Spotlight Importer Programming Guide
Contents
About Spotlight Importers 5
Who Should Read This Document 5 Organization of This Document 5 See Also 6
Extracting Metadata from Files 7
What Is a Spotlight Importer 7 Associating a Spotlight Importer with Files 8 Guidelines 8
Assigning Values to Metadata Attributes 9
Spotlight's Metadata Attributes 9 Localizing Metadata Attribute Values 10 Defining Custom Attributes 10 Attribute Naming Conventions 10 Defining the Value Object Type 10 Returning Multiple Values in an Attribute 10 Attribute Display Names and Descriptions 10
Spotlight Importer Schema Format 12
The Schema.xml File 12 Specifying Custom Attributes 13 Specifying the Attributes for a File 13
Writing a Spotlight Importer 15
Creating the Metadata Importer Project 15 Assigning a Unique ID to the Import Function 15 Associating an Importer with a File Type 17 Specifying Metadata Attributes 19 Assigning Values to Metadata Attributes 22
Spotlight Importer Performance 25 Troubleshooting Spotlight Importers 26
2011-09-21 | 2004, 2011 Apple Inc. All Rights Reserved.
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Where should I install my Spotlight importer 26 When will the Spotlight importer in my application bundle re-index files 26 How can I determine whether my Spotlight importer is being found 27 Why isn't my bundled importer being found 27 I've updated my importer and copied it to a Spotlight directory, but the old importer is still being used 28 How do I test my importer 28 How do I debug my importer using gdb 29 What does the system think the UTI is for a file 29 Running mdimport returns nothing 30 Running mdimport returns an unexpected UTI 30 mdimport does not return my metadata attributes 31 What are the imported metadata attributes for a specific file 33 Why isn't Spotlight finding my document bundles when they are saved by my application 35
Document Revision History 36
2011-09-21 | 2004, 2011 Apple Inc. All Rights Reserved.

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