com.mybatisflex.core.query

Class FunctionQueryColumn

java.lang.Object

com.mybatisflex.core.query.QueryColumn

com.mybatisflex.core.query.FunctionQueryColumn

All Implemented Interfaces:

CloneSupport<QueryColumn>, Conditional<QueryCondition>, HasParamsColumn, Serializable, Cloneable

public class FunctionQueryColumn
extends QueryColumn
implements HasParamsColumn

数据库 聚合函数，例如 count(id) ，max(account.age) 等等

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected List<QueryColumn>	columns
protected String	fnName

Fields inherited from class com.mybatisflex.core.query.QueryColumn

alias, name, table

Constructor Summary

Constructors

Constructor and Description
FunctionQueryColumn(String fnName)
FunctionQueryColumn(String fnName, QueryColumn... columns)
FunctionQueryColumn(String fnName, String... columns)

Method Summary

Modifier and Type	Method and Description
FunctionQueryColumn	clone() 改写 Object.clone() 方法。
List<QueryColumn>	getColumns()
String	getFnName()
Object[]	getParamValues()
void	setColumns(List<QueryColumn> columns)
void	setFnName(String fnName)
protected String	toConditionSql(List<QueryTable> queryTables, IDialect dialect) 生成列用于构建查询条件的 SQL 语句。
String	toSelectSql(List<QueryTable> queryTables, IDialect dialect) 生成列用于构建查询列的 SQL 语句。
String	toString()

Methods inherited from class com.mybatisflex.core.query.QueryColumn

add, add, as, as, as, asc, between, between, between, between, between, between, desc, divide, divide, eq, eq, eq, eq, ge, ge, ge, ge, getAlias, getName, getTable, gt, gt, gt, gt, in, in, in, in, in, in, in, in, in, in, in, isNotNull, isNull, le, le, le, le, like, like, like, like, likeLeft, likeLeft, likeLeft, likeLeft, likeRaw, likeRaw, likeRaw, likeRaw, likeRight, likeRight, likeRight, likeRight, lt, lt, lt, lt, multiply, multiply, ne, ne, ne, ne, notBetween, notBetween, notBetween, notBetween, notBetween, notBetween, notIn, notIn, notIn, notIn, notIn, notIn, notIn, notIn, notIn, notIn, notIn, notLike, notLike, notLike, notLike, notLikeLeft, notLikeLeft, notLikeLeft, notLikeLeft, notLikeRaw, notLikeRaw, notLikeRaw, notLikeRaw, notLikeRight, notLikeRight, notLikeRight, notLikeRight, setAlias, setName, setTable, subtract, subtract

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.mybatisflex.core.query.Conditional

isNotNull, isNotNull, isNull, isNull

Field Detail

fnName

protected String fnName

columns

protected List<QueryColumn> columns

Constructor Detail

FunctionQueryColumn

public FunctionQueryColumn(String fnName)

FunctionQueryColumn

public FunctionQueryColumn(String fnName,
                           String... columns)

FunctionQueryColumn

public FunctionQueryColumn(String fnName,
                           QueryColumn... columns)

Method Detail

getFnName

public String getFnName()

setFnName

public void setFnName(String fnName)

getColumns

public List<QueryColumn> getColumns()

setColumns

public void setColumns(List<QueryColumn> columns)

getParamValues

public Object[] getParamValues()

Specified by:

getParamValues in interface HasParamsColumn

toSelectSql

public String toSelectSql(List<QueryTable> queryTables,
                          IDialect dialect)

Description copied from class: QueryColumn

生成列用于构建查询列的 SQL 语句。

Overrides:

toSelectSql in class QueryColumn

Parameters:

queryTables - 查询表

dialect - 方言

Returns:

SQL 语句

toConditionSql

protected String toConditionSql(List<QueryTable> queryTables,
                                IDialect dialect)

Description copied from class: QueryColumn

生成列用于构建查询条件的 SQL 语句。

Overrides:

toConditionSql in class QueryColumn

Parameters:

queryTables - 查询表

dialect - 方言

Returns:

SQL 语句

toString

public String toString()

Overrides:

toString in class QueryColumn

clone

public FunctionQueryColumn clone()

Description copied from interface: CloneSupport

改写 Object.clone() 方法。

Specified by:

clone in interface CloneSupport<QueryColumn>

Overrides:

clone in class QueryColumn

Returns:

克隆对象