Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 DKF
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 'UM *7
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 -F MonM
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 <LN7+7}
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分页支持类: YLuf2ja}X
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java代码: 2OQ\ z;s
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package com.javaeye.common.util; KD?b|y@
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import java.util.List; B<0Kl.V
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publicclass PaginationSupport { n#@ Qd!uzM
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publicfinalstaticint PAGESIZE = 30; F~eY'~&H}
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privateint pageSize = PAGESIZE; ^b.#4i(v
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privateList items; "lSh4X
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privateint totalCount; Ej1<T,w_
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privateint[] indexes = newint[0]; qHvUBx0
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privateint startIndex = 0; wE}Wh5
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public PaginationSupport(List items, int 216$,4i
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totalCount){ 9Vo*AK'&U
setPageSize(PAGESIZE); 8:>V'j
setTotalCount(totalCount); ZJ.an%4
setItems(items); SMzq,?-`
setStartIndex(0); m xqY
} Hq!|r8@6
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public PaginationSupport(List items, int 5{Q9n{dOh
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totalCount, int startIndex){ :q?#$?
setPageSize(PAGESIZE); e.~11bx
setTotalCount(totalCount); ncMzHw
setItems(items); w)`XM
setStartIndex(startIndex); @\o"zU
} I2Imb9k~B
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public PaginationSupport(List items, int RB|i<`Z
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totalCount, int pageSize, int startIndex){ @5ud{"|2
setPageSize(pageSize); zo8D"
setTotalCount(totalCount); ?{e}ouKYX1
setItems(items); /KNDo^P
setStartIndex(startIndex); ^\&FowpP
} om2N*W.gk
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publicList getItems(){ {_/ o' 6
return items; I7~) q`
} ~f[ Y;
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publicvoid setItems(List items){ igW* {)h3
this.items = items; -%@ah:iJ
} >7zC-3
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publicint getPageSize(){ w jD<"p;P
return pageSize; +`_0tM1
} @XXPJq;J
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publicvoid setPageSize(int pageSize){ m\X\Xp~A
this.pageSize = pageSize; J=k=cFUX
} _+'!l'`
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publicint getTotalCount(){ %,~?;JAj
return totalCount; 28`s+sH
} `$S&:Q,
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publicvoid setTotalCount(int totalCount){ -5 D<zP/
if(totalCount > 0){ o~)o/(>ox
this.totalCount = totalCount; "ayV8{m^3
int count = totalCount / %9a3$OGZX
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pageSize; w.a9}GC
if(totalCount % pageSize > 0) ,(pp+hNq
count++; 3h d30o
indexes = newint[count]; 6#!CBY^{
for(int i = 0; i < count; i++){ -(]CFnD_N
indexes = pageSize * f!`?_
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} >%om[]0E
}else{ O~6%Iz`
this.totalCount = 0; .Zv~a&GE
} nqm=snh
} Z$JJ0X
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publicint[] getIndexes(){ YLGE{bS
return indexes; BEvY&3%l
} bo/9k 4N3
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publicvoid setIndexes(int[] indexes){ @,TIw[p
this.indexes = indexes; jD6HCIjd'
} ]i$y;]f
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publicint getStartIndex(){ C| ~A]wc=
return startIndex; 2cH RiRT
} gTXpaB<
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publicvoid setStartIndex(int startIndex){ 1o%#kf
if(totalCount <= 0) G
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this.startIndex = 0; j<*7p:L7_>
elseif(startIndex >= totalCount) H3<tsK=:
this.startIndex = indexes 1+uZF
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[indexes.length - 1]; r)pt(*KHo
elseif(startIndex < 0) ?$ e]K/*
this.startIndex = 0; in<.0v9w
else{ p eO@ZKmM
this.startIndex = indexes :5,~CtF5 `
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[startIndex / pageSize]; 1>j,v+
} *k62Qz3
} '-YiV
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publicint getNextIndex(){ )|xu5.F
int nextIndex = getStartIndex() + 4d5c]%
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pageSize; z&amYwQcI
if(nextIndex >= totalCount) 6r<a
return getStartIndex(); Lz.khE<
else t.28IHJ
return nextIndex; U
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} rM,e$
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publicint getPreviousIndex(){ E5n7
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int previousIndex = getStartIndex() - $qQYxx@
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pageSize; E=ijt3
if(previousIndex < 0) `xLsD}32
return0; ?f"5yQ-B
else w~b:9_reY
return previousIndex; hi1Ial\Y
} ,SR7DiYg
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抽象业务类 = UH3.
