Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 _=q!
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 etoo
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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 "*;;H^d
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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 @h*fFiY&{
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分页支持类: UjOB98Du
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java代码: Y!WG)u5
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package com.javaeye.common.util; C-8qj>
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import java.util.List; M:P0m6ie
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publicclass PaginationSupport { avy"r$v_&
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publicfinalstaticint PAGESIZE = 30; dJv!Dts')C
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privateint pageSize = PAGESIZE; FSRm|
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privateList items; +rIL|c}J
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privateint totalCount; >(y<0
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privateint[] indexes = newint[0]; *=fr8
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privateint startIndex = 0; U|HB=BP
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public PaginationSupport(List items, int `fNG$ODL
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totalCount){ Hg9CZMko
setPageSize(PAGESIZE); h(qQsxIOhS
setTotalCount(totalCount); L{E^?iX
setItems(items); kNT}dv]<
setStartIndex(0); VdP`a(Yd;
} i/b'4o=8
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public PaginationSupport(List items, int l<Q>N|1#k%
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totalCount, int startIndex){ rCS#{x
setPageSize(PAGESIZE); ^m/14 MN|
setTotalCount(totalCount); zE)~0v4
setItems(items); Fb/XC:AD
setStartIndex(startIndex); MG /,==
} tTN?r 8
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public PaginationSupport(List items, int +[J/Zw0{
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totalCount, int pageSize, int startIndex){ BYY RoE[P
setPageSize(pageSize); bu&t'?zx!
setTotalCount(totalCount); aF|d^
setItems(items); A:y.s;<L0
setStartIndex(startIndex); c}[+h5
} 4d_s%n?C
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publicList getItems(){ >a1{397Y}
return items; ;.wX@
} n6(i`{i
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publicvoid setItems(List items){ "lNzGi-H
this.items = items; ]I/Vb s
} ~^^ NHq
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publicint getPageSize(){ >K# ,cxY
return pageSize; OG3/-K 8R
} \<vNVz7.D
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publicvoid setPageSize(int pageSize){ W>M~Sk$v
this.pageSize = pageSize; VD4C::J
} 7ZUiY
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publicint getTotalCount(){ $|KaBx1
return totalCount; ;NV'W]
} L:M0pk{T
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publicvoid setTotalCount(int totalCount){ PuxK?bwC
if(totalCount > 0){ k>E`s<3
this.totalCount = totalCount; |3K)$.6~
int count = totalCount / .$",
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pageSize; JaWv]@9*
if(totalCount % pageSize > 0) hJ5z/5aE;
count++; 3`HnLD/
indexes = newint[count]; w(1Gi$Z(Q)
for(int i = 0; i < count; i++){ p.fF}B
indexes = pageSize * ED$DSz)x
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} `>D9P_Y"jI
}else{ 7%OKH<i\2<
this.totalCount = 0; 6zIgQ4Bp24
} kC$&:\Rh
} u)Q;8$`
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publicint[] getIndexes(){ ^D@b;EyK
return indexes; ig 0u^BC
} Q36)7=at
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publicvoid setIndexes(int[] indexes){ :L0/V~D
this.indexes = indexes; Lc<eRVNd,
} %lr|xX
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publicint getStartIndex(){ lH|LdlX
return startIndex; )[&_scSa
} @\(v X ]
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publicvoid setStartIndex(int startIndex){ OlxX.wP
if(totalCount <= 0) Q\{x)|{$
this.startIndex = 0; &"uV~AM
elseif(startIndex >= totalCount) w W$(r-
this.startIndex = indexes ovf/;Q/}
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[indexes.length - 1]; &jV_"_3n
elseif(startIndex < 0) r)1Z(tl
this.startIndex = 0; 1xnLB>jP#
else{ G>T')A
this.startIndex = indexes l{P\No
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[startIndex / pageSize]; V'Qn sI
} km:nE: |
} %@ mGK8
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publicint getNextIndex(){ Z\>, ),O
int nextIndex = getStartIndex() + cJn HW
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pageSize; }xn_6
if(nextIndex >= totalCount) vxN0,l
return getStartIndex(); Cd#E"dY6
else q]4pEip
return nextIndex; K2'O]#
} Jd
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publicint getPreviousIndex(){ V7=SV:+1or
int previousIndex = getStartIndex() - kpfwqHT
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pageSize; FE5Q?*Ea
if(previousIndex < 0) N4^5rrkL
return0; 0vs0*;F;
else (7$$;
return previousIndex; }dSFAKI2dM
} =~FG&rk^
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} ^E>CGGS4
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抽象业务类 I#A2)V0P)
java代码: (!K+P[g
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/** +p:Y=>bTj
