Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 m"d/b~q
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 gU1 #`r>[)
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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 ~R]35Cp-#
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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 )TJS4?
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。 x83a!9
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分页支持类: 2.lgT|p
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java代码: PaO-J&<
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package com.javaeye.common.util; v]"L]/"
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import java.util.List; #sB,1"
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publicclass PaginationSupport { 7J*N_8?2
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publicfinalstaticint PAGESIZE = 30; g(hOg~S\E
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privateint pageSize = PAGESIZE; x_MJJ(q8g
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privateList items; *>q/WLR
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privateint totalCount; 'Ot,H_pE
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privateint[] indexes = newint[0]; ~i~%~doa
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privateint startIndex = 0; m:+8J,jW
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public PaginationSupport(List items, int Q2|p\rO
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totalCount){ Pbu{'y3J
setPageSize(PAGESIZE); gTf|^?vd
setTotalCount(totalCount); oPQtGl p
setItems(items); [xZU!=
setStartIndex(0); OMrc_)he\
} $V>yXhTh
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public PaginationSupport(List items, int {b)~V3rsY
)2e#HBnH
totalCount, int startIndex){ Vb|#MNf)
setPageSize(PAGESIZE); ZC0-wr\
setTotalCount(totalCount); g"_C,XN
setItems(items); `#mK*Buem}
setStartIndex(startIndex); oG oK,
} Shr,#wwM`B
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public PaginationSupport(List items, int G"SBYU
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totalCount, int pageSize, int startIndex){ NjuiD].
setPageSize(pageSize); R^#@lI~
setTotalCount(totalCount); OE`X<h4r
setItems(items); SA"p\}"
setStartIndex(startIndex); <|B1wa:|
} Q \hY7Xq'
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publicList getItems(){ p0:kz l4$
return items; OO) ~HV4\
} +IFw_3$
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publicvoid setItems(List items){ #Pk$L+C
this.items = items; v Gy8Qu>
} i[jJafAcN
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publicint getPageSize(){ 6xK[34~6
return pageSize; <Zb/
} ,:Z^$
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publicvoid setPageSize(int pageSize){ oqd;6[%G
this.pageSize = pageSize; G6 0S|d
} YwEpy(}hJm
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publicint getTotalCount(){ yay<GP?
return totalCount; YZf6|
} &[vw 0N-
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publicvoid setTotalCount(int totalCount){ Sjj>#}U
if(totalCount > 0){ =8Jfgq9E
this.totalCount = totalCount; =T?}Nt
int count = totalCount / :M3oUE{
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pageSize; }L=/A7Nk>
if(totalCount % pageSize > 0) N"tFP9;K
count++; sic"pn],U
indexes = newint[count]; OR1DYHHT/1
for(int i = 0; i < count; i++){ y&~w2{a
indexes = pageSize * Vv.r8IGYm
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i; * |.0Myjo
} tC?=E#3V
}else{ s8"8y`u
this.totalCount = 0; MM_k
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} #p(h]T32
} Fxs;Fp
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publicint[] getIndexes(){ `:8J46or
return indexes; pIV-kI:w
} olB)p$aH#
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publicvoid setIndexes(int[] indexes){ \*hrW(
this.indexes = indexes; PX:'/{V
} Ks^6.)
