Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Z6NJ)XQy6F
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 v;Swo("
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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 Is<x31R
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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 Fgskb"k/
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分页支持类: lfXH7jL2~
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java代码: A S`2=w
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package com.javaeye.common.util; S^|$23}
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import java.util.List; z~BD(FDI
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publicclass PaginationSupport { +{5JDyh0
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publicfinalstaticint PAGESIZE = 30; txj wZ_p
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privateint pageSize = PAGESIZE; u)tHOV>&
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privateList items; RP,A!pa@
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privateint totalCount; s.VUdR"
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privateint[] indexes = newint[0]; V xp$#3 ;S
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privateint startIndex = 0; |P^]@om
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public PaginationSupport(List items, int G/NTe
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totalCount){ hq5NQi`
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setPageSize(PAGESIZE); 3DxZ#/!
setTotalCount(totalCount); {z.[tvE8h
setItems(items); *eHA:
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setStartIndex(0); 8FxcI!A@
} X*TuQ\T
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public PaginationSupport(List items, int q,<n,0)K
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totalCount, int startIndex){ W2}%zux
setPageSize(PAGESIZE); }s`jl``PM
setTotalCount(totalCount); Rf)'HT
setItems(items); o,*folL
setStartIndex(startIndex);
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} eNIkiJ$uS
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public PaginationSupport(List items, int B] A 5n8<
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totalCount, int pageSize, int startIndex){ s,eld@
setPageSize(pageSize); D< nlb-
setTotalCount(totalCount); r!{w93rPX
setItems(items); w o-O_uZB
setStartIndex(startIndex); LVPt*S= /
} el <<D
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publicList getItems(){ Ck ~V5
return items; Q3B'-BZe
} '#cT4_D^lI
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publicvoid setItems(List items){ .nj?;).
this.items = items; , aRJ!AZ
} AIvL#12
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publicint getPageSize(){ rK(x4]I
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return pageSize; pm'@2dT
} ?=;e.qK=71
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publicvoid setPageSize(int pageSize){ H j5WJ{p.
this.pageSize = pageSize; 2a._?(k_y
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publicint getTotalCount(){ !wLH&X$XT
return totalCount; w8m8r`h
} nZ`2Z7!
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publicvoid setTotalCount(int totalCount){ f>\bUmk(
if(totalCount > 0){ "Cyo<|
this.totalCount = totalCount; ~uhyROO,G"
int count = totalCount / GvZac
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pageSize; .R$+#_
if(totalCount % pageSize > 0) !^>LOH>j
count++; g:.,}L
indexes = newint[count]; e6{[o@aM{
for(int i = 0; i < count; i++){ Wvut)T
indexes = pageSize * 4i[v
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} -CU7u=*b
}else{ zulf%aaL
this.totalCount = 0; )MD*)O
} G)tq/`zNw
} JGSk4
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publicint[] getIndexes(){ X5L(_0?F1
return indexes; (2O} B.6
} 6uCk0
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publicvoid setIndexes(int[] indexes){ @R'g@+{I
this.indexes = indexes; ~x0-iBF
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publicint getStartIndex(){ ZHiICh|et%
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publicvoid setStartIndex(int startIndex){ _Y
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if(totalCount <= 0) w371.84
this.startIndex = 0; !0. 5
elseif(startIndex >= totalCount) 0>~6Z
this.startIndex = indexes 6XOpB^@
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[indexes.length - 1]; S,`Sq8H
elseif(startIndex < 0) a_pCjG89
this.startIndex = 0; rd"]@~v1
else{ Iu1Sj`A
this.startIndex = indexes :i,c<k
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publicint getNextIndex(){ /[0 /8f6
int nextIndex = getStartIndex() + UB&S 2g
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if(nextIndex >= totalCount) ~g4rGz
return getStartIndex(); "PX3%II
else C(t6;&H
return nextIndex; { Sliy'
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publicint getPreviousIndex(){ -{:LxE
int previousIndex = getStartIndex() - K_lL\
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pageSize; %*Z2Gef?H
if(previousIndex < 0) F{H0
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else }rMpp[
return previousIndex; 2W:?#h3
} u&d v[
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} i;'X}KW
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抽象业务类 UVBw;V
java代码: 4\'81"ei
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/** q;a*gqt
* Created on 2005-7-12
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*/ OD/P*CQ_
package com.javaeye.common.business; 7F9g:r/^
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import java.io.Serializable; gK#fuQ$hH
import java.util.List; rNzhP*Fw
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import org.hibernate.Criteria; |XdrO
import org.hibernate.HibernateException; 0)Xue9AS
import org.hibernate.Session; ^s2-jkK
import org.hibernate.criterion.DetachedCriteria; `# M.t);^
import org.hibernate.criterion.Projections; yJ`1},^
import sd@gEp)L
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org.springframework.orm.hibernate3.HibernateCallback; *Qwhi&k
import K8 4cE
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org.springframework.orm.hibernate3.support.HibernateDaoS -0IFPL8
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upport; @NwM+^
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import com.javaeye.common.util.PaginationSupport; *7fPp8k+Z;
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public abstract class AbstractManager extends Qnb?hvb"d
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HibernateDaoSupport { 1z@# 8_@
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privateboolean cacheQueries = false; 70*iJ^|
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privateString queryCacheRegion; Qufv@.'AY
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publicvoid setCacheQueries(boolean Jas|P}{=fT
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cacheQueries){ p6l@O3
this.cacheQueries = cacheQueries; YM*6W?
} <RVtLTd/
}
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publicvoid setQueryCacheRegion(String a`X&;jH0ef
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queryCacheRegion){ H^1 a3L]
this.queryCacheRegion = k3.p@8@:
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queryCacheRegion; gN'i+mQcu
} .%b_3s".
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publicvoid save(finalObject entity){ TdIFZ[<7
getHibernateTemplate().save(entity); sP8&p*TJF
} RGuHXf
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publicvoid persist(finalObject entity){ M`fXH 3D
getHibernateTemplate().save(entity); J6Nw-qF
} EI+/%.,
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publicvoid update(finalObject entity){ ]3u'Qv}o
getHibernateTemplate().update(entity); T`{MQ:s
} 9<c4y4#y
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publicvoid delete(finalObject entity){ 0F'UFn>{
getHibernateTemplate().delete(entity); {^MAdC_
} q&6=oss!
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publicObject load(finalClass entity, Vzm+Ew
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finalSerializable id){ koY8=lh/
return getHibernateTemplate().load <FT\u{9$
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(entity, id); !TZ/PqcE
} q$'&R