Source Code Cross Referenced for EventChannelFactoryImpl.java in  » Collaboration » JacORB » org » jacorb » notification » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Collaboration » JacORB » org.jacorb.notification 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package org.jacorb.notification;
002:
003:        /*
004:         *        JacORB - a free Java ORB
005:         *
006:         *   Copyright (C) 1999-2004 Gerald Brose
007:         *
008:         *   This library is free software; you can redistribute it and/or
009:         *   modify it under the terms of the GNU Library General Public
010:         *   License as published by the Free Software Foundation; either
011:         *   version 2 of the License, or (at your option) any later version.
012:         *
013:         *   This library is distributed in the hope that it will be useful,
014:         *   but WITHOUT ANY WARRANTY; without even the implied warranty of
015:         *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
016:         *   Library General Public License for more details.
017:         *
018:         *   You should have received a copy of the GNU Library General Public
019:         *   License along with this library; if not, write to the Free
020:         *   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
021:         *
022:         */
023:
024:        import org.jacorb.notification.conf.Attributes;
025:        import org.jacorb.notification.conf.Default;
026:        import org.jacorb.notification.container.CORBAObjectComponentAdapter;
027:        import org.omg.CORBA.IntHolder;
028:        import org.omg.CORBA.ORB;
029:        import org.omg.CORBA.UserException;
030:        import org.omg.CosNotification.Property;
031:        import org.omg.CosNotification.UnsupportedAdmin;
032:        import org.omg.CosNotification.UnsupportedQoS;
033:        import org.omg.CosNotifyChannelAdmin.ChannelNotFound;
034:        import org.omg.CosNotifyChannelAdmin.EventChannel;
035:        import org.omg.CosNotifyChannelAdmin.EventChannelFactory;
036:        import org.omg.CosNotifyChannelAdmin.EventChannelFactoryHelper;
037:        import org.omg.CosNotifyChannelAdmin.EventChannelHelper;
038:        import org.omg.PortableServer.Servant;
039:        import org.picocontainer.MutablePicoContainer;
040:
041:        /**
042:         * <code>EventChannelFactoryImpl</code> is a implementation of the
043:         * <code>EventChannelFactory</code> interface which defines operations for creating and managing
044:         * new Notification Service style event channels. It supports a routine that creates new instances
045:         * of Notification Service event channels and assigns unique numeric identifiers to them. In
046:         * addition the <code>EventChannelFactory</code> interface supports a routing, which can return
047:         * the unique identifiers assigned to all event channels created by a given instance of
048:         * <code>EventChannelFactory</code>, and another routine which, given the unique identifier of an
049:         * event channel created by a target <code>EventChannelFactory</code> instance, returns the object
050:         * reference of that event channel. <br>
051:         *
052:         * @author Alphonse Bendt
053:         * @version $Id: EventChannelFactoryImpl.java,v 1.45 2006/05/23 10:40:35 alphonse.bendt Exp $
054:         */
055:
056:        public class EventChannelFactoryImpl extends AbstractChannelFactory
057:                implements  JacORBEventChannelFactoryOperations {
058:            // //////////////////////////////////////
059:
060:            protected String getShortcut() {
061:                return "NotificationService";
062:            }
063:
064:            protected String getObjectName() {
065:                return "_ECFactory";
066:            }
067:
068:            // //////////////////////////////////////
069:
070:            public EventChannelFactoryImpl(MutablePicoContainer container,
071:                    ORB orb) throws UserException {
072:                super (container, orb);
073:
074:                container_.registerComponent(new CORBAObjectComponentAdapter(
075:                        EventChannelFactory.class, EventChannelFactoryHelper
076:                                .narrow(this Ref_)));
077:            }
078:
079:            /**
080:             * The <code>create_channel</code> operation is invoked to create a new instance of the
081:             * Notification Service style event channel. This operation accepts two input parameters. The
082:             * first input parameter is a list of name-value pairs, which specify the initial QoS property
083:             * settings for the new channel. The second input parameter is a list of name-value pairs, which
084:             * specify the initial administrative property settings for the new channel. <br>
085:             * If no implementation of the <code>EventChannel</code> Interface exists that can support all
086:             * of the requested administrative property settings, the <code>UnsupportedAdmin</code>
087:             * exception is raised This exception contains as data a sequence of data structures, each
088:             * identifies the name of an administrative property in the input list whose requested setting
089:             * could not be satisfied, along with an error code and a range of settings for the property
090:             * which could be satisfied. The meanings of the error codes that might be returned are
091:             * described in <a href="%%%NOTIFICATION_SPEC_URL%%%">Notification Service Specification </a>
092:             * Table 2-5 on page 2-46. <br>
093:             * If neither of these exceptions is raised, the <code>create_channel</code> operation will
094:             * return a reference to a new Notification Service style event channel. In addition, the
095:             * operation assigns to this new event channel a numeric identifier, which is unique among all
096:             * event channels created by the target object. This numeric identifier is returned as an output
097:             * parameter.
