001: /*--
002:
003: Copyright (C) 2002-2005 Adrian Price.
004: All rights reserved.
005:
006: Redistribution and use in source and binary forms, with or without
007: modification, are permitted provided that the following conditions
008: are met:
009:
010: 1. Redistributions of source code must retain the above copyright
011: notice, this list of conditions, and the following disclaimer.
012:
013: 2. Redistributions in binary form must reproduce the above copyright
014: notice, this list of conditions, and the disclaimer that follows
015: these conditions in the documentation and/or other materials
016: provided with the distribution.
017:
018: 3. The names "OBE" and "Open Business Engine" must not be used to
019: endorse or promote products derived from this software without prior
020: written permission. For written permission, please contact
021: adrianprice@sourceforge.net.
022:
023: 4. Products derived from this software may not be called "OBE" or
024: "Open Business Engine", nor may "OBE" or "Open Business Engine"
025: appear in their name, without prior written permission from
026: Adrian Price (adrianprice@users.sourceforge.net).
027:
028: THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
029: WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
030: OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
031: DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
032: INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
033: (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
034: SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
035: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
036: STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
037: IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
038: POSSIBILITY OF SUCH DAMAGE.
039:
040: For more information on OBE, please see
041: <http://obe.sourceforge.net/>.
042:
043: */
044:
045: package org.obe.server.j2ee.ejb;
046:
047: import org.obe.spi.service.ServerConfig;
048:
049: import javax.ejb.EJBLocalObject;
050: import javax.ejb.EntityBean;
051: import javax.ejb.EntityContext;
052: import javax.ejb.RemoveException;
053:
054: /**
055: * An abstract base for entity bean implementations. Subclasses are expected to
056: * call super.ejb*() from any overrides they provide for the EJB lifecycle
057: * methods.
058: *
059: * @author Adrian Price.
060: * @jboss.method-attributes pattern="get*"
061: * read-only="true"
062: */
063: public abstract class AbstractEntityEJB extends AbstractEJB implements
064: EntityBean {
065:
066: private static final long serialVersionUID = 4415129165316702725L;
067:
068: protected EntityContext _ctx;
069: protected EJBLocalObject _ejbLocalObject;
070:
071: protected AbstractEntityEJB() {
072: }
073:
074: // Subclasses can override this method in order to manage transient fields.
075: protected void clear() {
076: if (getLogger().isDebugEnabled() && ServerConfig.isVerbose())
077: getLogger().debug("clear()");
078: _ejbLocalObject = null;
079: }
080:
081: public void ejbActivate() {
082: if (getLogger().isDebugEnabled() && ServerConfig.isVerbose())
083: getLogger().debug(
084: "ejbActivate(pk=" + _ctx.getPrimaryKey() + ')');
085: }
086:
087: public void ejbLoad() {
088: if (getLogger().isDebugEnabled() && ServerConfig.isVerbose())
089: getLogger().debug(
090: "ejbLoad(pk=" + _ctx.getPrimaryKey() + ')');
091: clear();
092: _ejbLocalObject = _ctx.getEJBLocalObject();
093: }
094:
095: public void ejbPassivate() {
096: if (getLogger().isDebugEnabled() && ServerConfig.isVerbose())
097: getLogger().debug(
098: "ejbPassivate(pk=" + _ctx.getPrimaryKey() + ')');
099: clear();
100: }
101:
102: public void ejbRemove() throws RemoveException {
103: if (getLogger().isDebugEnabled() && ServerConfig.isVerbose())
104: getLogger().debug(
105: "ejbRemove(pk=" + _ctx.getPrimaryKey() + ')');
106: clear();
107: }
108:
109: public void ejbStore() {
110: if (getLogger().isDebugEnabled() && ServerConfig.isVerbose())
111: getLogger().debug(
112: "ejbStore(pk=" + _ctx.getPrimaryKey() + ')');
113: }
114:
115: public void setEntityContext(EntityContext ctx) {
116: if (getLogger().isDebugEnabled() && ServerConfig.isVerbose())
117: getLogger().debug("setEntityContext");
118: _ctx = ctx;
119: }
120:
121: public void unsetEntityContext() {
122: if (getLogger().isDebugEnabled() && ServerConfig.isVerbose())
123: getLogger().debug("unsetEntityContext");
124: _ctx = null;
125: }
126: }
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