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<h1>Configuration</h1><div id="TOC"><div id="TOCinner"><span class="TOCtitle">Contents</span><div class="TOCcontents"><ul><li><a href ="#hibernate.cfg.xml">hibernate.cfg.xml</a></li><li><a href ="#Manual Creation of dRS Tables And Columns ">Manual Creation of dRS Tables And Columns </a></li><li><a href ="#Hibernate Mapping Files ">Hibernate Mapping Files </a></li></ul></li></ul></div></div></div><script>
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</script><p><font color="#990000">This topic applies to Java version only</font> </p>
<a name="hibernate.cfg.xml"></a><h2>hibernate.cfg.xml</h2>
<p>Hibernate requires a xml configuration file (hibernate.cfg.xml) to run.
In order to run dRS with Hibernate, the user has to set some parameters
in the configuration file. </p>
<div class="FormattedSourceCode"><div class="fscHeader"><span class="fscFileName">hibernate.cfg.xml</span></div><div class="fscCode"><pre ID="..Hibernate.Zipshibernate.Cfg.Xml_Hibernate.Cfg.Xml_300_44"><div><!--
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--><span style="color: #008080;">01</span><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/><span style="color: #0000FF;"><</span><span style="color: #800000;">hibernate-configuration</span><span style="color: #0000FF;">></span><span style="color: #000000;"> </span><span style="color: #0000FF;"><</span><span style="color: #800000;">session-factory</span><span style="color: #0000FF;">></span><span style="color: #000000;">
</span><span style="color: #008080;">02</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/> </span><span style="color: #008000;"><!--</span><span style="color: #008000;"> Database connection settings </span><span style="color: #008000;">--></span><span style="color: #000000;">
</span><span style="color: #008080;">03</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/> </span><span style="color: #0000FF;"><</span><span style="color: #800000;">property </span><span style="color: #FF0000;">name</span><span style="color: #0000FF;">="hibernate.connection.driver_class"</span><span style="color: #0000FF;">></span><span style="color: #000000;">oracle.jdbc.driver.OracleDriver</span><span style="color: #0000FF;"></</span><span style="color: #800000;">property</span><span style="color: #0000FF;">></span><span style="color: #000000;">
</span><span style="color: #008080;">04</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/> </span><span style="color: #0000FF;"><</span><span style="color: #800000;">property </span><span style="color: #FF0000;">name</span><span style="color: #0000FF;">="hibernate.connection.url"</span><span style="color: #0000FF;">></span><span style="color: #000000;">jdbc:oracle:thin:@ws-peterv:1521:websys</span><span style="color: #0000FF;"></</span><span style="color: #800000;">property</span><span style="color: #0000FF;">></span><span style="color: #000000;">
</span><span style="color: #008080;">05</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/> </span><span style="color: #0000FF;"><</span><span style="color: #800000;">property </span><span style="color: #FF0000;">name</span><span style="color: #0000FF;">="hibernate.connection.username"</span><span style="color: #0000FF;">></span><span style="color: #000000;">db4o</span><span style="color: #0000FF;"></</span><span style="color: #800000;">property</span><span style="color: #0000FF;">></span><span style="color: #000000;">
</span><span style="color: #008080;">06</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/> </span><span style="color: #0000FF;"><</span><span style="color: #800000;">property </span><span style="color: #FF0000;">name</span><span style="color: #0000FF;">="hibernate.connection.password"</span><span style="color: #0000FF;">></span><span style="color: #000000;">db4o</span><span style="color: #0000FF;"></</span><span style="color: #800000;">property</span><span style="color: #0000FF;">></span><span style="color: #000000;">
</span><span style="color: #008080;">07</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/> </span><span style="color: #008000;"><!--</span><span style="color: #008000;"> JDBC connection pool (use the built-in) </span><span style="color: #008000;">--></span><span style="color: #000000;">
</span><span style="color: #008080;">08</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/> </span><span style="color: #0000FF;"><</span><span style="color: #800000;">property </span><span style="color: #FF0000;">name</span><span style="color: #0000FF;">="hibernate.connection.pool_size"</span><span style="color: #0000FF;">></span><span style="color: #000000;">1</span><span style="color: #0000FF;"></</span><span style="color: #800000;">property</span><span style="color: #0000FF;">></span><span style="color: #000000;">
</span><span style="color: #008080;">09</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/> </span><span style="color: #008000;"><!--</span><span style="color: #008000;"> SQL dialect </span><span style="color: #008000;">--></span><span style="color: #000000;">
</span><span style="color: #008080;">10</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/> </span><span style="color: #0000FF;"><</span><span style="color: #800000;">property </span><span style="color: #FF0000;">name</span><span style="color: #0000FF;">="hibernate.dialect"</span><span style="color: #0000FF;">></span><span style="color: #000000;">org.hibernate.dialect.OracleDialect</span><span style="color: #0000FF;"></</span><span style="color: #800000;">property</span><span style="color: #0000FF;">></span><span style="color: #000000;">
