Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ]PX}b
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 T\sNtdF`:
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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 C0m\SNR
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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 \ TL82H@D
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分页支持类: <GZhH:
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java代码: pXW`+<g0
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package com.javaeye.common.util; X47!E
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import java.util.List; =vEkMJOs
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publicclass PaginationSupport { Ay$>(;
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publicfinalstaticint PAGESIZE = 30; " $)yB
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privateint pageSize = PAGESIZE; J(9=T<%T
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privateList items; A*0*sZ0
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privateint totalCount; r{ @ `o@q
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privateint[] indexes = newint[0]; U[fSQ`&D
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privateint startIndex = 0; _*`q(dYcf
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public PaginationSupport(List items, int W_JhNe
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totalCount){ r)B3es&&
setPageSize(PAGESIZE); +by|
setTotalCount(totalCount); !: |nI77|
setItems(items); ` d`&R.'
setStartIndex(0); fM:80bnL+
} 2OC dG
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public PaginationSupport(List items, int n\>.T[$"
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totalCount, int startIndex){ .^H1\p];Lw
setPageSize(PAGESIZE); @ ;J|xkJ
setTotalCount(totalCount); 'j#a%j@{
setItems(items); \+]O*Bm&`8
setStartIndex(startIndex); b|wWHNEdb,
} CWMlZVG
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public PaginationSupport(List items, int OqEHM%j
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totalCount, int pageSize, int startIndex){ 0O;
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setPageSize(pageSize);
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setTotalCount(totalCount); sT1jF3
setItems(items); "m>};.lj
setStartIndex(startIndex); Sf/W9Jw
} rCrr"O#j
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publicList getItems(){ *a4
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return items; :SeLkQC
} V8v,jS$l4
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publicvoid setItems(List items){ mxhW|}_-j
this.items = items; OfLM
} ]+,nA R
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publicint getPageSize(){ *NjMb{[ZQ
return pageSize; hDbHSZ
} k>-'AWH^v
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publicvoid setPageSize(int pageSize){ Cha?7F[xL
this.pageSize = pageSize; d<?X3&J
} 6#-Z@fz%
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publicint getTotalCount(){ LOt#1Qv
return totalCount; 0gi}"v
} ,s81rJ-
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publicvoid setTotalCount(int totalCount){ %Fm`Y.l
if(totalCount > 0){ QvNi8TB
this.totalCount = totalCount; 1Kc{#+a^
int count = totalCount / J\GKqt;5@
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pageSize; jL2MW(d^Q
if(totalCount % pageSize > 0) JrxP,[qJG
count++; N$*>suQ,
indexes = newint[count]; 4SBLu%=s%
for(int i = 0; i < count; i++){ J ZNyC!u
indexes = pageSize * dr>]+H=3E
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} o"f%\N0_8
}else{ {{GHzW
this.totalCount = 0; LVWxd}0
} ls]Elo8h1f
} 5I_hh?N4Z
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publicint[] getIndexes(){ BiI{8`M!$x
return indexes; &U854
} ur`}v|ZY
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publicvoid setIndexes(int[] indexes){ AF
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this.indexes = indexes; Q!M sy<v
} >sB=\
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publicint getStartIndex(){ 739l%u }<
return startIndex; 8Q)y%7{6
} ?n73J wH
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publicvoid setStartIndex(int startIndex){ !zF4 G,W
if(totalCount <= 0) UU-v;_oP
this.startIndex = 0; }$w4SpR
elseif(startIndex >= totalCount) yqC+P
this.startIndex = indexes ~F=#}6kg_
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[indexes.length - 1]; .Wd.)^?
elseif(startIndex < 0) E)RI!0Ra
this.startIndex = 0;
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else{ ,!8*g[^O
this.startIndex = indexes 4bFv"b
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[startIndex / pageSize]; 6Lav.x\W
} GF9ZL
} moZ)|y
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publicint getNextIndex(){ v] W1F,u
int nextIndex = getStartIndex() + ~x9 W{B]
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pageSize; oR4fK
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if(nextIndex >= totalCount) iRkOH]+K
return getStartIndex(); +D6-m
else (4E.Li<O
return nextIndex; 2OA8
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} Y!Usce
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publicint getPreviousIndex(){ R4[. n@
int previousIndex = getStartIndex() - tOu90gu
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pageSize; =kyJaT^5[
if(previousIndex < 0) O[3q9*(
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else 2M!+gk=+
return previousIndex; I67k M{V
} zDKLo 3:
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} VGkW3Nt0
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抽象业务类 6:8EZ'y
java代码: }UJdE#4
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/** 4Ub?*
* Created on 2005-7-12 ZA 99vO
*/ oX%PsS
package com.javaeye.common.business; )< X=z
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import java.io.Serializable; ft*G*.0kO
import java.util.List; rPrEEWS0)
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import org.hibernate.Criteria; mmh nw(/
import org.hibernate.HibernateException; \" 5F;J
import org.hibernate.Session; !nZI? z ;
import org.hibernate.criterion.DetachedCriteria; a3DoLq"/
import org.hibernate.criterion.Projections; bw<~R2[
import GN}9$:
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org.springframework.orm.hibernate3.HibernateCallback; UU;Ysj
import Y2ah zB
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org.springframework.orm.hibernate3.support.HibernateDaoS ?eYchVq
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upport; FRs|!\S=
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import com.javaeye.common.util.PaginationSupport; 1+.y,}F6b
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public abstract class AbstractManager extends q/aL8V<"z
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HibernateDaoSupport { KU8Cl>5
;
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privateboolean cacheQueries = false; (STWAwK-
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privateString queryCacheRegion; p~k`Z^xY$
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publicvoid setCacheQueries(boolean Wr}a\}R
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cacheQueries){ oeRYyJ
this.cacheQueries = cacheQueries; 2={K-s20
} PgGrk5;
} SWA|x
publicvoid setQueryCacheRegion(String ZJ{+_ax0K
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queryCacheRegion){ &6~ncQWu
this.queryCacheRegion = =Un 6|]
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queryCacheRegion; `Q!FMv6Y^
} o@Cn_p^X
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publicvoid save(finalObject entity){ lD+y,";
getHibernateTemplate().save(entity); BGk<NEzH
} 2EI m
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publicvoid persist(finalObject entity){ GoZJDE3
getHibernateTemplate().save(entity); JUUF^/J
} Qnu&GBM
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publicvoid update(finalObject entity){ o<eWg
getHibernateTemplate().update(entity); x]jdx#'
} 6iAc@
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publicvoid delete(finalObject entity){ hPCSLJ
getHibernateTemplate().delete(entity); N]P*6sf-6
} cJp1 <R
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publicObject load(finalClass entity, 1.cUolnr
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finalSerializable id){ jP{]LJ2.6\
return getHibernateTemplate().load D9pxe qf+=
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(entity, id); *U[Q =w
} PrYWha=c-
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publicObject get(finalClass entity, Wb-'E%K
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finalSerializable id){
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return getHibernateTemplate().get p<^/T,&I
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