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publicint getStartIndex(){ ?lGG|9J\
return startIndex; F_iXd/
} b
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publicvoid setStartIndex(int startIndex){ rEhX/(n#
if(totalCount <= 0) H={DB
this.startIndex = 0; \J. .*,'
elseif(startIndex >= totalCount) 9_s6l
this.startIndex = indexes :o-,SrORM
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[indexes.length - 1]; :K`ESq!8u
elseif(startIndex < 0) RoA?p;]<
this.startIndex = 0; W:,4 :|3
else{ 9O`
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this.startIndex = indexes 6fH@wQ"wN
q\Q{sv_
[startIndex / pageSize]; TNCgaTJ{h
} #4MBoN(3
} <9E0iz+j
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publicint getNextIndex(){ O<PO^pi
int nextIndex = getStartIndex() + 6vuq1
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pageSize; LZJA4?C
if(nextIndex >= totalCount) Ee)[\Qjn
return getStartIndex(); =L%DX#8
else kIw`P[
return nextIndex; )[H{yQ
} OaJB=J%
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publicint getPreviousIndex(){ ~\ ,w {
int previousIndex = getStartIndex() - WV3|?,y]qm
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pageSize; ZUz ^!d
if(previousIndex < 0) Re:jVJgBz
return0; bmN q[}
else 7{e{9QbJ4
return previousIndex; H gTUy[(
} 3!Sp0P
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} iHwLZ[O{
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抽象业务类 /,!qFt
java代码: pi=-#g(2
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/** LmlXMia
* Created on 2005-7-12 E$W{8?:{
*/ w%WF-:u7|
package com.javaeye.common.business; }X x(^Zh
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import java.io.Serializable; ;\EiM;Q]
import java.util.List; CTWn2tpW
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import org.hibernate.Criteria; mj|)nOd
import org.hibernate.HibernateException; j4?@(u9;j
import org.hibernate.Session; CkJCi
import org.hibernate.criterion.DetachedCriteria; 7.DtdyM
import org.hibernate.criterion.Projections; ,Jc m+Wb
import ^w ] /
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org.springframework.orm.hibernate3.HibernateCallback; S3L~~X/=
import obdFS,JxxG
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org.springframework.orm.hibernate3.support.HibernateDaoS %6AW7q
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upport; R'kyrEO
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import com.javaeye.common.util.PaginationSupport; /R>nr"
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public abstract class AbstractManager extends |F9z,cc"
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HibernateDaoSupport { :2njp%
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privateboolean cacheQueries = false; wApMzZ(X2y
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privateString queryCacheRegion; ,J`'Y+7W
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publicvoid setCacheQueries(boolean d
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cacheQueries){ ix#epuN
this.cacheQueries = cacheQueries; nXjPx@
} F4<O2!V
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publicvoid setQueryCacheRegion(String e/->_T(I
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queryCacheRegion){ h3T9"w[
this.queryCacheRegion = 9f\/\L
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queryCacheRegion; 7'
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} =)hVn
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publicvoid save(finalObject entity){ O?<&+(uMTT
getHibernateTemplate().save(entity); _EF&A-kX|u
} Oy 2+b1{
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publicvoid persist(finalObject entity){ '#(v=|J
getHibernateTemplate().save(entity); )K'N(w
} %pXAeeSY`;
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publicvoid update(finalObject entity){
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getHibernateTemplate().update(entity); -l%J/ :
} |+`c3*PV
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publicvoid delete(finalObject entity){ 5OoN!TEM
getHibernateTemplate().delete(entity); }du XC[ 6
} :VF<9@t
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publicObject load(finalClass entity, OgF+OS
w
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finalSerializable id){ gKOOHUCb
return getHibernateTemplate().load ,;M4jc{
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(entity, id); ~EK'&Y"1
} lo'W1p
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publicObject get(finalClass entity, F@R1:M9*
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finalSerializable id){ Q[+ac*F=Y
return getHibernateTemplate().get >Z1q j>
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(entity, id); WcC?8X2
} JWA@+u*k
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publicList findAll(finalClass entity){ [frq
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return getHibernateTemplate().find("from ",{ibh)g$`
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" + entity.getName()); 3pmWDG6L
} KFa_
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publicList findByNamedQuery(finalString 0@2mXO9f"
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namedQuery){ %%cHoprDa
return getHibernateTemplate 3_q3Bk
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().findByNamedQuery(namedQuery); kD[ r.Dma
} nI0[;'Hn,
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publicList findByNamedQuery(finalString query, k1VT /u
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finalObject parameter){ ~q&pF"va8
return getHibernateTemplate .'a&33J
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().findByNamedQuery(query, parameter); 7bDHXn
} ]0L&v7[
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publicList findByNamedQuery(finalString query, *Sh^J+j
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finalObject[] parameters){ *'"^NSJ
return getHibernateTemplate |AC1\)2tT
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().findByNamedQuery(query, parameters); %7O?JI[
} uIU5.\"s
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publicList find(finalString query){ ""Q1|
return getHibernateTemplate().find v`1,4,;,qs
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(query); }-~T<egF
} LL$_zK{
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publicList find(finalString query, finalObject R-^96fFBy
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parameter){ 3OM2Y_
return getHibernateTemplate().find I5h[%T
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(query, parameter); mw5?[@G-
} h_d<!