* Created on 2005-7-12 eE:&qy^
*/ LhJ a)jFQ
package com.javaeye.common.business; aSaAC7sFk
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import java.io.Serializable; k1N$+h
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import java.util.List; B0mLI%B
gb-{2p>}
import org.hibernate.Criteria; Yx?aC!5M
import org.hibernate.HibernateException; -rY 7)=
import org.hibernate.Session; Ya4?{2h@+
import org.hibernate.criterion.DetachedCriteria; M^SuV
import org.hibernate.criterion.Projections; 2M6dMvS
import ~I_owCVZ
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org.springframework.orm.hibernate3.HibernateCallback; 9q4_j
import zjM/M
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org.springframework.orm.hibernate3.support.HibernateDaoS |KG&HNfP-
IS_Su;w>4
upport; 8:g!w:$x
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import com.javaeye.common.util.PaginationSupport; )&1!xF
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public abstract class AbstractManager extends VQ
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HibernateDaoSupport { 9R]](g#
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privateboolean cacheQueries = false; +g\;bLT
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privateString queryCacheRegion; ubGs/Vzye
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publicvoid setCacheQueries(boolean LM,fwAX
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cacheQueries){ [e4![G&y`
this.cacheQueries = cacheQueries; 6$e]i|e
} G%hO\EO
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publicvoid setQueryCacheRegion(String 8$~3r a
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queryCacheRegion){ ( tn<
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this.queryCacheRegion = h`?k.{})M
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queryCacheRegion; M<oA<#IW
} xdF guV8
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publicvoid save(finalObject entity){ ToU.mM?f^
getHibernateTemplate().save(entity); #8?^C]*{0
} };SV!'9s?~
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publicvoid persist(finalObject entity){ :EB,{|m
getHibernateTemplate().save(entity); dB)[O9K)
} %,? vyY
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publicvoid update(finalObject entity){ ZgF/;8!~V-
getHibernateTemplate().update(entity); 76MsrOv55
} 1_3?R}$Wl
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publicvoid delete(finalObject entity){ fv==Gu%{
getHibernateTemplate().delete(entity); @36S}5Oa
} zh?4K*>.k
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publicObject load(finalClass entity, BI/y<6#rR
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finalSerializable id){ +qE']yzm!
return getHibernateTemplate().load Bcaw~WD
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(entity, id); S:Xs'0K_
} dQ6GhS~
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publicObject get(finalClass entity,
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finalSerializable id){ 0M\NS$u(Y
return getHibernateTemplate().get 3H'*?|Y(#
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(entity, id); K -E`y
} DB8s
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publicList findAll(finalClass entity){ UPO^V:.R4
return getHibernateTemplate().find("from ysth{[<5F3
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" + entity.getName()); \3j)>u,r
} 3Uo]>BG
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publicList findByNamedQuery(finalString (6-y+LG
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namedQuery){ ,aO@.<"
return getHibernateTemplate y< ud('D
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().findByNamedQuery(namedQuery); @\$Keg=>:
} `,m7xJZ?y
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publicList findByNamedQuery(finalString query, >;}]pI0T
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finalObject parameter){ LaT8l?q q
return getHibernateTemplate _#(s2.h~J
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().findByNamedQuery(query, parameter); j@SYXKL~
} 4tnjXP8
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publicList findByNamedQuery(finalString query, bqNLkw#
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finalObject[] parameters){ id4]|jb
return getHibernateTemplate qm}\?_
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().findByNamedQuery(query, parameters); 1gk0l'.z
} x
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publicList find(finalString query){ *k[kV
return getHibernateTemplate().find 19w_tSg
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(query); .t:DvB
} $2is3;h
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publicList find(finalString query, finalObject >F|qb*Tm7
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parameter){ Ff&R0v
return getHibernateTemplate().find F7V6-V{_
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(query, parameter); j $0zD:ppW
} g~|y$T
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public PaginationSupport findPageByCriteria 59~FpjJ
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(final DetachedCriteria detachedCriteria){ c-`37. J
return findPageByCriteria r8F{A6i N
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); b_ZNI0Hp@
} Seg#s.
