com.github.pagehelper.dialect

Class AbstractHelperDialect

java.lang.Object

com.github.pagehelper.dialect.AbstractDialect

com.github.pagehelper.dialect.AbstractHelperDialect

All Implemented Interfaces:

Constant, Dialect

Direct Known Subclasses:

Db2Dialect, HsqldbDialect, InformixDialect, MySqlDialect, OracleDialect, SqlServerDialect

public abstract class AbstractHelperDialect
extends AbstractDialect
implements Constant

针对 PageHelper 的实现

Since:

2016-12-04 14:32

Author:

liuzh

Field Summary

Fields inherited from class com.github.pagehelper.dialect.AbstractDialect

countSqlParser

Fields inherited from interface com.github.pagehelper.Constant

PAGEPARAMETER_FIRST, PAGEPARAMETER_SECOND, SUFFIX_COUNT, SUFFIX_PAGE

Constructor Summary

Constructors

Constructor and Description
AbstractHelperDialect()

Method Summary

Modifier and Type	Method and Description
void	afterAll() 完成所有任务后
boolean	afterCount(long count, Object parameterObject, org.apache.ibatis.session.RowBounds rowBounds) 执行完 count 查询后
Object	afterPage(List pageList, Object parameterObject, org.apache.ibatis.session.RowBounds rowBounds) 分页查询后，处理分页结果，拦截器中直接 return 该方法的返回值
boolean	beforeCount(org.apache.ibatis.mapping.MappedStatement ms, Object parameterObject, org.apache.ibatis.session.RowBounds rowBounds) 执行分页前，返回 true 会进行 count 查询，false 会继续下面的 beforePage 判断
boolean	beforePage(org.apache.ibatis.mapping.MappedStatement ms, Object parameterObject, org.apache.ibatis.session.RowBounds rowBounds) 执行分页前，返回 true 会进行分页查询，false 会返回默认查询结果
String	getCountSql(org.apache.ibatis.mapping.MappedStatement ms, org.apache.ibatis.mapping.BoundSql boundSql, Object parameterObject, org.apache.ibatis.session.RowBounds rowBounds, org.apache.ibatis.cache.CacheKey countKey) 生成 count 查询 sql
<T> Page<T>	getLocalPage() 获取分页参数
String	getPageSql(org.apache.ibatis.mapping.MappedStatement ms, org.apache.ibatis.mapping.BoundSql boundSql, Object parameterObject, org.apache.ibatis.session.RowBounds rowBounds, org.apache.ibatis.cache.CacheKey pageKey) 生成分页查询 sql
abstract String	getPageSql(String sql, Page page, org.apache.ibatis.cache.CacheKey pageKey) 单独处理分页部分
protected void	handleParameter(org.apache.ibatis.mapping.BoundSql boundSql, org.apache.ibatis.mapping.MappedStatement ms)
abstract Object	processPageParameter(org.apache.ibatis.mapping.MappedStatement ms, Map<String,Object> paramMap, Page page, org.apache.ibatis.mapping.BoundSql boundSql, org.apache.ibatis.cache.CacheKey pageKey) 处理分页参数
Object	processParameterObject(org.apache.ibatis.mapping.MappedStatement ms, Object parameterObject, org.apache.ibatis.mapping.BoundSql boundSql, org.apache.ibatis.cache.CacheKey pageKey) 处理查询参数对象
void	setProperties(Properties properties) 设置参数
boolean	skip(org.apache.ibatis.mapping.MappedStatement ms, Object parameterObject, org.apache.ibatis.session.RowBounds rowBounds) 跳过 count 和 分页查询

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractHelperDialect

public AbstractHelperDialect()

Method Detail

getLocalPage

public <T> Page<T> getLocalPage()

获取分页参数

Type Parameters:

T -

Returns:

skip

public final boolean skip(org.apache.ibatis.mapping.MappedStatement ms,
                          Object parameterObject,
                          org.apache.ibatis.session.RowBounds rowBounds)

Description copied from interface: Dialect

跳过 count 和 分页查询

Specified by:

skip in interface Dialect

Parameters:

ms - MappedStatement

parameterObject - 方法参数

rowBounds - 分页参数

Returns:

true 跳过，返回默认查询结果，false 执行分页查询

beforeCount

public boolean beforeCount(org.apache.ibatis.mapping.MappedStatement ms,
                           Object parameterObject,
                           org.apache.ibatis.session.RowBounds rowBounds)