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public PaginationSupport findPageByCriteria .G o{1[
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(final DetachedCriteria detachedCriteria){ 5[n(7;+gw
return findPageByCriteria gl&5l1&
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); tTU=+*Io
} P9T5L<5
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public PaginationSupport findPageByCriteria e*j.
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(final DetachedCriteria detachedCriteria, finalint lD{Aa!\
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startIndex){ {D g_?._d
return findPageByCriteria &QNWL]
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(detachedCriteria, PaginationSupport.PAGESIZE, w{k)XY40sW
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startIndex);
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} cQ:"-!ff
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public PaginationSupport findPageByCriteria ;+1RUv
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(final DetachedCriteria detachedCriteria, finalint ~8aJ S,u
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pageSize, nL:SG{7
finalint startIndex){ Zf7&._y.
return(PaginationSupport) hp"L8w
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getHibernateTemplate().execute(new HibernateCallback(){ R}mn*h6
publicObject doInHibernate ^s.V;R
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(Session session)throws HibernateException { n&MG7`]N
Criteria criteria = e?bYjJq
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detachedCriteria.getExecutableCriteria(session); +h_ !0dG
int totalCount = U:F/iXz
4.RG4Jq
((Integer) criteria.setProjection(Projections.rowCount jPnM>=
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()).uniqueResult()).intValue(); NA,CZ
criteria.setProjection c#N<"cy>
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(null); !EQ@#qW/
List items = 3sCFHn#c
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criteria.setFirstResult(startIndex).setMaxResults r6'UUu
E2L(wt}^
(pageSize).list(); q2:K4
PaginationSupport ps = Q
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new PaginationSupport(items, totalCount, pageSize, ^KB~*'DN~s
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startIndex); . |*f!w}5
return ps; '&;yT[
} aQ j*KMc
}, true); rwIeqV{:
} i*R,QN)
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public List findAllByCriteria(final R_sC! -
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DetachedCriteria detachedCriteria){ 8vk..!7n}
return(List) getHibernateTemplate ,7,g%?_P
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().execute(new HibernateCallback(){ e4OeoQ@ >
publicObject doInHibernate _ .i3,-l)
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(Session session)throws HibernateException { B5X sGLV
Criteria criteria = J/);"bg_O
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detachedCriteria.getExecutableCriteria(session); 9{j66
return criteria.list(); c.\O/N
} 9t@:4O
}, true); ~](fFa{
} OPBt$Ki
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public int getCountByCriteria(final z=&z_}M8
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DetachedCriteria detachedCriteria){ }Vu\(~
Integer count = (Integer) 6I_Hd>4
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getHibernateTemplate().execute(new HibernateCallback(){ {5*|C-WWtG
publicObject doInHibernate XS~- vF
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(Session session)throws HibernateException { iAMtejw
Criteria criteria = 6{d6s#|%
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detachedCriteria.getExecutableCriteria(session); t)oa pIeIe
return "x'),
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criteria.setProjection(Projections.rowCount !S%6Uzsj
&p<(_|Af
()).uniqueResult(); BcA31%
} +5v}q.:+
}, true); #$vRJ#S}U
return count.intValue(); &@"]+33
} ?B.~AUN
} G)>W'yxQ
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用户在web层构造查询条件detachedCriteria,和可选的 NkxCs
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startIndex,调用业务bean的相应findByCriteria方法,返回一个 PU9`<3z5
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PaginationSupport的实例ps。 U3vEdw<lV
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ps.getItems()得到已分页好的结果集 5=?i;P
ps.getIndexes()得到分页索引的数组 AV&yoag1
ps.getTotalCount()得到总结果数 .DJDpP)M
ps.getStartIndex()当前分页索引 f<y&\'3
ps.getNextIndex()下一页索引 bAxTLIf
ps.getPreviousIndex()上一页索引 D 7shiv|,
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连续看了两篇robbin有关DetachedCriteria的介绍,感觉真的不错 $7I]`Jt
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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 9Z\z96O-
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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: z)F#u:t
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首先,为了实现分页查询,我封装了一个Page类: juToO
java代码: rlok%Rt4Z
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/*Created on 2005-4-14*/ {g/wY%u=
package org.flyware.util.page; dGH_ z8
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/** P`s(kIe
* @author Joa Ri:p8
* DOD6Liau{Q
*/ FN"rZWM
publicclass Page { +?-qfp,:0
w`yx=i#
/** imply if the page has previous page */ 6X+}>qy
privateboolean hasPrePage; 67<CbQZoN3
`rWB`q|i<
/** imply if the page has next page */ CKARg8o
privateboolean hasNextPage; 6i@ub%qq
4 9w=kzo
/** the number of every page */ Oo%!>!Lt,
privateint everyPage; 3
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EHf)^]Z
/** the total page number */ sV0Z
privateint totalPage; l%"`{
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/** the number of current page */ ;:#U6?=t
privateint currentPage; c]Unbm^w
&>}.RX]t
/** the begin index of the records by the current ;cSGlE |
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query */ +}!DP~y+
privateint beginIndex; }X1.Wt=?
