cn.veasion.db.query

类 AbstractQuery<T extends AbstractQuery<?>>

java.lang.Object

cn.veasion.db.AbstractFilter<T>

cn.veasion.db.query.AbstractQuery<T>

直接已知子类:

AbstractJoinQuery, Query

public abstract class AbstractQuery<T extends AbstractQuery<?>>
extends AbstractFilter<T>

AbstractQuery

作者:

luozhuowei

字段概要

字段

限定符和类型	字段和说明
protected Map<String,String>	aliasMap
protected boolean	selectAll
protected List<String>	selects

从类继承的字段 cn.veasion.db.AbstractFilter

checked

构造器概要

构造器

构造器和说明
AbstractQuery()

方法概要

限定符和类型	方法和说明
T	alias(String field, String alias)
T	asc(String field)
void	check(Class<?> mainEntityClass)
T	desc(String field)
T	distinct()
T	excludeFields(String... fields)
Map<String,String>	getAliasMap()
List<String>	getGroupBys()
List<Filter>	getHaving()
List<OrderParam>	getOrders()
PageParam	getPageParam()
List<Expression>	getSelectExpression()
List<String>	getSelects()
List<SubQueryParam>	getSelectSubQueryList()
List<UnionQueryParam>	getUnions()
T	groupBy(String... fields)
protected abstract String	handleField(String field)
T	having(Filter filter)
boolean	isDistinct()
boolean	isSelectAll()
T	order(OrderParam orderParam)
T	page(int page, int size)
T	page(PageParam pageParam)
T	select(String field)
T	select(String field, String alias)
T	selectAll()
T	selectExpression(Expression expression)
T	selectExpression(String expression, String alias, Object... values) 表达式查询
T	selects(String... fields)
T	selectSubQuery(SubQueryParam subQueryParam)
T	setGroupBys(List<String> groupBys)
QuerySQL	sqlValue()
T	union(AbstractQuery<T> unionQuery)
T	unionAll(AbstractQuery<T> unionQuery)

从类继承的方法 cn.veasion.db.AbstractFilter

addFilter, addFilters, andBracket, between, checkFilter, eq, exists, filterExpression, filterExpression, filterSubQuery, getEntityClass, getFilters, getFilters, getSelf, gt, gte, handleFilter, hasFilter, hasFilters, in, in, isNotNull, isNull, isSkipNullValueFilter, like, likeLeft, likeRight, lt, lte, neq, notExists, notIn, notIn, removeFilter, setEntityClass, setSkipNullValueFilter

从类继承的方法 java.lang.Object

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

字段详细资料

selectAll

protected boolean selectAll

selects

protected List<String> selects

aliasMap

protected Map<String,String> aliasMap

构造器详细资料

AbstractQuery

public AbstractQuery()

方法详细资料

distinct

public T distinct()

selectAll

public T selectAll()

select

public T select(String field)

select

public T select(String field,
                String alias)

selects

public T selects(String... fields)

selectSubQuery

public T selectSubQuery(SubQueryParam subQueryParam)

selectExpression

public T selectExpression(String expression,
                          String alias,
                          Object... values)

表达式查询

参数:

expression - 表达式，其中#{}和${}中间可以使用占位字段，解析时#{}会默认替换成values对应的值，${}替换成字段对应表中的列名

示例一：IFNULL(${userName}, #{value1})
示例二：IF(${u.type} = 1, AVG(${s.score}), SUM(${s.score}))

alias - 别名，如 userName

values - 占位值，对应 #{value1}, #{value2}, #{value3}, #{value...}，通过占位符拼接参数防SQL注入

selectExpression

public T selectExpression(Expression expression)

alias

public T alias(String field,
               String alias)

excludeFields

public T excludeFields(String... fields)

groupBy

public T groupBy(String... fields)

asc

public T asc(String field)

desc

public T desc(String field)

order

public T order(OrderParam orderParam)

having

public T having(Filter filter)

union

public T union(AbstractQuery<T> unionQuery)

unionAll

public T unionAll(AbstractQuery<T> unionQuery)

page

public T page(PageParam pageParam)

page

public T page(int page,
              int size)

handleField

protected abstract String handleField(String field)

isDistinct

public boolean isDistinct()

isSelectAll

public boolean isSelectAll()

getSelects

public List<String> getSelects()

getAliasMap

public Map<String,String> getAliasMap()

getSelectExpression

public List<Expression> getSelectExpression()

getSelectSubQueryList

public List<SubQueryParam> getSelectSubQueryList()

getGroupBys

public List<String> getGroupBys()

setGroupBys

public T setGroupBys(List<String> groupBys)

getOrders

public List<OrderParam> getOrders()

getHaving

public List<Filter> getHaving()

getUnions

public List<UnionQueryParam> getUnions()

getPageParam

public PageParam getPageParam()

check

public void check(Class<?> mainEntityClass)

覆盖:

check 在类中 AbstractFilter<T extends AbstractQuery<?>>

sqlValue

public QuerySQL sqlValue()