Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 T; 4NRC
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根
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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 1s\Wtw:
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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 )7hqJa-V
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分页支持类: ::`HQ@^
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java代码: <3nMx^
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package com.javaeye.common.util; -oGdk|Yn
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import java.util.List; Zj(AJ* r
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publicclass PaginationSupport { _YRFet[,m
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publicfinalstaticint PAGESIZE = 30; ;[ZEDF5H
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privateint pageSize = PAGESIZE;
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privateList items; `>o{P/HN
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privateint totalCount; Zpt\p7WQ
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privateint[] indexes = newint[0]; hW<%R]^|
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privateint startIndex = 0; !aUs>1i
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public PaginationSupport(List items, int cZ,b?I"Q%
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totalCount){ -OV&Md:~
setPageSize(PAGESIZE); gb1V~
setTotalCount(totalCount); L;z?aZ7n
setItems(items); rSY!vkLE\
setStartIndex(0); 9
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} RHW]Z
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public PaginationSupport(List items, int J0WxR&%a)
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totalCount, int startIndex){ +Ze}B*0
setPageSize(PAGESIZE); )D
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setTotalCount(totalCount); iI T;K@&
setItems(items); G[ PtkPSJ
setStartIndex(startIndex); #\{l"-
} E_rI?t^
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public PaginationSupport(List items, int =jN.1}
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totalCount, int pageSize, int startIndex){ As&Sq-NWf
setPageSize(pageSize); (MM]N=Tw4
setTotalCount(totalCount); yZY \MB/
setItems(items); qz_7%c]K[
setStartIndex(startIndex); iQ67l\{R
} )MVz$h{c.]
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publicList getItems(){ K-)]
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return items; >NV@R&
} zaIKdI'/e
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publicvoid setItems(List items){ /xBb[44z8
this.items = items; h8q[1"a:
} n`_{9R
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publicint getPageSize(){ dl)Y'DI
return pageSize; [\eeDa
} n&4N[Qlv,
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publicvoid setPageSize(int pageSize){ N{!i=A
this.pageSize = pageSize; K!%+0)A
} #lo6c;*m5
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publicint getTotalCount(){ 0],r0
return totalCount; 1ba~SHi
} 5DU6rks%
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publicvoid setTotalCount(int totalCount){ %A/0 '
if(totalCount > 0){ 1t~G|zhX
this.totalCount = totalCount; n+9=1Oo"
int count = totalCount / *8 A
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pageSize; /U*C\ xMm
if(totalCount % pageSize > 0) J1U/.`Oy
count++; q[_VuA]&
indexes = newint[count]; oH?b}T=9jz
for(int i = 0; i < count; i++){ xj)F55e?
indexes = pageSize * HyQJXw?A:
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i; u@)U"FZ
} t>RY7C;PuS
}else{ C==hox7b
this.totalCount = 0; iq8<ov
} ;4\2.*s
} ub0.J#j@
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publicint[] getIndexes(){ <$$yw=ef
return indexes; BwEN~2u6
} _.Nbt(mz
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publicvoid setIndexes(int[] indexes){ wWP}C D
this.indexes = indexes; &|1<v<I5
} gs[uD5oo<
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publicint getStartIndex(){ &t@jl\ND
return startIndex; Ta0|+IYk<
} ?!:ha;n
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publicvoid setStartIndex(int startIndex){ tY<4%~%X
if(totalCount <= 0) 7nTeP(M%
this.startIndex = 0; B]wk+8SMY.
elseif(startIndex >= totalCount) H2\;%K 2
this.startIndex = indexes .VJMz4$]O
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[indexes.length - 1]; 1=c\Rr9]
elseif(startIndex < 0) f}ji?p
this.startIndex = 0; 2]jn '4
else{ Sv#XIMw{,
this.startIndex = indexes %(#y5yJ ]
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[startIndex / pageSize]; {6|G@""O
} %XDc,AR[
} 'F3f+YD
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publicint getNextIndex(){ TER=*"!
int nextIndex = getStartIndex() + /9*B)m"
$9#H04.x
pageSize; V7Lxfoa4
if(nextIndex >= totalCount) 7kLz[N6Ll
return getStartIndex(); [PM2\#K
else (Z q/
return nextIndex; jD]~ AwRJ
} N^G
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publicint getPreviousIndex(){ ::lKL
int previousIndex = getStartIndex() - wu!59pL
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pageSize; zT.7
if(previousIndex < 0) X/!o\yyT
return0; @f~RdO3
else wE>\7a*P%
return previousIndex; iL&fgF"'
} 6r0krbN
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} TDKki(o=~
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抽象业务类 BwGfTua
java代码: (O?.)jEW(.
