程序包 org.hibernate.dialect.function

类 NoArgSQLFunction

java.lang.Object

org.hibernate.dialect.function.NoArgSQLFunction

所有已实现的接口:

SQLFunction

直接已知子类:

StaticPrecisionFspTimestampFunction

public class NoArgSQLFunction
extends Object
implements SQLFunction

A function which takes no arguments

作者:

Michi

构造器概要

构造器

构造器	说明
NoArgSQLFunction(String name, Type returnType)	Constructs a NoArgSQLFunction
NoArgSQLFunction(String name, Type returnType, boolean hasParenthesesIfNoArguments)	Constructs a NoArgSQLFunction

方法概要

修饰符和类型	方法	说明
protected String	getName()
Type	getReturnType(Type argumentType, Mapping mapping)	The return type of the function.
boolean	hasArguments()	Does this function have any arguments?
boolean	hasParenthesesIfNoArguments()	If there are no arguments, are parentheses required?
String	render(Type argumentType, List args, SessionFactoryImplementor factory)	Render the function call as SQL fragment.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

NoArgSQLFunction

public NoArgSQLFunction(String name,
                        Type returnType)

Constructs a NoArgSQLFunction

参数:

name - The function name

returnType - The function return type

NoArgSQLFunction

public NoArgSQLFunction(String name,
                        Type returnType,
                        boolean hasParenthesesIfNoArguments)

Constructs a NoArgSQLFunction

参数:

name - The function name

returnType - The function return type

hasParenthesesIfNoArguments - Does the function call need parenthesis if there are no arguments?

方法详细资料

hasArguments

public boolean hasArguments()

从接口复制的说明: SQLFunction

Does this function have any arguments?

指定者:

hasArguments 在接口中 SQLFunction

返回:

True if the function expects to have parameters; false otherwise.

hasParenthesesIfNoArguments

public boolean hasParenthesesIfNoArguments()

从接口复制的说明: SQLFunction

If there are no arguments, are parentheses required?

指定者:

hasParenthesesIfNoArguments 在接口中 SQLFunction

返回:

True if a no-arg call of this function requires parentheses.

getReturnType

public Type getReturnType(Type argumentType,
                          Mapping mapping)
                   throws QueryException

从接口复制的说明: SQLFunction

The return type of the function. May be either a concrete type which is preset, or variable depending upon the type of the first function argument.

Note, the 'firstArgumentType' parameter should match the one passed into SQLFunction.render(org.hibernate.type.Type, java.util.List, org.hibernate.engine.spi.SessionFactoryImplementor)

指定者:

getReturnType 在接口中 SQLFunction

参数:

argumentType - The type of the first argument

mapping - The mapping source.

返回:

The type to be expected as a return.

抛出:

QueryException - Indicates an issue resolving the return type.

render

public String render(Type argumentType,
                     List args,
                     SessionFactoryImplementor factory)
              throws QueryException

从接口复制的说明: SQLFunction

Render the function call as SQL fragment.

Note, the 'firstArgumentType' parameter should match the one passed into SQLFunction.getReturnType(org.hibernate.type.Type, org.hibernate.engine.spi.Mapping)

指定者:

render 在接口中 SQLFunction

参数:

argumentType - The type of the first argument

args - The function arguments

factory - The SessionFactory

返回:

The rendered function call

抛出:

QueryException - Indicates a problem rendering the function call.

getName

protected String getName()