java代码: kWXLncE
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/** S\).0goOW
* Created on 2005-7-12 kP
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*/ XGx[Ny_A2
package com.javaeye.common.business; lI=<lmM0|/
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import java.io.Serializable; QM0B6F
import java.util.List; ]$@a.#}
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import org.hibernate.Criteria; F}nwTras
import org.hibernate.HibernateException; A`Z/B[)
import org.hibernate.Session; LORcf 1X/
import org.hibernate.criterion.DetachedCriteria; }<04\t?
import org.hibernate.criterion.Projections; pmNy=ZXx
import 4nsJZo#S/
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org.springframework.orm.hibernate3.HibernateCallback; R@o&c%K"
import 'o-4'
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org.springframework.orm.hibernate3.support.HibernateDaoS .G O0xnm
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upport; =u<:'\_
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import com.javaeye.common.util.PaginationSupport; cV+?j}"*+
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public abstract class AbstractManager extends *LEy#N
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HibernateDaoSupport { CxFd/X,
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privateboolean cacheQueries = false; ;77K1
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privateString queryCacheRegion; $v0,)AL i
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publicvoid setCacheQueries(boolean S+T/(-W
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cacheQueries){ 3Qy@^"
this.cacheQueries = cacheQueries; ))"gWO
} KNVu[P)rv
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publicvoid setQueryCacheRegion(String ^#Ii=K-[^
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queryCacheRegion){ UY',n,
this.queryCacheRegion = _?tpO61g>
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queryCacheRegion; |6E_N5~
} o`bc/3!
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publicvoid save(finalObject entity){ ;k <dp7^
getHibernateTemplate().save(entity); 80=0S^gEZ
} j6m;03<|
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publicvoid persist(finalObject entity){ &`r/+B_W
getHibernateTemplate().save(entity); uz8LF47@:-
} bv+u7B6,
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publicvoid update(finalObject entity){ /I%z7f91O
getHibernateTemplate().update(entity); }Le]qR9Y]
} AC,RS7
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publicvoid delete(finalObject entity){ Gw*Tz"
getHibernateTemplate().delete(entity); `/8@Fj
} QN:v4,$d
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publicObject load(finalClass entity, `'YX>u /
idI w7hi4
finalSerializable id){ Tq1\
return getHibernateTemplate().load kaBjA*
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(entity, id); 4 PK}lc
} xRh 22z
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publicObject get(finalClass entity, d][
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finalSerializable id){ :{7+[LcH7
return getHibernateTemplate().get ula-o)S
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(entity, id); jP+yN|
} 28MMH
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publicList findAll(finalClass entity){ 9zp!lw~;+
return getHibernateTemplate().find("from &,nv+>D
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" + entity.getName()); B8@mL-Z-;
} i^s Vy
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publicList findByNamedQuery(finalString nS+Rbhs
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namedQuery){ CFtQPTw
return getHibernateTemplate }%wd1`l7
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().findByNamedQuery(namedQuery); zm_8a!.
