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| <p><span class="bodyBlack"> |
| Each CMP Container you declare in your openejb.conf file requires two Castor JDO <a href="http://www.castor.org/database-conf.html">database files</a> to be created. |
| <table cellspacing="2" cellpadding="2" border="0"><tr><td height="5" colspan="2"></td></tr><span class="bodyGrey"> |
| <tr><td width="10" valign="top" align="left"><img src="images/grayDot.gif"></td><td valign="top" align="left"><span class="bodyBlack">A Local_TX_Database file</span></td></tr> |
| <tr><td width="10" valign="top" align="left"><img src="images/grayDot.gif"></td><td valign="top" align="left"><span class="bodyBlack">A Global_TX_Database file</span></td></tr> |
| </span></table> |
| </span></p> |
| |
| |
| <a name="Local TX database file"><h3>Local TX database file</h3></a> |
| <p><span class="bodyBlack"> |
| Each CMP container will need a Local_TX_Database file. This file |
| specifies the configuration for |
| <table cellspacing="2" cellpadding="2" border="0"><tr><td height="5" colspan="2"></td></tr><span class="bodyGrey"> |
| <tr><td width="10" valign="top" align="left"><img src="images/grayDot.gif"></td><td valign="top" align="left"><span class="bodyBlack">Obtaining <b>direct</b> database connections</span></td></tr> |
| <tr><td width="10" valign="top" align="left"><img src="images/grayDot.gif"></td><td valign="top" align="left"><span class="bodyBlack">Any number of mapping.xml schema files</span></td></tr> |
| </span></table> |
| </span></p> |
| <p><span class="bodyBlack"> |
| This file is used when non-transactional connections are needed to the database. |
| This is when the TransactionManager is not managing the transaction, |
| such as when the tx attribute of the EntityBean method is Supports |
| (with no client tx), NotSupported, or Never. |
| </span></p> |
| <p><span class="bodyBlack"> |
| Supports, NotSupported and Never refer to the container-managed |
| transaction attributes defined be the EJB specification. |
| </span></p> |
| |
| <a name="Global TX database file"><h3>Global TX database file</h3></a> |
| <p><span class="bodyBlack"> |
| Each CMP container will need a Global_TX_Database file. This file |
| specifies the configuration for |
| <table cellspacing="2" cellpadding="2" border="0"><tr><td height="5" colspan="2"></td></tr><span class="bodyGrey"> |
| <tr><td width="10" valign="top" align="left"><img src="images/grayDot.gif"></td><td valign="top" align="left"><span class="bodyBlack">Obtaining <b>managed</b> database connections</span></td></tr> |
| <tr><td width="10" valign="top" align="left"><img src="images/grayDot.gif"></td><td valign="top" align="left"><span class="bodyBlack">The same mapping files as the Local_TX_Database file</span></td></tr> |
| </span></table> |
| </span></p> |
| <p><span class="bodyBlack"> |
| This file is used when transactional connections are needed to the database. |
| This is when the TransactionManager is managing the transaction, |
| such as when the tx attribute of the EntityBean method is Supports (client has tx), |
| RequiresNew, Required or Manditory. |
| </span></p> |
| <p><span class="bodyBlack"> |
| Supports, RequiresNew, Required and Manditory refer to the |
| container-managed transaction attributes defined be the EJB specification. |
| </span></p> |
| |
| <a name="Setting the 'engine' attribute"><h2>Setting the 'engine' attribute</h2></a> |
| <p><span class="bodyBlack">In both these files there is an <b>engine</b> attribute which tells |
| Castor JDO what database you are working with. This allows |
| it to take care of database specific aspects of persisting data to the database. |
| </span></p> |
| <p><span class="bodyBlack"> |
| See this doc for a of supported databases.<br> |
| <a href="http://www.castor.org/database-conf.html">http://www.castor.org/database-conf.html</a> |
| </span></p> |
| </td><td align="left" valign="top" height="5" width="120"> |
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