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/** The default constructor */ 9\51Z:>
public Page(){ J6|JWp
C@@$"}%v2
} AF#_nK)@
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"
/** construct the page by everyPage 'tWAu I
* @param everyPage o<4D=.g7D
* */ [%.18FWI
public Page(int everyPage){ $^vP<
this.everyPage = everyPage; ;e;\q;GP
} >_Uj?F:
>iy^$bqF
/** The whole constructor */ >a]t<
public Page(boolean hasPrePage, boolean hasNextPage, ' Js?N
eOrYa3hQ
)bW5yG!
int everyPage, int totalPage, N_vXYaY
int currentPage, int beginIndex){ ;/Q6i
this.hasPrePage = hasPrePage; \REc8nsLy
this.hasNextPage = hasNextPage; ^pcRW44K
this.everyPage = everyPage; ?iln<%G
this.totalPage = totalPage; @%B4;c
this.currentPage = currentPage; qyv"Wb6+
this.beginIndex = beginIndex; :GL7J6
} RWE~&w G}
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/** q:yO92Ow
* @return Xu]h$%W
* Returns the beginIndex. 1pCkWe
*/ `C<F+/q
publicint getBeginIndex(){ $9i9s4u^
return beginIndex; PRpE$`WK
} p37|zX
^gm>!-Gx
/** A7'b Nd6f9
* @param beginIndex 5^F]tRz-
* The beginIndex to set. fOW_h
*/ i`~~+6`J
publicvoid setBeginIndex(int beginIndex){ + zDc
this.beginIndex = beginIndex; 6$z'wy/*
} 4g!7
4a
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/** n#>5?W
* @return `cO|RhD@
* Returns the currentPage. no3Z\@%
*/ cj^bh
publicint getCurrentPage(){ Qu}N:P9l?X
return currentPage; %]GV+!3S
} )OUU]MUH
c! ~T2t
/** c(:Oyba
* @param currentPage b]K>vhQV
* The currentPage to set. WY.5K
=}
*/ U3VT*nj'
publicvoid setCurrentPage(int currentPage){ S>EDL
this.currentPage = currentPage; E!dp~RwZu
} ;Xh5oB\)W
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/** cyb(\ fsC
* @return \>;%Ji
* Returns the everyPage. &E]"c]i+
*/ <{ #<5 8
publicint getEveryPage(){ tj#b_u z
return everyPage; [)iN)$Mv
} qzlER
t[j9R#02?
/** 2$DSBQEx
* @param everyPage BJIFl!w
* The everyPage to set. _Ff".t<"
*/ 7?"9J`*
publicvoid setEveryPage(int everyPage){ ]0YDb~UB
this.everyPage = everyPage; hG~ Uz
} +WdL
4L$};L
/** i]@c.QiFN
* @return YR8QO-7
.)
* Returns the hasNextPage. pLJeajv)z
*/ |DGCdB|`G
publicboolean getHasNextPage(){ :W%4*-FP
return hasNextPage; 7H?!RYrx
} Q6|@N~UeZ
@aUZ#,(<
/** 'yeh7oR
* @param hasNextPage aLHrl6"
* The hasNextPage to set. oo'iwq-\
*/ |} 9GHjG
publicvoid setHasNextPage(boolean hasNextPage){ VHj*aBHB
this.hasNextPage = hasNextPage; kw;wlFU;
} (Otur
v<`$bvv?
