Examples of org.exoplatform.services.document.diff.DiffService

Package org.exoplatform.services.document.diff

Examples of org.exoplatform.services.document.diff.DiffService

org.exoplatform.services.document.diff.DiffService
Implements a differencing engine that works on arrays of {@link Object Object}.
Within this library, the word text means a unit of information subject to version control.
Text is represented as Object[] because the diff engine is capable of handling more than plain ascci. In fact, arrays of any type that implements {@link java.lang.Object#hashCode hashCode()} and{@link java.lang.Object#equals equals()} correctly can be subject todifferencing using this library.

This library provides a framework in which different differencing algorithms may be used. If no algorithm is specififed, a default algorithm is used.


   protected abstract DiffAlgorithm getAlgo();


   public void testCompare()
   {
      DiffService diffService = new DiffServiceImpl(getAlgo());
      assertTrue(!diffService.compare(original, empty));
      assertTrue(!diffService.compare(empty, original));
      assertTrue(diffService.compare(empty, empty));
      assertTrue(diffService.compare(original, original));
   }

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   public void testEmptySequences() throws Exception
   {
      String[] emptyOrig = {};
      String[] emptyRev = {};
      DiffService diffService = new DiffServiceImpl(getAlgo());
      Revision revision = diffService.diff(emptyOrig, emptyRev);


      assertEquals("revision size is not zero", 0, revision.size());
   }

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   public void testOriginalEmpty() throws Exception
   {
      String[] emptyOrig = {};
      String[] rev = {"1", "2", "3"};
      DiffService diffService = new DiffServiceImpl(getAlgo());
      Revision revision = diffService.diff(emptyOrig, rev);


      assertEquals("revision size should be one", 1, revision.size());
      assertTrue(revision.getDelta(0) instanceof AddDelta);
   }

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   public void testRevisedEmpty() throws Exception
   {
      String[] orig = {"1", "2", "3"};
      String[] emptyRev = {};
      DiffService diffService = new DiffServiceImpl(getAlgo());
      Revision revision = diffService.diff(orig, emptyRev);


      assertEquals("revision size should be one", 1, revision.size());
      assertTrue(revision.getDelta(0) instanceof DeleteDelta);
   }

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      assertTrue(revision.getDelta(0) instanceof DeleteDelta);
   }


   public void testDeleteAll() throws Exception
   {
      DiffService diffService = new DiffServiceImpl(getAlgo());
      Revision revision = diffService.diff(original, empty);
      assertEquals(1, revision.size());
      assertTrue(revision.getDelta(0) instanceof DeleteDelta);
      assertTrue(diffService.compare(revision.patch(original), empty));
   }

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      assertTrue(diffService.compare(revision.patch(original), empty));
   }


   public void testTwoDeletes() throws Exception
   {
      DiffService diffService = new DiffServiceImpl(getAlgo());
      Revision revision = diffService.diff(original, rev1);
      assertEquals(2, revision.size());
      assertTrue(revision.getDelta(0) instanceof DeleteDelta);
      assertTrue(revision.getDelta(1) instanceof DeleteDelta);
      assertTrue(diffService.compare(revision.patch(original), rev1));
      assertEquals("3d2" + DiffService.NL + "< [3] three" + DiffService.NL + "9d7" + DiffService.NL + "< [9] nine"
         + DiffService.NL, revision.toString());
   }

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         + DiffService.NL, revision.toString());
   }


   public void testChangeAtTheEnd() throws Exception
   {
      DiffService diffService = new DiffServiceImpl(getAlgo());
      Revision revision = diffService.diff(original, rev2);
      assertEquals(1, revision.size());
      assertTrue(revision.getDelta(0) instanceof ChangeDelta);
      assertTrue(diffService.compare(revision.patch(original), rev2));
      assertEquals("d7 3" + DiffService.NL + "a9 2" + DiffService.NL + "[7] seven revised" + DiffService.NL
         + "[8] eight revised" + DiffService.NL, revision.toRCSString());
   }

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   public void testPatchFailed() throws Exception
   {
      try
      {
         DiffService diffService = new DiffServiceImpl(getAlgo());
         Revision revision = diffService.diff(original, rev2);
         assertTrue(!diffService.compare(revision.patch(rev1), rev2));
         fail("Exception not thrown");
      }
      catch (Exception e)
      {
      }

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   {
      Object[] orig = new String[]{"[1] one", "[2] two", "[3] three", "[4] four", "[5] five", "[6] six"};


      Object[] rev = new String[]{"[3] three", "[1] one", "[5] five", "[2] two", "[6] six", "[4] four"};


      DiffService diffService = new DiffServiceImpl(getAlgo());
      Revision revision = diffService.diff(orig, rev);
      Object[] patched = revision.patch(orig);
      assertTrue(diffService.compare(patched, rev));
   }

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      Object[] orig = new String[]{"[1] one", "[2] two", "[3] three", "[4] four", "[5] five", "[6] six"};


      Object[] rev =
         new String[]{"one revised", "two revised", "[2] two", "[3] three", "five revised", "six revised", "[5] five"};


      DiffService diffService = new DiffServiceImpl(getAlgo());
      Revision revision = diffService.diff(orig, rev);
      Object[] patched = revision.patch(orig);
      assertTrue(diffService.compare(patched, rev));
   }

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org.exoplatform.services.document.diff.test.DiffTest

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