4.5.1也是4.0和4.5的就地升级吗？(Is 4.5.1 also in-place upgrade of 4.0 and 4.5?)

 我不认为这是可能的， LIKE的左边部分应该是一个string_expression （在标准的JPA中）。 从规格： 
 
 
 
 4.6.9类似表达式 
 
 
 在条件表达式中使用比较运算符[NOT] LIKE的语法如下所示： 
 
 
string_expression [NOT] LIKE pattern_value [ESCAPE escape_character]
 
 
 string_expression必须有一个字符串值。 pattern_value是字符串文字或字符串值输入参数，其中下划线（_）代表任何单个字符，百分号（％）代表任何字符序列（包括空序列），所有其他字符代表为了自己。 可选的escape_character是单字符字符串文字或字符值输入参数（即char或Character ），用于转义pattern_value中下划线和百分号字符的特殊含义。 
 
 
 而enum_expression不是一个string_expression 。 
 
 以下工作虽然（使用枚举文字 ）： 
 
SELECT f 
  FROM Foo f 
 WHERE f.bar = com.acme.Bar.SOME_CONSTANT 
    OR f.bar = com.acme.Bar.SOME_OTHER_CONSTANT
 
 另一个选择是将bar栏实际存储为一个String （并且在getter / setter中进行一些转换并将其转换为enum）。 
 
 参考 
 
 
 
 JPA 1.0规范 
  
 
   
 第4.6.9节“像表达式” 
 
   
 第4.14节“BNF” 
 
  
 

I don't think it's possible, the left part of a LIKE is supposed to be a string_expression (in standard JPA). From the specification:
 
 
 
4.6.9 Like Expressions
 
 
The syntax for the use of the comparison operator [NOT] LIKE in a conditional expression is as follows:
 
 
string_expression [NOT] LIKE pattern_value [ESCAPE escape_character]
 
 
The string_expression must have a string value. The pattern_value is a string literal or a string-valued input parameter in which an underscore (_) stands for any single character, a percent (%) character stands for any sequence of characters (including the empty sequence), and all other characters stand for themselves. The optional escape_character is a single-character string literal or a character-valued input parameter (i.e., char or Character) and is used to escape the special meaning of the underscore and percent characters in pattern_value.
 
 
And an enum_expression is not a string_expression.
 
The following would work though (using enum literals):
 
SELECT f 
  FROM Foo f 
 WHERE f.bar = com.acme.Bar.SOME_CONSTANT 
    OR f.bar = com.acme.Bar.SOME_OTHER_CONSTANT
 
Another option would be to actually store the bar field as a String (and to do some conversion from and to an enum in the getter/setter).
 
Reference
 
 
 
JPA 1.0 Specification 
  
 
   
Section 4.6.9 "Like Expressions"
 
   
Section 4.14 "BNF"