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From "Mamta A. Satoor (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-2967) Single character does not match high value unicode character with collation TERRITORY_BASED
Date Fri, 14 Sep 2007 20:46:32 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12527628
] 

Mamta A. Satoor commented on DERBY-2967:
----------------------------------------

The patch submitted by me will not work on Sun's jdks (I have tested Sun jdk142 and jdk15)
because of the issues found with next() and previous() calls on CollationElementIterator with
Sun's jdks (more info about this can be found at http://www.nabble.com/Question-about-next%28%29-and-previous%28%29-on-CollationElementIterator.-tf4418042.html#a12601408)

> Single character does not match high value unicode character with collation TERRITORY_BASED
> -------------------------------------------------------------------------------------------
>
>                 Key: DERBY-2967
>                 URL: https://issues.apache.org/jira/browse/DERBY-2967
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.4.0.0
>            Reporter: Kathey Marsden
>            Assignee: Mamta A. Satoor
>         Attachments: step1_iteratorbased_Sep1507_diff.txt, step1_iteratorbased_Sep1507_stat.txt,
temp_diff.txt, temp_stat.txt, TestFrench.java, TestNorway.java
>
>
> With TERRITORY_BASED collation '_' does not match  the character \uFA2D.  It is the same
for english or norwegian. FOR collation UCS_BASIC it matches fine.  Could you tell me if this
is a bug?
> Here is a program to reproduce.
> import java.sql.*;
> public class HighCharacter {
>    public static void main(String args[]) throws Exception
>    {
>    System.out.println("\n Territory no_NO");
>    Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
>    Connection conn = DriverManager.getConnection("jdbc:derby:nordb;create=true;territory=no_NO;collation=TERRITORY_BASED");
>    testLikeWithHighestValidCharacter(conn);
>    conn.close();
>    System.out.println("\n Territory en_US");
>    conn = DriverManager.getConnection("jdbc:derby:endb;create=true;territory=en_US;collation=TERRITORY_BASED");
>    testLikeWithHighestValidCharacter(conn);
>    conn.close();
>    System.out.println("\n Collation USC_BASIC");
>    conn = DriverManager.getConnection("jdbc:derby:basicdb;create=true");
>    testLikeWithHighestValidCharacter(conn);
>    }
> public static  void testLikeWithHighestValidCharacter(Connection conn) throws SQLException
{
>    Statement stmt = conn.createStatement();
>    try {
>    stmt.executeUpdate("drop table t1");
>    }catch (SQLException se)
>    {// drop failure ok.
>    }
>    stmt.executeUpdate("create table t1(c11 int)");
>    stmt.executeUpdate("insert into t1 values 1");
>  
>    // \uFA2D - the highest valid character according to
>    // Character.isDefined() of JDK 1.4;
>    PreparedStatement ps =
>    conn.prepareStatement("select 1 from t1 where '\uFA2D' like ?");
>      String[] match = { "%", "_", "\uFA2D" };
>    for (int i = 0; i < match.length; i++) {
>    System.out.println("select 1 from t1 where '\\uFA2D' like " + match[i]);
>    ps.setString(1, match[i]);
>    ResultSet rs = ps.executeQuery();
>    if( rs.next() && rs.getString(1).equals("1"))
>        System.out.println("PASS");
>    else          System.out.println("FAIL: no match");
>    rs.close();
>    }
>   }
> }
> Mamta made some comments on this issue in the following thread:
> http://www.nabble.com/Single-character-does-not-match-high-value-unicode-character-with-collation-TERRITORY_BASED.-Is-this-a-bug-tf4118767.html

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