Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 }%u#TwZ
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 V~dhTdQ5}
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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 c* ueI5i
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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 ^`kwSC
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分页支持类: , MXU]{
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java代码: $+Ze"E
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package com.javaeye.common.util; 60~;UBm5O
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import java.util.List; 9f!
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publicclass PaginationSupport { g!XC5*}
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publicfinalstaticint PAGESIZE = 30; $Lp [i
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privateint pageSize = PAGESIZE; 8* A%k1+
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privateList items; wyy
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privateint totalCount; i47LX;}
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privateint[] indexes = newint[0]; G[>NP#P
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privateint startIndex = 0; tKV,
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public PaginationSupport(List items, int b$b;^nly
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totalCount){ AIg4u(j
setPageSize(PAGESIZE); ;].X;Ky<
setTotalCount(totalCount); /0/ouA>+
setItems(items); vclc%ws
setStartIndex(0); KA?}o^-F
} 5?^#v
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public PaginationSupport(List items, int 32z4G =l
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totalCount, int startIndex){ ]AYP\\Xi
setPageSize(PAGESIZE); fQ5v?(
setTotalCount(totalCount); T_S3_-|{==
setItems(items); i M !`4
setStartIndex(startIndex); 6bPxEILm
} ?z.?(xZ 6
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public PaginationSupport(List items, int "B{3q`(
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totalCount, int pageSize, int startIndex){ |<u+Xi
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setPageSize(pageSize); M[`[+5v
setTotalCount(totalCount); O]tR~a
setItems(items); (}39f
setStartIndex(startIndex); SZW_V6\t>
}
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publicList getItems(){ x[58C +
return items; &za
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publicvoid setItems(List items){ +bE{g@%@+
this.items = items; X\m\yv}}
} n}UJ-\$
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publicint getPageSize(){ M)#9Q=<
return pageSize; >8"(go+02
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publicvoid setPageSize(int pageSize){ D>y5&`
this.pageSize = pageSize; svmb~n &x6
} $l*?Ce:
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publicint getTotalCount(){ >UCg3uFj
return totalCount; TnN
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} ]R""L<K%HF
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publicvoid setTotalCount(int totalCount){ ^W$R{`
if(totalCount > 0){ x6,ozun
this.totalCount = totalCount; >1`4]%
int count = totalCount / |~5cNm
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pageSize; #ELeW3
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if(totalCount % pageSize > 0) b\0>uU
count++; pL,XHR@Iv
indexes = newint[count]; u9 &$`N_G
for(int i = 0; i < count; i++){ QQW}.>N
indexes = pageSize * )!-gT
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} 5! );4+
}else{ 9HJYrzf{%
this.totalCount = 0; O(I^:_eH
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publicint[] getIndexes(){ /}6I3n
return indexes; OpaRQ=
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publicvoid setIndexes(int[] indexes){ Az@@+?,%Y
this.indexes = indexes; X[$h &]
} 4tm%F\Izy
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publicint getStartIndex(){ z6U'"T"a
return startIndex; Q`*U U82!
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publicvoid setStartIndex(int startIndex){ L6CI9C;-b
if(totalCount <= 0) bIGcszWr
this.startIndex = 0; -m}'I8
elseif(startIndex >= totalCount) [RKk-8I
this.startIndex = indexes ufk2zL8y
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[indexes.length - 1]; b4L7]&
elseif(startIndex < 0) !AXLoq$SY
this.startIndex = 0; >0@w"aKn
else{ ;)h?P.]
this.startIndex = indexes :!s7B|_U
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[startIndex / pageSize]; #~'d
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} #qVTB@d
} 9@CRL=
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publicint getNextIndex(){ J\@g3oGw
int nextIndex = getStartIndex() + vk
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pageSize; a_!H_J
if(nextIndex >= totalCount) L E\rc A
return getStartIndex(); Tl yyJ{~
else ?<jWEz=
return nextIndex; s3sRMB2
} >bWpj8Kv
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publicint getPreviousIndex(){ %P ~;>4i,
int previousIndex = getStartIndex() - Jd/d\P
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pageSize; oF$#7#0`;8
if(previousIndex < 0) jywS<9c@
return0; 3!F^vZ.
else G~y:ZEnN[
return previousIndex; OB9E30
} k~AtnI
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抽象业务类 jR}EBaI}
java代码: Psf'^42(v
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/** ^f>c_[fR
* Created on 2005-7-12 )U|V |yem'
*/ W5'6L=WG
package com.javaeye.common.business; Q4 &P\V
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import java.io.Serializable;
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import java.util.List; MOh&1]2j5
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import org.hibernate.Criteria; 4z P"h0
import org.hibernate.HibernateException; mfg>69,w
import org.hibernate.Session; Fc[vs52
import org.hibernate.criterion.DetachedCriteria; mCt/\
import org.hibernate.criterion.Projections; 7WH'GoBh
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org.springframework.orm.hibernate3.HibernateCallback; Vaf,
import syLdm3d|
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org.springframework.orm.hibernate3.support.HibernateDaoS HqsqUS3[
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upport; Y [)mHs2
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import com.javaeye.common.util.PaginationSupport; xO:h[
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public abstract class AbstractManager extends 4u*n7di$9d
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HibernateDaoSupport { ::{\O\w
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privateboolean cacheQueries = false; JtY$AP$
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privateString queryCacheRegion; /-!Fr:Ox>
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publicvoid setCacheQueries(boolean zd 2_k 9
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cacheQueries){ c;/vzIJj
this.cacheQueries = cacheQueries; kF'9@*?J
} qbSI98rw
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publicvoid setQueryCacheRegion(String +dLUq2
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queryCacheRegion){ Wn6m$ =
this.queryCacheRegion = ]r!|@AWrQ\
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queryCacheRegion; p:b{>lM
} qF^P\cD
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publicvoid save(finalObject entity){ h
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getHibernateTemplate().save(entity); +C;;4s)
} [4C_iaE
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publicvoid persist(finalObject entity){ 72RTEGy
getHibernateTemplate().save(entity); nm`(;<W
} %JPr 7 }
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publicvoid update(finalObject entity){ kD+#| f
getHibernateTemplate().update(entity); Zs}h>$E5_B
} PW%ith1)<
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publicvoid delete(finalObject entity){ 8IL5:7H8
getHibernateTemplate().delete(entity); v
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} <(TAA15Xol
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publicObject load(finalClass entity, &S