Examples of java.text.RuleBasedCollator$CollationSorter

java.text.RuleBasedCollator
Basic collation instruction (internal format) to build the series of collation elements. It contains an instruction which specifies the new state of the generator. The sequence of instruction should not contain RESET (it is used by {@link #mergeRules(int,java.lang.String,java.util.ArrayList,java.util.ArrayList)}) as a temporary state while merging two sets of instructions.

  private Collator createFromRules(String fileName, ResourceLoader loader) throws IOException {
    InputStream input = null;
    try {
     input = loader.openResource(fileName);
     String rules = toUTF8String(input);
     return new RuleBasedCollator(rules);
    } catch (ParseException e) {
      // invalid rules
      throw new IOException("ParseException thrown while parsing rules", e);
    } finally {
      IOUtils.closeWhileHandlingException(input);

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        doTest(comp);
    }




    public void testRuleComparator() {
        RuleBasedCollator comp = (RuleBasedCollator)RuleBasedCollator.getInstance();
        doTest(comp);
    }

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  private TestHarness harness;


  private void constructorTests()
  {
    harness.checkPoint("constructor rule parsing");
    RuleBasedCollator r;
    final String[] GOOD_RULES = {
      // Examples from the Sun javadocs
      "< a < b < c < d",
      ("< a,A< b,B< c,C< d,D< e,E< f,F< g,G< h,H< i,I< j,J < k,K< l,L< m,M" +
       "< n,N< o,O< p,P< q,Q< r,R< s,S< t,T < u,U< v,V< w,W< x,X< y,Y< z,Z " +
       "< \u00E5=a\u030A,\u00C5=A\u030A ;aa,AA< \u00E6,\u00C6< \u00F8,\u00D8"),
      ("=\u0301;\u0300;\u0302;\u0308;\u0327;\u0303;\u0304;\u0305" +
       ";\u0306;\u0307;\u0309;\u030A;\u030B;\u030C;\u030D;\u030E" +
       ";\u030F;\u0310;\u0311;\u0312< a , A ; ae, AE ; \u00e6 , \u00c6" +
       "< b , B < c, C < e, E & C < d, D & \u0300 ; \u0308 ; \u0302"),
      // Real collation rules
      EN_US_RULES, FR_CA_RULES,
      // Cases involving non-significant white-space
      "=A ", "=A\t", "=A\n", 
      "=A B", "=A\tB", "=A\nB", 
      "= A", "=\tA", "=\nA", 
      " =A", "\t=A", "\n=A",
      // Dodgy cases that JDKs accept
      " ",
      "='\n''\n'",
      "='\n'\n'\n'",
      // Dodgy cases with unbalanced quotes.  JDKs allow these (though a 
      // couple result in IndexOutOfBoundsExceptions).  However, the spec
      // does not say what they mean.
      "='", /* <- JDK 1.4.0 exception */ "=' ", "='=A", "='=A'", 
      "=''", "='' ","=''=A", "=''=A'", 
      "=''''", /* <- JDK 1.4.0 exception */ "=''''=A", "=''''=A'", 
    };
    
    for (int i = 0; i < GOOD_RULES.length; i++) {
      try {
  r = new RuleBasedCollator(GOOD_RULES[i]);
  harness.check(true);
      }
      catch (ParseException ex) {
  harness.debug(ex);
  harness.debug("unexpected ParseException (offset is " +
          ex.getErrorOffset() + ")");
  harness.check(false);
      }
      catch (Throwable ex) {
  harness.debug(ex);
  harness.check(false);
      }
    }


    try {
      r = new RuleBasedCollator(null);
      harness.check(false);
    }
    catch (ParseException ex) {
      harness.check(false);
    }
    catch (NullPointerException ex) {
      harness.check(true);
    }
    
    harness.checkPoint("constructor rule parsing errors");
    final String[] BAD_RULES = {
      // Empty rule list
      "", 
      // No relation
      "A",
      // No text following relation
      "=", "<", ";", ",", 
      // Special chars should be quoted
      "=\n", "=#", "==",
    };


    for (int i = 0; i < BAD_RULES.length; i++) {
      try {
  r = new RuleBasedCollator(BAD_RULES[i]);
  harness.check(false);
      }
      catch (ParseException ex) {
  harness.check(true);
      }

