| /* |
| * Copyright (c) 2000, 2004, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.corba.se.impl.encoding; |
| |
| import com.sun.corba.se.impl.encoding.BufferManagerRead; |
| import com.sun.corba.se.impl.encoding.BufferManagerReadGrow; |
| import com.sun.corba.se.impl.encoding.BufferManagerReadStream; |
| import com.sun.corba.se.impl.encoding.BufferManagerWrite; |
| import com.sun.corba.se.impl.protocol.giopmsgheaders.Message; |
| import com.sun.corba.se.impl.logging.ORBUtilSystemException; |
| import com.sun.corba.se.spi.logging.CORBALogDomains; |
| import com.sun.corba.se.spi.ior.iiop.GIOPVersion; |
| import com.sun.corba.se.spi.orb.ORB; |
| |
| import org.omg.CORBA.INTERNAL; |
| |
| /** |
| * 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)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)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); |
| } |
| } |