JBoss EAP6 has provided the schema documents in docs/schema. Each schema has defined a namespace used by the EAP6 configuration file. For example, we can check the beginning of standalone.xml and see the xml namespace it's using:
<?xml version='1.0' encoding='UTF-8'?> <server xmlns="urn:jboss:domain:1.4"> ...
We can see that the namespace used is urn:jboss:domain:1.4. Let's find the defined namespace in the docs/schema directory by using the grep command:
$ grep -rl 'urn:jboss:domain:1.4' * jboss-as-config_1_4.xsd
We can see that jboss-as-config_1_4.xsd contains the definition of the xml namespace we are searching for. Now we can check the definitions for each element in this namespace. For example, if we want to understand the meaning of the server section in standalone.xml, we can check its definition in the xsd file:
<xs:element name="server">
<xs:annotation>
<xs:documentation>
Root element for a document specifying the configuration
of a single "standalone" server that does not operate
as part of a domain...
</xs:documentation>
</xs:annotation>
...
</xs:element>As we have seen in the previous code snippet, the xsd schemas are very useful documents. They can help us to understand the meaning of the elements in configuration files.