/** Pd,!&
* @return $4:~*IQ
* Returns the hasPrePage. XC2Q*Z
*/ ]Qc: Zy3
publicboolean getHasPrePage(){ X)y*#U
return hasPrePage; b2W; |
} J:[3;Z
@NBXyC8,Z
/** LsnXS9_
* @param hasPrePage }Uq/kei^P
* The hasPrePage to set. |:}L<9Sq
*/ 0x6@{0
publicvoid setHasPrePage(boolean hasPrePage){ }:"R-s
this.hasPrePage = hasPrePage; /T{mS7EpYc
} sbpu
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w
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/** z^"?sd
* @return Returns the totalPage. $/os{tzjd
* cx<h_
*/ DU(X,hDBF
publicint getTotalPage(){ Scf.4~H 0
return totalPage; ;Xz(B4 N~o
} 1ME|G"$ ;
!(}OBZ[*
/** 9B&
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* @param totalPage >&g2 IvDS
* The totalPage to set. 0;'j!`l9
*/ Cnk#Ioz
publicvoid setTotalPage(int totalPage){ _%XbxP6rH
this.totalPage = totalPage; eN Hpgj
} "ngSilH?D
/Lj%A
} qNhH%tYQ
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&qG?[R{
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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 -<H ri5
6Uch0xha!
个PageUtil,负责对Page对象进行构造: p^}L
java代码: ^"PfDTyA
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#vnefIcBf
/*Created on 2005-4-14*/ <d3PDO@w/
package org.flyware.util.page; 4,o
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`e4o 1*
import org.apache.commons.logging.Log; ZE{aS4c
import org.apache.commons.logging.LogFactory; dVij <! Lu
r{bgTG
/** ?L`MFR
* @author Joa I=Gr^\x=
* "tEj`eR
*/ \z&03@Sw
publicclass PageUtil { J{aQ1)
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privatestaticfinal Log logger = LogFactory.getLog &E} I
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(PageUtil.class); 0-6:AHix
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/** qQwJJjf
* Use the origin page to create a new page y^5T/M
* @param page Zb12:?
* @param totalRecords Cmp{F N"o
* @return R?1idl)
*/ "6 uTo0
publicstatic Page createPage(Page page, int ee4KMS
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totalRecords){ : Bdi pc
return createPage(page.getEveryPage(), @&/s~3
(jD'+ "?
page.getCurrentPage(), totalRecords);
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} J
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/** @2-Hj~
* the basic page utils not including exception s|fCR
jAD+:@
handler ~Rx~g
* @param everyPage BYhmJC|
* @param currentPage -6.i\
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* @param totalRecords =vB]*?;9
* @return page PT
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*/ F5:2TEA
publicstatic Page createPage(int everyPage, int T)$6H}[c
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currentPage, int totalRecords){ R !:eYoQ
everyPage = getEveryPage(everyPage); OqAh4qa,$
currentPage = getCurrentPage(currentPage); m70`{-O
int beginIndex = getBeginIndex(everyPage, @]?? +f}#
:mCw.Jz<h
currentPage); LZ=wz.'u
int totalPage = getTotalPage(everyPage, 7C,<iY
# CP9^R S
totalRecords); 7UeE(=Hr5
boolean hasNextPage = hasNextPage(currentPage, ,n
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A52LH,
totalPage); [XA&&EcU
boolean hasPrePage = hasPrePage(currentPage); uOivnJ?
=%:n0S0C"
returnnew Page(hasPrePage, hasNextPage, 'qD'PLV
everyPage, totalPage, a+4`}:KA#
currentPage, =!I8vQ>
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beginIndex); ^?sSsHz
} =H.<"7
0{^l2?mgSb
privatestaticint getEveryPage(int everyPage){ rw40<SS"Z
return everyPage == 0 ? 10 : everyPage; 9XJ9~I?
