15.2. JdbcStringBasedStores

Procedure 15.4. Configure JdbcStringBasedStore in Remote Client-Server Mode

1. The string-keyed-jdbc-store Element

   The string-keyed-jdbc-store element specifies the configuration for a string based keyed cache JDBC store.
   1. The datasource parameter defines the name of a JNDI for the datasource.
   2. The passivation parameter determines whether entries in the cache are passivated (true) or if the cache store retains a copy of the contents in memory (false).
   3. The preload parameter specifies whether to load entries into the cache during start up. Valid values for this parameter are true and false.
   4. The purge parameter specifies whether or not the cache store is purged when it is started. Valid values for this parameter are true and false.
   5. The shared parameter is used when multiple cache instances share a cache store. This parameter can be set to prevent multiple cache instances writing the same modification multiple times. Valid values for this parameter are true and false.
   6. The singleton parameter enables a singleton store cache store. SingletonStore is a delegating cache store used when only one instance in a cluster can interact with the underlying store.

   <local-cache> 
   	...
   	<string-keyed-jdbc-store datasource="java:jboss/datasources/JdbcDS" 
   				 passivation="true" 
   				 preload="false" 
   				 purge="false"
   				 shared="false"
   				 singleton="true">
   

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2. The string-keyed-table Element

   The string-keyed-table element specifies information about the database table used to store string based cache entries.
   1. The prefix parameter specifies a prefix string for the database table name.

   <local-cache> 
   	...
   	<string-keyed-jdbc-store datasource="java:jboss/datasources/JdbcDS" 
   				 passivation="true" 
   				 preload="false" 
   				 purge="false"
   				 shared="false"
   				 singleton="true">
                  	<string-keyed-table prefix="JDG">
   

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3. The id-column Element

   The id-column element specifies information about a database column that holds cache entry IDs.
   1. The name parameter specifies the name of the ID column.
   2. The type parameter specifies the type of the ID column.

   <local-cache> 
   	...
   	<string-keyed-jdbc-store datasource="java:jboss/datasources/JdbcDS" 
   				 passivation="true" 
   				 preload="false" 
   				 purge="false"
   				 shared="false"
   				 singleton="true">
                  	<string-keyed-table prefix="JDG">
                  		<id-column name="id" 
   				   type="${id.column.type}"/>
   

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4. The data-column Element

   The data-column element contains information about a database column that holds cache entry data.
   1. The name parameter specifies the name of the database column.
   2. The type parameter specifies the type of the database column.

   <local-cache> 
   	...
   	<string-keyed-jdbc-store datasource="java:jboss/datasources/JdbcDS" 
   				 passivation="true" 
   				 preload="false" 
   				 purge="false"
   				 shared="false"
   				 singleton="true">
                  	<string-keyed-table prefix="JDG">
                  		<id-column name="id" 
   				   type="${id.column.type}"/>
   			<data-column name="datum" 
   				     type="${data.column.type}"/>
   

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5. The timestamp-column Element

   The timestamp-column element specifies information about the database column that holds cache entry timestamps.
   1. The name parameter specifies the name of the database column.
   2. The type parameter specifies the type of the database column.

   <local-cache> 
   	...
   	<string-keyed-jdbc-store datasource="java:jboss/datasources/JdbcDS" 
   				 passivation="true" 
   				 preload="false" 
   				 purge="false"
   				 shared="false"
   				 singleton="true">
                  	<string-keyed-table prefix="JDG">
                  		<id-column name="id" 
   				   type="${id.column.type}"/>
   			<data-column name="datum" 
   				     type="${data.column.type}"/>
   			<timestamp-column name="version" 
   					  type="${timestamp.column.type}"/>
   	        </string-keyed-table>
   	</string-keyed-jdbc-store>
   </local-cache>
   

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