Description copied from interface: Dialect

执行分页前，返回 true 会进行 count 查询，false 会继续下面的 beforePage 判断

Specified by:

beforeCount in interface Dialect

Parameters:

ms - MappedStatement

parameterObject - 方法参数

rowBounds - 分页参数

Returns:

getCountSql

public String getCountSql(org.apache.ibatis.mapping.MappedStatement ms,
                          org.apache.ibatis.mapping.BoundSql boundSql,
                          Object parameterObject,
                          org.apache.ibatis.session.RowBounds rowBounds,
                          org.apache.ibatis.cache.CacheKey countKey)

Description copied from interface: Dialect

生成 count 查询 sql

Specified by:

getCountSql in interface Dialect

Overrides:

getCountSql in class AbstractDialect

Parameters:

ms - MappedStatement

boundSql - 绑定 SQL 对象

parameterObject - 方法参数

rowBounds - 分页参数

countKey - count 缓存 key

Returns:

afterCount

public boolean afterCount(long count,
                          Object parameterObject,
                          org.apache.ibatis.session.RowBounds rowBounds)

Description copied from interface: Dialect

执行完 count 查询后

Specified by:

afterCount in interface Dialect

Parameters:

count - 查询结果总数

parameterObject - 接口参数

rowBounds - 分页参数

Returns:

true 继续分页查询，false 直接返回

processParameterObject

public Object processParameterObject(org.apache.ibatis.mapping.MappedStatement ms,
                                     Object parameterObject,
                                     org.apache.ibatis.mapping.BoundSql boundSql,
                                     org.apache.ibatis.cache.CacheKey pageKey)

Description copied from interface: Dialect

处理查询参数对象

Specified by:

processParameterObject in interface Dialect

Parameters:

ms - MappedStatement

Returns:

processPageParameter

public abstract Object processPageParameter(org.apache.ibatis.mapping.MappedStatement ms,
                                            Map<String,Object> paramMap,
                                            Page page,
                                            org.apache.ibatis.mapping.BoundSql boundSql,
                                            org.apache.ibatis.cache.CacheKey pageKey)

处理分页参数

Parameters:

ms -

paramMap -

page -

boundSql -

pageKey -

Returns:

beforePage

public boolean beforePage(org.apache.ibatis.mapping.MappedStatement ms,
                          Object parameterObject,
                          org.apache.ibatis.session.RowBounds rowBounds)

Description copied from interface: Dialect

执行分页前，返回 true 会进行分页查询，false 会返回默认查询结果

Specified by:

beforePage in interface Dialect

Parameters:

ms - MappedStatement

parameterObject - 方法参数

rowBounds - 分页参数

Returns:

getPageSql

public String getPageSql(org.apache.ibatis.mapping.MappedStatement ms,
                         org.apache.ibatis.mapping.BoundSql boundSql,
                         Object parameterObject,
                         org.apache.ibatis.session.RowBounds rowBounds,
                         org.apache.ibatis.cache.CacheKey pageKey)

Description copied from interface: Dialect

生成分页查询 sql

Specified by:

getPageSql in interface Dialect

Parameters:

ms - MappedStatement

boundSql - 绑定 SQL 对象

parameterObject - 方法参数

rowBounds - 分页参数

pageKey - 分页缓存 key

Returns:

getPageSql

public abstract String getPageSql(String sql,
                                  Page page,
                                  org.apache.ibatis.cache.CacheKey pageKey)

单独处理分页部分

Parameters:

sql -

page -

pageKey -

Returns:

afterPage

public Object afterPage(List pageList,
                        Object parameterObject,
                        org.apache.ibatis.session.RowBounds rowBounds)

Description copied from interface: Dialect

分页查询后，处理分页结果，拦截器中直接 return 该方法的返回值

Specified by:

afterPage in interface Dialect

Parameters:

pageList - 分页查询结果

parameterObject - 方法参数

rowBounds - 分页参数

Returns:

afterAll

public void afterAll()

Description copied from interface: Dialect

完成所有任务后

Specified by:

afterAll in interface Dialect

setProperties

public void setProperties(Properties properties)

Description copied from interface: Dialect

设置参数

Specified by:

setProperties in interface Dialect

Parameters:

properties - 插件属性

handleParameter

protected void handleParameter(org.apache.ibatis.mapping.BoundSql boundSql,
                               org.apache.ibatis.mapping.MappedStatement ms)