Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 7 A$B{
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 :;]Oc
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 2\D8.nQr
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 LJlZ^kh
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分页支持类: >h~IfZU1
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java代码: = "ts`>
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package com.javaeye.common.util; l ,|%7-
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import java.util.List; sYSLmUZ{
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publicclass PaginationSupport { NPnHH:\;
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publicfinalstaticint PAGESIZE = 30; =qVP] 9
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privateint pageSize = PAGESIZE; gk0.zz([
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privateList items; L71!J0@a#
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privateint totalCount; (t^n'V
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privateint[] indexes = newint[0]; -NGK@Yk22
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privateint startIndex = 0; 8,T4lb<<
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public PaginationSupport(List items, int Y,S\2or$
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totalCount){ }
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setPageSize(PAGESIZE); }=](p-] 5
setTotalCount(totalCount); 5f'DoT
setItems(items); alMYk
setStartIndex(0); l~s7Ae
} lJ;J~>
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public PaginationSupport(List items, int Z4TL6]^R
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totalCount, int startIndex){ zk_Eb?mhwV
setPageSize(PAGESIZE); :Sg&0Wj+#j
setTotalCount(totalCount); .>g1$rj
setItems(items); ,$*IzL~
setStartIndex(startIndex); )EM7,xMz
} +!t}
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public PaginationSupport(List items, int ^?"\?M1
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totalCount, int pageSize, int startIndex){ l(W[_ D
setPageSize(pageSize); 4Aes#{R3v
setTotalCount(totalCount); ,Dmc2D
setItems(items); ]:]H:U]p
setStartIndex(startIndex); +]xFoH
} %hS|68pN6
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publicList getItems(){ 5i6
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return items; >B -q@D
} AIl4]F5I
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publicvoid setItems(List items){ B/f0P(7
this.items = items; }alj[)
} B1
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publicint getPageSize(){ I`RBj `IF
return pageSize; vE, 37
} \kIMDg3}
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publicvoid setPageSize(int pageSize){ %u\26[/
this.pageSize = pageSize; _ o6G6e,
} ^ZeJ[t&!#
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publicint getTotalCount(){ }-p[V$:S
return totalCount; gT+Bhr
} =s97Z-
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publicvoid setTotalCount(int totalCount){ '!h/B;*(
if(totalCount > 0){
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this.totalCount = totalCount; .\3`2
int count = totalCount / 'm=*u
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pageSize; 7k%T<;V
if(totalCount % pageSize > 0) 5ABhj* 7
count++; fIC9WbiH-
indexes = newint[count]; 0'Z\O
for(int i = 0; i < count; i++){ SkNre$>t{
indexes = pageSize * j=+"Qz/hr_
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} ^)yTBn,
}else{ G* b2,9&F
this.totalCount = 0; yBed kj
} we7c`1E
} .aOnGp
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publicint[] getIndexes(){ Y(VJbm`
return indexes; x|64l`Vp(:
} vEe NW
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publicvoid setIndexes(int[] indexes){ k,Qskd-N]
this.indexes = indexes; :c[n\)U[aa
} uwIc963
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publicint getStartIndex(){ WP**a Bp
return startIndex; Q/>L_S
} 2GmpCy`L"
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publicvoid setStartIndex(int startIndex){ R\Z:n*
if(totalCount <= 0) NF$\^WvYSP
this.startIndex = 0; N[|Nxm0z/C
elseif(startIndex >= totalCount) X~.f7Ao[
this.startIndex = indexes &xZyM@
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[indexes.length - 1]; Pi2|
elseif(startIndex < 0) ;!@EixN-YH
this.startIndex = 0; =ziwxIo6
else{ U!w1AY|
this.startIndex = indexes nQK|n^AU/
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[startIndex / pageSize]; E
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} 4A`NJ
} -|yb[~3
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publicint getNextIndex(){ ^cvl:HOog
int nextIndex = getStartIndex() + Br>Fpe$q4
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pageSize; lb'Cl 3H
if(nextIndex >= totalCount) `'_m\uo
return getStartIndex(); SU _SU".
else ~q0*"\Ff
return nextIndex; `Kl`VP=c
} a@d=>CT$
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publicint getPreviousIndex(){ ({}( qm
int previousIndex = getStartIndex() - ewsKH\#
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pageSize; cFd
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if(previousIndex < 0) i=FQGWAUu
return0; v`q\6i[-
else XkKC!
