Examples of java.text.Collator

java.text.Collator
are two strings in the default locale Collator myCollator = Collator.getInstance(); if( myCollator.compare("abc", "ABC") < 0 ) System.out.println("abc is less than ABC"); else System.out.println("abc is greater than or equal to ABC");
You can set a Collator's strength property to determine the level of difference considered significant in comparisons. Four strengths are provided: PRIMARY, SECONDARY, TERTIARY, and IDENTICAL. The exact assignment of strengths to language features is locale dependant. For example, in Czech, "e" and "f" are considered primary differences, while "e" and "ě" are secondary differences, "e" and "E" are tertiary differences and "e" and "e" are identical. The following shows how both case and accents could be ignored for US English.
```
 //Get the Collator for US English and set its strength to PRIMARY Collator usCollator = Collator.getInstance(Locale.US); usCollator.setStrength(Collator.PRIMARY); if( usCollator.compare("abc", "ABC") == 0 ) { System.out.println("Strings are equivalent"); } 
```
For comparing Strings exactly once, the compare method provides the best performance. When sorting a list of Strings however, it is generally necessary to compare each String multiple times. In this case, CollationKeys provide better performance. The CollationKey class converts a String to a series of bits that can be compared bitwise against other CollationKeys. A CollationKey is created by a Collator object for a given String.
Note: CollationKeys from different Collators can not be compared. See the class description for {@link CollationKey}for an example using CollationKeys. @see RuleBasedCollator @see CollationKey @see CollationElementIterator @see Locale @version 1.46, 07/23/06 @author Helena Shih, Laura Werner, Richard Gillam


    // Neither Java 1.4.2 nor 1.5.0 has Farsi Locale collation available in
    // RuleBasedCollator. However, the Arabic Locale seems to order the
    // Farsi
    // characters properly.
    Collator c = Collator.getInstance(new Locale("ar"));
    qp.setRangeCollator(c);


    // Unicode order would include U+0633 in [ U+062F - U+0698 ], but Farsi
    // orders the U+0698 character before the U+0633 character, so the
    // single

View Full Code Here

    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "content", new WhitespaceAnalyzer(TEST_VERSION_CURRENT));


    // Neither Java 1.4.2 nor 1.5.0 has Farsi Locale collation available in
    // RuleBasedCollator.  However, the Arabic Locale seems to order the Farsi
    // characters properly.
    Collator c = Collator.getInstance(new Locale("ar"));
    qp.setRangeCollator(c);


    // Unicode order would include U+0633 in [ U+062F - U+0698 ], but Farsi
    // orders the U+0698 character before the U+0633 character, so the single
    // index Term below should NOT be returned by a ConstantScoreRangeQuery

View Full Code Here


  public void testFarsi() throws Exception {
    // Neither Java 1.4.2 nor 1.5.0 has Farsi Locale collation available in
    // RuleBasedCollator.  However, the Arabic Locale seems to order the Farsi
    // characters properly.
    Collator collator = Collator.getInstance(new Locale("ar"));
    Query query = new TermRangeQuery("content", "\u062F", "\u0698", true, true, collator);
    // Unicode order would include U+0633 in [ U+062F - U+0698 ], but Farsi
    // orders the U+0698 character before the U+0633 character, so the single
    // index Term below should NOT be returned by a TermRangeQuery with a Farsi
    // Collator (or an Arabic one for the case when Farsi is not supported).

View Full Code Here

    assertEquals("The index Term should be included.", 1, hits.length);
    searcher.close();
  }
  
  public void testDanish() throws Exception {
    Collator collator = Collator.getInstance(new Locale("da", "dk"));
    // Danish collation orders the words below in the given order (example taken
    // from TestSort.testInternationalSort() ).
    String[] words = { "H\u00D8T", "H\u00C5T", "MAND" };
    Query query = new TermRangeQuery("content", "H\u00D8T", "MAND", false, false, collator);

View Full Code Here

    QueryParser qp = new QueryParser("content", new WhitespaceAnalyzer());


    // Neither Java 1.4.2 nor 1.5.0 has Farsi Locale collation available in
    // RuleBasedCollator.  However, the Arabic Locale seems to order the Farsi
    // characters properly.
    Collator c = Collator.getInstance(new Locale("ar"));
    qp.setRangeCollator(c);


    // Unicode order would include U+0633 in [ U+062F - U+0698 ], but Farsi
    // orders the U+0698 character before the U+0633 character, so the single
    // index Term below should NOT be returned by a ConstantScoreRangeQuery

View Full Code Here

  }
  
  public void testThreadSafe() throws Exception {
    int iters = 20 * RANDOM_MULTIPLIER;
    for (int i = 0; i < iters; i++) {
      Collator collator = Collator.getInstance(Locale.GERMAN);
      collator.setStrength(Collator.PRIMARY);
      assertThreadSafe(new CollationKeyAnalyzer(collator));
    }
  }

View Full Code Here

        "data", "pr*t?j")));
  }


  @Test
  public void testBasicsRngCollating() throws IOException {
    Collator c = Collator.getInstance(Locale.ENGLISH);
    QueryUtils.check(csrq("data", "1", "6", T, T, c));
    QueryUtils.check(csrq("data", "A", "Z", T, T, c));
    QueryUtils.checkUnequal(csrq("data", "1", "6", T, T, c), csrq("data", "A",
        "Z", T, T, c));
  }

View Full Code Here


    assertEquals("num of docs", numDocs, 1 + maxId - minId);


    ScoreDoc[] result;


    Collator c = Collator.getInstance(Locale.ENGLISH);


    // test id, bounded on both ends


    result = search.search(csrq("id", minIP, maxIP, T, T, c), null, numDocs).scoreDocs;
    assertEquals("find all", numDocs, result.length);

View Full Code Here


    assertEquals("num of docs", numDocs, 1 + maxId - minId);


    ScoreDoc[] result;


    Collator c = Collator.getInstance(Locale.ENGLISH);


    // test extremes, bounded on both ends


    result = search.search(csrq("rand", minRP, maxRP, T, T, c), null, numDocs).scoreDocs;
    assertEquals("find all", numDocs, result.length);

View Full Code Here

    IndexSearcher search = newSearcher(reader);


    // Neither Java 1.4.2 nor 1.5.0 has Farsi Locale collation available in
    // RuleBasedCollator. However, the Arabic Locale seems to order the Farsi
    // characters properly.
    Collator c = Collator.getInstance(new Locale("ar"));


    // Unicode order would include U+0633 in [ U+062F - U+0698 ], but Farsi
    // orders the U+0698 character before the U+0633 character, so the single
    // index Term below should NOT be returned by a ConstantScoreRangeQuery
    // with a Farsi Collator (or an Arabic one for the case when Farsi is

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of java.text.Collator

ariba.util.formatter.StringFormatter

br.com.visualmidia.tools.MergeSortAlgorithm

com.ecyrd.jspwiki.auth.PrincipalComparator

com.ecyrd.jspwiki.plugin.AbstractReferralPlugin

com.eteks.furniturelibraryeditor.swing.FurnitureLibraryTable$FurnitureLibraryTableModel

com.eteks.sweethome3d.junit.CatalogTreeTest

com.google.enterprise.connector.db.DBTestBase

com.google.enterprise.connector.db.DocIdUtilTest

com.google.enterprise.connector.sharepoint.client.SiteDataHelper

com.google.enterprise.connector.sharepoint.client.UserProfile2003Helper

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.