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/** X1|njJGO1
* Created on 2005-7-12 Jb@V}Ul$
*/ qPK*%Q<;
package com.javaeye.common.business; *b}HNX|
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import java.io.Serializable; Q#X8u-~
import java.util.List; Dlae;5D
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import org.hibernate.Criteria; F?*-4I-
import org.hibernate.HibernateException; ,/%=sux
import org.hibernate.Session; e0zq1XcZ
import org.hibernate.criterion.DetachedCriteria; wLH>:yKUU
import org.hibernate.criterion.Projections; bKY7/w<dP
import gIa+5\qYY
}Yzco52
org.springframework.orm.hibernate3.HibernateCallback; )JLdO*H
import x%m%_2%Z
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org.springframework.orm.hibernate3.support.HibernateDaoS Y|f[bw
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upport; Qf+\;@
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import com.javaeye.common.util.PaginationSupport; c
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public abstract class AbstractManager extends SI-q C
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HibernateDaoSupport { ^z IW+:
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privateboolean cacheQueries = false; C.yQ=\U2
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privateString queryCacheRegion; @/.;Xw]
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publicvoid setCacheQueries(boolean f!uw zHA`?
@[<><uTH
cacheQueries){ s}9S8@#
this.cacheQueries = cacheQueries; Y-_`23x`
} R6Km\N
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publicvoid setQueryCacheRegion(String '(f* 2eE:
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queryCacheRegion){ @ $ ;q;
this.queryCacheRegion = hHGoP0/o
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queryCacheRegion; Lv;^My
} %KhI>O<
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publicvoid save(finalObject entity){ 9@(PWz=`?
getHibernateTemplate().save(entity); /sx&=[
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} JN-y)L/>
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publicvoid persist(finalObject entity){ RQ'9m^
getHibernateTemplate().save(entity); ZF9z~9
} ghG**3xr
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publicvoid update(finalObject entity){ N1}sHyVq7
getHibernateTemplate().update(entity); u<tbbKM
} yy^q2P
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publicvoid delete(finalObject entity){ -hGk?_Nqa/
getHibernateTemplate().delete(entity); 6 l|DU7i
} 9k'7832u
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publicObject load(finalClass entity, /tx]5`#@7]
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finalSerializable id){ I(L,8n5
return getHibernateTemplate().load J s@hLP`
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(entity, id); )Xz,j9GzJS
} rxvx
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publicObject get(finalClass entity, 7hD>As7`/
_ @NL;w:!
finalSerializable id){ kzQ+j8.,U
return getHibernateTemplate().get GX!G>
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(entity, id); A@!qv#'
} 45@ I *`
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publicList findAll(finalClass entity){ oi&VgnSk
return getHibernateTemplate().find("from HSE!x_$
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" + entity.getName()); B
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} #C74z$
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publicList findByNamedQuery(finalString ["k,QX
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namedQuery){ Q^9_'t}X
return getHibernateTemplate / |;RV"
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().findByNamedQuery(namedQuery); {Qf=G|Ah
} H7&8\FNa
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publicList findByNamedQuery(finalString query, 9X+V4xux
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finalObject parameter){ Y1W1=Uc uk
return getHibernateTemplate urs,34h
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().findByNamedQuery(query, parameter); J9--tJ?[>o
} G#q@v(_b
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publicList findByNamedQuery(finalString query, ok"k*?Ov
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finalObject[] parameters){ b5dD/-Vj
return getHibernateTemplate E1aHKjLQ
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().findByNamedQuery(query, parameters); 6EoMt@7g
} O-0x8 O^B
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publicList find(finalString query){ r,8 [O
return getHibernateTemplate().find x/I%2F
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(query); Drgv`z
} +<Nn~1
#>("CAB02T
publicList find(finalString query, finalObject ~|DUt
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parameter){ :gv{F} ##
return getHibernateTemplate().find $u6"*|
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(query, parameter); Wa>}wA=v
} \g`\`e53?