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public PaginationSupport findPageByCriteria e@yx}:]h
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(final DetachedCriteria detachedCriteria, finalint ]*a@*0=
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startIndex){ MyqiBGTb
return findPageByCriteria [xWEf#', !
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(detachedCriteria, PaginationSupport.PAGESIZE, \d ui`F"Cc
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startIndex); f!EOYowW
} IQ=CNby:
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public PaginationSupport findPageByCriteria InP[yFV-z
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(final DetachedCriteria detachedCriteria, finalint Z$1.^H.Db
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pageSize, h&q=I.3O|?
finalint startIndex){ 7^&lbzVbm(
return(PaginationSupport) R~!\-6%_
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getHibernateTemplate().execute(new HibernateCallback(){ 7x%S](m%
publicObject doInHibernate ,}n=Z
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(Session session)throws HibernateException { R
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Criteria criteria = {[my"n2
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detachedCriteria.getExecutableCriteria(session); Z(l9>A7!
int totalCount = ?rAi=w&c
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((Integer) criteria.setProjection(Projections.rowCount v^<<[I2 C
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()).uniqueResult()).intValue(); /4(Z`e;0
criteria.setProjection Th.3j's
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(null); zoR,RBU6
List items = 4u@yJ?U
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criteria.setFirstResult(startIndex).setMaxResults _'H2>V_
jkZ_c!
(pageSize).list(); >F,$;y52
PaginationSupport ps = OY+!aG@.
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new PaginationSupport(items, totalCount, pageSize, Z`^
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startIndex); }m9S(Wal
return ps; f:n] Exsy
} d]^\w'w$
}, true); !1D%-=dWX
} FAH[5VDr%
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public List findAllByCriteria(final czXI?]gg,
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DetachedCriteria detachedCriteria){ #Y/97_2 xa
return(List) getHibernateTemplate 2qt=jz\s
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().execute(new HibernateCallback(){ ztRWIkI
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publicObject doInHibernate 3FGb Q_
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(Session session)throws HibernateException { 8yY"x
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Criteria criteria = 71K\.[ =-
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detachedCriteria.getExecutableCriteria(session); +J\L4ri k
return criteria.list(); p*A^0DN'Fn
} .q
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}, true); ~,(0h:8
} ;`X`c
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public int getCountByCriteria(final nOA,x
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DetachedCriteria detachedCriteria){ GV `idFd
Integer count = (Integer) avYh\xZ
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getHibernateTemplate().execute(new HibernateCallback(){ `R4W4h'I
publicObject doInHibernate z/c'Z#w%
{[(W4NAlH
(Session session)throws HibernateException { -jcrXskb&N
Criteria criteria = R 47I\{
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detachedCriteria.getExecutableCriteria(session); oT9XJwqnv
return MY0[Oq cm=
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criteria.setProjection(Projections.rowCount baO&n
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()).uniqueResult(); M8^ziZY
} (_s!,QUe
}, true); N|^!"/
return count.intValue(); @/ovdf{
} [3bwbfHhi
} ~k:>Xo[|O
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用户在web层构造查询条件detachedCriteria,和可选的 *<
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startIndex,调用业务bean的相应findByCriteria方法,返回一个 %CfTqbB
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PaginationSupport的实例ps。 v2dSC(hRZ
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ps.getItems()得到已分页好的结果集 k+>p!1
ps.getIndexes()得到分页索引的数组 "MVN/Gl
ps.getTotalCount()得到总结果数 X#\P.$
ps.getStartIndex()当前分页索引 0^tJX1L
ps.getNextIndex()下一页索引 W0C$*oe!_i
ps.getPreviousIndex()上一页索引 tI(t%~>^
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连续看了两篇robbin有关DetachedCriteria的介绍,感觉真的不错 s9)8{z
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,尤其是上面的示例代码,让我着实觉得该对我原来的分页查询做 ?2
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一下代码重构了。 i2 Iu2
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我把原本我的做法也提供出来供大家讨论吧: Vf* B1Zb
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首先,为了实现分页查询,我封装了一个Page类:
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java代码: AFnlt
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/*Created on 2005-4-14*/ KLM^O$=
package org.flyware.util.page; Bk(XJAjY
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/** -)c"cgx.
