Use application PHIDs in Paste

Summary: Ref T2715. Switch Paste to application PHIDs.

Test Plan: Used `conduit.query`; `conduit.lookup`; grepped for constants.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6555

src/applications/paste/phid/PhabricatorPastePHIDTypePaste.php

@@ -0,0 +1,75 @@
+<?php
+
+final class PhabricatorPastePHIDTypePaste extends PhabricatorPHIDType {
+
+  const TYPECONST = 'PSTE';
+
+  public function getTypeConstant() {
+    return self::TYPECONST;
+  }
+
+  public function getTypeName() {
+    return pht('Paste');
+  }
+
+  public function newObject() {
+    return new PhabricatorPaste();
+  }
+
+  public function loadObjects(
+    PhabricatorObjectQuery $query,
+    array $phids) {
+
+    return id(new PhabricatorPasteQuery())
+      ->setViewer($query->getViewer())
+      ->withPHIDs($phids)
+      ->execute();
+  }
+
+  public function loadHandles(
+    PhabricatorHandleQuery $query,
+    array $handles,
+    array $objects) {
+
+    foreach ($handles as $phid => $handle) {
+      $paste = $objects[$phid];
+
+      $id = $paste->getID();
+      $name = $paste->getFullName();
+
+      $handle->setName("P{$id}");
+      $handle->setFullName("P{$id}: {$name}");
+      $handle->setURI("/P{$id}");
+    }
+  }
+
+  public function canLoadNamedObject($name) {
+    return preg_match('/^P\d*[1-9]\d*$/i', $name);
+  }
+
+  public function loadNamedObjects(
+    PhabricatorObjectQuery $query,
+    array $names) {
+
+    $id_map = array();
+    foreach ($names as $name) {
+      $id = (int)substr($name, 1);
+      $id_map[$id][] = $name;
+    }
+
+    $objects = id(new PhabricatorPasteQuery())
+      ->setViewer($query->getViewer())
+      ->withIDs(array_keys($id_map))
+      ->execute();
+
+    $results = array();
+    foreach ($objects as $id => $object) {
+      foreach (idx($id_map, $id, array()) as $name) {
+        $results[$name] = $object;
+      }
+    }
+
+    return $results;
+  }
+
+}

src/applications/paste/storage/PhabricatorPaste.php

@@ -26,7 +26,7 @@ final class PhabricatorPaste extends PhabricatorPasteDAO
 
   public function generatePHID() {
     return PhabricatorPHID::generateNewPHID(
-      PhabricatorPHIDConstants::PHID_TYPE_PSTE);
+      PhabricatorPastePHIDTypePaste::TYPECONST);
   }
 
   public function getCapabilities() {