2.1.3.3. Multi-database configuration

You need to configure each workspace in a repository. You may have each one on different remote servers as far as you need.

First of all, configure the data containers in the org.exoplatform.services.naming.InitialContextInitializer service. It is the JNDI context initializer which registers (binds) naming resources (DataSources) for data containers.

For example, the configuration for two data containers (jdbcjcr - local HSQLDB, jdbcjcr1 - remote MySQL) is as follows :


<component>

    <key>org.exoplatform.services.naming.InitialContextInitializer</key>

    <type>org.exoplatform.services.naming.InitialContextInitializer</type>

    <component-plugins>

      <component-plugin>

        <name>bind.datasource</name>

        <set-method>addPlugin</set-method>

        <type>org.exoplatform.services.naming.BindReferencePlugin</type>

        <init-params>

          <value-param>

            <name>bind-name</name>

            <value>jdbcjcr</value>

          </value-param>

          <value-param>

            <name>class-name</name>

            <value>javax.sql.DataSource</value>

          </value-param>

          <value-param>

            <name>factory</name>

            <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>

          </value-param>

          <properties-param>

            <name>ref-addresses</name>

(1)            <description>ref-addresses</description>

(2)            <property name="driverClassName" value="org.hsqldb.jdbcDriver"/>

(3)            <property name="url" value="jdbc:hsqldb:file:target/temp/data/portal"/>

(4)            <property name="username" value="sa"/>

            <property name="password" value=""/>

          </properties-param>

        </init-params>

      </component-plugin>

      <component-plugin>

        <name>bind.datasource</name>

        <set-method>addPlugin</set-method>

        <type>org.exoplatform.services.naming.BindReferencePlugin</type>

        <init-params>

          <value-param>

            <name>bind-name</name>

            <value>jdbcjcr1</value>

          </value-param>

          <value-param>

            <name>class-name</name>

            <value>javax.sql.DataSource</value>

          </value-param>

          <value-param>

            <name>factory</name>

            <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>

          </value-param>

          <properties-param>

            <name>ref-addresses</name>

            <description>ref-addresses</description>

            <property name="driverClassName" value="com.mysql.jdbc.Driver"/>

            <property name="url" value="jdbc:mysql://exoua.dnsalias.net/jcr"/>

            <property name="username" value="exoadmin"/>

(5)            <property name="password" value="exo12321"/>

(6)            <property name="maxActive" value="50"/>

(7)            <property name="maxIdle" value="5"/>

            <property name="initialSize" value="5"/>

          </properties-param>

        </init-params>

      </component-plugin>

    <component-plugins>

    <init-params>

      <value-param>

        <name>default-context-factory</name>

        <value>org.exoplatform.services.naming.SimpleContextFactory</value>

      </value-param>

    </init-params>

</component>

1

driverClassName, for example. "org.hsqldb.jdbcDriver", "com.mysql.jdbc.Driver", "org.postgresql.Driver"

2

url, for example, "jdbc:hsqldb:file:target/temp/data/portal", "jdbc:mysql://exoua.dnsalias.net/jcr"

3

username, for example, "sa", "exoadmin"

4

password, for example, "", "exo12321"

5

maxActive, for example, 50

6

maxIdle, for example, 5

7

initialSize, for example, 5

There are also some other connection pool configuration parameters (org.apache.commons.dbcp.BasicDataSourceFactory) according to Apache DBCP configuration.

When the data container configuration is done, you can configure the repository service. Each workspace will be configured for its own data container.

For example (two workspaces ws and ws1:


<workspaces>

  <workspace name="ws" auto-init-root-nodetype="nt:unstructured">

    <container class="org.exoplatform.services.jcr.impl.storage.jdbc.optimisation.CQJDBCWorkspaceDataContainer">

(1)    <properties>

(2)      <property name="source-name" value="jdbcjcr"/>

(3)      <property name="dialect" value="hsqldb"/>

(4)      <property name="multi-db" value="true"/>

(5)      <property name="max-buffer-size" value="200K"/>

      <property name="swap-directory" value="target/temp/swap/ws"/>   

    </properties>

    </container>

    <cache enabled="true">

      <properties>

        <property name="max-size" value="10K"/><!-- 10Kbytes -->

        <property name="live-time" value="30m"/><!-- 30 min -->

      </properties>

    </cache>

    <query-handler class="org.exoplatform.services.jcr.impl.core.query.lucene.SearchIndex">

    <properties>

      <property name="index-dir" value="target/temp/index"/>

    </properties>

    </query-handler>

    <lock-manager>

    <time-out>15m</time-out><!-- 15 min -->

    <persister class="org.exoplatform.services.jcr.impl.core.lock.FileSystemLockPersister">

      <properties>

      <property name="path" value="target/temp/lock/ws"/>

      </properties>

    </persister>

    </lock-manager>

  </workspace>

  <workspace name="ws1" auto-init-root-nodetype="nt:unstructured">

    <container class="org.exoplatform.services.jcr.impl.storage.jdbc.optimisation.CQJDBCWorkspaceDataContainer">

    <properties>

      <property name="source-name" value="jdbcjcr1"/>

      <property name="dialect" value="mysql"/>

      <property name="multi-db" value="true"/>

      <property name="max-buffer-size" value="200K"/>

      <property name="swap-directory" value="target/temp/swap/ws1"/>   

    </properties>

    </container>

    <cache enabled="true">

      <properties>

        <property name="max-size" value="10K"/>

        <property name="live-time" value="5m"/>

      </properties>

    </cache>

    <query-handler class="org.exoplatform.services.jcr.impl.core.query.lucene.SearchIndex">

    <properties>

      <property name="index-dir" value="target/temp/index"/>

    </properties>

    </query-handler>

    <lock-manager>

    <time-out>15m</time-out><!-- 15 min -->

    <persister class="org.exoplatform.services.jcr.impl.core.lock.FileSystemLockPersister">

      <properties>

      <property name="path" value="target/temp/lock/ws1"/>

      </properties>

    </persister>

    </lock-manager>

  </workspace>

</workspaces>

    

1

source-name: A javax.sql.DataSource name configured in InitialContextInitializer component.

2

dialect: A database dialect, one of "hsqldb", "mysql", "mysql-utf8", "pgsql", "pgsql-scs", "oracle", "oracle-oci", "mssql", "sybase", "derby", "db2", "db2v8" or "auto" for dialect autodetection;

3

multi-db: Enable multi-database container with this parameter (set value "true");

4

max-buffer-size: A threshold (in bytes) after which a javax.jcr. Value content will be swapped to a file in a temporary storage. For example: swap for pending changes.

5

swap-directory: A path in the file system used to swap the pending changes.

In this way, you have configured two workspaces which will be persisted in two different database (ws in HSQLDB, ws1 in MySQL).

Note

The repository configuration parameters supports human-readable formats of values (for example: 200K - 200 Kbytes, 30m - 30 minutes, etc)

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