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epriestley 7aa12f192a Add PhabricatorQueryIterator, for buffered iteration over a CursorPagedPolicyAwareQuery
Summary:
See D19446. This should make it easier to process larger, more complex result sets in constant memory.

Today, `LiskMigrationIterator` takes constant memory but can't apply `needX()` reqeusts or `withY(...)` constraints.

Using a raw `Query` can handle this stuff, but requires memory proportional to the size of the result set.

Offer the best of both worlds: constant memory and full access to the power of `Query` classes.

Test Plan:
Used this script to iterate over every commit, saw sensible behavior:

```name=list-commits.php
<?php

require_once 'scripts/init/init-script.php';

$viewer = PhabricatorUser::getOmnipotentUser();

$query = id(new DiffusionCommitQuery())
  ->setViewer($viewer);

$iterator = new PhabricatorQueryIterator($query);
foreach ($iterator as $commit) {
  echo $commit->getID()."\n";
}
```

Reviewers: amckinley

Reviewed By: amckinley

Differential Revision: https://secure.phabricator.com/D19450
2018-05-14 12:13:51 -07:00
bin Add a "lock log" for debugging where locks are being held 2018-03-05 17:55:34 -08:00
conf Support "ssl.chain" in Aphlict configuration 2016-04-14 10:41:21 -07:00
externals Add profile images to Repositories 2017-06-12 07:51:39 -07:00
resources Fix "arc paste" to stop creating pastes with an empty string ("") as the "language" 2018-05-09 13:22:58 -07:00
scripts Update install_ubuntu.sh to the new age 2018-04-21 09:57:33 -07:00
src Add PhabricatorQueryIterator, for buffered iteration over a CursorPagedPolicyAwareQuery 2018-05-14 12:13:51 -07:00
support Always setlocale() to en_US.UTF-8 for the main process 2018-02-05 12:23:06 -08:00
webroot Fix "arc paste" to stop creating pastes with an empty string ("") as the "language" 2018-05-09 13:22:58 -07:00
.arcconfig Set "history.immutable" to "false" explicitly in .arcconfig 2016-08-03 08:12:49 -07:00
.arclint Begin adding test coverage to GitHub Events API parsers 2016-03-09 09:30:07 -08:00
.arcunit Use the configuration driven unit test engine 2015-08-11 07:57:11 +10:00
.editorconfig Fix text lint issues 2015-02-12 07:00:13 +11:00
.gitignore Make i18n string extraction faster and more flexible 2016-07-04 10:23:30 -07:00
LICENSE Fix text lint issues 2015-02-12 07:00:13 +11:00
NOTICE Update Phabricator NOTICE file to reflect modern legal circumstances 2014-06-25 13:42:13 -07:00
README.md Remove push to IRC from "readme.md" too 2015-10-24 18:39:16 -07:00

Phabricator is a collection of web applications which help software companies build better software.

Phabricator includes applications for:

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  • also some other things.

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