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public PaginationSupport findPageByCriteria Z!a=dnwHz
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(final DetachedCriteria detachedCriteria){ T*/rySs
return findPageByCriteria $D~0~gn~
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); Ws3)gvpPA
} S:#lH?<_
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public PaginationSupport findPageByCriteria u
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(final DetachedCriteria detachedCriteria, finalint gS!:+G%
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startIndex){ ^,lIK+#Elz
return findPageByCriteria TPQ%L@^L+
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(detachedCriteria, PaginationSupport.PAGESIZE, htO+z7
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startIndex); : %_LpZ
} g{]0sn#
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public PaginationSupport findPageByCriteria G/y5H;<9M
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(final DetachedCriteria detachedCriteria, finalint .FP$m?
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pageSize, '6nAF
finalint startIndex){ T8?Ghbn
return(PaginationSupport) 0mYXv4
<
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getHibernateTemplate().execute(new HibernateCallback(){ sg^zH8,3
publicObject doInHibernate P8OaoPj
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(Session session)throws HibernateException { f <Zxz9
Criteria criteria = \}yc`7T:L0
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detachedCriteria.getExecutableCriteria(session); B{n,t}z
int totalCount = ANAVn@ [
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((Integer) criteria.setProjection(Projections.rowCount =g7x'
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()).uniqueResult()).intValue(); gs^Xf;gvI
criteria.setProjection VD;01"#'
F>SRs =_
(null); Y Vt% 0
List items = \i>?q
|"q5sym8Y_
criteria.setFirstResult(startIndex).setMaxResults k&M;,e3v6
f=+mIZ
(pageSize).list(); nUaJzPl
PaginationSupport ps = ^ox=HNV
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new PaginationSupport(items, totalCount, pageSize, q^@Q"J =v
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startIndex); lf`{zc r:
return ps; (q/e1L-S
} dohA0
}, true); i'<[DjMDlm
} xJpA0_xfG
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public List findAllByCriteria(final \{_q.;}
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DetachedCriteria detachedCriteria){ q_: 4w$>
return(List) getHibernateTemplate "`/h#np
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().execute(new HibernateCallback(){ +uF>2b6'
publicObject doInHibernate J'6PmPzY|
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(Session session)throws HibernateException { df8k7D;~e
Criteria criteria = l ~"^7H?4e
@-07F,'W,
detachedCriteria.getExecutableCriteria(session); @(w@e\Bq
return criteria.list(); o+iiSTJEe
} 7DogM".}~Q
}, true); 5+4IN5o]=
} Df-DRi
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public int getCountByCriteria(final a@K%06A;'
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DetachedCriteria detachedCriteria){ @Rze|
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Integer count = (Integer) Rxt^v+ ,$
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getHibernateTemplate().execute(new HibernateCallback(){ e-/&$Qq
publicObject doInHibernate ](]i 'fE>
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(Session session)throws HibernateException { BGZ#wru
Criteria criteria = *->W^1eGM
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detachedCriteria.getExecutableCriteria(session); x
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return Ys9[5@7
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criteria.setProjection(Projections.rowCount ,$L4dF3
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()).uniqueResult(); aH(J,XY
} ,Q$q=E;X
}, true); ah$b[\#C
return count.intValue(); un"Gozmt5
