程序包 com.baomidou.mybatisplus.core.conditions

类 AbstractLambdaWrapper<T,Children extends AbstractLambdaWrapper<T,Children>>

java.lang.Object

com.baomidou.mybatisplus.core.conditions.Wrapper<T>

com.baomidou.mybatisplus.core.conditions.AbstractWrapper<T,SFunction<T,?>,Children>

com.baomidou.mybatisplus.core.conditions.AbstractLambdaWrapper<T,Children>

所有已实现的接口:

Compare<Children,SFunction<T,?>>, Func<Children,SFunction<T,?>>, Join<Children>, Nested<Children,Children>, ISqlSegment, Serializable

直接已知子类:

LambdaQueryWrapper, LambdaUpdateWrapper

public abstract class AbstractLambdaWrapper<T,Children extends AbstractLambdaWrapper<T,Children>>
extends AbstractWrapper<T,SFunction<T,?>,Children>

Lambda 语法使用 Wrapper

统一处理解析 lambda 获取 column

从以下版本开始:

2017-05-26

作者:

hubin miemie HCL

另请参阅:

• 序列化表格

嵌套类概要

从类继承的嵌套类/接口 com.baomidou.mybatisplus.core.conditions.AbstractWrapper

AbstractWrapper.DoSomething

字段概要

从类继承的字段 com.baomidou.mybatisplus.core.conditions.AbstractWrapper

expression, lastSql, paramAlias, paramNameSeq, paramNameValuePairs, sqlComment, sqlFirst, typedThis

构造器概要

构造器

构造器	说明
AbstractLambdaWrapper()

方法概要

修饰符和类型	方法	说明
protected final String	columnsToString(boolean onlyColumn, SFunction<T,?>... columns)
protected final String	columnsToString(boolean onlyColumn, List<SFunction<T,?>> columns)
protected final String	columnsToString(SFunction<T,?>... columns)	获取 columnNames
protected String	columnToString(SFunction<T,?> column)	获取 columnName
protected String	columnToString(SFunction<T,?> column, boolean onlyColumn)
protected ColumnCache	getColumnCache(SFunction<T,?> column)	获取 SerializedLambda 对应的列信息，从 lambda 表达式中推测实体类
final Children	groupBy(boolean condition, SFunction<T,?> column, SFunction<T,?>... columns)	分组：GROUP BY 字段, ...
Children	groupBy(boolean condition, SFunction<T,?> column, List<SFunction<T,?>> columns)	分组：GROUP BY 字段, ...
final Children	groupBy(SFunction<T,?> column, SFunction<T,?>... columns)	分组：GROUP BY 字段, ...
final Children	orderBy(boolean condition, boolean isAsc, SFunction<T,?> column, SFunction<T,?>... columns)	排序：ORDER BY 字段, ...
final Children	orderByAsc(boolean condition, SFunction<T,?> column, SFunction<T,?>... columns)	排序：ORDER BY 字段, ...
final Children	orderByAsc(SFunction<T,?> column, SFunction<T,?>... columns)	排序：ORDER BY 字段, ...
final Children	orderByDesc(boolean condition, SFunction<T,?> column, SFunction<T,?>... columns)	排序：ORDER BY 字段, ...
final Children	orderByDesc(SFunction<T,?> column, SFunction<T,?>... columns)	排序：ORDER BY 字段, ...

从类继承的方法 com.baomidou.mybatisplus.core.conditions.AbstractWrapper

addCondition, addNestedCondition, allEq, allEq, and, and, appendSqlSegments, apply, between, clear, clone, columnsToString, columnToSqlSegment, comment, doGroupBy, doOrderBy, eq, eqSql, exists, first, formatParam, formatSqlMaybeWithParam, func, ge, geSql, getEntity, getEntityClass, getExpression, getParamAlias, getParamNameValuePairs, getSqlComment, getSqlFirst, getSqlSegment, groupBy, groupBy, gt, gtSql, having, in, in, inExpression, inExpression, initNeed, inSql, instance, isNotNull, isNull, isUseAnnotationOrderBy, last, le, leSql, like, likeLeft, likeRight, likeValue, lt, ltSql, maybeDo, ne, nested, not, not, notBetween, notExists, notIn, notIn, notInSql, notLike, notLikeLeft, notLikeRight, or, or, orderBy, orderBy, orderBy, setEntity, setEntityClass, setParamAlias

从类继承的方法 com.baomidou.mybatisplus.core.conditions.Wrapper

getCustomSqlSegment, getSqlSelect, getSqlSet, getTargetSql, isEmptyOfEntity, isEmptyOfNormal, isEmptyOfWhere, isNonEmptyOfEntity, isNonEmptyOfNormal, isNonEmptyOfWhere, nonEmptyOfEntity, nonEmptyOfNormal, nonEmptyOfWhere

从类继承的方法 java.lang.Object

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

从接口继承的方法 com.baomidou.mybatisplus.core.conditions.interfaces.Compare

allEq, allEq, allEq, allEq, between, eq, ge, gt, le, like, likeLeft, likeRight, lt, ne, notBetween, notLike, notLikeLeft, notLikeRight