} feej'l }F
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publicList findByNamedQuery(finalString query, \nl(tU#j
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finalObject parameter){ 3c<aI=$^
return getHibernateTemplate 78&|^sq
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().findByNamedQuery(query, parameter); Xaq;d'
} hkMeUxS
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publicList findByNamedQuery(finalString query, 7)Toj
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finalObject[] parameters){ n:@!vV
return getHibernateTemplate f|d~=\0y
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().findByNamedQuery(query, parameters); Bx?3E^!T
} @v-^j
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publicList find(finalString query){ iJs~NLCgVu
return getHibernateTemplate().find {:X'9NEE
}d[(kC_
(query); ^FVdA1~/
} i)i>Ulj*i
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publicList find(finalString query, finalObject @r"\bBi
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parameter){ xR+vu>f
return getHibernateTemplate().find N`8K1{>BH
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(query, parameter); @Z5q2Q
} k/K)nH@)
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public PaginationSupport findPageByCriteria 'HA{6v,y
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(final DetachedCriteria detachedCriteria){ 5y#,z`S
return findPageByCriteria 8v$q+Wic
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); T7[@ lMa?
} r%,?uim#
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public PaginationSupport findPageByCriteria {cK<iQJ
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(final DetachedCriteria detachedCriteria, finalint 5KCQvv\
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startIndex){ i<uU_g'M
return findPageByCriteria Liqo)m
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(detachedCriteria, PaginationSupport.PAGESIZE, +=tdgw/
8}QM~&&.
startIndex); _>gz&
}
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public PaginationSupport findPageByCriteria YvY|\2^K
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(final DetachedCriteria detachedCriteria, finalint QV|6"4\
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pageSize, DV5hTw0
finalint startIndex){ Q'<AV1<
return(PaginationSupport) .S` q2C\
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getHibernateTemplate().execute(new HibernateCallback(){ }">r0v!3
publicObject doInHibernate n
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(Session session)throws HibernateException { ~&?([}A
Criteria criteria = \0\ O/^W0
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detachedCriteria.getExecutableCriteria(session); pW]j.JM
int totalCount = WjVBz
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((Integer) criteria.setProjection(Projections.rowCount :H}iL*
; lMv xt:
()).uniqueResult()).intValue(); 0R?1|YnB
criteria.setProjection t3L>@NWG
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(null); e!u]l
List items = - H?c4? 5
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criteria.setFirstResult(startIndex).setMaxResults 91R#/i
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(pageSize).list(); Wa;N(zw0h
PaginationSupport ps = vC]X>P5 Px
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new PaginationSupport(items, totalCount, pageSize, i?T-6{3I
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startIndex); +d,
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return ps;
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} VDxm|7
}, true); k1Y\g'1
} M;A_'h?Z
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public List findAllByCriteria(final Wn<?_}sa|z
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DetachedCriteria detachedCriteria){ ,TBOEu."4
return(List) getHibernateTemplate _c>iux;
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().execute(new HibernateCallback(){ z}vT8qoX
publicObject doInHibernate !W}sOK7#
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(Session session)throws HibernateException { #*(}%!rD*
Criteria criteria = ;4O[/;i
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detachedCriteria.getExecutableCriteria(session); HLyAzB~r
return criteria.list(); 8xy8/UBIk0
} fJFNS
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}, true); TXImmkC
} MlV(XG>'
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public int getCountByCriteria(final b9H(w%7ucU
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DetachedCriteria detachedCriteria){ #:6-O
Integer count = (Integer) 7Ae`>5B#
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getHibernateTemplate().execute(new HibernateCallback(){ D||0c"E
publicObject doInHibernate LOU P
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(Session session)throws HibernateException { oidZWy
Criteria criteria = Jm_)}dj3o
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detachedCriteria.getExecutableCriteria(session); V%-hP~nyBx
return V60L\?a
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criteria.setProjection(Projections.rowCount .`D'eS6b
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()).uniqueResult(); mSYjc)z
} M`Y^hDl 6
}, true); Nj9A-*0g6N
return count.intValue(); FC0fe_U(F
} _c-3eQ1
} g*$2qKm
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用户在web层构造查询条件detachedCriteria,和可选的 }UyQGRZ=
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startIndex,调用业务bean的相应findByCriteria方法,返回一个 8maWF.xq
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PaginationSupport的实例ps。 12 p`ZD=
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ps.getItems()得到已分页好的结果集 t}+/GSwT
ps.getIndexes()得到分页索引的数组 TpU\IQ
ps.getTotalCount()得到总结果数 tF;0P\i
ps.getStartIndex()当前分页索引 =Jm[1Mgt
ps.getNextIndex()下一页索引 Lx,=Up.
