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[Bug 10064] New: Modifying functions should throw when called under invalid conditions

From: <bugzilla@jessica.w3.org>
Date: Fri, 02 Jul 2010 09:40:55 +0000
To: public-webapps@w3.org
Message-ID: <bug-10064-2927@http.www.w3.org/Bugs/Public/>

           Summary: Modifying functions should throw when called under
                    invalid conditions
           Product: WebAppsWG
           Version: unspecified
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Indexed Database API
        AssignedTo: andreip@google.com
        ReportedBy: jonas@sicking.cc
         QAContact: member-webapi-cvs@w3.org
                CC: mike@w3.org, public-webapps@w3.org

There are a number of situations where we immediately upon call to modifying
functions know that the call was made in error without consulting the database.
This applies in the following situations:

1. When IDBObjectStore.add, IDBObjectStore.put, IDBObjectStore.remove,
IDBCursor.update or IDBCursor.remove is called from a READ_ONLY transaction.
2. When the object provided to add/put/update can't be cloned using the
structured clone algorithm. (we can rely on HTML5 to define when and what this
3. When IDBCursor.update is called in such a way that it alters the key of the
object. (only apples to in-line keys)
4. When IDBObjectStore.add or IDBObjectStore.put is called on an objectStore
which doesn't use a key generator, and no key is provided (note that keys are
supplied in-line in some stores)

For more details about rationale, see the thread started at

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Received on Friday, 2 July 2010 09:40:56 UTC

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