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From "Jesse Dubay (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SOLR-3887) Add support for arrays of operations to JSON Update Handler
Date Tue, 25 Sep 2012 06:47:07 GMT
Jesse Dubay created SOLR-3887:
---------------------------------

             Summary: Add support for arrays of operations to JSON Update Handler
                 Key: SOLR-3887
                 URL: https://issues.apache.org/jira/browse/SOLR-3887
             Project: Solr
          Issue Type: Improvement
          Components: update
    Affects Versions: 4.0-BETA
            Reporter: Jesse Dubay
            Priority: Minor
             Fix For: 4.0
         Attachments: SOLR-3887.patch

Currently, UpdateRequestHandler accepts a sequence of operations in JSON format by specifying
duplicate keys. While duplicate keys aren't forbidden by the JSON spec, in practice, this
makes the update handler difficult to use in conjunction with JSON serialization libraries
in clients.

This has been mitigated somewhat by adding special syntax to add and delete in SOLR-2496 and
SOLR-3508 respectively, but there's still no way to specify operations in a particular sequence
as you can with XML. Per the JSON spec, the right way to do this is with an array, as objects
are considered unordered sets.

Using an array at the top level would obviate the need for such a key, but that syntax was
used in the fix for SOLR-2496 as a shortcut for adds, so...

The attached patch adds an "operations" key that can exist at the same level as any other
operation. The "operations" key's value is an array of objects, each of which uses the same
syntax as the root object:

{code}
{
  "operations": [
      {"add": {"id": "1"}},
      {"delete": {"query": "foo"}},
      {"add": {"id": "2"}},
      {"commit": {}},
  ]
}
{code}

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