org.anyline.util

类 MapUtil

java.lang.Object

org.anyline.util.MapUtil

public class MapUtil
extends Object

构造器概要

构造器

构造器和说明
MapUtil()

方法概要

限定符和类型	方法和说明
static boolean	contain(Collection<Map<String,Object>> list, Map<String,Object> obj, List<String> keys)
static boolean	contain(Collection<Map<String,Object>> list, Map<String,Object> obj, String... keys)
static Map<String,Object>	copy(Map<String,Object> src, Map<String,Object> copy)
static Map<String,Object>	copy(Map<String,Object> src, Map<String,Object> copy, List<String> keys)
static Map<String,Object>	copy(Map<String,Object> src, Map<String,Object> copy, String... keys)
static Collection<Map<String,Object>>	distinct(Collection<Map<String,Object>> list, List<String> keys)
static Collection<Map<String,Object>>	distinct(Collection<Map<String,Object>> list, String... keys) 去重
static Collection<Object>	distinctValue(Collection<Map<String,Object>> list, String key)
static boolean	equals(Map<String,Object> obj1, Map<String,Object> obj2, List<String> keys)
static boolean	equals(Map<String,Object> obj1, Map<String,Object> obj2, String... keys)
static Map<String,Object>	extract(Map<String,Object> src, List<String> keys)
static Map<String,Object>	extract(Map<String,Object> src, String... keys)
static List<Map<String,Object>>	extracts(Collection<Map<String,Object>> list, String... keys) 提取集合中每个条目的多个key属性的值 如提取用户列表中的所有用户ID,CODE
static String	parseFinalValue(Map<String,Object> obj, String key)
static Collection<Map<String,Object>>	pivot(Collection<Map<String,Object>> datas, List<String> pks, List<String> classKeys, List<String> valueKeys) 行转列 表结构(编号, 姓名, 年度, 科目, 分数, 等级)
static Collection<Map<String,Object>>	pivot(Collection<Map<String,Object>> datas, List<String> pks, List<String> classKeys, String... valueKeys)
static Collection<Map<String,Object>>	pivot(Collection<Map<String,Object>> datas, String[] pks, String[] classKeys, String[] valueKeys)
static Collection<Map<String,Object>>	pivot(Collection<Map<String,Object>> datas, String pk, String classKey)
static Collection<Map<String,Object>>	pivot(Collection<Map<String,Object>> datas, String pk, String classKey, String valueKey) 行转列
static Map<String,Object>	query(Collection<Map<String,Object>> datas, Map<String,Object> kvs)
static List<Map<String,Object>>	querys(Collection<Map<String,Object>> datas, int begin, int qty, Map<String,Object> kvs)
static List<Map<String,Object>>	querys(Collection<Map<String,Object>> datas, int begin, int qty, String... params)
static List<Map<String,Object>>	querys(Collection<Map<String,Object>> datas, int begin, String... params)
static List<Map<String,Object>>	querys(Collection<Map<String,Object>> datas, String... params)

从类继承的方法 java.lang.Object

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

构造器详细资料

MapUtil

public MapUtil()

方法详细资料

extracts

public static List<Map<String,Object>> extracts(Collection<Map<String,Object>> list,
                                                String... keys)

提取集合中每个条目的多个key属性的值 如提取用户列表中的所有用户ID,CODE

参数:

list - list

keys - keys

返回:

List

distinct

public static Collection<Map<String,Object>> distinct(Collection<Map<String,Object>> list,
                                                      String... keys)

