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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
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*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
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package org.jboss.com.sun.corba.se.impl.encoding;
import org.omg.CORBA.INTERNAL;
import org.jboss.com.sun.corba.se.impl.encoding.BufferManagerRead;
import org.jboss.com.sun.corba.se.impl.encoding.BufferManagerReadGrow;
import org.jboss.com.sun.corba.se.impl.encoding.BufferManagerReadStream;
import org.jboss.com.sun.corba.se.impl.encoding.BufferManagerWrite;
import org.jboss.com.sun.corba.se.impl.encoding.BufferManagerWriteCollect;
import org.jboss.com.sun.corba.se.impl.encoding.BufferManagerWriteGrow;
import org.jboss.com.sun.corba.se.impl.encoding.BufferManagerWriteStream;
import org.jboss.com.sun.corba.se.impl.logging.ORBUtilSystemException;
import org.jboss.com.sun.corba.se.impl.protocol.giopmsgheaders.Message;
import org.jboss.com.sun.corba.se.spi.ior.iiop.GIOPVersion;
import org.jboss.com.sun.corba.se.spi.logging.CORBALogDomains;
import org.jboss.com.sun.corba.se.spi.orb.ORB;
/**
* Creates read/write buffer managers to handle over/under flow in CDR*putStream.
*/
public class BufferManagerFactory
{
public static final int GROW = 0;
public static final int COLLECT = 1;
public static final int STREAM = 2;
// The next two methods allow creation of BufferManagers based on GIOP version.
// We may want more criteria to be involved in this decision.
// These are only used for sending messages (so could be fragmenting)
public static BufferManagerRead newBufferManagerRead(GIOPVersion version, byte encodingVersion, ORB orb)
{
// REVISIT - On the reading side, shouldn't we monitor the incoming
// fragments on a given connection to determine what fragment size
// they're using, then use that ourselves?
if (encodingVersion != Message.CDR_ENC_VERSION)
{
return new BufferManagerReadGrow(orb);
}
switch (version.intValue())
{
case GIOPVersion.VERSION_1_0 :
return new BufferManagerReadGrow(orb);
case GIOPVersion.VERSION_1_1 :
case GIOPVersion.VERSION_1_2 :
// The stream reader can handle fragmented and
// non fragmented messages
return new BufferManagerReadStream(orb);
default :
// REVISIT - what is appropriate?
throw new INTERNAL("Unknown GIOP version: " + version);
}
}
public static BufferManagerRead newBufferManagerRead(int strategy, byte encodingVersion, ORB orb)
{
if (encodingVersion != Message.CDR_ENC_VERSION)
{
if (strategy != BufferManagerFactory.GROW)
{
ORBUtilSystemException wrapper = ORBUtilSystemException.get(orb, CORBALogDomains.RPC_ENCODING);
throw wrapper.invalidBuffMgrStrategy("newBufferManagerRead");
}
return new BufferManagerReadGrow(orb);
}
switch (strategy)
{
case BufferManagerFactory.GROW :
return new BufferManagerReadGrow(orb);
case BufferManagerFactory.COLLECT :
throw new INTERNAL("Collect strategy invalid for reading");
case BufferManagerFactory.STREAM :
return new BufferManagerReadStream(orb);
default :
throw new INTERNAL("Unknown buffer manager read strategy: " + strategy);
}
}
public static BufferManagerWrite newBufferManagerWrite(int strategy, byte encodingVersion, ORB orb)
{
if (encodingVersion != Message.CDR_ENC_VERSION)
{
if (strategy != BufferManagerFactory.GROW)
{
ORBUtilSystemException wrapper = ORBUtilSystemException.get(orb, CORBALogDomains.RPC_ENCODING);
throw wrapper.invalidBuffMgrStrategy("newBufferManagerWrite");
}
return new BufferManagerWriteGrow(orb);
}
switch (strategy)
{
case BufferManagerFactory.GROW :
return new BufferManagerWriteGrow(orb);
case BufferManagerFactory.COLLECT :
return new BufferManagerWriteCollect(orb);
case BufferManagerFactory.STREAM :
return new BufferManagerWriteStream(orb);
default :
throw new INTERNAL("Unknown buffer manager write strategy: " + strategy);
}
}
public static BufferManagerWrite newBufferManagerWrite(GIOPVersion version, byte encodingVersion, ORB orb)
{
if (encodingVersion != Message.CDR_ENC_VERSION)
{
return new BufferManagerWriteGrow(orb);
}
return BufferManagerFactory.newBufferManagerWrite(orb.getORBData().getGIOPBuffMgrStrategy(version),
encodingVersion, orb);
}
public static BufferManagerRead defaultBufferManagerRead(ORB orb)
{
return new BufferManagerReadGrow(orb);
}
}