ps.getPreviousIndex()上一页索引 >)M{^
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连续看了两篇robbin有关DetachedCriteria的介绍,感觉真的不错 vF^d40gV
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,尤其是上面的示例代码,让我着实觉得该对我原来的分页查询做 sK2N3B&6
-6[DQB
一下代码重构了。
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我把原本我的做法也提供出来供大家讨论吧: cC~RW71
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首先,为了实现分页查询,我封装了一个Page类: REW[`MBQ
java代码: 2U)n^
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/*Created on 2005-4-14*/ @7 Ry{,A
package org.flyware.util.page; kcfT|@:MK"
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/** Y4k2=w:D
* @author Joa 6n]+(=
* BqNsW
(+
*/ 3;>ls~4
publicclass Page { 4l 67B]o
-8l<5g7
/** imply if the page has previous page */ TIGtX]`
privateboolean hasPrePage; $d*9]M4
"\wMs
/** imply if the page has next page */ 3E*|^*
privateboolean hasNextPage; (=j;rfvP
b~aM=71
/** the number of every page */ ](Fey0@
privateint everyPage; /DAR'9@h
,@ '^3u
/** the total page number */ G*9(O:
privateint totalPage; 2+9VDf2
jR%*,IeB
/** the number of current page */ gG?@_ie
privateint currentPage; -#ZvjEaey
PYCN3s#Gi
/** the begin index of the records by the current x7S\-<8
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query */ @j|E"VYY
privateint beginIndex; &5 "!0
3^/w`(-{@
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/** The default constructor */ =UKxf
public Page(){ _[HZ[ 9c!
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} @:>]jp}uq
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/** construct the page by everyPage \V-N~_-H
* @param everyPage )ce 6~
* */ 5f*_K6 ,v
public Page(int everyPage){ D40 vCax^J
this.everyPage = everyPage; 3"x_Y
} _ $a3lR
iVFOOsJ@
/** The whole constructor */ Cx TAd[az
public Page(boolean hasPrePage, boolean hasNextPage, R,3cJ
Y_%
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int everyPage, int totalPage, G'JHimP2j
int currentPage, int beginIndex){ {w2]
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this.hasPrePage = hasPrePage; HPphTu}`
this.hasNextPage = hasNextPage; |^Iox0A
this.everyPage = everyPage; O=jLZ2os
this.totalPage = totalPage; zM0}(5$m
this.currentPage = currentPage; sT?{
this.beginIndex = beginIndex; e"hfeNphz
} <{#_;7h"
h4]^~stI
/** gWr7^u&q@|
* @return .I^4Fc}&4
* Returns the beginIndex. k!Yc_ZB:*l
*/ RRja{*R
publicint getBeginIndex(){ Kn^+kHh:
return beginIndex; W1REF9i){
} ]Q"T8drL
TsFhrtnx&X
/** -lo?16w
* @param beginIndex [QnN1k
* The beginIndex to set. <@Q27oEuA
*/ d]0:r]e
publicvoid setBeginIndex(int beginIndex){ w;,34qbf
this.beginIndex = beginIndex; <q7o"NI6FZ
} o898pg
27!FB@k-
/** {4S UGo>
* @return ~uhW~bT
* Returns the currentPage. AMyg>n!
