Appendix B. JDO Metadata DTD

The following XML DTD describes the form of JDO metadata.

<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright (c) 2002 Sun Microsystems, Inc.,
901 San Antonio Road,
Palo Alto, California 94303, U.S.A.
All rights reserved.

This is the DTD defining the Java Data Objects 1.0 metadata.
-->

<!NOTATION JDO.1_0 PUBLIC
          "-//Sun Microsystems, Inc.//DTD Java Data Objects Metadata 1.0//EN">
<!--
This is the XML DTD for the JDO 1.0 Metadata.
All JDO 1.0 metadata descriptors must include a DOCTYPE of the following form:
  <!DOCTYPE jdo
    PUBLIC "-//Sun Microsystems, Inc.//DTD Java Data Objects Metadata 1.0//EN"
    "http://java.sun.com/dtd/jdo_1_0.dtd">
-->


<!ELEMENT jdo ((package)+, (extension)*)>

<!ELEMENT package ((class)+, (extension)*)>
<!ATTLIST package name CDATA #REQUIRED>

<!ELEMENT class (field|extension)*>
<!ATTLIST class name CDATA #REQUIRED>
<!ATTLIST class identity-type (application|datastore|nondurable) #IMPLIED>
<!ATTLIST class objectid-class CDATA #IMPLIED>
<!ATTLIST class requires-extent (true|false) 'true'>
<!ATTLIST class persistence-capable-superclass CDATA #IMPLIED>

<!ELEMENT field ((collection|map|array)?, (extension)*)?>
<!ATTLIST field name CDATA #REQUIRED>
<!ATTLIST field persistence-modifier (persistent|transactional|none) #IMPLIED>
<!ATTLIST field primary-key (true|false) 'false'>
<!ATTLIST field null-value (exception|default|none) 'none'>
<!ATTLIST field default-fetch-group (true|false) #IMPLIED>
<!ATTLIST field embedded (true|false) #IMPLIED>

<!ELEMENT collection (extension)*>
<!ATTLIST collection element-type CDATA #IMPLIED>
<!ATTLIST collection embedded-element (true|false) #IMPLIED>

<!ELEMENT map (extension)*>
<!ATTLIST map key-type CDATA #IMPLIED>
<!ATTLIST map embedded-key (true|false) #IMPLIED>
<!ATTLIST map value-type CDATA #IMPLIED>
<!ATTLIST map embedded-value (true|false) #IMPLIED>

<!ELEMENT array (extension)*>
<!ATTLIST array embedded-element (true|false) #IMPLIED>

<!ELEMENT extension (extension)*>
<!ATTLIST extension vendor-name CDATA #REQUIRED>
<!ATTLIST extension key CDATA #IMPLIED>
<!ATTLIST extension value CDATA #IMPLIED>