去重

参数:

list - list

keys - 根据keys列或属性值比较

返回:

return

distinctValue

public static Collection<Object> distinctValue(Collection<Map<String,Object>> list,
                                               String key)

distinct

public static Collection<Map<String,Object>> distinct(Collection<Map<String,Object>> list,
                                                      List<String> keys)

extract

public static Map<String,Object> extract(Map<String,Object> src,
                                         List<String> keys)

extract

public static Map<String,Object> extract(Map<String,Object> src,
                                         String... keys)

contain

public static boolean contain(Collection<Map<String,Object>> list,
                              Map<String,Object> obj,
                              String... keys)

contain

public static boolean contain(Collection<Map<String,Object>> list,
                              Map<String,Object> obj,
                              List<String> keys)

equals

public static boolean equals(Map<String,Object> obj1,
                             Map<String,Object> obj2,
                             List<String> keys)

equals

public static boolean equals(Map<String,Object> obj1,
                             Map<String,Object> obj2,
                             String... keys)

parseFinalValue

public static String parseFinalValue(Map<String,Object> obj,
                                     String key)

copy

public static Map<String,Object> copy(Map<String,Object> src,
                                      Map<String,Object> copy,
                                      List<String> keys)

copy

public static Map<String,Object> copy(Map<String,Object> src,
                                      Map<String,Object> copy,
                                      String... keys)

copy

public static Map<String,Object> copy(Map<String,Object> src,
                                      Map<String,Object> copy)

query

public static Map<String,Object> query(Collection<Map<String,Object>> datas,
                                       Map<String,Object> kvs)

querys

public static List<Map<String,Object>> querys(Collection<Map<String,Object>> datas,
                                              int begin,
                                              String... params)

querys

public static List<Map<String,Object>> querys(Collection<Map<String,Object>> datas,
                                              String... params)

querys

public static List<Map<String,Object>> querys(Collection<Map<String,Object>> datas,
                                              int begin,
                                              int qty,
                                              String... params)

querys

public static List<Map<String,Object>> querys(Collection<Map<String,Object>> datas,
                                              int begin,
                                              int qty,
                                              Map<String,Object> kvs)

pivot

public static Collection<Map<String,Object>> pivot(Collection<Map<String,Object>> datas,
                                                   List<String> pks,
                                                   List<String> classKeys,
                                                   List<String> valueKeys)

行转列 表结构(编号, 姓名, 年度, 科目, 分数, 等级)

参数:

datas - 数据集

pks - 唯一标识key(如编号,姓名)

classKeys - 分类key(如年度,科目)

valueKeys - 取值key(如分数,等级),如果不指定key则将整行作为value

返回:

如果指定key 返回结构 [ {编号:01,姓名:张三,2010-数学-分数:100}, {编号:01,姓名:张三,2010-数学-等级:A}, {编号:01,姓名:张三,2010-物理-分数:100} ] 如果只有一个valueKey则返回[ {编号:01,姓名:张三,2010-数学:100}, {编号:01,姓名:张三,2010-物理:90} ] 不指定valuekey则返回 [ {编号:01,姓名:张三,2010-数学:{分数:100,等级:A}}, {编号:01,姓名:张三,2010-物理:{分数:100,等级:A}} ]

pivot

public static Collection<Map<String,Object>> pivot(Collection<Map<String,Object>> datas,
                                                   String[] pks,
                                                   String[] classKeys,
                                                   String[] valueKeys)

pivot

public static Collection<Map<String,Object>> pivot(Collection<Map<String,Object>> datas,
                                                   String pk,
                                                   String classKey,
                                                   String valueKey)

行转列

参数:

datas - 数据

pk - 唯一标识key(如姓名)多个key以,分隔如(编号,姓名)

classKey - 分类key(如科目)多个key以,分隔如(科目,年度)

valueKey - 取值key(如分数)多个key以,分隔如(分数,等级)

返回:

表结构(姓名,科目,分数) 返回结构 [{姓名:张三,数学:100,物理:90,英语:80},{姓名:李四,数学:100,物理:90,英语:80}]

pivot

public static Collection<Map<String,Object>> pivot(Collection<Map<String,Object>> datas,
                                                   String pk,
                                                   String classKey)

pivot

public static Collection<Map<String,Object>> pivot(Collection<Map<String,Object>> datas,
                                                   List<String> pks,
                                                   List<String> classKeys,
                                                   String... valueKeys)