098:             *
099:             * @param qualitiyOfServiceProperties
100:             *            a list of name-value pairs, which specify the initial QoS property settings for
101:             *            the new channel
102:             * @param administrativeProperties
103:             *            a list of name-value pairs, which specify the initial administrative property
104:             *            settings for the new channel
105:             * @param channelIdentifier
106:             *            a reference to the new event channel
107:             * @return a newly created event channel
108:             * @exception UnsupportedAdmin
109:             *                if no implementation supports the requested administrative settings
110:             * @exception UnsupportedQoS
111:             *                if no implementation supports the requested QoS settings
112:             */
113:            public EventChannel create_channel(
114:                    Property[] qualitiyOfServiceProperties,
115:                    Property[] administrativeProperties,
116:                    IntHolder channelIdentifier) throws UnsupportedAdmin,
117:                    UnsupportedQoS {
118:                try {
119:                    AbstractEventChannel _channelServant = create_channel_servant(
120:                            channelIdentifier, qualitiyOfServiceProperties,
121:                            administrativeProperties);
122:
123:                    addToChannels(channelIdentifier.value, _channelServant);
124:
125:                    return EventChannelHelper
126:                            .narrow(_channelServant.activate());
127:                } catch (UnsupportedQoS e) {
128:                    throw e;
129:                } catch (UnsupportedAdmin e) {
130:                    throw e;
131:                } catch (Exception e) {
132:                    logger_.fatalError("create_channel", e);
133:
134:                    throw new RuntimeException();
135:                }
136:            }
137:
138:            protected AbstractEventChannel newEventChannel() {
139:                final MutablePicoContainer _channelContainer = newContainerForChannel();
140:
141:                _channelContainer.registerComponentImplementation(
142:                        AbstractEventChannel.class, EventChannelImpl.class);
143:
144:                AbstractEventChannel channel = (AbstractEventChannel) _channelContainer
145:                        .getComponentInstanceOfType(AbstractEventChannel.class);
146:
147:                return channel;
148:            }
149:
150:            protected void channelCreated(AbstractEventChannel channel) {
151:                if (config_.getAttributeAsBoolean(
152:                        Attributes.LAZY_DEFAULT_ADMIN_INIT,
153:                        Default.DEFAULT_LAZY_DEFAULT_ADMIN_INIT)) {
154:                    ((EventChannelImpl) channel).default_consumer_admin();
155:                    ((EventChannelImpl) channel).default_supplier_admin();
156:                }
157:            }
158:
159:            /**
160:             * The <code>get_all_channels</code> operation returns a sequence of all of the unique numeric
161:             * identifiers corresponding to Notification Service event channels, which have been created by
162:             * the target object.
163:             *
164:             * @return an <code>int[]</code> value
165:             */
166:            public int[] get_all_channels() {
167:                return getAllChannels();
168:            }
169:
170:            /**
171:             * The <code>get_event_channel</code> operation accepts as input a numeric value that is
172:             * supposed to be the unique identifier of a Notification Service event channel, which has been
173:             * created by the target object. If this input value does not correspond to such a unique
174:             * identifier, the <code>ChannelNotFound</code> exception is raised. Otherwise, the operation
175:             * returns the object reference of the Notification Service event channel corresponding to the
176:             * input identifier.
177:             *
178:             * @param id
179:             *            an <code>int</code> the unique identifier of a Notification Service event
180:             *            channel
181:             * @return an <code>EventChannel</code> corresponding to the input identifier
182:             * @exception ChannelNotFound
183:             *                if the input value does not correspond to a Notification Service event channel
184:             */
185:            public EventChannel get_event_channel(int id)
186:                    throws ChannelNotFound {
187:                return EventChannelHelper.narrow(get_event_channel_servant(id)
188:                        .activate());
189:            }
190:
191:            public EventChannelFactory getEventChannelFactory() {
192:                return EventChannelFactoryHelper.narrow(this Ref_);
193:            }
194:
195:            public Servant getServant() {
196:                return new JacORBEventChannelFactoryPOATie(this );
197:            }
198:
199:            protected org.omg.CORBA.Object create_abstract_channel(
200:                    Property[] admin, Property[] qos, IntHolder id)
201:                    throws UnsupportedAdmin, UnsupportedQoS {
202:                return create_channel(admin, qos, id);
203:            }
204:        }
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