* @author Joa ^.aEKr
* 5+PBS)pJ]%
*/ 5^R#e(mr
publicclass Page { F;l<>|vG
k{$"-3ed
/** imply if the page has previous page */ - cC(d$y
privateboolean hasPrePage; |r!Qhb.!
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/** imply if the page has next page */ vG=$UUh@~
privateboolean hasNextPage; &Fr68HNmj
[IX!3I[J]
/** the number of every page */ U\plt%2m>
privateint everyPage; s.Ic3ITd,
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/** the total page number */ F973U
privateint totalPage; <qZ+U4@I)
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/** the number of current page */ i]Of<eQ"
privateint currentPage; (4gQe6tA
Z#t.wWSq
/** the begin index of the records by the current =Qq^=3@h
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query */ `9NnL.w!
privateint beginIndex; [_B&7#3>7
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/** The default constructor */ 6>^k9cJp
public Page(){ b-gVRf#F
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} i2c<q0u
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/** construct the page by everyPage LU=)\U@Q
* @param everyPage nf^k3QS\
* */ 69w"$Vk
public Page(int everyPage){ _\6(4a`,
this.everyPage = everyPage;
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} Z-V%lRQ=b
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/** The whole constructor */ q/G5aO*
public Page(boolean hasPrePage, boolean hasNextPage, b,sc
DN_C7\CoA
}J
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int everyPage, int totalPage, =&xoyF
int currentPage, int beginIndex){ x/^zNO\1
this.hasPrePage = hasPrePage; *a.*Ha
this.hasNextPage = hasNextPage; (!=aRC.-
this.everyPage = everyPage; pZn%g]nRD
this.totalPage = totalPage; &1Iy9&y
this.currentPage = currentPage; e4LNnJU\|
this.beginIndex = beginIndex; Wuz~$SU
} qa?y lR"kA
U$Z}<8
/** p+?WhxG)
* @return tYa*%|!v
* Returns the beginIndex. znRhQ+8;!
*/ boon=;{p
publicint getBeginIndex(){ ?^Ux+mVE
return beginIndex; ?Ea"%z*c5
} 3I(M<sB}
z5/O8}Gz@
/** '& :"/4@)
* @param beginIndex '_Op rx
* The beginIndex to set. B/}>UHM
*/ 8m0sEV>
publicvoid setBeginIndex(int beginIndex){ kMXl
{
this.beginIndex = beginIndex; p-k qX
} >AJ|F)
7L"/4w
/** 2T9Z{v
* @return Tkf !Y?
* Returns the currentPage. 2B;QS\e"
*/ _{%H*PxTn=
publicint getCurrentPage(){ nt6"}vO
return currentPage; DAi[3`C
} *Y~64FM
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/** H_^c K
* @param currentPage d\M
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* The currentPage to set. a$m?if=
*/ uip]K{/A!e
publicvoid setCurrentPage(int currentPage){ ;q2T*4NN
this.currentPage = currentPage; D.?gV_
} 1wt]J!hgV
e`^j_VnEH
/** rf@81Ds
* @return jYv
!}
* Returns the everyPage. ^(R
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*/ f`e.c_n(
publicint getEveryPage(){ |(5=4j]
return everyPage; V5+a[`]
} ~4 ab\hq
gN%R-e0
/** 2 6A#X
* @param everyPage Qsa2iw{
* The everyPage to set. ||f4f3R'
*/ KMV!Hqkk
publicvoid setEveryPage(int everyPage){ 2ip~qZNw><
this.everyPage = everyPage; ;<\*(rUe
} x/~M=][tN
9EEHLx"
/** c1[;a>
* @return V]2Q92
* Returns the hasNextPage. 0U'r ia:$
*/ @u^Ib33
publicboolean getHasNextPage(){ b~}}{fm&f
return hasNextPage; n !QjptQ
} 4/b#$o<I?
