Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 D~8f6Ko"m
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 kA\;h|Y3
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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 kD"dZQx
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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 >8jDW "Ua
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分页支持类: P,tN;c
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java代码: @AVx4,!>[
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package com.javaeye.common.util; :tR%y"
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import java.util.List; nef-xxXC^I
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publicclass PaginationSupport { EYG&~a>L*
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publicfinalstaticint PAGESIZE = 30; ^<sX^V+{
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privateint pageSize = PAGESIZE; eYR/kZ%<
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privateList items; 2NE/ZqREg
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privateint totalCount; xp><7{
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privateint[] indexes = newint[0]; _FAwW<S4B
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privateint startIndex = 0; 1mA)=hu
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public PaginationSupport(List items, int zA-?x1th&
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totalCount){ 0!+ab'3a
setPageSize(PAGESIZE); "@`M>)*o
setTotalCount(totalCount); eb.`Q+Gb
setItems(items); +wT,dUin_<
setStartIndex(0); <&W3\/xx
} /Tv<
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public PaginationSupport(List items, int Z AZQFr'*
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totalCount, int startIndex){ 2LD4f[a;
setPageSize(PAGESIZE); _k6N(c2Nd
setTotalCount(totalCount); HjnHl-
setItems(items); Jz3 q
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setStartIndex(startIndex); ojyG|Y
} j|+B|
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public PaginationSupport(List items, int 5<d
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totalCount, int pageSize, int startIndex){ `{tykYwCLc
setPageSize(pageSize); %}$6#5"';
setTotalCount(totalCount); |vEfE{
setItems(items); [vV-0Lx"
setStartIndex(startIndex); (v(_XlMK
} NK"y@)%0
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publicList getItems(){ O#u)~C?)8
return items; u45e>F=
} [nG/>Z]W
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publicvoid setItems(List items){ ;{HxY98Q
this.items = items; sH+]lTSX6{
} (y(V,kXwa8
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publicint getPageSize(){ LM*9b
return pageSize;
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} M5P63=1+
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publicvoid setPageSize(int pageSize){ ^Jc~G~x4*
this.pageSize = pageSize; k^ZUOWmU|
} z|pH>R?:
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publicint getTotalCount(){ %iJ6;V4
return totalCount; EE%OD~u&9#
} ?w<x_Lo
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publicvoid setTotalCount(int totalCount){ egP3q5~
if(totalCount > 0){ q)@.f.
this.totalCount = totalCount; ?(g kkYI
int count = totalCount / I~q}M!v~
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pageSize; /Ee0S8!Z!1
if(totalCount % pageSize > 0) BE3~f6 `
count++; e=2;z
indexes = newint[count]; ^//N-?Fx
for(int i = 0; i < count; i++){ ?*4]LuK6
indexes = pageSize * ef,6>xv
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} ]8H;LgM2
}else{ 2etlR
this.totalCount = 0; tX)]ZuEi$
} *b.>pY?2|
} 4|XE
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publicint[] getIndexes(){ /&kTVuN"(
return indexes; XeZv%` ?
} C?E;sRr0
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publicvoid setIndexes(int[] indexes){ gu"Agct4
this.indexes = indexes; -iJ[9O
} $*2uI?87}:
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publicint getStartIndex(){ &"L3U
return startIndex; g@1MImc'!
} .#+rH}=Z
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publicvoid setStartIndex(int startIndex){ J@R+t6$3O
if(totalCount <= 0) ;>CmVC'/
this.startIndex = 0; mBnC]$<R
elseif(startIndex >= totalCount) nbOMtK
this.startIndex = indexes !_c<j4O
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[indexes.length - 1];
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elseif(startIndex < 0) dXdU4YJX
this.startIndex = 0; )@Bt[mfrVD
else{ y2<g96
this.startIndex = indexes N>gv!z[E
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[startIndex / pageSize]; 1nvs51?H
} )W c#?K
} "E'OPR
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publicint getNextIndex(){ np)-Yzr
int nextIndex = getStartIndex() + -gC=%0sp\
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pageSize; 5g/WQo\
if(nextIndex >= totalCount) us5`?XeX]
return getStartIndex(); {N
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else ;f6G&>p
return nextIndex; ,a?em'=
} [#)$BXG~y
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publicint getPreviousIndex(){ (j cLzq
int previousIndex = getStartIndex() - u}u2{pO!
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pageSize; rT"8e*LT
if(previousIndex < 0) g\X"E>X
return0; qk:F6kL\`
else VT+GmS
return previousIndex; w0Us8JNGz
} D* Vr)J
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} {kmaMP
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抽象业务类 JfC.U,7Nc
java代码: ;9;.!4g/T
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/** czedn_}%Q
* Created on 2005-7-12 nY(jN D
*/ A
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package com.javaeye.common.business; 5*4P_q(AxD
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import java.io.Serializable; Z1q'4h=F.
import java.util.List; m6g+ B >
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import org.hibernate.Criteria; NB16O!r
import org.hibernate.HibernateException; o5zth^p[
import org.hibernate.Session; )zr/9aV
import org.hibernate.criterion.DetachedCriteria; NUm3E4
import org.hibernate.criterion.Projections; ^DIN(0u)
import R=8!]Oi6
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org.springframework.orm.hibernate3.HibernateCallback; nA+[[(6
import 9}3W0F;
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org.springframework.orm.hibernate3.support.HibernateDaoS U:8^>_
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upport; rytizbc
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import com.javaeye.common.util.PaginationSupport; tT'd]
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public abstract class AbstractManager extends )w/f 'fq
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HibernateDaoSupport { 36lIV,YnU
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privateboolean cacheQueries = false; kqHh@]Z0'
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privateString queryCacheRegion; J"[OH,/_
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publicvoid setCacheQueries(boolean {)F-US
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cacheQueries){ }rGDM
this.cacheQueries = cacheQueries; c*\^61T
} *TMg.
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publicvoid setQueryCacheRegion(String {d )Et;_
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queryCacheRegion){ b^A&K@[W#,
this.queryCacheRegion = %/UQ0d~b
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queryCacheRegion; 0A}'.LI
} ifBJ$x(B.
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publicvoid save(finalObject entity){ TF3Tha]
getHibernateTemplate().save(entity); t`DUY3>36
} _&B