} & bm
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} bTNgjc
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用户在web层构造查询条件detachedCriteria,和可选的 =+-UJo5
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startIndex,调用业务bean的相应findByCriteria方法,返回一个 PcMD])Z{G
0cH`;!MZ
PaginationSupport的实例ps。 <]t%8GB2V
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ps.getItems()得到已分页好的结果集 u(.e8~s8
ps.getIndexes()得到分页索引的数组 B2vh-%63
ps.getTotalCount()得到总结果数 `:fZ)$sY
ps.getStartIndex()当前分页索引 +4~_Ei[i
ps.getNextIndex()下一页索引 ./Zk`-OBT
ps.getPreviousIndex()上一页索引 Lnl(2xD
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连续看了两篇robbin有关DetachedCriteria的介绍,感觉真的不错 l}|%5.5-
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,尤其是上面的示例代码,让我着实觉得该对我原来的分页查询做 !X#OOqPr=
!;v|' I
一下代码重构了。 m4Qh%}9%
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我把原本我的做法也提供出来供大家讨论吧: a(X@Q8l:
`UyG_;
首先,为了实现分页查询,我封装了一个Page类: '3tCH)s
java代码: FIhk@TKa
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/*Created on 2005-4-14*/ *I.f1lz%*
package org.flyware.util.page; ORw,)l
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/** '3fu
* @author Joa s?}e^/"v
* :J@gmY:C
*/ xwq
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publicclass Page { >uB#&Q
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/** imply if the page has previous page */ ^A/k)x6
privateboolean hasPrePage; g3/W=~r
83\pZ1>)_
/** imply if the page has next page */ } 9Eg=%0v
privateboolean hasNextPage; B%b4v
u'DRN,h+
/** the number of every page */ E7UU
privateint everyPage; sf87$S0
YnAm{YyI
/** the total page number */ lvz7#f L~
privateint totalPage; azp):*f("
P
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/** the number of current page */ <{cQM$#
privateint currentPage; \'D0'\:vz
@o _}g !9=
/** the begin index of the records by the current mR:uj2*
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query */ ZhaP2pC%4
privateint beginIndex; osAd1<EIC
*)T^ChD,
~Ea} /Au
/** The default constructor */ "ne?P9'hF
public Page(){ (Zrj_P`0[
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} E,U+o $
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/** construct the page by everyPage &
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* @param everyPage mSF(q78?
* */ E
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public Page(int everyPage){ WiR(;m<g
this.everyPage = everyPage; ] 72`};
} *zvx$yJ?
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/** The whole constructor */ b9HtR -iR;
public Page(boolean hasPrePage, boolean hasNextPage, 6j]0R*B7`Q
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g7`LEF <A
int everyPage, int totalPage, w``ST
int currentPage, int beginIndex){ <)c)%'v
this.hasPrePage = hasPrePage; 9IfmW^0
this.hasNextPage = hasNextPage; ~KX/
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this.everyPage = everyPage; q ^N7I@Y
this.totalPage = totalPage; l4YJ c
this.currentPage = currentPage; { @{']Y
this.beginIndex = beginIndex; Vaw+.sG`AP
} XJ|
<?
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/** %RRNJf}z
* @return G@X% +$I
* Returns the beginIndex. 051E6-
*/ |{NYkw
publicint getBeginIndex(){ oQVgyj.
return beginIndex; ,j_i?Ff
} !``,gExH
j-}O0~Jz
/** }!.(n=idZ
* @param beginIndex YZ8>OwQz2
* The beginIndex to set. 0-Ku7<a
*/ O;jrCB
publicvoid setBeginIndex(int beginIndex){ (vJNHY M
this.beginIndex = beginIndex; yjJ5>cg
} @:vwb\azVD
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/** y/7\?qfTk
* @return xdt-
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* Returns the currentPage. Q\7h`d%)
*/ -zeG1gr3
publicint getCurrentPage(){ Jk
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return currentPage; A]oV"`f
} "JV_ 2K_i
!F'YDjTot
/** wc4{)qDE
* @param currentPage V6X 0^g
* The currentPage to set. rw JIx|(
*/ s*]}QmRpr
publicvoid setCurrentPage(int currentPage){ KRRdXx\~
this.currentPage = currentPage; qqY"*uJ'
} oAeUvmh
nMUw_7Y6
/** Fk7')?