return previousIndex; (kBP(2V
} ?|;yVew
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} 72T I
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抽象业务类 2h30\/xkU
java代码: ?`?T7w|3
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/** XV>JD/K2
* Created on 2005-7-12 Y OyX[&oi
*/ l?E a#
package com.javaeye.common.business; SJ'
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import java.io.Serializable; gW(gJ;
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import java.util.List; {2'm^0Kl
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import org.hibernate.Criteria; n7LfQWc
import org.hibernate.HibernateException; Ft{[ae?4
import org.hibernate.Session; Si}HX!s
import org.hibernate.criterion.DetachedCriteria; t-%Q`V=[
import org.hibernate.criterion.Projections; [V#r7a
import &(rWw Oo6
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org.springframework.orm.hibernate3.HibernateCallback; =(AtfW^H
import I XA>`D
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org.springframework.orm.hibernate3.support.HibernateDaoS Tn-C>=tR~%
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upport; [^H"FA[
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import com.javaeye.common.util.PaginationSupport; ][PzgzG
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public abstract class AbstractManager extends
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HibernateDaoSupport { 2R-A@UE2
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privateboolean cacheQueries = false; [}mA`5
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privateString queryCacheRegion; qf'm=efRyu
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publicvoid setCacheQueries(boolean {WN(&eax
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cacheQueries){ w6|9|f/
this.cacheQueries = cacheQueries; 6x{<e4<n
} Tz&Y]#h_
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publicvoid setQueryCacheRegion(String ?gGt2O1J
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queryCacheRegion){ <M?:
this.queryCacheRegion = |Q~cX!;
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queryCacheRegion; ^:, l\Y
} RH0>ZZR
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publicvoid save(finalObject entity){ i yYJR
getHibernateTemplate().save(entity); mbl]>JsQD
} ,n,RFa
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publicvoid persist(finalObject entity){ 1xyU
getHibernateTemplate().save(entity); W3W'oo
} }`VDD?M
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publicvoid update(finalObject entity){ \ b8sG"G
getHibernateTemplate().update(entity); !#ri5{od
} ~iBgw&Y
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publicvoid delete(finalObject entity){ a[bBT@f
getHibernateTemplate().delete(entity); CLD-mx|?
} AT
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publicObject load(finalClass entity,
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finalSerializable id){ wJb#g0
return getHibernateTemplate().load 2Tav;LKX
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(entity, id); 5`/@N{e
} XhzGLYb~I`
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publicObject get(finalClass entity, HY;o^drd
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finalSerializable id){ }S-DB#6
return getHibernateTemplate().get 0X2@CPIFf
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(entity, id); ;#G oGb4AM
} jd`},X /
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publicList findAll(finalClass entity){ EUYCcL'G
return getHibernateTemplate().find("from 1xJ
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" + entity.getName()); TOF
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} WnFG{S{s
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publicList findByNamedQuery(finalString gCd`pi
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namedQuery){ 07T70[G
return getHibernateTemplate [36,eK
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().findByNamedQuery(namedQuery); Wm'QP4`
} ^62|d
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publicList findByNamedQuery(finalString query, 5y2?
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finalObject parameter){ DH DZ_t:
return getHibernateTemplate eg"Gjp-4=
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().findByNamedQuery(query, parameter); kU5.iK'
} EY`H}S!xy
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publicList findByNamedQuery(finalString query, h<l1]h+x
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finalObject[] parameters){ pqM~l&
return getHibernateTemplate jkAAqR R
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().findByNamedQuery(query, parameters); I[MgIr^
} Z{IUy
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publicList find(finalString query){ $h9='0Wi0'
return getHibernateTemplate().find fqz28aHh
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(query); e)nimq
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} G |*(8r()
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publicList find(finalString query, finalObject WlB'YL-`g
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parameter){ $ZPX]2D4B#
return getHibernateTemplate().find ;wiao(t>4N
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(query, parameter); HWns.[
} :H6FPV78
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public PaginationSupport findPageByCriteria wyx(FinIH
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(final DetachedCriteria detachedCriteria){ T[k4lM
return findPageByCriteria C;AA/4Ib
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); :_<_[Y]1
} 6SJ"Tni8
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public PaginationSupport findPageByCriteria $FH18
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(final DetachedCriteria detachedCriteria, finalint MOn,Db$
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startIndex){ +@9gkPQQ-@
return findPageByCriteria {P9J8@D
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(detachedCriteria, PaginationSupport.PAGESIZE, D\~zS`}
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startIndex); EO|:FcW
} 9Ywpej*+
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public PaginationSupport findPageByCriteria PW(\4Q\
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(final DetachedCriteria detachedCriteria, finalint ;?fS(Vz~
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pageSize, MmPU7Nl%X
finalint startIndex){ _3iHkQr
return(PaginationSupport) #H [Bb2(j
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getHibernateTemplate().execute(new HibernateCallback(){ EqiFy"H
publicObject doInHibernate %z]U LEYrZ
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(Session session)throws HibernateException { +.B<Hd
Criteria criteria = t9gfU5?
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detachedCriteria.getExecutableCriteria(session); sRVIH A,
int totalCount = Z#d&|5Xj
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((Integer) criteria.setProjection(Projections.rowCount eO=s-]mk
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()).uniqueResult()).intValue(); tbo>%kn
criteria.setProjection <^.=>Q0S\
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(null); `cz2DR-"
List items = j*@l"V>~
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criteria.setFirstResult(startIndex).setMaxResults 2Q7R6*<N:
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(pageSize).list(); <`X"}I3ba
PaginationSupport ps = t9
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new PaginationSupport(items, totalCount, pageSize,
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startIndex); W+wA_s2&D
return ps; zQ?!f#f
} ulT8lw='
}, true); WFR?fDtE
} ^VW
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public List findAllByCriteria(final TlL^7f}
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DetachedCriteria detachedCriteria){ 1sE?YJP-
return(List) getHibernateTemplate O-]mebTvw
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().execute(new HibernateCallback(){ !J1rRPV
publicObject doInHibernate _cTh#t ^
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(Session session)throws HibernateException { DBLk!~IF
Criteria criteria = *,C(\!b
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detachedCriteria.getExecutableCriteria(session); q>f<u&
return criteria.list(); C$Lu]pIL*
} r0t^g9K0
}, true); (2ur5uk+
} H~eRT1
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public int getCountByCriteria(final -&