Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 9% T"W
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 N5=BjXSAg
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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 i)|jLrW~e
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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 }l7+W4~
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分页支持类: 950N\Y@u
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java代码:
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package com.javaeye.common.util; lJu^Bcrv
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import java.util.List; Z{0BH{23
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publicclass PaginationSupport { xeU|5-d'
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publicfinalstaticint PAGESIZE = 30; yKV{V?h?
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privateint pageSize = PAGESIZE; V+ ("kz*
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privateList items; `sCaGCp
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privateint totalCount; XJ4f;U
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privateint[] indexes = newint[0]; YK3>M"58
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privateint startIndex = 0; DQXUh#t\(]
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public PaginationSupport(List items, int eTx9fxw
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totalCount){ [v"Z2F<.=
setPageSize(PAGESIZE); `3rwqcxA
setTotalCount(totalCount); .Az36wD
setItems(items); E?XaU~cpc
setStartIndex(0);
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public PaginationSupport(List items, int f)/Z7*Z
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totalCount, int startIndex){ +{I_%SsG
setPageSize(PAGESIZE); `uMEK>b
setTotalCount(totalCount); ]5Uuz?:e
setItems(items); [b3!H{b#
setStartIndex(startIndex); \#9LwC"8;
} MuY:(zC%
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public PaginationSupport(List items, int )r9 9zdUk
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totalCount, int pageSize, int startIndex){ l'+3
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setPageSize(pageSize); &n k)F<
setTotalCount(totalCount); Lj1l]OD
setItems(items); ;?2)[a
setStartIndex(startIndex); hC:'L9Y
} p`Pa;=L
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publicList getItems(){ O^@8Drgc
return items; x4'@U<
} 7s|'NTp
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publicvoid setItems(List items){ g<:Lcg"u
this.items = items; C&
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} r[L%ap\{
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publicint getPageSize(){ ;}46Uc#WS
return pageSize; +94)BxrY
} b' o]Y
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publicvoid setPageSize(int pageSize){ ZLkl:'E_
this.pageSize = pageSize; DK4yAR,g
} )O1]|r7v
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publicint getTotalCount(){ *'/,
return totalCount; P>7Xbm,VP
} k)p`x"To
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publicvoid setTotalCount(int totalCount){ ?*fa5=ql
if(totalCount > 0){ Ww]$zd-bo
this.totalCount = totalCount; 6R6Ub
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int count = totalCount / $p0nq&4c
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pageSize; 5p0~AN)
if(totalCount % pageSize > 0) tDK@?PfKz
count++; |`T(:ZKXZ2
indexes = newint[count]; Y=mr=]q
for(int i = 0; i < count; i++){ zKQ<Zr
indexes = pageSize * :;k?/KU7
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} 7d: ]o>
}else{ /G||_Hc
this.totalCount = 0; 9c>i>Vja!
} zwfft
} 9z7_D_yN2
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publicint[] getIndexes(){ 5
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return indexes; DSrU7#
} *QC6zJ
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publicvoid setIndexes(int[] indexes){ O =Z}DGa+
this.indexes = indexes; .a%6A#<X
} *[Hp&6f
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publicint getStartIndex(){ e+[*4)Qfy
return startIndex; 3<xE_ \DR
} BhJ>G%
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publicvoid setStartIndex(int startIndex){ p _gN}v
if(totalCount <= 0) _{*} )&!M
this.startIndex = 0; ZbFD |~[ V
elseif(startIndex >= totalCount) bfxE}>
this.startIndex = indexes 5nG\J
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[indexes.length - 1]; wLV,E,gM
elseif(startIndex < 0) ng1E'c]0@
this.startIndex = 0; F @PPhzZ
else{ iQG!-.aX
this.startIndex = indexes QK-aH1r
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[startIndex / pageSize]; a"#t'\
} ;d?BVe?
} Rh'z;Gyr
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publicint getNextIndex(){ 14,)JZN
int nextIndex = getStartIndex() + UTA|Ps$
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pageSize; H=/1d.p
if(nextIndex >= totalCount) d^v#x[1msZ
return getStartIndex(); N63?4'_W
else Ia2WBs=
return nextIndex; mb\T)rj
} Rk$7jZdTf
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publicint getPreviousIndex(){ &CG94
int previousIndex = getStartIndex() - R?wZ\y Ks}
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pageSize; t^#1=nK
if(previousIndex < 0) )vtbA=RH?
return0; i~!g9o(
else W~ yb>+u
return previousIndex; Gs:g
} {cdICWy(F3
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} m$8siF{<q
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抽象业务类 v^9eTeFO
java代码: 7[Us.V@
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/** }?m0bM
* Created on 2005-7-12 re/-Yu$'
*/ }9OMXLbRv
package com.javaeye.common.business; X@~/.H5
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import java.io.Serializable; 6#=Iv X4
import java.util.List; "im5Fnu
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import org.hibernate.Criteria; eaRa+ <#u
import org.hibernate.HibernateException; HNZ$CaJh
import org.hibernate.Session; XpAJP++
import org.hibernate.criterion.DetachedCriteria; z_c-1iXCW
import org.hibernate.criterion.Projections; $WYt`U;*lj
import qnP4wRpr
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org.springframework.orm.hibernate3.HibernateCallback; p{E(RsA
import U6JD^G=qR,
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org.springframework.orm.hibernate3.support.HibernateDaoS 3W'fEh5
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upport; Y{dSQ|xz^
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import com.javaeye.common.util.PaginationSupport; 7w73,r/D8A
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public abstract class AbstractManager extends '6D"QDZB
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HibernateDaoSupport { MR
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privateboolean cacheQueries = false; k}LIMkEa4a
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privateString queryCacheRegion;
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publicvoid setCacheQueries(boolean ZK4V-?/[6
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cacheQueries){ ;adZ*'6u
this.cacheQueries = cacheQueries; (j>`+F5f
} ET[5`z
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publicvoid setQueryCacheRegion(String :$I"n\
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queryCacheRegion){ 6jpzyf=~
this.queryCacheRegion = &>-'|(m+2
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queryCacheRegion; 8wWp+Hk
} #19O5
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publicvoid save(finalObject entity){ Gza=
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getHibernateTemplate().save(entity); w/NT 5
} _;}$/
} W]A`-Jv
publicvoid persist(finalObject entity){ %@QxU-k_
getHibernateTemplate().save(entity); QFTiE1mGH
} Pll%O@K
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publicvoid update(finalObject entity){ #8jiz+1 _
getHibernateTemplate().update(entity); aPJTH0u
} t %u0=V
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publicvoid delete(finalObject entity){ #>yOp *
getHibernateTemplate().delete(entity); |X{j^JP5
} C.4(8~Y=~
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publicObject load(finalClass entity, |kmP#`P~
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finalSerializable id){ Gd!_9S`68
return getHibernateTemplate().load $.C\H,H
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(entity, id); @zGF9O<3,@
} M8lw;
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publicObject get(finalClass entity, h]@'M1D%
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finalSerializable id){ Xg.Lo2s
return getHibernateTemplate().get W.
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(entity, id); o4: e1
} 548L^"D
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publicList findAll(finalClass entity){ G{?`4=K
return getHibernateTemplate().find("from 0%xb):Ctw
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" + entity.getName()); dLqBu~*
} @oY+b!L
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publicList findByNamedQuery(finalString Jd `Qa+
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namedQuery){ -[!t=qi
return getHibernateTemplate 2KO`+
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().findByNamedQuery(namedQuery); &y0Gdzf