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Server side metadata is generated by using java classes and the extractors that will be used are configured in the product-types.xml file in the chosen policy directory. For this example configuration, you should have /usr/local/oodt/cas-filemgr/policy/coreoodt as the policy directory, unless you're running version 0.3 or earlier of OODT, in which case you should have /usr/local/oodt/cas-filemgr/policy as the policy directory.

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For the GenericFile type find the <metExtractors> key. It's specifying some extractors to use for server side metadata extraction, namely: CoreMetExtractor, MimeTypeExtractor, FinalFileLocationExtractor. For more details about metadata and extractors see the following page: http://oodt.apache.org/components/maven/metadata/user/basic.html Metadata Extractors.

If you're feeling curious, check out the other xml files in the /usr/local/oodt/cas-filemgr/policy subdirectories to get a better feel for how we define product types and elements. For a discussion of best practices w.r.t File Manager Policy, the reader is referred to Everything you want to know about File Manager Policy

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