hibernate 中 SQLFunctionTemplate 类的翻译

org.hibernate.dialect.function
Class SQLFunctionTemplate

java.lang.Object
  org.hibernate.dialect.function.SQLFunctionTemplate

All Implemented Interfaces:

SQLFunction

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public class SQLFunctionTemplate

extends Object implements SQLFunction

Represents(描述) HQL functions that can have different representations(描述) in different SQL dialects. E.g. in HQL we can define function concat(?1, ?2) to concatenate(连接) two strings p1 and p2. Target SQL function will be dialect-specific, e.g. (?1 || ?2) for Oracle, concat(?1, ?2) for MySql, (?1 + ?2) for MS SQL. Each dialect will define a template as a string (exactly(恰好) like above) marking function parameters with '?' followed by parameter's index (first index is 1).

 

 

Version:

$Revision: 6608 $

Author:

Alexey Loubyansky