Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 7+P-MT
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 {XLRrU!*
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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 d s}E|Q
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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 )79F"ltzh
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分页支持类: 4/&.N]
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java代码: `Fb%vYf
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package com.javaeye.common.util; K- TLzoYA
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import java.util.List; fvoPV&:
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publicclass PaginationSupport { snny!
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publicfinalstaticint PAGESIZE = 30; F^7qr
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privateint pageSize = PAGESIZE; G}'\
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privateList items; ]Q{MF- EKj
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privateint totalCount; F2$?[1^f
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privateint[] indexes = newint[0]; ?#u_x4==e
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privateint startIndex = 0; H`jvT]
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public PaginationSupport(List items, int >]?!9@#IH
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totalCount){ ]hY4
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setPageSize(PAGESIZE); IjRUL/\=
setTotalCount(totalCount); VOrBNu
setItems(items); }9Awv#+
setStartIndex(0); j$khGR!
} 3x
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public PaginationSupport(List items, int *6]_ 6xO
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totalCount, int startIndex){ uSNlI78D
setPageSize(PAGESIZE); 8Y~\:3&1<
setTotalCount(totalCount); ~G8haN4
setItems(items); *En4~;l
setStartIndex(startIndex); I<$m%
} Dmn{ppfyb
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public PaginationSupport(List items, int e `IL7$
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totalCount, int pageSize, int startIndex){ ;C+
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setPageSize(pageSize); 4 _Idf
setTotalCount(totalCount); 6Zq7O\
setItems(items); | <- t
setStartIndex(startIndex); biAa&
} 6i*LP(n
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publicList getItems(){ 3aEO9v,n
return items; QZ_8r#2x
} l AZBlO
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publicvoid setItems(List items){ )|L#i2?:
this.items = items; Xa&0j&AH
} 604^~6
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publicint getPageSize(){ !R1OSVFp
return pageSize; ddvtBAX
} rJc=&'{&)N
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publicvoid setPageSize(int pageSize){ hbTJXP~~?
this.pageSize = pageSize; fBct%M 3
} _l&.<nz
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publicint getTotalCount(){ z]=jer
return totalCount; =}YaV@g<f
} &,iPI2`O A
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publicvoid setTotalCount(int totalCount){ !v]~ut !p
if(totalCount > 0){ bODyJ7=[
this.totalCount = totalCount; 3Cl&1K #5
int count = totalCount / 420yaw/":
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pageSize; r[ RO"Ej"
if(totalCount % pageSize > 0) U7d05y'
count++; 2B=+p83<
indexes = newint[count]; ,:?=j80m
for(int i = 0; i < count; i++){ jI,?*n<
indexes = pageSize * %1%@L7wP>
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} c:_dW;MJ0
}else{ ;F\sMf{
this.totalCount = 0; Pxe7 \e
} LkUi^1((e
} qwHP8GU
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publicint[] getIndexes(){ 'V(9ein^Q
return indexes; xs$-^FnD
} 5q{
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publicvoid setIndexes(int[] indexes){ uZ(,7>0
this.indexes = indexes; t-$Hti7Lk
} lhduK4u
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publicint getStartIndex(){ IyGW>g6_.
return startIndex; khfWU
} oD~q/04!
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publicvoid setStartIndex(int startIndex){ ' |
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if(totalCount <= 0) (c1Kg
this.startIndex = 0; I8{ohFFo
elseif(startIndex >= totalCount) |NXe{q7{
this.startIndex = indexes ='\E+*[$I
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[indexes.length - 1]; *|&&3&7
elseif(startIndex < 0) o9AwW
this.startIndex = 0; ~MLBO
else{ x @uowx_&m
this.startIndex = indexes ?4MZT5 .
