About char

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Bug: ClassCastException by retrieval

) {   this.sData = sData;   char[] ca = sData.toCharArray();   int iLen = ca.length;   Character[] la
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Error using query with MAX() function

I have a class that is persisting a Entity that holds remarks and a time. Then when I query for the latest remark I get a internal error when the remark is larger than 1966 chars. Here is a test class and entity that reproduces the problem on my system. @Entity @Table(name = "TestEntity", schema
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[ODB1] Chapter 7 - JDOQL Queries

+17f, ... double 3.14, 0d, 1e2D, -2., 5.04e+17, ... char 'x', '@', '\n', '\\', '\'', '\uFFFF ... can participate in comparisons as if they were primitive numeric types (byte, short, char, int, long ... types include numeric primitive types (byte, short, char, int, long, float, double), numeric wrapper
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[ODB1] Chapter 3 - Persistent Classes

are also persistent types: All the primitive types - boolean, byte, short, char, int, long, float and double
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[ODB1] Chapter 4 - JDO Metadata

, byte, short, char, int, long, float or double) embedded wrapper (Boolean, Byte, Short, Character