*/ Y#os6|MV#
publicint getCurrentPage(){ ~:Rbd9IB
return currentPage; 0z/*JVka
} TnQ>v{Rx
P&Keslk
/** Ll|-CY $
* @param currentPage .?u<|4jE6
* The currentPage to set. iYr)Ao5X
*/ lrE"phYk
publicvoid setCurrentPage(int currentPage){ TdPd8ig8{
this.currentPage = currentPage; "}3sL#|z
} PSJj$bt;<+
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/** Ll
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* @return <N)!s&D
* Returns the everyPage. vm! y2
*/ JRB6T _U
publicint getEveryPage(){ ]$g07 7o
return everyPage; @ZISv'F
} dqB,i9--
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/** obvE m[x!Z
* @param everyPage f7*Qa!!2p]
* The everyPage to set. :u7BCV|yr
*/ =K:[26
publicvoid setEveryPage(int everyPage){ s",Ea*
this.everyPage = everyPage; Fn5BWV
} z\eQB%aM
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/** f9#zV2ke]
* @return ~lV#- m*
* Returns the hasNextPage. wXUR9H|0(
*/ E+Bc>xl@m
publicboolean getHasNextPage(){ ~R;/u")@e
return hasNextPage; )1
-<v);
} XHA|v^
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/** HVa D
* @param hasNextPage IT NFmD
* The hasNextPage to set. /Qst :q
*/ xuUEJ
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publicvoid setHasNextPage(boolean hasNextPage){ pEwo}NS*H
this.hasNextPage = hasNextPage; 1KUjb@"
} |pHlBzHj
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RX F{
/** ku,{NY
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* @return a6 gw6jQ
* Returns the hasPrePage. N5K(yY_T
*/ -L/%2 X
publicboolean getHasPrePage(){ N)mZ!K44
return hasPrePage; ?pIELezfK
} L,R}l0kc
<Z.`X7]Uk
/** Dspvc
* @param hasPrePage Pyuul4(
* The hasPrePage to set. p
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*/ ,6]ID1o:y
publicvoid setHasPrePage(boolean hasPrePage){ YH58p&up
this.hasPrePage = hasPrePage; %fF,Fnf2
} lZAGoR;0Ra
v(;yy{>8"
/** ]?]M5rP
* @return Returns the totalPage. z*T41;b
* #U- y<[
3
*/ "&H'?N%9Up
publicint getTotalPage(){ A_TaXl(
return totalPage; -G>J
} oO;L l?~
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/** 3m&r?xZs
* @param totalPage 8Ze>
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* The totalPage to set. c(1tOQk.
*/ 7KiraKb|
publicvoid setTotalPage(int totalPage){ N/F_,>E
this.totalPage = totalPage; _
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} N?m)u,6-l
B=*0
} IiniaVuQ
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上面的这个Page类对象只是一个完整的Page描述,接下来我写了一 W!HjO;
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个PageUtil,负责对Page对象进行构造: EPW4
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java代码: g5#LoGc
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/*Created on 2005-4-14*/ >e;jGk?-
package org.flyware.util.page; ZNH-0mk
1
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import org.apache.commons.logging.Log; ~Q=;L>Qd
import org.apache.commons.logging.LogFactory; 97 SS0J
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/** #CLjQJ
* @author Joa :g$"Xc8Zn
* dlvU=^G#G
*/ 3]1 !g6
publicclass PageUtil { 8L:AmpQdpA
mKtMI!FR
privatestaticfinal Log logger = LogFactory.getLog U;3t{~Ym
h];H]15&
(PageUtil.class); 9Pg6,[*u
;F1y!h67<
/** xppnBnu$7
* Use the origin page to create a new page +8ib928E
* @param page $G <r2lPy
* @param totalRecords [<i3l'V/[
* @return 5 `TMqrk
*/ M>=@Z*u/+
publicstatic Page createPage(Page page, int ZzK^bNx)0
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totalRecords){ zU[o_[+7^
return createPage(page.getEveryPage(), 6v{&, q
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page.getCurrentPage(), totalRecords); rZ,3:x-:
} .]exY
i
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/** v1i-O'
* the basic page utils not including exception )}$rgYKJ
Ruq;:5u
handler 3KqRw (BK
* @param everyPage !DA4q3-U>>
* @param currentPage zdem}kBIe
* @param totalRecords @G]*]rkKb
* @return page 2Rys:$
*/ U$DZht4>u
publicstatic Page createPage(int everyPage, int Wk^{Tn/]
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currentPage, int totalRecords){ FnVW%fh
everyPage = getEveryPage(everyPage); B!<B7Q
currentPage = getCurrentPage(currentPage); |{|B70v3Co
int beginIndex = getBeginIndex(everyPage, R7b-/
!L
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currentPage); M&=SvM.f
int totalPage = getTotalPage(everyPage, 7]So=%q
LTBH/[q5
totalRecords); tMdSdJ8
boolean hasNextPage = hasNextPage(currentPage, V1P]pP
?$)a[UnqX
totalPage); <9H3d7%
boolean hasPrePage = hasPrePage(currentPage); Q7pCF,;
vD2(M1Q
returnnew Page(hasPrePage, hasNextPage, :?EZ\WM7
everyPage, totalPage, Lm!]m\LRZD
currentPage, ox<6qW
C:&Sk\
beginIndex); wGMoh.GTh
} ;*K;)C
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privatestaticint getEveryPage(int everyPage){ h('5x,G%
return everyPage == 0 ? 10 : everyPage; !m=Js"
} GYy8kp84
w9u|E46
privatestaticint getCurrentPage(int currentPage){ ,c&t#mu*0
return currentPage == 0 ? 1 : currentPage; K_t >T)K
} r]}6iF.
