Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 wv
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 I2$T"K:eo
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 :!;'J/B@..
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 qa(>wR"mT
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分页支持类: dUgrKDNyA
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java代码: Ogt]_
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package com.javaeye.common.util; X.K<4N0A9J
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import java.util.List; ._wkj
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publicclass PaginationSupport { Nfe>3uQK
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publicfinalstaticint PAGESIZE = 30; rV({4cIe9R
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privateint pageSize = PAGESIZE; Z34Wbun4
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privateList items; 2Nxm@B` {
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privateint totalCount; qjJBcu_C'S
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privateint[] indexes = newint[0]; 6*l^1;U
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privateint startIndex = 0; 2eeQ@]Wj[Z
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public PaginationSupport(List items, int T,fI BD:
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totalCount){ wdzOFDA
setPageSize(PAGESIZE); % |q0-x
setTotalCount(totalCount); ,:Vm6u!
setItems(items); Q "oI])r
setStartIndex(0); vN4Qdpdb
} o }Tz"bN
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public PaginationSupport(List items, int n/QF2&X7)
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totalCount, int startIndex){ C
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setPageSize(PAGESIZE); !KKT[28v
setTotalCount(totalCount); GN#<yv$av
setItems(items); M >:]lpRK
setStartIndex(startIndex); Mcw4!{l`
} KPSh#x&I
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public PaginationSupport(List items, int :ztr)
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totalCount, int pageSize, int startIndex){ UE _fpq
setPageSize(pageSize); =k}SD96
setTotalCount(totalCount); ?#0snlah|
setItems(items); [w
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setStartIndex(startIndex); YL
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} #6+FY+/
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publicList getItems(){ i$^)UZJ&0
return items; -71dN0hWh
} 3qH QX?a
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publicvoid setItems(List items){ _2fkb=2@
this.items = items; Zn:R
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} qZ@0]"h
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publicint getPageSize(){ n<Svwa}
return pageSize; ?!w^`D0}o
} ,~ ?'Ef80
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publicvoid setPageSize(int pageSize){ ^IZ)#1U
this.pageSize = pageSize; ^\ ?O4,L
} J
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publicint getTotalCount(){ v/uO&iQw5
return totalCount; :Ud[f`t
} SEQ%'E5-'
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publicvoid setTotalCount(int totalCount){ ArLvz5WV
if(totalCount > 0){ q<e&0u4
this.totalCount = totalCount; rh2LGuo4m
int count = totalCount / <Y 4:'L6
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pageSize; MFJE6ei
if(totalCount % pageSize > 0) <j}lp-
count++; sK$wN4k
indexes = newint[count]; I^*'.z!4Q
for(int i = 0; i < count; i++){ 0X..e$ '
indexes = pageSize * rgIrr5
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} m(D]qYwh
}else{ Qz<d~N
this.totalCount = 0; J.*XXM- V
} nR
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} gLD`wfZR
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publicint[] getIndexes(){ ]>##`X
return indexes; 3K/Df#
} I"L;L?\S
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publicvoid setIndexes(int[] indexes){ $KV&\Q3\0
this.indexes = indexes; V|Tud
} O[~x_xeW
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publicint getStartIndex(){ uE_c4Hp
return startIndex; `T*U]/zQ
} 4C_c\;d
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publicvoid setStartIndex(int startIndex){ `%K`gYhG1
if(totalCount <= 0) qX:B4,|ck
this.startIndex = 0; ?4t-caK^u
elseif(startIndex >= totalCount) Y,z??bm~J
this.startIndex = indexes ={(j`VSUX0
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[indexes.length - 1]; Y8s;w!/
elseif(startIndex < 0) 'E;W
this.startIndex = 0; l?N`{,1^
else{ my^ak*N
this.startIndex = indexes sOFa!bdPW
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[startIndex / pageSize]; @_'OyRd8
} A;K(J4y*
} vL_zvXA
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publicint getNextIndex(){ F%.xuL W
int nextIndex = getStartIndex() + HB&
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pageSize; g#^|oYuH6
if(nextIndex >= totalCount) I@7/jUO
return getStartIndex(); MOz}Q1`a
else WnxEu3U
return nextIndex; AY2:[ 5cm
} SBKeb|H8
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publicint getPreviousIndex(){ V%
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int previousIndex = getStartIndex() - \3Jq_9Xv
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pageSize; ;_JH:}j
if(previousIndex < 0) jp<VK<s]
return0; >Wi s.e%b
else m@qqVRn#)
return previousIndex; (i`(>I.(/
} is#8R:7.:
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} 3{J.xWB@:
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抽象业务类 Q7Ij4
java代码: ia{kab|_5
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/** 9{eBgdC
* Created on 2005-7-12 RsSXhPk?
