com.github.yulichang.query

类 MPJLambdaQueryWrapper<T>

java.lang.Object

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

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

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

com.github.yulichang.query.MPJLambdaQueryWrapper<T>

所有已实现的接口:

com.baomidou.mybatisplus.core.conditions.interfaces.Compare<MPJLambdaQueryWrapper<T>,com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>>, com.baomidou.mybatisplus.core.conditions.interfaces.Func<MPJLambdaQueryWrapper<T>,com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>>, com.baomidou.mybatisplus.core.conditions.interfaces.Join<MPJLambdaQueryWrapper<T>>, com.baomidou.mybatisplus.core.conditions.interfaces.Nested<MPJLambdaQueryWrapper<T>,MPJLambdaQueryWrapper<T>>, com.baomidou.mybatisplus.core.conditions.ISqlSegment, com.baomidou.mybatisplus.core.conditions.query.Query<MPJLambdaQueryWrapper<T>,T,com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>>, MPJBaseJoin<T>, CompareIfAbsent<MPJLambdaQueryWrapper<T>,com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>>, StringJoin<MPJLambdaQueryWrapper<T>,T>, Serializable

public class MPJLambdaQueryWrapper<T>
extends com.baomidou.mybatisplus.core.conditions.AbstractLambdaWrapper<T,MPJLambdaQueryWrapper<T>>
implements com.baomidou.mybatisplus.core.conditions.query.Query<MPJLambdaQueryWrapper<T>,T,com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>>, StringJoin<MPJLambdaQueryWrapper<T>,T>, CompareIfAbsent<MPJLambdaQueryWrapper<T>,com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>>

MPJLambdaQueryWrapper 参考 -> LambdaQueryWrapper

作者:

yulichang

另请参阅:

LambdaQueryWrapper, 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

com.baomidou.mybatisplus.core.conditions.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

构造器和说明
MPJLambdaQueryWrapper() 不建议直接 new 该实例，使用 Wrappers.lambdaQuery(entity)

方法概要

限定符和类型	方法和说明
void	clear()
protected String	columnToString(com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?> column, boolean onlyColumn)
MPJLambdaQueryWrapper<T>	disableLogicDel() 关闭主表逻辑删除
MPJLambdaQueryWrapper<T>	distinct() sql去重 select distinct
MPJLambdaQueryWrapper<T>	enableLogicDel() 启用主表逻辑删除
Class<T>	getEntityClass()
String	getFrom()
boolean	getLogicSql() 逻辑删除
boolean	getSelectDistinct()
com.baomidou.mybatisplus.core.conditions.SharedString	getSqlFirstField()
String	getSqlSelect()
String	getSubLogicSql() 逻辑删除
String	getTableName(String tableName)
String	getTableNameEnc(String tableName)
protected MPJLambdaQueryWrapper<T>	instance() 用于生成嵌套 sql 故 sqlSelect selectColumn ignoreColumns from不向下传递
MPJLambdaQueryWrapper<T>	join(String keyWord, boolean condition, String joinSql)
MPJLambdaQueryWrapper<T>	select(boolean condition, List<com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>> columns)
MPJLambdaQueryWrapper<T>	select(Class<T> entityClass, java.util.function.Predicate<com.baomidou.mybatisplus.core.metadata.TableFieldInfo> predicate) 只针对主表 过滤查询的字段信息(主键除外!)
MPJLambdaQueryWrapper<T>	select(com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>... columns) SELECT 部分 SQL 设置
MPJLambdaQueryWrapper<T>	select(String... columns)
MPJLambdaQueryWrapper<T>	selectAll(Class<?> clazz, String as) 查询表全部字段
MPJLambdaQueryWrapper<T>	selectAll(Class<T> clazz) 查询主表全部字段
MPJLambdaQueryWrapper<T>	selectIgnore(com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>... columns) 忽略查询字段 用法: selectIgnore("t.id","t.sex","a.area")
MPJLambdaQueryWrapper<T>	selectIgnore(String... columns) 忽略查询字段 用法: selectIgnore("t.id","t.sex","a.area")
MPJLambdaQueryWrapper<T>	setAlias(String alias)
MPJLambdaQueryWrapper<T>	setEntityClass(Class<T> entityClass)
MPJLambdaQueryWrapper<T>	setIfAbsent(java.util.function.BiPredicate<Object,IfAbsentSqlKeyWordEnum> ifAbsent)
MPJLambdaQueryWrapper<T>	setIfAbsent(java.util.function.Predicate<Object> ifAbsent)
MPJLambdaQueryWrapper<T>	setTableName(java.util.function.Function<String,String> func) 动态表名 如果主表需要动态表名,主表实体必须添加 @DynamicTableName 注解 关联表则不需要 加不加注解都会生效
MPJQueryWrapper<T>	stringQuery() 返回一个支持 lambda 函数写法的 wrapper

