15.3. JdbcMixedStores


The JdbcMixedStore is a hybrid implementation that delegates keys based on their type to either the JdbcBinaryStore or JdbcStringBasedStore.

15.3.1. JdbcMixedStore Configuration (Remote Client-Server Mode)

The following is a configuration for a JdbcMixedStore for Red Hat JBoss Data Grid's Remote Client-Server mode with Passivation enabled.

Procedure 15.8. Configure JdbcMixedStore in Remote Client-Server Mode

  1. The mixed-keyed-jdbc-store Element

    The mixed-keyed-jdbc-store element specifies the configuration for a mixed 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.
    <local-cache>
                 <mixed-keyed-jdbc-store datasource="java:jboss/datasources/JdbcDS" 
    				     passivation="true" 
    				     preload="false" 
    				     purge="false">
    
  2. The binary-keyed-table Element

    The binary-keyed-table element specifies information about the database table used to store mixed cache entries.
    1. The prefix parameter specifies a prefix string for the database table name.
    <local-cache>
          <mixed-keyed-jdbc-store datasource="java:jboss/datasources/JdbcDS" 
    				     passivation="true" 
    				     preload="false" 
    				     purge="false">
    	         <binary-keyed-table prefix="MIX_BKT2">
                         <id-column name="id" 
    		                            type="${id.column.type}"/>
    		                 <data-column name="datum" 
    			                            type="${data.column.type}"/>
    		                 <timestamp-column name="version" 
    				                               type="${timestamp.column.type}"/>
                </binary-keyed-table>
    
  3. 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>
          <mixed-keyed-jdbc-store datasource="java:jboss/datasources/JdbcDS" 
    				     passivation="true" 
    				     preload="false" 
    				     purge="false">
    	         <binary-keyed-table prefix="MIX_BKT2">
                         <id-column name="id" 
    		                            type="${id.column.type}"/>
    		                 <data-column name="datum" 
    			                            type="${data.column.type}"/>
    		                 <timestamp-column name="version" 
    				                               type="${timestamp.column.type}"/>
                </binary-keyed-table>
                <string-keyed-table prefix="MIX_STR2">
    
  4. 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>
           <mixed-keyed-jdbc-store datasource="java:jboss/datasources/JdbcDS" 
    				     passivation="true" 
    				     preload="false" 
    				     purge="false">
    	         <binary-keyed-table prefix="MIX_BKT2">
                         <id-column name="id" 
    		                            type="${id.column.type}"/>
    		                 <data-column name="datum" 
    			                            type="${data.column.type}"/>
    		                 <timestamp-column name="version" 
    				                               type="${timestamp.column.type}"/>
                </binary-keyed-table>
                <string-keyed-table prefix="MIX_STR2">
                         <id-column name="id" 
    			                          type="${id.column.type}"/>
    
  5. 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>
            <mixed-keyed-jdbc-store datasource="java:jboss/datasources/JdbcDS" 
    				     passivation="true" 
    				     preload="false" 
    				     purge="false">
    	         <binary-keyed-table prefix="MIX_BKT2">
                         <id-column name="id" 
    		                            type="${id.column.type}"/>
    		                 <data-column name="datum" 
    			                            type="${data.column.type}"/>
    		                 <timestamp-column name="version" 
    				                               type="${timestamp.column.type}"/>
                </binary-keyed-table>
                     <string-keyed-table prefix="MIX_STR2">
                         <id-column name="id" 
    			                          type="${id.column.type}"/>
    		                 <data-column name="datum" 
    			                            type="${data.column.type}"/>
    
  6. 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 timestamp column.
    2. The type parameter specifies the type of the timestamp column.
      <local-cache>
          <mixed-keyed-jdbc-store datasource="java:jboss/datasources/JdbcDS" 
    				     passivation="true" 
    				     preload="false" 
    				     purge="false">
    	         <binary-keyed-table prefix="MIX_BKT2">
                         <id-column name="id" 
    		                            type="${id.column.type}"/>
    		                 <data-column name="datum" 
    			                            type="${data.column.type}"/>
    		                 <timestamp-column name="version" 
    				                               type="${timestamp.column.type}"/>
                </binary-keyed-table>
                     <string-keyed-table prefix="MIX_STR2">
                         <id-column name="id" 
    			                          type="${id.column.type}"/>
    		                 <data-column name="datum" 
    			                            type="${data.column.type}"/>
    		             <timestamp-column name="version" 
    			  	                         type="${timestamp.column.type}"/>
     	        	 		</string-keyed-table>
            </mixed-keyed-jdbc-store>
    			</local-cache>
        </cache-container>
    </subsystem>
    
    
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