*/ jXIEp01
package com.javaeye.common.business; &4kM8Qh
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import java.io.Serializable; HHS45kg[c
import java.util.List;
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import org.hibernate.Criteria; `SOhG?Zo
import org.hibernate.HibernateException; iHz[Zw^.s
import org.hibernate.Session; %W;u}`
import org.hibernate.criterion.DetachedCriteria; YFx=b!/s
import org.hibernate.criterion.Projections; &'O?es|Lb
import h~ha
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org.springframework.orm.hibernate3.HibernateCallback; 9~Xg#{
import XZO<dhZX:
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org.springframework.orm.hibernate3.support.HibernateDaoS *Mi6
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upport; eTZ`q_LfI1
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import com.javaeye.common.util.PaginationSupport; >eo8
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public abstract class AbstractManager extends I7Zq}Pxa
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HibernateDaoSupport { +"=~o5k3Q
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privateboolean cacheQueries = false; |Ow$n
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privateString queryCacheRegion; n\~yX<;X3
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publicvoid setCacheQueries(boolean CjZ6NAHc
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cacheQueries){ JS2!)aqc
this.cacheQueries = cacheQueries; &ps6s.K
} KgU[
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publicvoid setQueryCacheRegion(String
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queryCacheRegion){ Kz^ hQd
this.queryCacheRegion = Ib(,P3
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queryCacheRegion; <w11nB)
} +}]wLM}\UF
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publicvoid save(finalObject entity){ Y;PDZbK3
getHibernateTemplate().save(entity); s.ey!ew
} -(ER4#
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publicvoid persist(finalObject entity){ :O#gJob-%s
getHibernateTemplate().save(entity); %w%zv2d
} lMPbLF%_
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publicvoid update(finalObject entity){ T/3;NXe6E
getHibernateTemplate().update(entity); 3?6 Ber y=
} :if5z2PE/
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publicvoid delete(finalObject entity){ '.xkn{c
getHibernateTemplate().delete(entity); 3g+\?L-c
} 5[ hlg(eb
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publicObject load(finalClass entity, CTh1;U20
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finalSerializable id){ 3pzOt&T|w
return getHibernateTemplate().load F.&*D~f
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(entity, id); 7{8)ykBU^
} ]dQZ8yVK
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publicObject get(finalClass entity, f61]`@Bk
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finalSerializable id){ K T"h74@
return getHibernateTemplate().get lp3(&p<:
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(entity, id); I\)N\move
} .jy)>"h0
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publicList findAll(finalClass entity){ k0R,!F
return getHibernateTemplate().find("from d
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" + entity.getName()); ',<{X(#(
} VN1#8{
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publicList findByNamedQuery(finalString UX+?0 K
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namedQuery){ qsQ]M^@>
return getHibernateTemplate Hd96[Uo
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().findByNamedQuery(namedQuery); HE4`9$kVLr
} 9iiU,}M`j
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publicList findByNamedQuery(finalString query, 7 B4w.P,B
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finalObject parameter){ 9G=A)j
return getHibernateTemplate dpl"}+
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().findByNamedQuery(query, parameter); |rG8E;>
} +A;n*DF2
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publicList findByNamedQuery(finalString query, AqTR.}H
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finalObject[] parameters){ _CYmG"mY
return getHibernateTemplate 0$Qn#K
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().findByNamedQuery(query, parameters); lUy*549,
} _Y:Ja0,
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publicList find(finalString query){ )4 VLm
return getHibernateTemplate().find }Etd#">
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(query); 0D W'(#`
} 'npT+p$V
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publicList find(finalString query, finalObject Vb"T],N1m
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parameter){
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return getHibernateTemplate().find TWD|1
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(query, parameter); Gh chfI.
} ".Q!8j"@f
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public PaginationSupport findPageByCriteria V8| q"UX
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(final DetachedCriteria detachedCriteria){ 2!"\;/
return findPageByCriteria HCn]#
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); Y ~\`0?ST
} U- U V<}
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public PaginationSupport findPageByCriteria N";dG 3
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(final DetachedCriteria detachedCriteria, finalint 0wa!pE"
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startIndex){ CzDR% v x
return findPageByCriteria Wvzzjcr(j
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(detachedCriteria, PaginationSupport.PAGESIZE, 2 |kH%
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startIndex); "gl:4|i'
} y:|Xg0Kp
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public PaginationSupport findPageByCriteria Gh>fp
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(final DetachedCriteria detachedCriteria, finalint M
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pageSize, :\w[xqH
finalint startIndex){ lXL7q?,9
return(PaginationSupport) H2p XJ/XF
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getHibernateTemplate().execute(new HibernateCallback(){ Vlxb<$5Nh
publicObject doInHibernate GVHfN5bTqn
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(Session session)throws HibernateException { BC0c c[x
Criteria criteria = h9OL%n 7m'
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detachedCriteria.getExecutableCriteria(session); {ALBmSapK"
int totalCount = 1&dsQ,VDl
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((Integer) criteria.setProjection(Projections.rowCount 6x zR*~7
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()).uniqueResult()).intValue(); "VVR#H}{
criteria.setProjection 8KELN(o$ 7
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(null); 2;(iTPz +
List items = ]ieA?:0Hi
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criteria.setFirstResult(startIndex).setMaxResults (l!D=qy
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(pageSize).list(); 0gb]Kj x
PaginationSupport ps = {s^ryv_}
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new PaginationSupport(items, totalCount, pageSize, !}Ou|r4_
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startIndex); %oL&~6l$
return ps; ;gu>;_
} ?;#3U5$v
}, true); ~JRuMP
} GTIfrqT
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