Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ?Bl/bY$*h
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ,!LY:pMK
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 fLd2{jI,
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 `m8WLj
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分页支持类: v`jHd*&6)
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java代码: j_~mP>el)
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package com.javaeye.common.util; ;"ESN)*|i
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import java.util.List; W}2!~ep!
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publicclass PaginationSupport { -meY[!"X
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publicfinalstaticint PAGESIZE = 30; >Yk|(!v
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privateint pageSize = PAGESIZE; 7jQVm{{.
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privateList items; r>i95u82'
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privateint totalCount; ?8?vBkz~
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privateint[] indexes = newint[0]; 'Ha> >2M
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privateint startIndex = 0; O^ui+44wp
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public PaginationSupport(List items, int vfvp#
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totalCount){ }&v-<qC^
setPageSize(PAGESIZE); GCiG50Z=
setTotalCount(totalCount); fA?v\'Qq/
setItems(items); V/#J>-os}W
setStartIndex(0); b SgbvnJ
} x4g/ok
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public PaginationSupport(List items, int d!}oS<6
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totalCount, int startIndex){ mvc ;.+
setPageSize(PAGESIZE); yzT1Zg_ER
setTotalCount(totalCount); frDMFEXXP
setItems(items); *| W*Mu
setStartIndex(startIndex); -$:*!55:j
} _j3rs97@|
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public PaginationSupport(List items, int _KkaseR
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totalCount, int pageSize, int startIndex){ $F9w0kz:,*
setPageSize(pageSize); ov H'_'
setTotalCount(totalCount); 5#N<~
setItems(items); #1\`!7TO3
setStartIndex(startIndex); Q_!tn*
} 0vX6n6G}
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publicList getItems(){ ai1;v@1
return items; a#% *H
} M*D_pn&
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publicvoid setItems(List items){ o#1Ta7Ro
this.items = items; Jr;w>8B),
} +r//8&
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publicint getPageSize(){ 0zT-]0
return pageSize; $BgaLJs/O
} y7CO%SA
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publicvoid setPageSize(int pageSize){ 77sG;8HE
this.pageSize = pageSize; Vn:v{-i
} 7-n HPDp'
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publicint getTotalCount(){ }vx,i99W?
return totalCount;
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} 8v8-5N
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publicvoid setTotalCount(int totalCount){ DNgh#!\X
if(totalCount > 0){ x|Pz24yP9
this.totalCount = totalCount; u,`3_I^
int count = totalCount / }~PG]A
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pageSize; DbB<8$
if(totalCount % pageSize > 0) HWB\}jcA6u
count++;
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indexes = newint[count]; N%Y!{k5T7
for(int i = 0; i < count; i++){ `$FX%p
indexes = pageSize * KU{zzn;g
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} 0F![<5X
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this.totalCount = 0; lX2:8$?X
} &=M4Z/Ao
} &Z!y>k%6
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publicint[] getIndexes(){ 7G;1n0m-T
return indexes; rr\u)D#)
} L>E;cDB
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publicvoid setIndexes(int[] indexes){ yS4VgP'W
this.indexes = indexes; 8%YyxoCH
} :k`Qj(7S
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publicint getStartIndex(){ yi~]}M
return startIndex; X[$|I9
} i%<NKE;v7m
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publicvoid setStartIndex(int startIndex){ {{_v.d~1
if(totalCount <= 0)
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this.startIndex = 0; fibudkg'>
elseif(startIndex >= totalCount) Qnt}:M+
this.startIndex = indexes B=%%3V)2
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[indexes.length - 1]; <&+jl($"
elseif(startIndex < 0) (;05=DsO
this.startIndex = 0; 3]lq#p:
else{ )F&.0 '
this.startIndex = indexes :BV $3]y
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[startIndex / pageSize]; +_*NY~
} <"`f!k#[
} <P0 P*>M
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publicint getNextIndex(){ L;vglS=l;
int nextIndex = getStartIndex() + p$x>I3C(\
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pageSize; ]}l.*v\uK
if(nextIndex >= totalCount) \h s7>5O^K
return getStartIndex(); '-n
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else AX6:*aZB
return nextIndex; <3N\OV2
} ''q;yKpaz
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publicint getPreviousIndex(){ R=,
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int previousIndex = getStartIndex() - qBK68B)
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pageSize; R)$]r>YZF
if(previousIndex < 0)
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return0; :(/1,]bF
else nSQ]qH&4d
return previousIndex; 62.Cq!~
} lH/"47
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} Kx,X{$Pe
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抽象业务类 i,Z-UA|f=T
java代码: #hs&)6Sf
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/** FqnD"]A
* Created on 2005-7-12 *0L3#. i
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package com.javaeye.common.business; 1>OU~A"
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import java.io.Serializable; ^!k_"C)B
import java.util.List; ']c;$wP
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import org.hibernate.Criteria; )>Z@')Uk:
import org.hibernate.HibernateException; o.|36#Fa
import org.hibernate.Session; Ygg(qB1q
import org.hibernate.criterion.DetachedCriteria; Xm(#O1Vm(l
import org.hibernate.criterion.Projections; fwzyCbks
import [9~EH8
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org.springframework.orm.hibernate3.HibernateCallback; pBBKfv
import n4XkhY|
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org.springframework.orm.hibernate3.support.HibernateDaoS :nqDX
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upport; +
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import com.javaeye.common.util.PaginationSupport; l6xqc,h!K
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public abstract class AbstractManager extends %zEy.7Ux
{(F}SF{
HibernateDaoSupport { Zg4wd/y?
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privateboolean cacheQueries = false; &\6(iL
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privateString queryCacheRegion; GvA4.s,
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publicvoid setCacheQueries(boolean ^Df qc-]
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cacheQueries){ 0lYP!\J3]%
this.cacheQueries = cacheQueries; >k=@YLj
} lY,9bSF$
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publicvoid setQueryCacheRegion(String 3w[uc ~f
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queryCacheRegion){ fffWvf
this.queryCacheRegion = e9S*^2;
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queryCacheRegion; ]eFNR1<OP
} ) 54cG
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publicvoid save(finalObject entity){ l#+@!2z
getHibernateTemplate().save(entity); vt(n: Xk
} YLSDJ$K6
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publicvoid persist(finalObject entity){ Kh&a# ~c
getHibernateTemplate().save(entity); dW|S\S'&
} 7zXX&