Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 U81;7L8
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Fj,(_^
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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 /4^G34
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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 ;fj9n-
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分页支持类: :;q>31:h
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java代码: 2DUr7rM
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package com.javaeye.common.util; {f&NStiB
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import java.util.List; Pf{`/UlD
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publicclass PaginationSupport { T^N L:78
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publicfinalstaticint PAGESIZE = 30; 6EZ1YG}
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privateint pageSize = PAGESIZE; W\'Nv/L
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privateList items; K q/~T7Ru
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privateint totalCount; yB=C5-\F
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privateint[] indexes = newint[0]; .|U4N/XN%q
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privateint startIndex = 0; ZU)BJ!L,s
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public PaginationSupport(List items, int )-)ss"\+Ju
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totalCount){ y-%nJD$
setPageSize(PAGESIZE); pn|p(6
setTotalCount(totalCount); y#&$f
setItems(items); \y[Bu^tk
setStartIndex(0); *&(2`#C;
} fV*}c`
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public PaginationSupport(List items, int 1!X1wCT
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totalCount, int startIndex){ O>nK,.
setPageSize(PAGESIZE); Z+r%_|kZ
setTotalCount(totalCount); HE*7\"9
setItems(items); P8"6"}B;T
setStartIndex(startIndex); ht2
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public PaginationSupport(List items, int ]cn/(U`
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totalCount, int pageSize, int startIndex){ A*rZQh
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setPageSize(pageSize); A<mj8qz
setTotalCount(totalCount); f3/SO+Me}
setItems(items); YR?3 61FK
setStartIndex(startIndex); ;I[ht
} Y||yzJdC
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publicList getItems(){ a3Z:C!|O'
return items; L[CU
} ?@3#c
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publicvoid setItems(List items){ 67}]s@:l](
this.items = items; P#w}3^
} r hiS
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publicint getPageSize(){ m5X3{[a:
return pageSize; 8$2l^
} BPwI8\V
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publicvoid setPageSize(int pageSize){ JX2mTQ
this.pageSize = pageSize; 17WNJ
} ,DexJ1
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publicint getTotalCount(){ G/NTe
return totalCount; ;[FW!
} 8FB\0LA!g
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publicvoid setTotalCount(int totalCount){ }l,T~Pjb
if(totalCount > 0){ bc
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this.totalCount = totalCount; {z.[tvE8h
int count = totalCount / Aqa6R+c
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pageSize; 4}.WhE|h
if(totalCount % pageSize > 0) z0T`5NG@
count++; ]]\)=F`n77
indexes = newint[count];
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for(int i = 0; i < count; i++){ zj~8>QnKk
indexes = pageSize * 70'}f
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} \?bwm&6+r
}else{ (! xg$Kz@
this.totalCount = 0; W2}%zux
} Py|H?
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publicint[] getIndexes(){ S1D9AcK
return indexes; Zk~nB}Xw
} e*Uz#w:
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publicvoid setIndexes(int[] indexes){ @m+pr\h(
this.indexes = indexes; >{O[t2&
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publicint getStartIndex(){ $w|o@ Ml)
return startIndex; /Oq1q._9F
} s,eld@
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publicvoid setStartIndex(int startIndex){ 2"pE&QNd
if(totalCount <= 0) z1Bj_u{
this.startIndex = 0; SRA|7g}7W
elseif(startIndex >= totalCount) !Z#_X@NFc
this.startIndex = indexes v+xgxQGYH
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[indexes.length - 1]; B'G*y2UnG
elseif(startIndex < 0) -D!#W%y8
this.startIndex = 0; Ft3N#!ubl
else{ O, bfdc[g4
this.startIndex = indexes }4bB7,j
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[startIndex / pageSize]; ](B&l{V
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} *k3 d^9o#
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publicint getNextIndex(){ /3)YWFZZc
int nextIndex = getStartIndex() + pRQfx^On
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pageSize; F<PWBs%
if(nextIndex >= totalCount) *=-__|t
return getStartIndex(); &[?u1qQ%o
else w5dIk]T
return nextIndex; xm%[}Dt]
} Bq$e|t)'
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publicint getPreviousIndex(){ ,cGwtt(
int previousIndex = getStartIndex() - BiHiVhD_
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pageSize; ;kyL>mV{
if(previousIndex < 0) uPv;y!Lsa@
return0; )8 "EI-/.