</span><span style="color: #008080;">11</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/> </span><span style="color: #008000;"><!--</span><span style="color: #008000;"> Echo all executed SQL to stdout </span><span style="color: #008000;">--></span><span style="color: #000000;">
</span><span style="color: #008080;">12</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/> </span><span style="color: #0000FF;"><</span><span style="color: #800000;">property </span><span style="color: #FF0000;">name</span><span style="color: #0000FF;">="hibernate.show_sql"</span><span style="color: #0000FF;">></span><span style="color: #000000;">false</span><span style="color: #0000FF;"></</span><span style="color: #800000;">property</span><span style="color: #0000FF;">></span><span style="color: #000000;">
</span><span style="color: #008080;">13</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/> </span><span style="color: #008000;"><!--</span><span style="color: #008000;"> Update the database schema if out of date </span><span style="color: #008000;">--></span><span style="color: #000000;">
</span><span style="color: #008080;">14</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/> </span><span style="color: #0000FF;"><</span><span style="color: #800000;">property </span><span style="color: #FF0000;">name</span><span style="color: #0000FF;">="hibernate.hbm2ddl.auto"</span><span style="color: #0000FF;">></span><span style="color: #000000;">update</span><span style="color: #0000FF;"></</span><span style="color: #800000;">property</span><span style="color: #0000FF;">></span><span style="color: #000000;">
</span><span style="color: #008080;">15</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/>
</span><span style="color: #008080;">16</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/> </span><span style="color: #0000FF;"><</span><span style="color: #800000;">property </span><span style="color: #FF0000;">name</span><span style="color: #0000FF;">="hibernate.jdbc.batch_size"</span><span style="color: #0000FF;">></span><span style="color: #000000;">0</span><span style="color: #0000FF;"></</span><span style="color: #800000;">property</span><span style="color: #0000FF;">></span><span style="color: #000000;">
</span><span style="color: #008080;">17</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/> </span><span style="color: #0000FF;"></</span><span style="color: #800000;">session-factory</span><span style="color: #0000FF;">></span><span style="color: #000000;">
</span><span style="color: #008080;">18</span><span style="color: #000000;"><img src="../../../Utility/ActiPro.CodeHighligher/OutliningIndicators/None.gif" align="top"/></span><span style="color: #0000FF;"></</span><span style="color: #800000;">hibernate-configuration</span><span style="color: #0000FF;">></span></div></pre></div></div> </p>
<p>For the property "hibernate.connection.pool_size", dRS requires only 1
connection to the RDBMS, increasing it will not have any effect.
"hibernate.jdbc.batch_size" is set to 0 is for easier debugging. You
may increase it to batch SQL statements to potentially increase
performance.</p>
<p>It is a MUST that "hibernate.hbm2ddl.auto" be set to "update" because
the system will create some extra tables to store the metadata for
replication to work properly.<code></code></p>
<p><code><property name="hibernate.hbm2ddl.auto">update</property></code> </p>
<a name="Manual Creation of dRS Tables And Columns "></a><h2>Manual Creation of dRS Tables And Columns </h2>
<p>In some situations, you may not have the privilege to create or alter
tables. You may need to ask your DBA to create the tables for you
before using dRS.</p>
<p>You can turn off the automatic creation of dRS tables and columns by
changing the "hibernate.hbm2ddl.auto" property to "validate" in
hibernate.cfg.xml. By doing so, dRS will not create or alter any
tables. Rather, it will check the existence of the dRS tables before
starting replication. </p>
<p>If the required dRS tables do not exist, dRS will throw a RuntimeException notifying the user and the replication will halt. </p>
<a name="Hibernate Mapping Files "></a><h2>Hibernate Mapping Files </h2>
<p>Persisted Objects are objects that the user wants to store to the database, e.g. cars, pilots, purchase orders.<br>
For dRS to operate properly, for each persisted object, the user MUST
declare the primary key column of the database table in the hbm.xml
mapping file as follow:</p>
<p><code><id column="typed_id" type="long"></code><br>
<code> <generator class="native"/></code><br>
<code></id></code> <br></p>
<p><br>
- column - The name of the primary key column. The value can be well-formed string . "typed_id" is recommended.<br>
- type - MUST be "long"<br>
- class - MUST be "native"<br>
The "typed_id" column stores the id used by Hibernate. It allows dRS to
identify a persisted object by invoking
org.hibernate.Session#getIdentifier(Object object).</p>
<p>If you do not define getter/setter for property, make
default-access="field". default-lazy="false" default-cascade="save-update" is required for replication to work
properly. Note, you should not set the cascade style to "delete",
otherwise deletion replication will not work.<br><a title="outline19" class="" name="outline19"></a></p>
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This revision (2) was last Modified 2007-07-09T14:55:46 by Tetyana.
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