Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 e3?z^AUXm
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 HJP~
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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 ZT8LMPC
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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 "oyBF CW
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分页支持类: D4uAwmc
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java代码: [B +:)i
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package com.javaeye.common.util; G6+6uWvl
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import java.util.List; $\|Q+ 7lQ
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publicclass PaginationSupport { ]2
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publicfinalstaticint PAGESIZE = 30; a6O <t;&
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privateint pageSize = PAGESIZE; `r-3"or/$
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privateList items; 6 N:Ps8Hg
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privateint totalCount; X(\L1N
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privateint[] indexes = newint[0]; 7_jlNr7uk
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privateint startIndex = 0; 7[!dm_
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public PaginationSupport(List items, int f^ZhFu?
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totalCount){ Bf6i{`!G
setPageSize(PAGESIZE); E+LQyvF[
setTotalCount(totalCount); Tu5p`p3-j
setItems(items); ael] {'h]
setStartIndex(0); ZKq#PB/.
} oZ ^,*
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public PaginationSupport(List items, int `S.I,<&
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totalCount, int startIndex){ 3:xKq4?
setPageSize(PAGESIZE); HFlExau
setTotalCount(totalCount);
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setItems(items); #9F>21UU
setStartIndex(startIndex); y7%SHYC p[
} i5&,Bpfo-
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public PaginationSupport(List items, int EU04U
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totalCount, int pageSize, int startIndex){ r-*6#
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setPageSize(pageSize); Jb^{o+s53
setTotalCount(totalCount); iz{TSU
setItems(items); lI+^}-<
setStartIndex(startIndex); z[myf]@
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publicList getItems(){ PxGw5:
return items; qvK/}
} oveK;\7/m
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publicvoid setItems(List items){ nc\2A>f`
this.items = items; nMfR<%r
} 8lGM>(:o
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publicint getPageSize(){ )tnbl"0
return pageSize; q-ko)]
} 2|d^#8)ZC
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publicvoid setPageSize(int pageSize){ 0NKgtH~+
this.pageSize = pageSize; 5E1`qof
} URg;e M#
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publicint getTotalCount(){ D~U RY_[A
return totalCount; Y_n3O@,
} LExm#T`
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publicvoid setTotalCount(int totalCount){ FfrC/"N
if(totalCount > 0){ / o
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this.totalCount = totalCount; H{,1-&>|
int count = totalCount / bgKC^Q/F
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pageSize; UcOP 0_/
if(totalCount % pageSize > 0) m'"H1~BW
count++; wy#>Aq
indexes = newint[count]; O(!;7v}
for(int i = 0; i < count; i++){ b;5j awG
indexes = pageSize * v}a{nU'
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} I`rN+c:
}else{ {i?G:K
this.totalCount = 0; bv'>4a
} unew
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} ~;H,cPvrEg
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publicint[] getIndexes(){ R=D}([pi
return indexes; X&LJ"ahK
} f!R7v|jP
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publicvoid setIndexes(int[] indexes){ +Ln^<!P
this.indexes = indexes; v;9(FLtL
} gh\u@#$8
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publicint getStartIndex(){ `[(XZhN
return startIndex; 'N+;{8C-{
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publicvoid setStartIndex(int startIndex){ jX8)Ov5Mv
if(totalCount <= 0) SO(BkxV@
this.startIndex = 0; 9X=<uS
elseif(startIndex >= totalCount) }Oc+EV-Z
this.startIndex = indexes OUF%DMl4
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[indexes.length - 1]; .R"VLE|
elseif(startIndex < 0) T)7U+~nQ"
this.startIndex = 0; >!s<JKhI
else{ D6Aa5&rO+
this.startIndex = indexes =<p=?16
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[startIndex / pageSize]; P(b[|QF
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} hk:>*B}
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publicint getNextIndex(){ !E?+1WDS0
int nextIndex = getStartIndex() + E>tHKNyVTp
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pageSize; ox&?`DO
if(nextIndex >= totalCount) RH<2f5-sC!
return getStartIndex(); M.}J SDt
else kBcTXl
return nextIndex; ]bh%pn
} cl`Wl/Q#
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publicint getPreviousIndex(){ vr4r,[B6y
int previousIndex = getStartIndex() - h+j^VsP zB
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pageSize; `14@dk
if(previousIndex < 0) }BI6dZ~2A
return0; y,|2hrj/0E
else s9CmR]C
return previousIndex; CZu=/8?
} BQ Vro;#Jc
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抽象业务类 hN!;Tny
java代码: L +Uq4S^
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/** E9j<+Ik
* Created on 2005-7-12 -_5Dk'R#`
*/ 8CUtY9.
package com.javaeye.common.business; Gkem _Z
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import java.io.Serializable; /tj]^QspS
import java.util.List; ]goJ- &
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import org.hibernate.Criteria; D|)_c1g
import org.hibernate.HibernateException; |rk.t g9
import org.hibernate.Session; 06 %-tAq:
import org.hibernate.criterion.DetachedCriteria; \UZGXk
import org.hibernate.criterion.Projections; 99ZWB
import EMO{u
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org.springframework.orm.hibernate3.HibernateCallback; '=Zm[P,
import ?<3 d
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org.springframework.orm.hibernate3.support.HibernateDaoS c:.5@eq^
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upport; pIC'nO_
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import com.javaeye.common.util.PaginationSupport; \)t//0
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public abstract class AbstractManager extends 7<e}5nA/
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HibernateDaoSupport { ri8=u$!
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privateboolean cacheQueries = false; [>a3` 0M
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privateString queryCacheRegion; Sxc)~y
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publicvoid setCacheQueries(boolean Fy<:iv0>t
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cacheQueries){ wMR,r@}
this.cacheQueries = cacheQueries; \h#aPG<yo
} W7uX
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publicvoid setQueryCacheRegion(String BT8)t.+pv
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queryCacheRegion){ +&VY6(Zj+*
this.queryCacheRegion = m0ra
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queryCacheRegion; vi^YtA
} hGV_K" ~I0
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publicvoid save(finalObject entity){ K1J |\!o
getHibernateTemplate().save(entity); <lIm==U<-
} _xh)]R
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publicvoid persist(finalObject entity){ k-n`R)p:
getHibernateTemplate().save(entity); e`={_R{N
} K% FK
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publicvoid update(finalObject entity){ < r~hU*u
getHibernateTemplate().update(entity); CUH u=
} q:)PfP+
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publicvoid delete(finalObject entity){ hmkb!)
getHibernateTemplate().delete(entity); ZKEoU!
} 59 g//;35@
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publicObject load(finalClass entity, #6|ve?`I
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finalSerializable id){ P=,\wM6T|
return getHibernateTemplate().load %!A:Ka!m.
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(entity, id); ck0%H#BYY
} D1-/#QN$1
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publicObject get(finalClass entity, ~L<"]V+B
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finalSerializable id){ QObVJg,GD
return getHibernateTemplate().get .^9khKJ;
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(entity, id); ,yNuz@^
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} 5<*ES[S
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publicList findAll(finalClass entity){ r-$xLe7a
return getHibernateTemplate().find("from #$S~QS.g
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" + entity.getName()); !5De?OXe
} S>T ;`,
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publicList findByNamedQuery(finalString *GXPN0^Qjo
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namedQuery){ ]QJ5JtD-
return getHibernateTemplate -j<E_!t
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