* @return Am|%lj+1z
* Returns the everyPage. aeM+ d`f
*/ :tg)p+KB
publicint getEveryPage(){ ?GR"FmB(
return everyPage; ZKTz
,
} ;h
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/** 0GCEqQy8
* @param everyPage -C]5>& W
* The everyPage to set. >KhOz[Zg
*/ nmKp[-5
publicvoid setEveryPage(int everyPage){ 9qzHS~l
this.everyPage = everyPage; WW~sNC\3`(
} p}~JgEE
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/** i<Zc"v;
* @return VjZ|$k
* Returns the hasNextPage. Qpc__dA\
*/ }WXi$(@v
publicboolean getHasNextPage(){ 7;wd(8
return hasNextPage; . 3T3EX|G
} ( ^Nz9{
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/** =m#?neop
* @param hasNextPage ;iL#7NG-R
* The hasNextPage to set. &d^m 1
*/ S;#'M![8
publicvoid setHasNextPage(boolean hasNextPage){ =dYqS[kJW
this.hasNextPage = hasNextPage; k,+0u/I
} "J_9WUN
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/** s9DYi~/,
* @return g*C7
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* Returns the hasPrePage. tl^9WG
*/ >!1-lfa8
publicboolean getHasPrePage(){ vV-`jsq20H
return hasPrePage; w%jII{@,
} A#iV=76_
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/** hT+_(>hT
* @param hasPrePage .|i.Cq8
* The hasPrePage to set. f(y:G^V
*/ S3Xl
publicvoid setHasPrePage(boolean hasPrePage){ 'e'cb>GnA
this.hasPrePage = hasPrePage; 5K8^WK
} $5%SNzzl
q#9RW(o
/** f?X)k,m
* @return Returns the totalPage. k=T\\]KxC
* ?J>
*/ )=_,O=z$K
publicint getTotalPage(){ ')<hON44EX
return totalPage; '!~)?C<
} +Q"4Migbe@
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/** >@
.
* @param totalPage &Hs!:43E-<
* The totalPage to set. 3{sVVq5Y
*/ T'Dv.h
publicvoid setTotalPage(int totalPage){ a~y'RyA
this.totalPage = totalPage; "b3"TPfK
} )R1<N
vy:Z /1q
} U26}gT)
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@?]RBX?a
5#E`=C%
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 &`2)V;t
8$Y9ORs4
个PageUtil,负责对Page对象进行构造: lA8`l>I
java代码: (V2fRv
iSs:oH3l
~q25Yx9W@
/*Created on 2005-4-14*/ q9s=~d7
package org.flyware.util.page; ;vjOUn[E
V1B5w_^>h'
import org.apache.commons.logging.Log; 8&b,qQ~
import org.apache.commons.logging.LogFactory; O)r4?<Q
WOL:IZX%
/** sdw(R#GE
* @author Joa {kR#p %E]
* > /caXvS
*/ )bscBj@
publicclass PageUtil { ][Rh28?I{
R~q]JSIC@
privatestaticfinal Log logger = LogFactory.getLog n,WqyNt*
-m~#Bq
(PageUtil.class); PALc;"]O
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/** >}6%#CAf
* Use the origin page to create a new page draN0vf
* @param page wNd isI
* @param totalRecords V)N%WXG
* @return kc&U'&RgY
*/ \(2sW^fY
publicstatic Page createPage(Page page, int sD#.Oq4&]y
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totalRecords){ 40m -ch6Q
return createPage(page.getEveryPage(), ^Xh^xL2cn
-PR N:'T
page.getCurrentPage(), totalRecords); v mk2{f,g
} '?(% Zxw%&
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/** </*6wpN
* the basic page utils not including exception >tW#/\x{
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handler o|["SYIf
* @param everyPage O3kA;[f;
* @param currentPage hM@>q&q_
* @param totalRecords X45%e!
* @return page r mg}N
*/ 7J<5f)
publicstatic Page createPage(int everyPage, int 6qnzBA7
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currentPage, int totalRecords){ Wvf
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everyPage = getEveryPage(everyPage); c\AfaK^KF
currentPage = getCurrentPage(currentPage); ;u)I\3`*!