} PU]7c2.y
{Oc?C:aI=
privatestaticint getCurrentPage(int currentPage){ : pE-{3I
return currentPage == 0 ? 1 : currentPage; u`L!za7fi
} |g: '')>[
X-*KQ+?
privatestaticint getBeginIndex(int everyPage, int {Kq*5Aq8
mTrI""Jsu;
currentPage){ .>AFf9P
return(currentPage - 1) * everyPage; Q+y-*1
} ;:8jxkx6%
e$p1Th*|]4
privatestaticint getTotalPage(int everyPage, int Sh~ 8jEk
JWUv H
totalRecords){ vJ# rW8y
int totalPage = 0; wHo#%Y,Nmi
_^ CQ*+F
if(totalRecords % everyPage == 0) n{qa ]3
totalPage = totalRecords / everyPage; dcrJ,>i}
else sTYuwna~
totalPage = totalRecords / everyPage + 1 ; U:etcnb4w>
dZ;~b(CA
return totalPage; #V(Hk )
} dH2j*G Ij
//'xR8Z
privatestaticboolean hasPrePage(int currentPage){ ATXx?
b8h
return currentPage == 1 ? false : true; ?=|)n%
} fxtYo,;$
@'NaA SB
privatestaticboolean hasNextPage(int currentPage, @4
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int totalPage){ 8+g|>{Vov
return currentPage == totalPage || totalPage == };VGH/}&s
^~YmLI4
0 ? false : true; JJbM)B@-
} Q%AS;(d
2jrX
9^C!,A{u4
} ^c[CyZ:a
=w;xaxjL
n)wpxR
#IL~0t
)n3biQL_
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。 4%c7#AX[T
B9;,A;E};
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 9cw4tqTm
8'g*}[
做法如下: ?[L0LL?ce
1. 编写一个通用的结果存储类Result,这个类包含一个Page对象 Jb)eC?6O
@]VvqCk
的信息,和一个结果集List: y!{/'{?P
java代码: #Ko+_Hm?4
40l#'< y;
NNREt:+kr
/*Created on 2005-6-13*/ g^<q L|
package com.adt.bo; ke;*uS
d= T9mj.@
import java.util.List; ]=
QCCC
+_|cZlQ&
import org.flyware.util.page.Page; E#HU?<q8
_>:=<xyOq
/** }mT%N eS
* @author Joa aBA#\eV
*/ (1r>50Ge
publicclass Result { W<Vzd4hR
@ T~#Gwv
private Page page; {$QF*j
IG3K Pmu
private List content; 7+Jma! o
X-2S*L'
/** Xm:gD6;9
* The default constructor efAahH
*/ XtH_+W+O
public Result(){ +/_B/[e<>
super(); U*+!w@
.
} ^$s~qQQ}B
Iz$W3#hi
/** J'Mgj$T $
* The constructor using fields Uub%s`O
* gJ[q
{b
* @param page 'r?HL;,q
* @param content MFdFZkpiV
*/ eJ)KE5%n#
public Result(Page page, List content){ 0f#a_
this.page = page; ]zR;%p
this.content = content; XGup,7e9
} 0|+hm^'_
:M?')
/** $v}8lBCr3
* @return Returns the content. ThqfZl=V
*/ a!J ow?(
publicList getContent(){ L4A/7Ep
return content; +q,n}@y=
} #?|1~HC
@aPu}Hi
/** n~>CE"q
* @return Returns the page. ~aq?Kk
*/ 0-MasI&b
public Page getPage(){ +mQC:B7>
return page; G`JwAy r'
} yLa5tv/
"E[*rnsLN
/** n YMf[kW
* @param content Cq;K,B9
* The content to set. <IkD=X
*/ BMsy}08dQ
public void setContent(List content){ wk
<~Y 3u
this.content = content; iO= uXN1g
} Ue\oIi
Q\>SF
/** cW|Zgz8vv
* @param page n7!Lwq2
* The page to set. lJQl$Wx^
*/ 7/$Z7J!k
publicvoid setPage(Page page){ v&/-&(+
this.page = page; zSvHv s
} ](6vG$\
} @KRn3$U
^0?cyv\>LA
]` Gz_e
QR"O)lP
n_NG~/x
2. 编写业务逻辑接口,并实现它(UserManager, )^@V*$D
%Bu n@
UserManagerImpl) [-94=|S @
java代码: iW%0pLn
,7$uh):
Dq1XZ%8
/*Created on 2005-7-15*/ 3:gO7Uv
package com.adt.service; v@1Jhns
Hw. @Le>
import net.sf.hibernate.HibernateException; `,]PM)iC
ZjbG&oc
import org.flyware.util.page.Page; XlcDF|?{.
