Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 HtS#_y%(
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Pd&,G$l
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 s|p(KWo2U
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 +ks$UvtY
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分页支持类: SJF 2k[da
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java代码: Z0z)
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package com.javaeye.common.util; `bi
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import java.util.List; :!hk~#yvJ9
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publicclass PaginationSupport { ?xf~!D
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publicfinalstaticint PAGESIZE = 30; )rS^F<C
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privateint pageSize = PAGESIZE; td`wNy\
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privateList items; ur`V{9g
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privateint totalCount; @>Biyb
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privateint[] indexes = newint[0]; ?/^VOj4&
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privateint startIndex = 0; `oan,wq+
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public PaginationSupport(List items, int 7~ILRj5Nq
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totalCount){ DvU~%%(0^
setPageSize(PAGESIZE); W|)(|W
setTotalCount(totalCount); 2voNgY
setItems(items); Z^C!RSQ
setStartIndex(0); @D2`*C9
} Dj/Q1KY$m
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public PaginationSupport(List items, int Vc{/o=1u
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totalCount, int startIndex){ l!Nvn$hm
setPageSize(PAGESIZE); AZ}%MA;q
setTotalCount(totalCount); N/`g?B[
setItems(items); ~V|KT}H
setStartIndex(startIndex); 1.xw'i
} 7?*~oVZW
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public PaginationSupport(List items, int yFa&GxSq
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totalCount, int pageSize, int startIndex){ jWz|K
setPageSize(pageSize); Ab/v_mA;
setTotalCount(totalCount); RNsJ!or
setItems(items); fdvi}SS8
setStartIndex(startIndex); pZW}^kg=
}
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publicList getItems(){ mq>*W'M
return items; -_:JQ
} YL_!#<k@
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publicvoid setItems(List items){ dVK@Fgo
this.items = items; b49|4
} ZD
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publicint getPageSize(){ CAcOWwDm
return pageSize; sz){uOI
} q|m#IVc
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publicvoid setPageSize(int pageSize){ us(sZG
this.pageSize = pageSize; ke mr@_
} H7 o$O
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publicint getTotalCount(){ <PH3gyC
return totalCount; W\z L
} '&&~IB4ud
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publicvoid setTotalCount(int totalCount){ t(Cq(.u`:
if(totalCount > 0){ \v B9fA:*
this.totalCount = totalCount; \["1N-q b
int count = totalCount / +/1P^U /
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pageSize; 1mkQ"E4
if(totalCount % pageSize > 0) hwG||;&/H
count++; 9;'>\ImI
indexes = newint[count]; V~tu<"%
for(int i = 0; i < count; i++){ E9
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indexes = pageSize * xQcMQ{&;
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} ?3e!A9x
}else{ sP=2NqU3Q
this.totalCount = 0; BUboP?#%)
} AF07KA#
} CgaB) `.
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publicint[] getIndexes(){ w96j,rEC
return indexes; rYP8V
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} u/K)y:ZZ
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publicvoid setIndexes(int[] indexes){ :$u{
this.indexes = indexes; 8=b{'s^^F
} bTI&#Hu
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publicint getStartIndex(){ >(YPkmH
return startIndex; ~Y}Z4" o
} <'+R%6
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publicvoid setStartIndex(int startIndex){ bE%mgaOh
if(totalCount <= 0) X.W#=$;$:
this.startIndex = 0; ^.B `Z{Jb
elseif(startIndex >= totalCount) )yz9? ]a
this.startIndex = indexes J_)z:`[yE
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[indexes.length - 1]; (h8hg+l
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elseif(startIndex < 0) ) J:'5hz
this.startIndex = 0; Bwi[qw
else{ "m\UqQGX
this.startIndex = indexes lMI
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[startIndex / pageSize]; B "s8i{Vm
} @[Jt~v
} 8Y;zs7Y
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publicint getNextIndex(){ Y+Q,4s
int nextIndex = getStartIndex() + ~,3v<A[5Vi
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pageSize; zMHf?HQ-Z
if(nextIndex >= totalCount) <aQ; "O~
return getStartIndex(); IU;pkgBj0Y
else vYTPZ@RL
return nextIndex; t=@Jw
} Z-;uzx
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publicint getPreviousIndex(){ 9lazo
int previousIndex = getStartIndex() - V.G9J!?<P
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pageSize; >8{`q!=|~
if(previousIndex < 0) XiZ Zo
return0; `'tw5}
else O7#}8-@}<u
return previousIndex; bQnwi?2
} ]$`s}BN
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} WRU@i;l
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抽象业务类 qjRiTIp9q
java代码: I!
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/** } k%\
* Created on 2005-7-12 v!v0,?b*
*/ B}xo|:f!zj
package com.javaeye.common.business; {Z{NH:^
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import java.io.Serializable; 7{/:,
import java.util.List; :e9jK[)h0
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import org.hibernate.Criteria; Y.hH
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import org.hibernate.HibernateException; U"R.!=v
import org.hibernate.Session; RAkFgC~
import org.hibernate.criterion.DetachedCriteria; .f!eRV.&
import org.hibernate.criterion.Projections; RU ,N_GV
import 0?*I_[Y
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org.springframework.orm.hibernate3.HibernateCallback; -gX2{dW
import g>oYEFFJ
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org.springframework.orm.hibernate3.support.HibernateDaoS SJuf`
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upport; YKS'#F2
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import com.javaeye.common.util.PaginationSupport; "=RoI
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public abstract class AbstractManager extends p<nBS"/
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HibernateDaoSupport { ]j#$. $q
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privateboolean cacheQueries = false; 8`*9jr
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privateString queryCacheRegion; 9P>S[=
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publicvoid setCacheQueries(boolean QNI|h;D
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cacheQueries){ wyhf:!-I
this.cacheQueries = cacheQueries; y Q @=\'
} EqDYQ
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publicvoid setQueryCacheRegion(String qQRYHo>/e
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queryCacheRegion){ Rw^YTv
this.queryCacheRegion = jN[6JY1
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queryCacheRegion; )BTs *7 j
} S^"e5n2
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publicvoid save(finalObject entity){ GSb)|mj
getHibernateTemplate().save(entity); =FJ9wiL
} s6hWq&C
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publicvoid persist(finalObject entity){ !?M_%fNE
getHibernateTemplate().save(entity); M&T/vByTn_
} d/zX%
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publicvoid update(finalObject entity){ Leick6
getHibernateTemplate().update(entity); qJzK8eW
} v})Ti190
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publicvoid delete(finalObject entity){ R;,HtN
getHibernateTemplate().delete(entity); K?m:.ZM
} H+&w