int beginIndex = getBeginIndex(everyPage, 1bX<$>x9u
SO0PF|{\r
currentPage); [` 7ThHX
int totalPage = getTotalPage(everyPage, 20Wg=p9L
cyz3,3\e
totalRecords); r*Ca}Z
boolean hasNextPage = hasNextPage(currentPage, oXF.1f/h
vyI!]p
totalPage); }&D32\
boolean hasPrePage = hasPrePage(currentPage); U-M>=3|N
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returnnew Page(hasPrePage, hasNextPage, -nV9:opD
everyPage, totalPage, I
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currentPage, E~"y$Fqe
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beginIndex); r_A$DaC]
} vx5Zl&6r
TOQP'/
privatestaticint getEveryPage(int everyPage){ )+9Uoe~6
return everyPage == 0 ? 10 : everyPage; $~T4hv :
} <wD-qT W
{I't]Qj_e
privatestaticint getCurrentPage(int currentPage){ nAdf=D'P
return currentPage == 0 ? 1 : currentPage; |&i<bqLw:
} {"KMs[M
7-fb.V9
privatestaticint getBeginIndex(int everyPage, int }@d @3
lrIe"H@
currentPage){ `VguQl_,gA
return(currentPage - 1) * everyPage; b4N[)%@
} '}Z<h?9
' S/gmn
privatestaticint getTotalPage(int everyPage, int fe_5LC"
3%b6{ie/=
totalRecords){ GnJt0 {
int totalPage = 0; G]&qx`TBK
}Jj}%XxKs
if(totalRecords % everyPage == 0) nAlQ7'
totalPage = totalRecords / everyPage; +mT_QsLEv
else |+D!=
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totalPage = totalRecords / everyPage + 1 ; KoT%Mfu
FfT`;j
return totalPage; .8JTe0
} 88$8d>-
f]srRYSR
privatestaticboolean hasPrePage(int currentPage){ Uw<nxD/+
return currentPage == 1 ? false : true; U| R_OLWAg
} S{T >}'y
8Z=R)asGS
privatestaticboolean hasNextPage(int currentPage, |M;7>'YNC*
=[ 7A v>
int totalPage){ 8zW2zkv2|#
return currentPage == totalPage || totalPage == =41?^1\
<lJ345Q
0 ? false : true; l9Q-iJ
} ~})e?q;b
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} Y(Hs #Kn{
0?|<I{z2
*.w9c
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上面的这两个对象与具体的业务逻辑无关,可以独立和抽象。 +X
88;-
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面对一个具体的业务逻辑:分页查询出User,每页10个结果。具体 ]u/sphPe
h^P#{W!e\
做法如下: 1<aP92/N&
1. 编写一个通用的结果存储类Result,这个类包含一个Page对象 g2Z`zQA7
}3WxZv]I}
的信息,和一个结果集List: aV0"~5
java代码: ]\HvK CN}
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/*Created on 2005-6-13*/ +k R4E23:
package com.adt.bo; qwAT>4
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import java.util.List; Bdpy:'fJn
l,aay-E
import org.flyware.util.page.Page; V0 a3<6@4
aw&,S"A@
/** '8kP.l
* @author Joa ~6md !o%i
*/ )NT*bLRPQ
publicclass Result { (A.C]hD
h'nY3GrU
private Page page; EU Fa5C:
]A_`0"m.U
private List content; j3ls3H&
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/** 4E}Yt$|
* The default constructor -m#)B~)
*/ SUK?z!f<i
public Result(){ lPAQ3t!,
super(); SSzIih@u
} E2+`4g@{8<
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/** buHJB*?9
* The constructor using fields Q22 GIr
* +&H4m=D-#a
* @param page 9}
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* @param content es0hm2HT3
*/ sV*H`N')S
public Result(Page page, List content){ hOK8(U0
this.page = page; n~Lt\K:
this.content = content; Lu%b9Jk
} G=bCNn<
[()koU#w.
/** 5SQ8}Or3
* @return Returns the content. 'dc#F3
*/ e]$s
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publicList getContent(){ fI|$K)K
return content; b|(:[nB
} ]hV*r@d
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/** l;E(I_
i)
* @return Returns the page. w&.aQGR#
*/ 1k^oS$UT
public Page getPage(){ ?Q;=v~-Q
return page; 2st3
} x.4m|f0;
:Llb< MY2
/** 3PF_H$`oJ
* @param content 0PCGDLk8
* The content to set. \z ) %$#I
*/ B`sAk
%
public void setContent(List content){ ?gXp*>Kg[
this.content = content; MnHNjsO#
} ue>D7\8
/g.U&oI]D
/** .fs3>@T"#
* @param page 7uk[Oy<_
* The page to set. UC$ppTCc?
