net.ymate.platform.persistence.jdbc.query

Interface Func

public interface Func

数据库函数库(尝试!!! 暂未考虑不同数据库间的兼容问题)

Author:

刘镇 (suninformation@163.com) on 17/6/22 上午10:50

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	Func.Aggregate Aggregate (GROUP BY) Function Descriptions
static interface	Func.ControlFlow Control Flow Functions
static interface	Func.DateTime Date and Time Functions
static interface	Func.Math Mathematical Functions
static interface	Func.Operators Operators
static interface	Func.Strings String Functions

Field Summary

Fields

Modifier and Type	Field and Description
static Func.Aggregate	aggregate
static Func.ControlFlow	controlFlow
static Func.DateTime	dateTime
static Func.Math	math
static Func.Operators	operators
static Func.Strings	strings

Method Summary

Modifier and Type	Method and Description
static AbstractFunction	create() 构建自定义函数(无名)
static AbstractFunction	create(String funcName) 构建自定义函数
static IFunction	operate(String opt, String param) 操作符函数
static IFunction	operate(String paramOne, String opt, String paramTwo) 操作符函数

Field Detail

math

static final Func.Math math

strings

static final Func.Strings strings

aggregate

static final Func.Aggregate aggregate

dateTime

static final Func.DateTime dateTime

controlFlow

static final Func.ControlFlow controlFlow

operators

static final Func.Operators operators

Method Detail

create

static AbstractFunction create(String funcName)

构建自定义函数

Parameters:

funcName - 函数名称

Returns:

返回函数接口对象

create

static AbstractFunction create()

构建自定义函数(无名)

Returns:

返回函数接口对象

operate

static IFunction operate(String opt,
                         String param)

操作符函数

Parameters:

opt - 操作符号

param - 参数

Returns:

返回函数接口对象

operate

static IFunction operate(String paramOne,
                         String opt,
                         String paramTwo)

操作符函数

Parameters:

paramOne - 参数1

opt - 操作符号

paramTwo - 参数2

Returns:

返回函数接口对象