Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ,MD>Jx|
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 UQjZhH
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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 b =:%*gq,
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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 MA v-#
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分页支持类: Ev&aD
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java代码: C3; d.KlV
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package com.javaeye.common.util; S|_lbMZM
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import java.util.List; X&,a=#C^
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publicclass PaginationSupport { Chtls;Ph[
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publicfinalstaticint PAGESIZE = 30; NaeG)u#+
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privateint pageSize = PAGESIZE; jDW$}^
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privateList items; S#|5&SR
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privateint totalCount; 'zQp64]F
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privateint[] indexes = newint[0]; ?gS~9jgcd
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privateint startIndex = 0; CePI{`&,
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public PaginationSupport(List items, int }do=lm?/
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totalCount){ E D_J8+
setPageSize(PAGESIZE); )eBCO~HS
setTotalCount(totalCount); J8hH#7WMS
setItems(items); 1@Rl^ey
setStartIndex(0); =z2g}X
} =UFmN"
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public PaginationSupport(List items, int AHTQF#U^
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totalCount, int startIndex){ PJ'@! jx
setPageSize(PAGESIZE); '>UQsAvm
setTotalCount(totalCount); PL7_j
setItems(items); )7iYx {n
setStartIndex(startIndex); @.KFWAm
} .p\<niu7
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public PaginationSupport(List items, int )n$RHt+:>
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totalCount, int pageSize, int startIndex){ .4,l0Nn`W
setPageSize(pageSize); 3d>xg%?
setTotalCount(totalCount); Vxim$'x!
setItems(items); M"z3F!-j
setStartIndex(startIndex);
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} *AI?md
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publicList getItems(){ QCvst*
return items; =p$:vW
} p}k\l dmh{
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publicvoid setItems(List items){ <>[]-Vq
this.items = items; (1;%V>,L
} mV'^4by
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publicint getPageSize(){ #jX%nqMxW
return pageSize; LF_am*F
} N`!=z++G
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publicvoid setPageSize(int pageSize){ "\x\P)j0>
this.pageSize = pageSize; 2]-xmS>|b
} Z$ Mc{
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publicint getTotalCount(){ 9rQw~B<S
return totalCount;
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} e{`DvfY21
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publicvoid setTotalCount(int totalCount){ C-L[" O0[
if(totalCount > 0){ F7qQrE5bl
this.totalCount = totalCount; sBWLgJz?C
int count = totalCount / N^By#Z
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pageSize; #wZBWTj.
if(totalCount % pageSize > 0) J l9w/T
count++; p+|(lrYC
indexes = newint[count]; jRo4+8
for(int i = 0; i < count; i++){ xouy|Nn'
indexes = pageSize * <LOas$
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} naWW i]9
}else{ zrCQEQq
this.totalCount = 0; gAViwy9{
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} %^66(n)
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publicint[] getIndexes(){ {,b:f
return indexes; ;l2pdP4jf
} pbb6?R,
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publicvoid setIndexes(int[] indexes){ \H$j["3
this.indexes = indexes; %4HpTx
} V/i7Z h#2:
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publicint getStartIndex(){ vaUUesytt
return startIndex; ]{'lV~fc
} E7UYJ)6]
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publicvoid setStartIndex(int startIndex){ @+
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if(totalCount <= 0) yW)X
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this.startIndex = 0; L
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elseif(startIndex >= totalCount) gay6dj^
this.startIndex = indexes >\c"U1%E
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[indexes.length - 1]; 6 N.+
elseif(startIndex < 0) ti^msC8e
this.startIndex = 0; \LZVazXD
else{ ^zVBS7`J
this.startIndex = indexes ]
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[startIndex / pageSize]; L;s,x V
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} $6p|}<u
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publicint getNextIndex(){ KF4}cM=.5
int nextIndex = getStartIndex() +
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pageSize; ykbTWp$Y4Z
if(nextIndex >= totalCount) Mee+bp
return getStartIndex(); >rb8A6
else 2pQdDbm
return nextIndex; C [h^bBq
} W6[# q%o
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publicint getPreviousIndex(){ V[N4 {c
int previousIndex = getStartIndex() - V}UYr Va#9
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pageSize; />\6_kT
if(previousIndex < 0) K<Qy1y~[
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else
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return previousIndex; El)WjcmH
} Us*"g{PQ
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} qkbxa?&X
