Save useful length information for Clobs in store
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                 Key: DERBY-3907
                 URL: https://issues.apache.org/jira/browse/DERBY-3907
             Project: Derby
          Issue Type: Improvement
          Components: JDBC, Store
    Affects Versions: 10.5.0.0
            Reporter: Kristian Waagan
            Assignee: Kristian Waagan


The store should save useful length information for Clobs. This allows the 
length to be found without decoding the whole data stream.
The following thread raised the issue on what information to store, and also 
contains some background information: 
http://www.nabble.com/Storing-length-information-for-CLOB-on-disk-tp19197535p19197535.html

The information to store, and the exact format of it, is still to be 
discussed/determined.
Currently two bytes are set aside for length information, which is inadequate.

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