RESOLVED WONTFIX 91127
IndexedDB: add non-modifying methods to check index existance 
https://bugs.webkit.org/show_bug.cgi?id=91127
Summary IndexedDB: add non-modifying methods to check index existance
Alec Flett
Reported 2012-07-12 11:33:25 PDT
The current findKeyInIndex (in IDBLevelDBBackingStore.cpp) sometimes modifies the database to remove stale index entries. Sometimes this is fine, but sometimes when you're looking up a index key multiple times (like once to check if it's there, and a second time to find which record to overwrite) you want to have a little more control over when we're actually modifying the database. More concretely, this means that IDBBackingStore::keyExistsInIndex() and IDBBackingStore::getPrimaryKeyViaIndex cannot be const, which is going to possibly complicate caching down the road in IDB.Next. So what we need is two version of findKeyInIndex, and figure out when is a good time to call the const vs the non-const one.
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