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<?xml version="1.0" encoding="UTF-8"?>
<config xmlns="urn:com.cohga.server.config#1.0"...
<?include client_main.xml?>
</config>
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<?xml version="1.0" encoding="UTF-8"?>
<config xmlns="urn:com.cohga.server.config#1.0" xmlns:client="urn:com.cohga.html.client#1.0">
<client:config id="main">
<default>true</default>
<debug>false</debug>
<theme>grey</theme>
...
</client:config>
</config>
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<?xml version="1.0" encoding="UTF-8"?>
<config xmlns="urn:com.cohga.server.config#1.0"...
<jdbc:dataSource id="datasource.main">
<driver>oracle.jdbc.driver.OracleDriver</driver>
<url><![CDATA[jdbc:oracle:thin:@${HOSTNAME}:1521:GIS]]></url>
<username>reader</username>
<password>0hn0w3rdun</password>
<pool:pool>
<maxActive>15</maxActive>
<minIdle>2</minIdle>
<maxIdle>2</maxIdle>
<testOnBorrow>true</testOnBorrow>
<timeBetweenEvictionRunsMillis>60000</timeBetweenEvictionRunsMillis>
<minEvictableIdleTimeMillis>1200000</minEvictableIdleTimeMillis>
<whenExhaustedAction>grow</whenExhaustedAction>
</pool:pool>
</jdbc:dataSource>
</config>
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<?set HOSTNAME=development.example.com?>
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<?set HOSTNAME=production.example.com?>
|
...
Of course set can also be used to locate commonly referenced items in a single location at the start of the config.xml file to allow them to be easily changed later. For example passwords that are updated every month or defaults for functions such as connection timeouts.The
Externally defined values
In addition to the set processing instruction, the value for a substitution variable can also come from system properties , or from a property as defined during the startup of the Java Virtual Machine , not just values set using the set processing instruction(JVM option). ${property_name} notation can then be used to substitute the values in place.