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epriestley 305fb3fbd9 Migrate all Differential comment text into new storage
Summary:
Ref T2222. Currently, `DifferentialComment` stores both (a) the text of comments and (b) various other transaction details. This data needs to map to both Transactions and TransactionComments in the long run. This diff separates out all the data which is bound for the TransactionComment table, so that when we migrate `DifferentialComment` itself it will //only// need to migrate into the Transactions table. This is a much simpler migration than the inline comment one was, partly because it set up infrastructure and partly because the data is less complex.

Basically, I'm just proxying the read/write for the comment text into the other table. All readers already go through the Query class, and there are only three writers (preview, comment, implicit comment on diff update) which are all highly regular and straightforward to test.

We can also back out of this diff very easily: doing double writes cost only one line of code (`$this->content = $content;`) so we have proper double writes and a trivial revert path.

Test Plan:
  - Without migrating, added comments and saw them show up.
  - Migrated.
  - Saw all the old comments, and no damage to the new ones.
  - Added new comments.
  - Used comment preview.
  - Updated a revision to implicitly create an update comment and verified it looked OK.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2222

Differential Revision: https://secure.phabricator.com/D8196
2014-02-11 11:34:15 -08:00
bin Write a very basic string extractor 2014-02-05 11:02:41 -08:00
conf Remove session limits and sequencing 2014-01-15 17:27:59 -08:00
externals Add a common password blacklist 2014-01-23 14:01:18 -08:00
resources Migrate all Differential comment text into new storage 2014-02-11 11:34:15 -08:00
scripts Add ButtonBar icons 2014-02-09 10:22:12 -08:00
src Migrate all Differential comment text into new storage 2014-02-11 11:34:15 -08:00
support Disable SimpleXML entity loader in Phabricator 2014-01-23 14:00:44 -08:00
webroot Missed a class (multicolumn) 2014-02-11 07:47:09 -08:00
.arcconfig Use JsShrink if jsxmin is not available 2013-05-18 17:04:22 -07:00
.divinerconfig Centralize rendering of application mail bodies 2012-07-16 19:01:43 -07:00
.editorconfig Specify config for text editors 2012-11-03 22:34:44 -07:00
.gitignore Drive all Celerity operations from the new map 2013-12-31 18:04:25 -08:00
LICENSE Delete license headers from files 2012-11-05 11:16:51 -08:00
NOTICE Increment year. 2013-01-03 05:45:08 -08:00
README Modernize README 2014-01-24 12:28:54 -08:00

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