else ,<uiitOo
return previousIndex; /(hP7_]`2
} CX&yjT6`
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} <?q&PCAn^
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抽象业务类 $nGbT4sc
java代码: >D`fp
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/** Se^/VVm
* Created on 2005-7-12 w-0O j
*/ a'_MhJ zs
package com.javaeye.common.business; J'G`=m"-'
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import java.io.Serializable; G*vpf~q?
import java.util.List; +!L_E6pyXE
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import org.hibernate.Criteria; 1c<CEq:?e%
import org.hibernate.HibernateException; .yK\&q[<
import org.hibernate.Session; h30QCk
import org.hibernate.criterion.DetachedCriteria; zJG x5JC
import org.hibernate.criterion.Projections; .WL\:{G8;
import m'Ek p
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org.springframework.orm.hibernate3.HibernateCallback; RAg|V:/M
import Uf7F8JZmM
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org.springframework.orm.hibernate3.support.HibernateDaoS 0TuOY%+
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upport; PxP?hk
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import com.javaeye.common.util.PaginationSupport; -~<q,p"e
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public abstract class AbstractManager extends 0XQ".:+h
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HibernateDaoSupport { MuFU?3ovG*
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privateboolean cacheQueries = false; l$p_])x
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privateString queryCacheRegion; /,rF$5G,
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publicvoid setCacheQueries(boolean skR,M=F~
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cacheQueries){ s!j(nUd/
this.cacheQueries = cacheQueries; ^EuyvftZ
} uwH)/BW)[
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publicvoid setQueryCacheRegion(String ^7~SS2t!
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queryCacheRegion){ ?G>5 D`V
this.queryCacheRegion = Top#u
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queryCacheRegion; p+`*~6Jj/
} *0&i'0>
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publicvoid save(finalObject entity){ MOqA$b
getHibernateTemplate().save(entity); -9H!j4]T?
} /4"S}P>f
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publicvoid persist(finalObject entity){ l9ifUhe
getHibernateTemplate().save(entity); llZ"uTK\M
} ;8;~C"
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publicvoid update(finalObject entity){ St7D.|
getHibernateTemplate().update(entity); H%NLL4&wu
} (!>g8=`"
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publicvoid delete(finalObject entity){ 2ucF(^
getHibernateTemplate().delete(entity); Xg!|F[i
} :S+U}Sm[
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publicObject load(finalClass entity, 5cNzG4z
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finalSerializable id){ /H;kYx
return getHibernateTemplate().load >Dp6@%
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(entity, id); S)'q:`tZo
} dnX`F5zd
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publicObject get(finalClass entity, q|
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finalSerializable id){ @'<j!CqQ
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return getHibernateTemplate().get h4B#T'b
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(entity, id); li_pM!dWU_
} eZ.0,A*1B1
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publicList findAll(finalClass entity){ dT,m{[+
return getHibernateTemplate().find("from ^cmP
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" + entity.getName()); HyX4ob[X
} _@~kYz
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publicList findByNamedQuery(finalString kG;\i
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namedQuery){ c7nk~K[6
return getHibernateTemplate n"d)
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().findByNamedQuery(namedQuery); w`#0
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} a@=36gx)
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publicList findByNamedQuery(finalString query, lRATrp#T
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finalObject parameter){ 7si*%><X
return getHibernateTemplate Uo[5V|>X6
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().findByNamedQuery(query, parameter); `1d`9AS2g
} 8.Own=G?
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publicList findByNamedQuery(finalString query, O->(9k <
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finalObject[] parameters){ #&2N,M!Q
return getHibernateTemplate <#x%A0
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().findByNamedQuery(query, parameters); `E0.P V
} #2vG_B<M)
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publicList find(finalString query){ g d}TTe
return getHibernateTemplate().find 9@z|2z2\G
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(query); DdS3<3]A
} gK#fuQ$hH
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publicList find(finalString query, finalObject ~S=fMv^BR
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parameter){ /'=^^%&:B