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

columnsToString, columnsToString, columnsToString, columnToString, getColumnCache, groupBy, groupBy, groupBy, orderBy, orderByAsc, orderByAsc, orderByDesc, orderByDesc

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

addCondition, addNestedCondition, allEq, allEq, and, and, appendSqlSegments, apply, between, clone, columnsToString, columnToSqlSegment, comment, doGroupBy, doOrderBy, eq, exists, first, formatParam, formatSqlMaybeWithParam, func, ge, geSql, getEntity, getExpression, getParamAlias, getParamNameValuePairs, getSqlComment, getSqlFirst, getSqlSegment, groupBy, groupBy, gt, gtSql, having, in, in, inExpression, inExpression, initNeed, inSql, 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, setParamAlias

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

getCustomSqlSegment, 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.query.Query

select, select, select

从接口继承的方法 com.github.yulichang.query.interfaces.StringJoin

fullJoin, fullJoin, innerJoin, innerJoin, leftJoin, leftJoin, rightJoin, rightJoin

从接口继承的方法 com.github.yulichang.interfaces.MPJBaseJoin

getDeleteLogicSql, getDeleteSql, getUnionSql

从接口继承的方法 com.github.yulichang.query.interfaces.CompareIfAbsent

eqIfAbsent, geIfAbsent, getIfAbsent, gtIfAbsent, leIfAbsent, likeIfAbsent, likeLeftIfAbsent, likeRightIfAbsent, ltIfAbsent, neIfAbsent, notLikeIfAbsent, notLikeLeftIfAbsent, notLikeRightIfAbsent

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

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

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

and, nested, not, or

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.Func

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

构造器详细资料

MPJLambdaQueryWrapper

public MPJLambdaQueryWrapper()

不建议直接 new 该实例，使用 Wrappers.lambdaQuery(entity)

方法详细资料

select

@SafeVarargs
public final MPJLambdaQueryWrapper<T> select(com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>... columns)

SELECT 部分 SQL 设置

指定者:

select 在接口中 com.baomidou.mybatisplus.core.conditions.query.Query<MPJLambdaQueryWrapper<T>,T,com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>>

参数:

columns - 查询字段

select

public MPJLambdaQueryWrapper<T> select(boolean condition,
                                       List<com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>> columns)

指定者:

select 在接口中 com.baomidou.mybatisplus.core.conditions.query.Query<MPJLambdaQueryWrapper<T>,T,com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>>

selectIgnore

public MPJLambdaQueryWrapper<T> selectIgnore(String... columns)

忽略查询字段

用法: selectIgnore("t.id","t.sex","a.area")

从以下版本开始:

1.1.3

selectIgnore

@SafeVarargs
public final MPJLambdaQueryWrapper<T> selectIgnore(com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>... columns)

忽略查询字段

用法: selectIgnore("t.id","t.sex","a.area")

从以下版本开始:

1.1.3

columnToString

protected String columnToString(com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?> column,
                                boolean onlyColumn)

覆盖:

columnToString 在类中 com.baomidou.mybatisplus.core.conditions.AbstractLambdaWrapper<T,MPJLambdaQueryWrapper<T>>

select

public MPJLambdaQueryWrapper<T> select(String... columns)

select

public MPJLambdaQueryWrapper<T> select(Class<T> entityClass,
                                       java.util.function.Predicate<com.baomidou.mybatisplus.core.metadata.TableFieldInfo> predicate)

只针对主表

过滤查询的字段信息(主键除外!)