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/** @OpcS>:R
* @param hasNextPage ^:BRbp37i
* The hasNextPage to set. :.<&Y=^
*/ r"+
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publicvoid setHasNextPage(boolean hasNextPage){ S<TfvQ\,"@
this.hasNextPage = hasNextPage; o9/P/PZ\X
} jVDNThm+
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/** [kCn6\_<V
* @return <:?&}'aA
* Returns the hasPrePage. QO8/?^d
*/ &>-Cz%IV
publicboolean getHasPrePage(){ aD4ln]sFxG
return hasPrePage; |l9AgwDg
}
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u
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/** 0t) IWD
* @param hasPrePage PSRGlxdO
* The hasPrePage to set. .}tL:^'~o
*/ ?F-,4Ox{/
publicvoid setHasPrePage(boolean hasPrePage){ | c;S'36
this.hasPrePage = hasPrePage; ?mV[TM{p
} R{T4AZ@,'
kz#DBh!&
/** M?,;TJ7Gd
* @return Returns the totalPage. b`^$2RM&
* |PWLFiT(>
*/ cJt#8P
publicint getTotalPage(){ WYq, i}S
return totalPage; 9(m^^
} !l'Zar
kr3ZqMfeI
/** zRe0z2
* @param totalPage }RD,JgmV
* The totalPage to set. 9<R:)Df
*/ U8moVj8w1
publicvoid setTotalPage(int totalPage){ !XK p_v
this.totalPage = totalPage; #oHHKl=M
} 6ds&n#n
$hA[vi\5
} sUg7
z8gp<5=
A>X#[qx
nF7Ozxm#
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上面的这个Page类对象只是一个完整的Page描述,接下来我写了一 -1fT2e
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个PageUtil,负责对Page对象进行构造: oqG
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java代码: f9;M"Pd
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/*Created on 2005-4-14*/ q'PA2a:
package org.flyware.util.page; lx%<oC+M
2 &R-zG
import org.apache.commons.logging.Log; `?~pk)<C].
import org.apache.commons.logging.LogFactory; ni9/7
c\n\gQ:LQ
/** C]{43
* @author Joa Zpg$:Rr
* $=t&NM
*/ vX&Nh"0H&
publicclass PageUtil { I:[3x2H
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privatestaticfinal Log logger = LogFactory.getLog X5=Dc+
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(PageUtil.class); mL ]zkD_
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/** 98G>I(Cw%
* Use the origin page to create a new page {73Z$w1%
* @param page vTN$SgzfCU
* @param totalRecords UP^{'eh
* @return =fEn h'KE
*/ Kh}#At^C8e
publicstatic Page createPage(Page page, int 9>%ti&_-jt
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totalRecords){ (;V6L{Rf>
return createPage(page.getEveryPage(), Y0
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page.getCurrentPage(), totalRecords); WL+I)n8~
} g7rn|<6FI
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/** "}Vow^vb
* the basic page utils not including exception K#kU6/
5_9mA4gs@
handler k9xfv@v}
* @param everyPage a)/!ifJ;
* @param currentPage f9?\Q'v8
* @param totalRecords iG^o@*}a
* @return page Z`Rrv$M!