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      {"Z", "Z", "="},
      {"Abc", "aZbZc", ">"},
    };


    try {
      RuleBasedCollator r = new RuleBasedCollator(TEST_RULES);
      doComparisons(r, TESTS);
    }
    catch (ParseException ex) {
      harness.debug(ex);
      harness.fail("ignorable characters: ParseException (offset is " +

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  {"pqr", "xyz", "<"},
      },
    };


    try {
      RuleBasedCollator r = new RuleBasedCollator(TEST_RULES);
      for (int i = 0; i < TESTS.length; i++) {
  r.setStrength(i);
  doComparisons(r, TESTS[i]);
      }
    }
    catch (ParseException ex) {
      harness.debug(ex);

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  {"chat", "dog", "<"},
      },
    };
    
    try {
      RuleBasedCollator r = new RuleBasedCollator(OLD_SPANISH_RULES);
      for (int i = 0; i < TESTS.length; i++) {
  r.setStrength(i);
  doComparisons(r, TESTS[i]);
      }
    }
    catch (ParseException ex) {
      harness.debug(ex);

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  {"C\u00c6T", "CAB", ">"},
      },
    };
    
    try {
      RuleBasedCollator r = new RuleBasedCollator(OLD_ENGLISH_RULES);
      for (int i = 0; i < TESTS.length; i++) {
  r.setStrength(i);
  doComparisons(r, TESTS[i]);
      }
    }
    catch (ParseException ex) {
      harness.debug(ex);

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    String SimpleRule = "< a< b< c< d";
    
    boolean pass = false;
    try
      {
        RuleBasedCollator simpleRuleCollator =
          new RuleBasedCollator(SimpleRule);
        
        pass = (simpleRuleCollator.compare("abc", "ABC") < 0);
      }
    catch (ParseException e)
      {
        pass = false;
      }

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    this.harness.check(pass, "simple rule test");
  }
  
  private void orderComparision()
  {
    RuleBasedCollator c = (RuleBasedCollator)Collator.getInstance(Locale.US);
    CollationElementIterator iter = c.getCollationElementIterator("Foo");


    // given by the 1.5.0 jdk
    int [][] results = 
      {
       {5767169, 88, 0, 1},

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      // Used to get the collator as above, but this assumes that the
      // en_US locale's collation rules are reasonably complete.
      // Since the point of this class is test the iterator, it is
      // better to use a collator with hard-wired collation rules of
      // known quality.
      RuleBasedCollator en_USCollator = 
        new RuleBasedCollator(JDK_1_4_EN_US_RULES);


      CollationElementIterator iterator = 
        en_USCollator.getCollationElementIterator("abcdefg");


      // -------- methods -------- 
      checkOrder(iterator, 7, PRIMARY, "initial test");


      // reset()
      harness.checkPoint("reset()");
      iterator.reset();
      checkOrder(iterator, 7, PRIMARY, "initial test after reset()");


      // ------- check empty string --------
      iterator = en_USCollator.getCollationElementIterator("");
      harness.check (iterator.next(), CollationElementIterator.NULLORDER, 
         "next()");


      // ------- detailed checks of collation orders -------
      for (int i = 0; i < TEST_STRINGS.length; i++) {
  iterator = en_USCollator.getCollationElementIterator(TEST_STRINGS[i]);
  checkOrder(iterator, TEST_STRINGS[i].length(), TEST_ORDERS[i], 
       "test string #" + i);
      }


      // ------- detailed checks of collation equivalences -------

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