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[startIndex / pageSize]; HWi: CDgm
} Dh B*k<S
} #tlhH\Pr[
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publicint getNextIndex(){ }X^CH2,R
int nextIndex = getStartIndex() + O(YvE
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pageSize; @RFJe$%
if(nextIndex >= totalCount) u13v@<HGc
return getStartIndex(); _$BH.I
else Ej/P:nB
return nextIndex; *K2fp=Ns
} Bu,VLIba
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publicint getPreviousIndex(){ jK-usn
int previousIndex = getStartIndex() - @sLB
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pageSize; ]:F?k#c
if(previousIndex < 0) \4roM1&[
return0; u^]Z{K_B
else I=}pT50~9
return previousIndex;
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} )5U2-g#U
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} o&U/e\zy
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抽象业务类 <;':'sW
java代码: NM&R\GI
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/** W#lt_2!j
* Created on 2005-7-12 fW8whN
*/ <-Q0s%mNj,
package com.javaeye.common.business; [gxH,=Pb
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import java.io.Serializable; jv'q:uA ^
import java.util.List; %E`=c]!
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import org.hibernate.Criteria; |!.VpN&
import org.hibernate.HibernateException; bx=9XZ9g
import org.hibernate.Session;
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import org.hibernate.criterion.DetachedCriteria; /[#5<;
import org.hibernate.criterion.Projections; D./3,z
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org.springframework.orm.hibernate3.HibernateCallback; BewJ!,A!
import k#pNk7;MZ
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org.springframework.orm.hibernate3.support.HibernateDaoS <J.-fZS%
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upport; $ J)2E g
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import com.javaeye.common.util.PaginationSupport; 0rj50$~$]
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public abstract class AbstractManager extends RoeLf Ow
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HibernateDaoSupport { ( t59SY
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privateboolean cacheQueries = false; p| o?nI
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privateString queryCacheRegion; Vf] ;hm
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publicvoid setCacheQueries(boolean qhqqCVrsW
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cacheQueries){ D!nx %%q
this.cacheQueries = cacheQueries; JWo).
} \2NT7^H#
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publicvoid setQueryCacheRegion(String 19 <Lgr
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queryCacheRegion){ eL{6;.C
this.queryCacheRegion = LQ3J$N
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queryCacheRegion; dId&tTMmC
} J!@`tR-
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publicvoid save(finalObject entity){ ~Op~~
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getHibernateTemplate().save(entity); |]'0z0>
} C}8 3t~Q
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publicvoid persist(finalObject entity){ gtlyQ
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getHibernateTemplate().save(entity); ?)L X4GY
} pA?2UZ
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publicvoid update(finalObject entity){ RI#o9d"x}
getHibernateTemplate().update(entity); t'im\_$F
} d+Au`'{>
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publicvoid delete(finalObject entity){ :Wl`8p4]
getHibernateTemplate().delete(entity); rw]7Lr_>
} ;/=6~%
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publicObject load(finalClass entity, v JPX`T|
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finalSerializable id){ a?P$8NLr
return getHibernateTemplate().load Ze- MB0w
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(entity, id); XVWVY}
} YMD&U
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publicObject get(finalClass entity, [|{m/`8C
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finalSerializable id){ =%ZR0cWPoI
return getHibernateTemplate().get 9G=HG={
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(entity, id); b5.L== >
} F
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publicList findAll(finalClass entity){ .BjnV%l7Id
return getHibernateTemplate().find("from 1J @43>u{
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" + entity.getName()); kQQhZ8Ch
} /Vy,6:$H3
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publicList findByNamedQuery(finalString WSV[)-=:
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namedQuery){ iyr'9BA
return getHibernateTemplate Sxg&73;ZV
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().findByNamedQuery(namedQuery); qS}pv
} )3A%Un#B
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publicList findByNamedQuery(finalString query, VH2/
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finalObject parameter){ L$4nbOu\~
return getHibernateTemplate \bzT=^Z;2
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().findByNamedQuery(query, parameter); 5B,HJax
} [>wvVv
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publicList findByNamedQuery(finalString query, )*I%rN8b
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finalObject[] parameters){ HC\\w-`<
return getHibernateTemplate k}$k6Sr"
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().findByNamedQuery(query, parameters); nk^-+olm
} bdz&"\$X
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publicList find(finalString query){ #uHl
return getHibernateTemplate().find c`x[C
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(query); 4,P!D3SH
} StWF66u34&
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publicList find(finalString query, finalObject Hg%8Q@
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parameter){ c3G&)gU4q
return getHibernateTemplate().find ?2$0aq
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(query, parameter); KuohUH+
} SdOE^_@:
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public PaginationSupport findPageByCriteria c0M>CaKD
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(final DetachedCriteria detachedCriteria){ _E<