*/ M<4~ewWJ
publicstatic Page createPage(int everyPage, int mbK$_HvU
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currentPage, int totalRecords){ ^9UKsy/q
everyPage = getEveryPage(everyPage); 9{]U6A*K0w
currentPage = getCurrentPage(currentPage); pqmtN*zV
int beginIndex = getBeginIndex(everyPage, 0[/>>
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<k+dJ=f
currentPage); [W;iR_7T5
int totalPage = getTotalPage(everyPage, w9Bbvr6
#?DwOUw
totalRecords); a<*q+a(*W
boolean hasNextPage = hasNextPage(currentPage, "N>~]
ZF^$?;'3
totalPage); 4i|yEf
boolean hasPrePage = hasPrePage(currentPage); 3|x*lmit
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returnnew Page(hasPrePage, hasNextPage, #q#C_"
everyPage, totalPage, ia6%>^
currentPage, P'MfuTtT&
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beginIndex); Mtq\xF,/+
} nI]8w6eCV
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privatestaticint getEveryPage(int everyPage){ :+#$=4
return everyPage == 0 ? 10 : everyPage; ynY(
} D y+)s-8
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privatestaticint getCurrentPage(int currentPage){ 0])D)%B
k
return currentPage == 0 ? 1 : currentPage; fSc)PqLP
} ,Y9bXC8+dU
-@bOFClE
privatestaticint getBeginIndex(int everyPage, int [QUaC3l)
+;,65j+n
currentPage){ 5?l8;xe`{f
return(currentPage - 1) * everyPage; kA/4W^]Ws
} u-</G-y
Uzh#zeZ`<
privatestaticint getTotalPage(int everyPage, int -So$f-y
U/ds(*g@
totalRecords){ L;RHshTy
int totalPage = 0; Wdk]>w
'L
<cm(QNdcC
if(totalRecords % everyPage == 0) ~dXiyU,y2
totalPage = totalRecords / everyPage; rF ?gKk
else okm
}%#|
totalPage = totalRecords / everyPage + 1 ; wF=?EK(;P{
l6_dVK;s
return totalPage; 6+UTEw;
} <S ae:m4
DyPHQ}G
privatestaticboolean hasPrePage(int currentPage){ je;C}4
return currentPage == 1 ? false : true; w`YN#G
} x`:c0y9uG
3s\}|LqX#
privatestaticboolean hasNextPage(int currentPage, po9f[/s'+o
"%I<yUP]U
int totalPage){ O,PTY^
return currentPage == totalPage || totalPage == P+L#p(K
mV'-1
0 ? false : true; -xXdT$Xd
} #fx>{ vzH
DuQW?9^232
^>/~MCyM.
} 3*zywcTH
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b($9gre>mI
K+\2cf?bU
XEBeoOX/
上面的这两个对象与具体的业务逻辑无关,可以独立和抽象。 zx/$
QXu[<V
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 "c.@4#/_
w8D6j%C
做法如下: S3UJ)@
E
1. 编写一个通用的结果存储类Result,这个类包含一个Page对象 BgT(~8'
4V&(w,zl
的信息,和一个结果集List: WF_v>g:g
java代码: wQ^RXbJI9
s:K'I7_#@
oj/#wF+
/*Created on 2005-6-13*/ |%oI,d=ycv
package com.adt.bo; UHgW-N"
G<-<>)zO!
import java.util.List; IISdC(5
"$/1.SX;]
import org.flyware.util.page.Page; p9 G{Q
ix hF,F
/** V.%LA.8
* @author Joa K$l@0r ~k
*/ U.WXh(`%
publicclass Result { AJ3%Z$JJ;s
;F_P<b 2
private Page page; T`bUBrK6g`
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private List content; Wecxx^vtv6
OIK46D6?.
/** \ Q^grX
* The default constructor t3AmXx
*/ u* G+=aV.6
public Result(){ UfIr"bU6
super(); yD Jy'Z_F{
} 7GTDe'T
/ ykc`E?f
/** G`;\"9t5h
* The constructor using fields mo+!79&
* bU[_YuJbM
* @param page 4JyA+OD4 {
* @param content G3 |x%/Fbp
*/ }g@
'^v
public Result(Page page, List content){ /+*N.D'`t,
this.page = page; bT6VxbNS
this.content = content; (S4HU_,88
} )dFPfu&HL
<5^m`F5
/** =av0a!
* @return Returns the content. fs:yx'mxV
*/ V= -
publicList getContent(){ A*vuS Qt(
return content; [Y~~C J
} g*(z.