Evgq}3
import com.adt.bo.Result; 0JL6EL>_
k.f:nv5JO
/** iP\&fZY_
* @author Joa 1UWgOCc
*/ EC\:uK
publicinterface UserManager { gK_[3FiKt
b6M)qt9R
public Result listUser(Page page)throws iYs?B0*JWK
:h dh$}y
HibernateException; %lW:8ckL
t-m,~Io W
} ~l(tl[
B9Tztg
&IY_z0=
'"p*FN
| Dpfh
java代码: p%tg->#L
90k|u'ikOp
rSCX$ @@F
/*Created on 2005-7-15*/ `%:(IGxz
package com.adt.service.impl; Yzx0 [_'u
4T\/wyq0
import java.util.List; ^u&Khc~
y
WC; a
import net.sf.hibernate.HibernateException; jmVy4* P_
eC:Q)%$%l
import org.flyware.util.page.Page; iz5wUyeg
import org.flyware.util.page.PageUtil; W%QtJB1)
~TIZumGB
import com.adt.bo.Result; TmH13N]
import com.adt.dao.UserDAO; hds4_
import com.adt.exception.ObjectNotFoundException; #u(,#(P'#
import com.adt.service.UserManager; AdW7 vn
&Y2P! \\2
/** -zkL)<7
* @author Joa ``CADiM:S
*/ vK~KeZ\,p=
publicclass UserManagerImpl implements UserManager { OvG |=
wA&)y>n-
private UserDAO userDAO; Y\S^DJy
_qNLy/AY
/** )f&]H}
* @param userDAO The userDAO to set. r}Av"
*/ Av4E?@R
publicvoid setUserDAO(UserDAO userDAO){ l~c>jm8.
this.userDAO = userDAO; e!'u{>u
} (19<8a9G
u6d~d\
/* (non-Javadoc) 4=cq 76
* @see com.adt.service.UserManager#listUser YIqfGXu8
^PpFI
(org.flyware.util.page.Page) BVeNK=7m%
*/ }-iOYSn
public Result listUser(Page page)throws kfECC&"
]`9K|v
HibernateException, ObjectNotFoundException { =%G[vm/-)
int totalRecords = userDAO.getUserCount(); qE=OQs9
if(totalRecords == 0) Lwk-
throw new ObjectNotFoundException W4Q]<<6&
' "
yl>"
("userNotExist"); be@uHikp;v
page = PageUtil.createPage(page, totalRecords); 3o^M%
List users = userDAO.getUserByPage(page); <-aI%'?*
returnnew Result(page, users); TnAX;+u
} _@76eZd
j)*nE./3
} 5nb6k,+E
6[7k}9`alz
IQv>{h}
o)WSMV(&f
,Yz+?SmSZ&
其中,UserManagerImpl中调用userDAO的方法实现对User的分页查 =1Jo-!{{
VHNiTp
询,接下来编写UserDAO的代码: }Cf[nGh|B
3. UserDAO 和 UserDAOImpl: C>ZeG
Vq
java代码: !-~(*tn
[GM<Wt0
^q2zqC
/*Created on 2005-7-15*/ ywte\}
package com.adt.dao; ZeV)/g,w
??Ac=K\
import java.util.List; 1^dWmxUZH
eQj/)@B:V
import org.flyware.util.page.Page; 4VgDN(n0@
P^-9?uBno
import net.sf.hibernate.HibernateException; #IDCCD^1=
UlytxWkUX
/** >^N:A
* @author Joa `;@4f|N9
*/ PD4E&k
publicinterface UserDAO extends BaseDAO { JnJz{(c
KYN{iaj
publicList getUserByName(String name)throws N4-J !r@#~
,iUx'U
HibernateException; 4pv:u:Z
&.B6P|N'
publicint getUserCount()throws HibernateException; IrC=9%pd$R
L;`t%1
publicList getUserByPage(Page page)throws c
@R6p+
Z]d]RL&r
HibernateException; qI@_
2=EKAg=S
} Ymom 0g+f
YvX I
[*t EHW
v(~m!8!TI
*E'K{?-K
java代码: wt;aO_l
xkovoTzV
FeLP!oS>
/*Created on 2005-7-15*/
V;jz0B
package com.adt.dao.impl; 7/L7L5h<
*_wBV
M=2
import java.util.List; :_*Q
IyW
4fswx@l
import org.flyware.util.page.Page; Pa<