Source Code Cross Referenced for PooledMarshalledInvocation.java in  » EJB-Server-JBoss-4.2.1 » server » org » jboss » invocation » pooled » interfaces » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » EJB Server JBoss 4.2.1 » server » org.jboss.invocation.pooled.interfaces 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * JBoss, Home of Professional Open Source.
003:         * Copyright 2006, Red Hat Middleware LLC, and individual contributors
004:         * as indicated by the @author tags. See the copyright.txt file in the
005:         * distribution for a full listing of individual contributors.
006:         *
007:         * This is free software; you can redistribute it and/or modify it
008:         * under the terms of the GNU Lesser General Public License as
009:         * published by the Free Software Foundation; either version 2.1 of
010:         * the License, or (at your option) any later version.
011:         *
012:         * This software is distributed in the hope that it will be useful,
013:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
014:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015:         * Lesser General Public License for more details.
016:         *
017:         * You should have received a copy of the GNU Lesser General Public
018:         * License along with this software; if not, write to the Free
019:         * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020:         * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
021:         */
022:        package org.jboss.invocation.pooled.interfaces;
023:
024:        import org.jboss.invocation.Invocation;
025:        import org.jboss.invocation.InvocationType;
026:        import org.jboss.invocation.MarshalledInvocation;
027:        import org.jboss.invocation.MarshalledValue;
028:
029:        import javax.transaction.Transaction;
030:        import java.io.IOException;
031:        import java.lang.reflect.Method;
032:        import java.security.Principal;
033:        import java.util.HashMap;
034:        import java.util.Iterator;
035:
036:        /**
037:         * The MarshalledInvocation is an invocation that travels.  As such it
038:         * serializes its payload because of lack of ClassLoader visibility. As such it
039:         * contains Marshalled data representing the byte[] of the Invocation object it
040:         * extends Besides handling the specifics of "marshalling" the payload, which
041:         * could be done at the Invocation level the Marshalled Invocation can hold
042:         * optimization and needed code for distribution for example the
043:         * TransactionPropagationContext which is a serialization of the TX for
044:         * distribution purposes as well as the "hash" for the methods that we send, as
045:         * opposed to sending Method objects. Serialization "optimizations" should be
046:         * coded here in the externalization implementation of the class
047:         * 
048:         * @author <a href="mailto:marc@jboss.org">Marc Fleury</a>
049:         * @version $Revision: 57209 $
050:         */
051:        public class PooledMarshalledInvocation extends MarshalledInvocation
052:                implements  java.io.Externalizable {
053:            // Constants -----------------------------------------------------
054:
055:            /**
056:             * Serial Version Identifier.
057:             */
058:            static final long serialVersionUID = -728630295444149842L;
059:
060:            private transient Transaction tx;
061:            private transient Object credential;
062:            private transient Principal principal;
063:            private transient Object enterpriseContext;
064:            private transient Object id;
065:            private transient PooledMarshalledValue pooledMarshalledArgs;
066:
067:            // Constructors --------------------------------------------------
068:            public PooledMarshalledInvocation() {
069:                // For externalization to work
070:            }
071:
072:            public PooledMarshalledInvocation(Invocation invocation) {
073:                this .payload = invocation.payload;
074:                this .as_is_payload = invocation.as_is_payload;
075:                this .method = invocation.getMethod();
076:                this .objectName = invocation.getObjectName();
077:                this .args = invocation.getArguments();
078:                this .invocationType = invocation.getType();
079:            }
080:
081:            public PooledMarshalledInvocation(Object id, Method m,
082:                    Object[] args, Transaction tx, Principal identity,
083:                    Object credential) {
084:                super (id, m, args, tx, identity, credential);
085:            }
086:
087:            // Public --------------------------------------------------------
088:
089:            public Object getEnterpriseContext() {
090:                return enterpriseContext;
091:            }
092:
093:            public void setEnterpriseContext(Object enterpriseContext) {
094:                this .enterpriseContext = enterpriseContext;
095:            }
096:
097:            public Object getId() {
098:                if (id == null)
099:                    id = super .getId();
100:                return id;
101:            }
102:
103:            public void setId(Object id) {
104:                super .setId(id);
105:                this .id = id;
106:            }
107:
108:            public void setTransaction(Transaction tx) {
109:                super .setTransaction(tx);