LF
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/** )t@9!V
* @return Returns the page. <f`n[QD2z
*/ 97UOH
public Page getPage(){ wdAKU+tM
return page; 0}"\3EdAbD
} :p,|6~b$
8{QCW{K
/** -EE'xh-zD
* @param content o2=):2x
r{
* The content to set. S0Io$\ha
*/ uI9*D)
public void setContent(List content){ '`|j{mBhG
this.content = content; nu7 R
} y/ Bo4fM
;HH%OfQq
/** e[?,'Mp9
* @param page LT
Pr8^
* The page to set. }^0'IAXi
*/ [qW%H,_
publicvoid setPage(Page page){ K#N9N@W jR
this.page = page; {lH'T1^m
} tW4X+d"
} 9 " t;6
)c&ya|h
< K!r\^
%qz-b.
-(F}=o'
2. 编写业务逻辑接口,并实现它(UserManager, ~?Vo d|>
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UserManagerImpl) Im\ ~x~{
java代码: Z{BK@Q4z
p<(a);<L
Jz>P[LcB
/*Created on 2005-7-15*/ Za1mI^ L1
package com.adt.service; S*=^I2;
OblHN*
import net.sf.hibernate.HibernateException; R[v0T/
W{.:Cf9
import org.flyware.util.page.Page; T)sIV5bk
pP1DR'
import com.adt.bo.Result; =WUL%MfW
p\6}<b"p
/** ]T'8O`
* @author Joa yQUrHxm
*/ )W 5g-@
publicinterface UserManager { XJPIAN~l
m jP
public Result listUser(Page page)throws 3'kKbrk [
~`&4?c3p
HibernateException; %;h1n6=v2
Z(c
SM
} hWbu
Z%
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0.wF2!V.
-s2)!Iko&
fqbeO 9x
java代码: &odQ&%X
nw--
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/*Created on 2005-7-15*/ {'A
15
package com.adt.service.impl; }NwmZw>_
5JVBDA^#om
import java.util.List; ;kZD>G8
Lf^
7|
import net.sf.hibernate.HibernateException; 8aVQW_m}
*(q{k%/M
import org.flyware.util.page.Page; N?{Zrff2"O
import org.flyware.util.page.PageUtil; EH2):
M5+R8ttc
import com.adt.bo.Result; Q+K]:c
import com.adt.dao.UserDAO; <ZZfN@6
import com.adt.exception.ObjectNotFoundException; =v\}y+
Yh
import com.adt.service.UserManager;
~m=Z>4M
DL~!
^fx
/** ld(_+<e
* @author Joa U= n
*/ [7DU0Xg7
publicclass UserManagerImpl implements UserManager { 9m>L\&\_e
u"v$[8
private UserDAO userDAO; 0K^@P#{hd
Q_,!(N
/** Bq~S=bAB>R
* @param userDAO The userDAO to set. 5?>Q[a.Ne
*/ ZUB]qzmK
publicvoid setUserDAO(UserDAO userDAO){ \ :@!rM
this.userDAO = userDAO; aRWj+[[7y
} ?P7QAolrr
u];\v%b
/* (non-Javadoc) Z] cFbl\ma
* @see com.adt.service.UserManager#listUser :k.>H.8+~
]nIVP
(org.flyware.util.page.Page) .ejC#vB{KM
*/ p|;#frj
public Result listUser(Page page)throws Qx EmuiN
js)E:+{A,
HibernateException, ObjectNotFoundException { +BI%.A`2
int totalRecords = userDAO.getUserCount(); ;erxB6*
if(totalRecords == 0) vy5{Vm".4
throw new ObjectNotFoundException p'/%"
E0r#xmk
("userNotExist"); m7>)p]]
page = PageUtil.createPage(page, totalRecords); f]Z9=
List users = userDAO.getUserByPage(page); %kBrxf
returnnew Result(page, users); K^AIqL8
} 0#ePg6n
Tt0]G_
} i"!j:YEo
gavf$be
^?0WE
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Z79Y$d>G<E
其中,UserManagerImpl中调用userDAO的方法实现对User的分页查 <