com.dynamic.sql.core.column.function

类 ColumnFunctionDecorator

java.lang.Object

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

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

所有已实现的接口:

ColumnArithmetic, ColumFunction, Serializable

直接已知子类:

Abs, AsBinary, AsText, Avg, CaseWhen, Ceiling, Contains, Count, DateFormat, DenseRank, Distance, DistanceSphere, Distinct, Floor, JsonExtract, JsonUnquote, Latitude, Length, Longitude, Max, Md5, Min, Mod, Now, Rank, Round, RowNumber, SRID, StdDev, SubString, Sum, Truncate, Upper, Variance

public abstract class ColumnFunctionDecorator
extends AbstractColumFunction
implements Serializable

另请参阅:

序列化表格

字段概要

字段

限定符和类型	字段和说明
protected ParameterBinder	parameterBinder
protected Integer	value

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

aliasTableMap, dataSourceName, delegateFunction, sqlDialect, version

构造器概要

构造器

构造器和说明
ColumnFunctionDecorator()
ColumnFunctionDecorator(AbstractColumFunction delegateFunction)
ColumnFunctionDecorator(FieldFn<T,F> fn)
ColumnFunctionDecorator(int value)
ColumnFunctionDecorator(String tableAlias, FieldFn<T,F> fn)
ColumnFunctionDecorator(String tableAlias, String columnName)

方法概要

限定符和类型	方法和说明
protected String	appendArithmeticSql(SqlDialect sqlDialect, Version version) 如果当前列列函数支持数学运算，则应追加此方法。
Fn<?,?>	getOriginColumnFn()
ParameterBinder	getParameterBinder()
String	getTableAlias()

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, setSqlDialect, setVersion, 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

getFunctionToString, setTableAlias

字段详细资料

value

protected Integer value

parameterBinder

protected ParameterBinder parameterBinder

构造器详细资料

ColumnFunctionDecorator

public ColumnFunctionDecorator()

ColumnFunctionDecorator

public ColumnFunctionDecorator(AbstractColumFunction delegateFunction)

ColumnFunctionDecorator

public ColumnFunctionDecorator(FieldFn<T,F> fn)

ColumnFunctionDecorator

public ColumnFunctionDecorator(String tableAlias,
                               FieldFn<T,F> fn)

ColumnFunctionDecorator

public ColumnFunctionDecorator(String tableAlias,
                               String columnName)

ColumnFunctionDecorator

public ColumnFunctionDecorator(int value)

方法详细资料

getOriginColumnFn

public Fn<?,?> getOriginColumnFn()

指定者:

getOriginColumnFn 在接口中 ColumFunction

getParameterBinder

public ParameterBinder getParameterBinder()

指定者:

getParameterBinder 在接口中 ColumFunction

getTableAlias

public String getTableAlias()

指定者:

getTableAlias 在接口中 ColumFunction

appendArithmeticSql

protected String appendArithmeticSql(SqlDialect sqlDialect,
                                     Version version)

如果当前列列函数支持数学运算，则应追加此方法。

参数:

sqlDialect - 数据库类型

version - 版本号

返回:

常规加减乘除运算后的结果