*/ yWf`rF{
publicvoid setPage(Page page){ zKK9r~ M
this.page = page; b~cZS[S
} l%=;
} MpOc
V]?R>qhgu
l}P=/#</T
|1Z)E+q*:
3__-nV
2. 编写业务逻辑接口,并实现它(UserManager, /zox$p$?h
EiaW1Cs
UserManagerImpl) wdoR%b{M
java代码: qxJ\ye+'*
dD@(z:5M\
J9 I:Q<;
/*Created on 2005-7-15*/ *=xr-!MEk
package com.adt.service; G KeU%x
4 H&#q>
import net.sf.hibernate.HibernateException; DW3G
og>uj>H&
import org.flyware.util.page.Page; 4I(Xy]wm
O&hTNIfi
import com.adt.bo.Result; BL4-7
-7|H}!DFT
/** $Z>'Jp
* @author Joa 4b`=>X;W
*/ .eC1qWZJpd
publicinterface UserManager { UL9n-M=
[.}oyz;}N
public Result listUser(Page page)throws TJ*T:?>e
\^1E4C\":
HibernateException; . 'yCw#f
$`'/+x"%
} ^/k*h J{
>5
BJ3Hf
#,v{Ihn
Z #m+ObHK1
.o}v#W+st
java代码: G]aOHJ:.
kvj#c
U`s{Jm
/*Created on 2005-7-15*/ W(/h Vt
package com.adt.service.impl; R/a*LSe@&
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import java.util.List; CTA3*Gn
(uidNq
import net.sf.hibernate.HibernateException; )=-szJjXZ
q" 5(H5
import org.flyware.util.page.Page; S`]k>'
l
import org.flyware.util.page.PageUtil; a-J.B.A$Z/
Yz93'HDB
import com.adt.bo.Result; J|rq*XD}q
import com.adt.dao.UserDAO; d<x7{?~.DK
import com.adt.exception.ObjectNotFoundException; \lNN Msd&
import com.adt.service.UserManager; v(%*b,^
-H-~;EzU
/** rU(+T0t?I
* @author Joa A+?`?pOm&
*/ Uoix
publicclass UserManagerImpl implements UserManager { BfiD9ka-z
~7Ux@Sx;
private UserDAO userDAO; Ssg&QI
YZJyk:H\
/** 9-m=*|p
* @param userDAO The userDAO to set. ^LzF@{ G
*/ _h1mF<\ X^
publicvoid setUserDAO(UserDAO userDAO){ 7 Fsay+a
this.userDAO = userDAO; @9|hMo
} PeEj&4k
U,1-A=Og{o
/* (non-Javadoc) ={Qi0Pvt
* @see com.adt.service.UserManager#listUser \z}
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+8ZF"{y
(org.flyware.util.page.Page) #A8sLkY
*/ *}W_+qo"
public Result listUser(Page page)throws cQ_Hp
<D
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HibernateException, ObjectNotFoundException { UJ6v(:z<
int totalRecords = userDAO.getUserCount(); eb$#A _m
if(totalRecords == 0) lqpp)Cq
throw new ObjectNotFoundException 1[-tD0{H
JOBhx)E
("userNotExist"); [z9Z5sLO
page = PageUtil.createPage(page, totalRecords); '@P^0+B!(.
List users = userDAO.getUserByPage(page); KJZ4AWH`
returnnew Result(page, users); +m,yA mEEd
} 2^yU ~`#
iO;
7t@]-
} ,~W|]/b<q
FJ?IUy 6
Q#zmf24W
Dv`c<+q(#
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其中,UserManagerImpl中调用userDAO的方法实现对User的分页查 u\nh[1)a)
X)3!_
询,接下来编写UserDAO的代码: RViuJ;
3. UserDAO 和 UserDAOImpl: }*"p?L^p{
java代码: "g8M0[7e3
%H"47ZFxAs
L_iFt!
/*Created on 2005-7-15*/ 7. ;3e@s
package com.adt.dao; y"wShAR
-z(+/ /K:#
import java.util.List; )w%!{hn
R*r#E{!V;
import org.flyware.util.page.Page; S|+o-[e8O
4H]L~^CD
import net.sf.hibernate.HibernateException; |P}y,pNQ
.#pU=v#/[
/** UW
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* @author Joa JqiP>4Uwm^
*/ Owk |@6!
publicinterface UserDAO extends BaseDAO { =odFmF
)53y
AyP
publicList getUserByName(String name)throws du^J2m{f
*CHX
HibernateException; *4Y Vv
(Ep\Z 6*
publicint getUserCount()throws HibernateException; !%0 *z
o{[YA}xc
publicList getUserByPage(Page page)throws IPo?:1x]s
;4~hB
HibernateException; kMd.h[X~
Q]>.b%s[
} 1&Z