例1: 只要 java 字段名以 "test" 开头的 -> select(i -> i.getProperty().startsWith("test"))

例2: 只要 java 字段属性是 CharSequence 类型的 -> select(TableFieldInfo::isCharSequence)

例3: 只要 java 字段没有填充策略的 -> select(i -> i.getFieldFill() == FieldFill.DEFAULT)

例4: 要全部字段 -> select(i -> true)

例5: 只要主键字段 -> select(i -> false)

指定者:

select 在接口中 com.baomidou.mybatisplus.core.conditions.query.Query<MPJLambdaQueryWrapper<T>,T,com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>>

参数:

predicate - 过滤方式

返回:

this

selectAll

public final MPJLambdaQueryWrapper<T> selectAll(Class<T> clazz)

查询主表全部字段

参数:

clazz - 主表class

selectAll

public final MPJLambdaQueryWrapper<T> selectAll(Class<?> clazz,
                                                String as)

查询表全部字段

参数:

clazz - 表实体

as - 表别名

stringQuery

public MPJQueryWrapper<T> stringQuery()

返回一个支持 lambda 函数写法的 wrapper

getSqlSelect

public String getSqlSelect()

指定者:

getSqlSelect 在接口中 com.baomidou.mybatisplus.core.conditions.query.Query<MPJLambdaQueryWrapper<T>,T,com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>>

覆盖:

getSqlSelect 在类中 com.baomidou.mybatisplus.core.conditions.Wrapper<T>

distinct

public MPJLambdaQueryWrapper<T> distinct()

sql去重 select distinct

getFrom

public String getFrom()

setAlias

public MPJLambdaQueryWrapper<T> setAlias(String alias)

getSubLogicSql

public String getSubLogicSql()

逻辑删除

disableLogicDel

public MPJLambdaQueryWrapper<T> disableLogicDel()

关闭主表逻辑删除

enableLogicDel

public MPJLambdaQueryWrapper<T> enableLogicDel()

启用主表逻辑删除

getLogicSql

public boolean getLogicSql()

逻辑删除

getSelectDistinct

public boolean getSelectDistinct()

setTableName

public MPJLambdaQueryWrapper<T> setTableName(java.util.function.Function<String,String> func)

动态表名 如果主表需要动态表名,主表实体必须添加 @DynamicTableName 注解 关联表则不需要 加不加注解都会生效

另请参阅:

DynamicTableName

getTableName

public String getTableName(String tableName)

getTableNameEnc

public String getTableNameEnc(String tableName)

setIfAbsent

public MPJLambdaQueryWrapper<T> setIfAbsent(java.util.function.BiPredicate<Object,IfAbsentSqlKeyWordEnum> ifAbsent)

setIfAbsent

public MPJLambdaQueryWrapper<T> setIfAbsent(java.util.function.Predicate<Object> ifAbsent)

instance

protected MPJLambdaQueryWrapper<T> instance()

用于生成嵌套 sql

故 sqlSelect selectColumn ignoreColumns from不向下传递

指定者:

instance 在类中 com.baomidou.mybatisplus.core.conditions.AbstractWrapper<T,com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>,MPJLambdaQueryWrapper<T>>

getEntityClass

public Class<T> getEntityClass()

覆盖:

getEntityClass 在类中 com.baomidou.mybatisplus.core.conditions.AbstractWrapper<T,com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>,MPJLambdaQueryWrapper<T>>

setEntityClass

public MPJLambdaQueryWrapper<T> setEntityClass(Class<T> entityClass)

覆盖:

setEntityClass 在类中 com.baomidou.mybatisplus.core.conditions.AbstractWrapper<T,com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>,MPJLambdaQueryWrapper<T>>

getSqlFirstField

public com.baomidou.mybatisplus.core.conditions.SharedString getSqlFirstField()

clear

public void clear()

覆盖:

clear 在类中 com.baomidou.mybatisplus.core.conditions.AbstractWrapper<T,com.baomidou.mybatisplus.core.toolkit.support.SFunction<T,?>,MPJLambdaQueryWrapper<T>>

join

public MPJLambdaQueryWrapper<T> join(String keyWord,
                                     boolean condition,
                                     String joinSql)

指定者:

join 在接口中 StringJoin<MPJLambdaQueryWrapper<T>,T>