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privatestaticint getBeginIndex(int everyPage, int 0 -M i
q
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currentPage){ VWd`06'BN'
return(currentPage - 1) * everyPage; KBi(Ns#+
} u*qI$?&
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privatestaticint getTotalPage(int everyPage, int F~fN7<9R
Ht43G_.j
totalRecords){ }X])055S
int totalPage = 0; LIJ#nb
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if(totalRecords % everyPage == 0) kDJqT
totalPage = totalRecords / everyPage; |61ns6i!
else 4TQmEM,
totalPage = totalRecords / everyPage + 1 ; nIlx?(=pu
eo;MFd%;
return totalPage; AD!w:jT9
} f"\klfrRI_
#v$wjqK5
privatestaticboolean hasPrePage(int currentPage){ -1$z=,q'
return currentPage == 1 ? false : true; }VWUcALJV
} MowAM+?^}
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privatestaticboolean hasNextPage(int currentPage, 4uE)*1
:Eh}]_
int totalPage){ GXLh(d!C
return currentPage == totalPage || totalPage == uZf
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~tL:r=
0 ? false : true; B<myt79F_[
} JSq3)o9?/
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} S,|ZCl>+
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上面的这两个对象与具体的业务逻辑无关,可以独立和抽象。 :
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面对一个具体的业务逻辑:分页查询出User,每页10个结果。具体 ?&qQOM~b-\
9%R"(X)
做法如下: nT~XctwF
1. 编写一个通用的结果存储类Result,这个类包含一个Page对象 MdEds|D
K}n.k[Do
的信息,和一个结果集List: ~[aV\r?
java代码: U7fNA7#x"
li{<F{7
'9qyf<MlY
/*Created on 2005-6-13*/ Vnb@5W2\
package com.adt.bo; e&A3=a~\s
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import java.util.List; 7On.y*
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import org.flyware.util.page.Page; $t6t 6<M)
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/** g@t..xJ,
* @author Joa B4zuWCE@
*/ ]m&Ss
publicclass Result { ?|`n&HrP
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private Page page; &eO.h%@
+|<bb8%
private List content; 7^@ 1cA=S
2=<,#7zlJ
/** } nIYNeP?D
* The default constructor L*p7|rq$"
*/ x~IrqdmW
public Result(){ .4w"3>
super(); p_zVrlVb
} V%t_,AT
I@Yk &aU
/** B"88 .U}$
* The constructor using fields iYdg1
* ;$ ]a.9
-
* @param page Hit)mwfYE
* @param content /r&4< @
*/ -J'ked
public Result(Page page, List content){ pp#!sRUKPV
this.page = page; %k"hzjXAw
this.content = content; wT3D9N.
