Google Data APIs Objective-C Client Library

The Google data APIs provide a simple protocol for reading and writing data on the web. Many Google services provide a Google data API.

Each of the following Google services provides a Google data API:

• Google Base
• Blogger
• Book Search
• Calendar
• Code Search
• Contacts
• Documents List
• Finance
• Notebook
• Picasa Web Albums
• Spreadsheets
• Webmaster Tools
• YouTube

The Google Data APIs Objective-C Client Library provides a Mac OS X framework and source code that make it easy to access data through Google Data APIs.

What is new in this release:

Additions

• Added Google Health classes
• Added YouTube user event activity classes
• Added Calendar guest elements and inlinecomments query parameter
• Contacts sample updated to optionally fetch only the MyContacts group.

Changes

• Calendar now defaults to service version 2.1, which slightly changes responses and response codes from 2.0. http://code.google.com/apis/calendar/changelog.html
• Release builds on iPhone now compile out the elaborate descriptions for each GDataObject. Developers can set GDATA_SIMPLE_DESCRIPTIONS in their projects to control this behavior.
• Release builds on iPhone now compile out the http logging code. Developers can set STRIP_GDATA_FETCH_LOGGING in their projects to control this behavior.
• The GDataXMLNode xml shim now registers the topmost namespaces for XPath resolution.
• Various internal refactoring for improved code readability and maintainability.
• For parsing performance, unknown elements and attributes are now removed from GDataObjects by comparing only object pointers, not the underlying XML.
• For parsing performance, GDataObject extension declarations are cached rather than duplicated in each object.
• To reduce memory usage, GDataObject extensions are stored in arrays only when there is more than one instance of an extension class.
• To reduce memory usage, GDataXMLNode now caches all generated NSStrings, and returns nil instead of empty arrays on getters. This may deviate from NSXML semantics of returning empty arrays.
• GDataOrganization setters now filter out empty string org names and titles.

Bugs Fixed

• Fixed leak in -keepChildXMLElementsForElement (thanks alexkac)
• GDataXMLNode now consistently returns cached copies of child elements and attributes rather than duplicate copies.
• Fixed possibiilty of If-modified-since header being added to http deletes