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JPA规范JPQL生成规则可能存在错误？_Jpa_Jpql - Fatal编程技术网
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JPA规范JPQL生成规则可能存在错误？

jpa

JPA规范JPQL生成规则可能存在错误？,jpa,jpql,Jpa,Jpql,JPQL上的JPA规范： single_valued_path_expression ::= qualified_identification_variable | TREAT(qualified_identification_variable AS subtype) | state_field_path_expression | single_valued_object_path_expression 合格的_标识_变量应为上述规则中的一般_标识_变量。这是一

JPQL上的JPA规范：

single_valued_path_expression ::=
    qualified_identification_variable |
    TREAT(qualified_identification_variable AS subtype) |
    state_field_path_expression |
    single_valued_object_path_expression
合格的_标识_变量应为上述规则中的一般_标识_变量。这是一个错误吗

qualified_identification_variable :: =
    map_field_identification_variable |
    ENTRY(identification_variable)

general_identification_variable ::=
    identification_variable |
    map_field_identification_variable
你在哪里找到这个规范的？jpa规范2.2