} S,'ekWVD
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/** TgLr4Ex
* @return Returns the content. ?!c7Zx,(
*/ o5+7Lt]
publicList getContent(){ $QT% -9&
return content; E+ XR[p
} 7bVKH[
u#V;
/** q{[y4c1bG{
* @return Returns the page. gtY7N>e
*/ 4Pf"R~&[
public Page getPage(){ /7a3*a
return page; p2O [r
} 1b7?6CqV
P= E10
/** TL-ALtG
* @param content KZ=5"a
* The content to set. V.+a}J=Cw
*/ Fy>g*3
public void setContent(List content){ gId
:IR
this.content = content; 'Vhnio;qC
} 8[
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)5x$J01S
/** fkk9&QB%(
* @param page <8h3)$
* The page to set. XCez5Q1
*/ Xz/aytp~A
publicvoid setPage(Page page){ R$it`0D4o
this.page = page; t`Xx\
} hy~KY6Ta
} ^g <Lu/5w
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2. 编写业务逻辑接口,并实现它(UserManager, 11!4#z6w
a6d|Ps.\!
UserManagerImpl) f?@M"p@T
java代码: K|;L{[[yH
<BdC#t:*L
'&]6(+I>
/*Created on 2005-7-15*/ d%!yFix;<
package com.adt.service; UU#$Kt*frR
}$@K
import net.sf.hibernate.HibernateException; e&mTaCLG
@ L/i
import org.flyware.util.page.Page; \pI
,6$'
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import com.adt.bo.Result; *JWPt(bnI
kWbY&]ZO
/** (5 RZLRn
* @author Joa &k(tDP
*/ |>Pv2
publicinterface UserManager { IJ{VCzi
*@YQr]~
;
public Result listUser(Page page)throws 6iEA._y
{PL,3EBG
HibernateException;
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Kc3/*eu;
} ;~}!P7z
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1u*
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java代码: ,(+ZD@Rg
G<~P||Lu^
I%0J=V;o{
/*Created on 2005-7-15*/ #vR5a}BAk
package com.adt.service.impl; %nkbQ2^
A.!3{pAb
import java.util.List; ?CpM.{{s
NL"w#kTc()
import net.sf.hibernate.HibernateException; ;tZ 8Sh)
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import org.flyware.util.page.Page; 6U] "i
import org.flyware.util.page.PageUtil; n+'s9
Ap}`Q(.
import com.adt.bo.Result; 52*KRq
o
import com.adt.dao.UserDAO; b]WvKdq
import com.adt.exception.ObjectNotFoundException; 0B5d $0
import com.adt.service.UserManager; Ak\"C4s
.R@euIva
/** mldY/;-H!1
* @author Joa 9lX+?m~ ~
*/ (=s%>lW|
publicclass UserManagerImpl implements UserManager {
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private UserDAO userDAO; g^k=z:n3,
B=i%Z_r]w
/** ^Ov+n1,)
* @param userDAO The userDAO to set. T%2%*oa
*/
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publicvoid setUserDAO(UserDAO userDAO){ dQ Ao~]B
this.userDAO = userDAO; pf_`{2.\uO
} XP@&I[J3sI
.@Jos^rxgJ
/* (non-Javadoc) Dr#V^"Dte
* @see com.adt.service.UserManager#listUser < 'r<MA<
X*M-- *0q'
(org.flyware.util.page.Page) j1dz'G}hj
*/ w8-L2)Q}I
public Result listUser(Page page)throws RSF@ Oo{
CSE!Abg
HibernateException, ObjectNotFoundException { xT8!X5;
int totalRecords = userDAO.getUserCount(); zvbz3 a
if(totalRecords == 0) EJTa~
throw new ObjectNotFoundException S%w67sGl4n
OKNGV,{`
("userNotExist"); |Lz7}g=6
page = PageUtil.createPage(page, totalRecords); .@f)#2
List users = userDAO.getUserByPage(page); "(E%JAwZ^W
returnnew Result(page, users); 2!Pwg0%2
} $K!6T
3WY:Fn+#
} R
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FHZQyO<|
<Ow+LJWQK
vg[zRWh8
9!vimu)
其中,UserManagerImpl中调用userDAO的方法实现对User的分页查 k%({<