asterix-installer/src/main/resources/schema/installer-conf.xsd

<?xml version="1.0" encoding="ISO-8859-1" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:mg="installer" targetNamespace="installer" elementFormDefault="qualified">

<!-- definition of simple types --> 
<xs:element name="asterix_home" type="xs:string"/>
<xs:element name="hyracks_home" type="xs:string"/>
<xs:element name="hdfsurl" type="xs:string"/>
<xs:element name="server" type="xs:string"/>
<xs:element name="clientPort" type="xs:integer"/>
<xs:element name="homeDir" type="xs:string"/>
<xs:element name="version" type="xs:string"/>
<xs:element name="url" type="xs:string"/>
<xs:element name="backupDir" type="xs:string"/>
<xs:element name="java_home" type="xs:string"/>

<!-- definition of complex elements -->
<xs:element name="hdfs">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="mg:version"/>
      <xs:element ref="mg:url"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="backup">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="mg:hdfs" minOccurs="0"/> 
      <xs:element ref="mg:backupDir"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="zookeeper">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="mg:homeDir"/>
      <xs:element ref="mg:clientPort"/>
      <xs:element ref="mg:servers"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="servers">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="mg:java_home"/>
      <xs:element ref="mg:server" maxOccurs="unbounded"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="configuration">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="mg:backup" minOccurs="0"/>
      <xs:element ref="mg:asterix_home" minOccurs="0"/>
      <xs:element ref="mg:hyracks_home" minOccurs="0"/>
      <xs:element ref="mg:hdfsurl" minOccurs="0"/>
      <xs:element ref="mg:zookeeper"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

</xs:schema>