从接口继承的方法 com.baomidou.mybatisplus.core.conditions.interfaces.Func

eqSql, func, geSql, groupBy, groupBy, gtSql, having, in, in, inSql, isNotNull, isNull, leSql, ltSql, notIn, notIn, notInSql, orderByAsc, orderByAsc, orderByAsc, orderByAsc, orderByAsc, orderByDesc, orderByDesc, orderByDesc, orderByDesc, orderByDesc

从接口继承的方法 com.baomidou.mybatisplus.core.conditions.interfaces.Join

apply, comment, exists, first, last, notExists, or

从接口继承的方法 com.baomidou.mybatisplus.core.conditions.interfaces.Nested

and, nested, not, or

构造器详细资料

AbstractLambdaWrapper

public AbstractLambdaWrapper()

方法详细资料

columnsToString

@SafeVarargs
protected final String columnsToString(SFunction<T,?>... columns)

从类复制的说明: AbstractWrapper

获取 columnNames

覆盖:

columnsToString 在类中 AbstractWrapper<T,SFunction<T,?>,Children extends AbstractLambdaWrapper<T,Children>>

columnsToString

@SafeVarargs
protected final String columnsToString(boolean onlyColumn,
 SFunction<T,?>... columns)

columnsToString

protected final String columnsToString(boolean onlyColumn,
 List<SFunction<T,?>> columns)

columnToString

protected String columnToString(SFunction<T,?> column)

从类复制的说明: AbstractWrapper

获取 columnName

覆盖:

columnToString 在类中 AbstractWrapper<T,SFunction<T,?>,Children extends AbstractLambdaWrapper<T,Children>>

columnToString

protected String columnToString(SFunction<T,?> column,
 boolean onlyColumn)

groupBy

@SafeVarargs
public final Children groupBy(boolean condition,
 SFunction<T,?> column,
 SFunction<T,?>... columns)

从接口复制的说明: Func

分组：GROUP BY 字段, ...

例: groupBy(true, "id", "name")

指定者:

groupBy 在接口中 Func<T,Children extends AbstractLambdaWrapper<T,Children>>

覆盖:

groupBy 在类中 AbstractWrapper<T,SFunction<T,?>,Children extends AbstractLambdaWrapper<T,Children>>

参数:

condition - 执行条件

column - 单个字段

columns - 字段数组

返回:

children

orderBy

@SafeVarargs
public final Children orderBy(boolean condition,
 boolean isAsc,
 SFunction<T,?> column,
 SFunction<T,?>... columns)

从接口复制的说明: Func

排序：ORDER BY 字段, ...

指定者:

orderBy 在接口中 Func<T,Children extends AbstractLambdaWrapper<T,Children>>

覆盖:

orderBy 在类中 AbstractWrapper<T,SFunction<T,?>,Children extends AbstractLambdaWrapper<T,Children>>

参数:

condition - 执行条件

isAsc - 是否是 ASC 排序

columns - 字段列表

返回:

children

groupBy

@SafeVarargs
public final Children groupBy(SFunction<T,?> column,
 SFunction<T,?>... columns)

从接口复制的说明: Func

分组：GROUP BY 字段, ...

例: groupBy("id", "name")

参数:

column - 单个字段

columns - 字段数组

返回:

children

groupBy

public Children groupBy(boolean condition,
 SFunction<T,?> column,
 List<SFunction<T,?>> columns)

从接口复制的说明: Func

分组：GROUP BY 字段, ...

例: groupBy(true, "id", Arrays.asList("name"))

指定者:

groupBy 在接口中 Func<T,Children extends AbstractLambdaWrapper<T,Children>>

覆盖:

groupBy 在类中 AbstractWrapper<T,SFunction<T,?>,Children extends AbstractLambdaWrapper<T,Children>>

参数:

condition - 执行条件

column - 单个字段

columns - 字段数组

返回:

children

orderByAsc

@SafeVarargs
public final Children orderByAsc(SFunction<T,?> column,
 SFunction<T,?>... columns)

从接口复制的说明: Func

排序：ORDER BY 字段, ... ASC

参数:

column - 字段

columns - 字段数组

返回:

children

orderByAsc

@SafeVarargs
public final Children orderByAsc(boolean condition,
 SFunction<T,?> column,
 SFunction<T,?>... columns)

从接口复制的说明: Func

排序：ORDER BY 字段, ... ASC

参数:

condition - 执行条件

column - 字段

columns - 字段数组

orderByDesc

@SafeVarargs
public final Children orderByDesc(SFunction<T,?> column,
 SFunction<T,?>... columns)

从接口复制的说明: Func

排序：ORDER BY 字段, ... DESC

参数:

column - 单个字段

columns - 字段列表

orderByDesc

@SafeVarargs
public final Children orderByDesc(boolean condition,
 SFunction<T,?> column,
 SFunction<T,?>... columns)

从接口复制的说明: Func

排序：ORDER BY 字段, ... DESC

参数:

condition - 执行条件

column - 单个字段

columns - 字段列表

getColumnCache

protected ColumnCache getColumnCache(SFunction<T,?> column)

获取 SerializedLambda 对应的列信息，从 lambda 表达式中推测实体类

如果获取不到列信息，那么本次条件组装将会失败

返回:

列

抛出:

MybatisPlusException - 获取不到列信息时抛出异常