diff options
Diffstat (limited to 'gentools/templ.java/MethodRegistryClass.tmpl')
-rw-r--r-- | gentools/templ.java/MethodRegistryClass.tmpl | 74 |
1 files changed, 59 insertions, 15 deletions
diff --git a/gentools/templ.java/MethodRegistryClass.tmpl b/gentools/templ.java/MethodRegistryClass.tmpl index d68ea28056..0f15918f90 100644 --- a/gentools/templ.java/MethodRegistryClass.tmpl +++ b/gentools/templ.java/MethodRegistryClass.tmpl @@ -1,19 +1,22 @@ &{MainRegistry.java} /* * - * Copyright (c) 2006 The Apache Software Foundation - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. * */ @@ -25,12 +28,53 @@ package org.apache.qpid.framing; -import java.util.Map; +import java.util.HashMap; +import java.lang.reflect.Constructor; +import org.apache.log4j.Logger; class MainRegistry { - static void register(Map map, byte major, byte minor) + private static final Logger _log = Logger.getLogger(MainRegistry.class); + private static HashMap<Long, Class> classIDMethodIDVersionBodyMap = new HashMap<Long, Class>(); + + static { %{CLIST} ${reg_map_put_method} } + + public static AMQMethodBody get(short classID, short methodID, byte major, byte minor) + throws AMQFrameDecodingException + { + Class bodyClass = classIDMethodIDVersionBodyMap.get( + createMapKey(classID, methodID, major, minor)); + if (bodyClass == null) + { + throw new AMQFrameDecodingException(_log, + "Unable to find a suitable decoder for class " + classID + " and method " + + methodID + " in AMQP version " + major + "-" + minor + "."); + } + try + { + Constructor initFn = bodyClass.getConstructor(byte.class, byte.class); + return (AMQMethodBody) initFn.newInstance(major, minor); + } + catch (Exception e) + { + throw new AMQFrameDecodingException(_log, + "Unable to instantiate body class for class " + classID + " and method " + + methodID + " in AMQP version " + major + "-" + minor + " : " + e, e); + } + } + + private static Long createMapKey(short classID, short methodID, byte major, byte minor) + { + /** + * Mapping of 4 components into a guaranteed unique key: + * MSB LSB + * +----+----+----+----+----+----+-----+-----+ + * | 0 | classID |methodID |major|minor| + * +----+----+----+----+----+----+-----+-----+ + */ + return new Long(((long)classID << 32) + ((long)methodID << 16) + ((long)major << 8) + minor); + } } |