110:                this .tx = tx;
111:            }
112:
113:            public Transaction getTransaction() {
114:                if (tx == null)
115:                    tx = super .getTransaction();
116:                return this .tx;
117:            }
118:
119:            public Object getCredential() {
120:                if (credential == null)
121:                    credential = super .getCredential();
122:                return credential;
123:            }
124:
125:            public void setCredential(Object credential) {
126:                super .setCredential(credential);
127:                this .credential = credential;
128:            }
129:
130:            public Principal getPrincipal() {
131:                if (principal == null)
132:                    principal = super .getPrincipal();
133:                return principal;
134:            }
135:
136:            public void setPrincipal(Principal principal) {
137:                super .setPrincipal(principal);
138:                this .principal = principal;
139:            }
140:
141:            public Object[] getArguments() {
142:                if (this .args == null) {
143:                    try {
144:                        this .args = (Object[]) pooledMarshalledArgs.get();
145:                    } catch (Exception e) {
146:                        e.printStackTrace();
147:                    }
148:                }
149:                return args;
150:            }
151:
152:            // Externalizable implementation ---------------------------------
153:            public void writeExternal(java.io.ObjectOutput out)
154:                    throws IOException {
155:                out.writeObject(invocationType);
156:                // FIXME marcf: the "specific" treatment of Transactions should be abstracted.
157:                // Write the TPC, not the local transaction
158:                out.writeObject(tpc);
159:
160:                long methodHash = calculateHash(this .method);
161:                out.writeLong(methodHash);
162:
163:                out.writeInt(((Integer) this .objectName).intValue());
164:                out.writeObject(new PooledMarshalledValue(this .args));
165:
166:                // Write out payload hashmap
167:                // Don't use hashmap serialization to avoid not-needed data being
168:                // marshalled
169:                // The map contains only serialized representations of every other object
170:                // Everything else is possibly tied to classloaders that exist inside the
171:                // server but not in the generic JMX land. they will travel in the  payload
172:                // as MarshalledValue objects, see the Invocation getter logic
173:                //
174:                if (payload == null)
175:                    out.writeInt(0);
176:                else {
177:                    out.writeInt(payload.size());
178:                    Iterator keys = payload.keySet().iterator();
179:                    while (keys.hasNext()) {
180:                        Object currentKey = keys.next();
181:
182:                        // This code could be if (object.getClass().getName().startsWith("java")) then don't serialize.
183:                        // Bench the above for speed.
184:
185:                        out.writeObject(currentKey);
186:                        out.writeObject(new MarshalledValue(payload
187:                                .get(currentKey)));
188:                    }
189:                }
190:
191:                // This map is "safe" as is
192:                //out.writeObject(as_is_payload);
193:                if (as_is_payload == null)
194:                    out.writeInt(0);
195:                else {
196:                    out.writeInt(as_is_payload.size());
197:
198:                    Iterator keys = as_is_payload.keySet().iterator();
199:                    while (keys.hasNext()) {
200:                        Object currentKey = keys.next();
201:                        out.writeObject(currentKey);
202:                        out.writeObject(as_is_payload.get(currentKey));
203:                    }
204:                }
205:            }
206:
207:            public void readExternal(java.io.ObjectInput in)
208:                    throws IOException, ClassNotFoundException {
209:                invocationType = (InvocationType) in.readObject();
210:                tpc = in.readObject();
211:                this .methodHash = in.readLong();
212:
213:                this .objectName = new Integer(in.readInt());
214:
215:                pooledMarshalledArgs = (PooledMarshalledValue) in.readObject();
216:
217:                int payloadSize = in.readInt();
218:                if (payloadSize > 0) {
219:                    payload = new HashMap();
220:                    for (int i = 0; i < payloadSize; i++) {
221:                        Object key = in.readObject();
222:                        Object value = in.readObject();
223:                        payload.put(key, value);
224:                    }
225:                }
226:
227:                int as_is_payloadSize = in.readInt();
228:                if (as_is_payloadSize > 0) {
229:                    as_is_payload = new HashMap();
230:                    for (int i = 0; i < as_is_payloadSize; i++) {
231:                        Object key = in.readObject();
232:                        Object value = in.readObject();
233:                        as_is_payload.put(key, value);
234:                    }
235:                }
236:            }
237:        }
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