Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 n5k^v$'
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 y'!p>/%v
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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 df4^C->:
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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 EkStb#
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分页支持类: Gj7QGIKx
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java代码: /cL9?k;o
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package com.javaeye.common.util; /[|}rqX(
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import java.util.List; b*FU*)<4.
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publicclass PaginationSupport { c(Uj'uLc
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publicfinalstaticint PAGESIZE = 30; SJ@8[n.x
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privateint pageSize = PAGESIZE; +%e%UF@
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privateList items; ^C:{z)"h
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privateint totalCount; ]m/@wW9
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privateint[] indexes = newint[0]; SA`J.4yn
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privateint startIndex = 0; t7*G91Hoq&
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public PaginationSupport(List items, int *%Nns',
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totalCount){ $LxG>db
setPageSize(PAGESIZE); 2[8fFo>
setTotalCount(totalCount); EbBv}9g
setItems(items); =0PNHO\gl
setStartIndex(0); pu2 wEQ
} /\ ,_P
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public PaginationSupport(List items, int K)9j
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totalCount, int startIndex){ SgCqxFii
setPageSize(PAGESIZE); w|
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setTotalCount(totalCount); LM"W)S
setItems(items); ,`%k'ecN
setStartIndex(startIndex); fXF=F,!t
} 8`AcS|k
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public PaginationSupport(List items, int S|{Yvyp
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totalCount, int pageSize, int startIndex){ AMh37Xo
setPageSize(pageSize); Ad}-I%Ie
setTotalCount(totalCount); f7_\).T
setItems(items); 80FCe(U
setStartIndex(startIndex); tAb;/tM3I
} <t?x 'r?@
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publicList getItems(){ zx\.2<K
return items; 6o[0sM_];
} o ;[C(OS
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publicvoid setItems(List items){ dl*_ m3T
this.items = items; Hl^aUp.c
} 2cs?("8e%
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publicint getPageSize(){ G zJ9N`
return pageSize; .iOw0z
} G?Qe"4
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publicvoid setPageSize(int pageSize){ RJtixuvh@
this.pageSize = pageSize; }
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} "J]f0m=
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publicint getTotalCount(){ O_r^oH
return totalCount; ".~MmF
} pX>ua5Z
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publicvoid setTotalCount(int totalCount){ VRtbHam
if(totalCount > 0){ th.M.jas
this.totalCount = totalCount; x\Nhix}1D
int count = totalCount / D 7Gd%
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pageSize; /p"U
if(totalCount % pageSize > 0) g6rv`I$l
count++; B8bvp:Ho|
indexes = newint[count]; iyA*JCD
for(int i = 0; i < count; i++){ 4/*]`
indexes = pageSize * Ep^B,;~
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} +O|_P`HBoI
}else{ <ldid]o
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this.totalCount = 0; c+szU}(f6(
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} ^z[_U}N\}
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publicint[] getIndexes(){ JiKImz
return indexes; [WcS[](ob
} ^K7q<X ,
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publicvoid setIndexes(int[] indexes){ /- DKV~
this.indexes = indexes; C#A@)>
} k)$iK2I
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publicint getStartIndex(){ +<)tql*
return startIndex; Tx y]"_
} yQu vW$
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publicvoid setStartIndex(int startIndex){ h=X7,2/<
if(totalCount <= 0) 5T!&r
this.startIndex = 0; -6uH.
elseif(startIndex >= totalCount) 1t0bUf;(M
this.startIndex = indexes 5|yZEwq
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[indexes.length - 1]; "AT&!t[J
elseif(startIndex < 0)
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this.startIndex = 0; o:Ln._bj
else{ RM)1*l`!E
this.startIndex = indexes |!$ Q<-]f
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[startIndex / pageSize]; {&u Rd?(
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} XZF%0g2$b
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publicint getNextIndex(){ dz8-):
int nextIndex = getStartIndex() + 0Wa#lkn$I
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pageSize; CoKiQUW
if(nextIndex >= totalCount) Us1@\|]
return getStartIndex(); 7^c2e*S
else jeY4yM
return nextIndex; FL59
} g* %bzfk=|
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publicint getPreviousIndex(){ D 5=C^`$2
int previousIndex = getStartIndex() - fW(;
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pageSize; 0rV/qMo;K
if(previousIndex < 0) *^n^nnCwp
return0; Q?Wr7
else ,Yo: &>As
return previousIndex; ty':`)
} QyTh!QM~`
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} yU> T8oFh
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抽象业务类 Xe)Pg)J1
java代码: o\d |CE;>
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/** $,!hD\a
* Created on 2005-7-12 JAN|aCzD
*/ ,Ie<'>hd
package com.javaeye.common.business; m{VL\ g)
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import java.io.Serializable; !5NGlqEF#
import java.util.List; S
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import org.hibernate.Criteria; d"Bo8`_
import org.hibernate.HibernateException; <Uf|PFVj$
import org.hibernate.Session; 61G|?Aax
import org.hibernate.criterion.DetachedCriteria; -H4PRCDH
import org.hibernate.criterion.Projections; NOV.Bs{
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org.springframework.orm.hibernate3.HibernateCallback; se!g4XEWD
import }&mj.hGv
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org.springframework.orm.hibernate3.support.HibernateDaoS AYt*'Zeg!s
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upport; <8$Md4r
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import com.javaeye.common.util.PaginationSupport; @?m+Z"o|z
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public abstract class AbstractManager extends D$ ej+s7
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HibernateDaoSupport { )q^(T1
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privateboolean cacheQueries = false; R !9qQn?
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privateString queryCacheRegion; -W9gH
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publicvoid setCacheQueries(boolean m.!wsw
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cacheQueries){ YjX*)Q_sl?
this.cacheQueries = cacheQueries; *g*VCO
} FbmsN)mv!%
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publicvoid setQueryCacheRegion(String k2pT1QZnt
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queryCacheRegion){ *aI~W^N3
this.queryCacheRegion = c+H)ed>
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queryCacheRegion; ZH!;z-R
} sLNNcj(Cy>
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publicvoid save(finalObject entity){ whw{dfE
getHibernateTemplate().save(entity);
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} \PzN XQ$
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publicvoid persist(finalObject entity){ RFB(d=o5S
getHibernateTemplate().save(entity); 9Kx<\)-GMD
} .3( ;9};
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publicvoid update(finalObject entity){ mLQUcYfR
getHibernateTemplate().update(entity); M= atls
} u"\=^F
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publicvoid delete(finalObject entity){ UP R/XQ
getHibernateTemplate().delete(entity); J,9%%S8/C
} X'jr|s^s
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publicObject load(finalClass entity, ,b4g.CV
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finalSerializable id){ :1*zr
return getHibernateTemplate().load zx7#)*
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(entity, id); 8sH50jeP
} 2Sjt=LOc="
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publicObject get(finalClass entity, I'?6~Sn3
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finalSerializable id){ a&N