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<?xml version="1.0" encoding="UTF-8"?>
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<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.example.org/config" xmlns:cfg="http://www.example.org/config" elementFormDefault="qualified">
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<!-- Simple word type -->
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<xs:simpleType name="word">
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<xs:restriction base="xs:string">
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<xs:pattern value="[a-zA-Z]*"/>
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</xs:restriction>
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</xs:simpleType>
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<!-- Parameters are simple column names without any space. -->
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<xs:complexType name="Parameters">
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<xs:sequence>
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<xs:element name="name" type="cfg:word" minOccurs="0" maxOccurs="unbounded"/>
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</xs:sequence>
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</xs:complexType>
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<!-- URI to a .class file -->
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<xs:simpleType name="Class">
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<xs:restriction base="xs:string">
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<xs:pattern value="(http|file)://.*\.class"/>
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</xs:restriction>
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</xs:simpleType>
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<!-- single converter type -->
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<xs:complexType name="Converter">
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<xs:sequence>
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<xs:element name="name" type="xs:string"/>
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<xs:element name="description" type="xs:string"/>
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<xs:element name="param_in" type="cfg:Parameters"/>
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<xs:element name="param_out" type="cfg:Parameters"/>
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<xs:element name="class" type="cfg:Class"/>
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<xs:element name="classname" type="xs:string"/>
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</xs:sequence>
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</xs:complexType>
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<!-- set of converters -->
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<xs:complexType name="Converters">
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<xs:sequence>
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<xs:element name="cv" type="cfg:Converter"/>
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</xs:sequence>
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</xs:complexType>
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<xs:element name="convs" type="cfg:Converters"/>
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</xs:schema>
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