test/test_IndexDeletionPolicy.py

   1 # ====================================================================
   2 #   Licensed under the Apache License, Version 2.0 (the "License");
   3 #   you may not use this file except in compliance with the License.
   4 #   You may obtain a copy of the License at
   5 #
   6 #       http://www.apache.org/licenses/LICENSE-2.0
   7 #
   8 #   Unless required by applicable law or agreed to in writing, software
   9 #   distributed under the License is distributed on an "AS IS" BASIS,
  10 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  11 #   See the License for the specific language governing permissions and
  12 #   limitations under the License.
  13 # ====================================================================
  14
  15 from unittest import TestCase, main
  16 from lucene import *
  17
  18
  19 # Test reusableTokenStream, using ReusableAnalyzerBase:
  20 class MyDeletionPolicy(PythonIndexDeletionPolicy):
  21
  22     onInitCalled = False
  23     onCommitCalled = False
  24
  25     def onInit(self, commits):
  26       self.onInitCalled = True
  27
  28     def onCommit(self, commits):
  29       self.onCommitCalled = True
  30
  31
  32 class IndexDeletionPolicyTestCase(TestCase):
  33
  34     def testIndexDeletionPolicy(self):
  35
  36         dir = RAMDirectory()
  37         config = IndexWriterConfig(Version.LUCENE_CURRENT,
  38                                    WhitespaceAnalyzer())
  39         policy = MyDeletionPolicy()
  40         config.setIndexDeletionPolicy(policy)
  41         writer = IndexWriter(dir, config)
  42         # no commits exist in the index yet
  43         self.assertFalse(policy.onInitCalled)
  44         # we haven't called commit yet
  45         self.assertFalse(policy.onCommitCalled)
  46         doc = Document()
  47         writer.addDocument(doc)
  48         writer.commit()
  49
  50         # now we called commit
  51         self.assertTrue(policy.onCommitCalled)
  52
  53         # external IR sees 1 commit:
  54         self.assertEquals(1, IndexReader.listCommits(dir).size())
  55
  56         # commit again:
  57         writer.addDocument(doc)
  58         writer.commit()
  59
  60         # external IR sees 2 commits:
  61         self.assertEquals(2, IndexReader.listCommits(dir).size())
  62
  63         writer.close()
  64
  65         # open same index, make sure both commits survived:
  66         config = IndexWriterConfig(Version.LUCENE_CURRENT,
  67                                    WhitespaceAnalyzer())
  68         policy = MyDeletionPolicy()
  69         config.setIndexDeletionPolicy(policy)
  70         writer = IndexWriter(dir, config)
  71         self.assertTrue(policy.onInitCalled)
  72         self.assertFalse(policy.onCommitCalled)
  73         self.assertEquals(2, IndexReader.listCommits(dir).size())
  74         writer.close()
  75
  76         self.assertEquals(2, IndexReader.listCommits(dir).size())
  77
  78 if __name__ == "__main__":
  79     import sys, lucene
  80     lucene.initVM()
  81     if '-loop' in sys.argv:
  82         sys.argv.remove('-loop')
  83         while True:
  84             try:
  85                 main()
  86             except:
  87                 pass
  88     else:
  89          main()