com.dynamic.sql.core.column.function.scalar.string

类 SubString

java.lang.Object

com.dynamic.sql.core.column.function.AbstractColumFunction

com.dynamic.sql.core.column.function.ColumnFunctionDecorator

com.dynamic.sql.core.column.function.scalar.string.SubString

所有已实现的接口:

ColumnArithmetic, Bindable, ColumFunction, SqlRenderable, TableFunction, Serializable

public class SubString
extends ColumnFunctionDecorator

另请参阅:

序列化表格

字段概要

从类继承的字段 com.dynamic.sql.core.column.function.ColumnFunctionDecorator

parameterBinder, value

从类继承的字段 com.dynamic.sql.core.column.function.AbstractColumFunction

delegateFunction

构造器概要

构造器

构造器和说明
SubString(AbstractColumFunction delegateFunction, int start, int length)
SubString(FieldFn<T,F> fn, int start, int length)
SubString(String tableAlias, FieldFn<T,F> fn, int start, int length)
SubString(String string, int start, int length)

方法概要

限定符和类型	方法和说明
String	render(RenderContext context) 根据给定的渲染上下文生成 SQL 字符串。

从类继承的方法 com.dynamic.sql.core.column.function.ColumnFunctionDecorator

appendArithmeticSql, getTableAlias, originColumn, parameterBinder

从类继承的方法 com.dynamic.sql.core.column.function.AbstractColumFunction

add, add, add, add, divide, divide, divide, divide, getAliasTableMap, getArithmetic, getDataSourceName, getDelegateFunction, multiply, multiply, multiply, multiply, setAliasTableMap, setArithmetic, setDataSourceName, subtract, subtract, subtract, subtract

从类继承的方法 java.lang.Object

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

从接口继承的方法 com.dynamic.sql.core.column.function.ColumFunction

setTableAlias

构造器详细资料

SubString

public SubString(AbstractColumFunction delegateFunction,
                 int start,
                 int length)

SubString

public SubString(FieldFn<T,F> fn,
                 int start,
                 int length)

SubString

public SubString(String tableAlias,
                 FieldFn<T,F> fn,
                 int start,
                 int length)

SubString

public SubString(String string,
                 int start,
                 int length)

方法详细资料

render

public String render(RenderContext context)

从接口复制的说明: SqlRenderable

根据给定的渲染上下文生成 SQL 字符串。

参数:

context - 渲染上下文，包含方言、别名、版本等信息

返回:

渲染后的 SQL 字符串