
}
_is.endReadEncaps();
if(response)
{
_os.endWriteEncaps();
_os.resize(statusPos, false);
_os.writeByte((byte)DispatchStatus._DispatchUnknownLocalException);
_os.writeString(ex.toString());
}
return;
}
/* Not possible in Java - UserExceptions are checked exceptions
catch(Ice.UserException ex)
{
// ...
}
*/
catch(RuntimeException ex)
{
if(locator != null && servant != null)
{
locator.finished(_current, servant, _cookie.value);
}
_is.endReadEncaps();
if(response)
{
_os.endWriteEncaps();
_os.resize(statusPos, false);
_os.writeByte((byte)DispatchStatus._DispatchUnknownException);
_os.writeString(ex.toString());
}
return;
}
if(locator != null && servant != null)
{
locator.finished(_current, servant, _cookie.value);
}
_is.endReadEncaps();
if(response)
{
_os.endWriteEncaps();
if(status != DispatchStatus.DispatchOK && status != DispatchStatus.DispatchUserException)
{
assert(status == DispatchStatus.DispatchObjectNotExist ||
status == DispatchStatus.DispatchFacetNotExist ||
status == DispatchStatus.DispatchOperationNotExist);
_os.resize(statusPos, false);
_os.writeByte((byte)status.value());
_current.id.__write(_os);
_os.writeStringSeq(_current.facet);
_os.writeString(_current.operation);
}
else
{
int save = _os.pos();
_os.pos(statusPos);
_os.writeByte((byte)status.value());
_os.pos(save);
}
}
}
public BasicStream
is()
{
return _is;
}
public BasicStream
os()
{
return _os;
}
private BasicStream _is;
private BasicStream _os;
private Ice.Current _current;
private Ice.LocalObjectHolder _cookie;
Incoming next; // For use by Connection
}
|