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抽象业务类 zgh~P^Z
java代码: K9(Su`zr
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/** f~NGIlgR
* Created on 2005-7-12 YZH&KGY
*/ D-IXO@x
package com.javaeye.common.business; BE]PM
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import java.io.Serializable; #^ cmh
import java.util.List; ~qxuD_
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import org.hibernate.Criteria; +Y
import org.hibernate.HibernateException; UF ]g6u
import org.hibernate.Session; a9 CK4Kg
import org.hibernate.criterion.DetachedCriteria; P<<hg3@
import org.hibernate.criterion.Projections; NlnmeTLO5
import >X"V
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org.springframework.orm.hibernate3.HibernateCallback; V!94I2%#x
import 4dwG6-
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org.springframework.orm.hibernate3.support.HibernateDaoS Os# V=P
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upport; 'U"ub2j
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import com.javaeye.common.util.PaginationSupport; gZD,#D.hR
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public abstract class AbstractManager extends RC| t-(Z
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HibernateDaoSupport { -Ob89Z?2A
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privateboolean cacheQueries = false; BbqH02i
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privateString queryCacheRegion; j>70AE3[8
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publicvoid setCacheQueries(boolean tb@&!a$`?
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cacheQueries){ lrXi*u]
this.cacheQueries = cacheQueries; UFoxv)
} _Bh ^<D-
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publicvoid setQueryCacheRegion(String *75?%l
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queryCacheRegion){ n
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this.queryCacheRegion = ]"Qm25`Qz
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queryCacheRegion; k}yUD 0Y
} uS%Y$v
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publicvoid save(finalObject entity){ -`o22G3w
getHibernateTemplate().save(entity); 8=#J:LeXj
} w9J^s<e
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publicvoid persist(finalObject entity){ 85Hb~|0
getHibernateTemplate().save(entity); ;P{HePs=)
} _26~<gU8
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publicvoid update(finalObject entity){ /5y*ZIq]e
getHibernateTemplate().update(entity); ]^63n/Twj
} 2sOV3~bB
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publicvoid delete(finalObject entity){ uNV\_'9>Y
getHibernateTemplate().delete(entity); p+;[i%`
} QlHxdRK`.
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publicObject load(finalClass entity, RU1+-
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finalSerializable id){ 'NJCU.lKm
return getHibernateTemplate().load _FET$$>z N
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(entity, id); Q[+o\{ O
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publicObject get(finalClass entity, ,c%>M^d
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finalSerializable id){ w1je|Oil
return getHibernateTemplate().get Zljj
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(entity, id); =vv4;az
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} y3 R+060\3
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publicList findAll(finalClass entity){ 0t-!6
return getHibernateTemplate().find("from @@,l0/
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} PN!NB.
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publicList findByNamedQuery(finalString ="$9
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namedQuery){ }K!)Z}8
return getHibernateTemplate b-1cA1#_cP
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().findByNamedQuery(namedQuery); `|1#Vuk
} |g3a1El
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publicList findByNamedQuery(finalString query, P+m{hn~%
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finalObject parameter){ &gn^i!%Z)
return getHibernateTemplate ~f[AEE~,s+
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().findByNamedQuery(query, parameter); ,<[Q/:}[
} s/,wyxKd
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publicList findByNamedQuery(finalString query, 4v"9I(
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finalObject[] parameters){ poqcoSL"}
return getHibernateTemplate &ggS!y'n
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().findByNamedQuery(query, parameters); z*cC2+R}=
} p*T`fOL
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publicList find(finalString query){ W?5u O
return getHibernateTemplate().find N{}XHA
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(query); #|\NG
} nV|H5i;N7
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publicList find(finalString query, finalObject NArql
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parameter){ IpX>G]"-C
return getHibernateTemplate().find ^6*2a(S&
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(query, parameter); 0]C~CvO
} O<&8gk~
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public PaginationSupport findPageByCriteria *CHLs^)
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(final DetachedCriteria detachedCriteria){ yw|O,V<4N
return findPageByCriteria 3x=f}SO&
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); jt?937{
} pXfg{2
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public PaginationSupport findPageByCriteria [xF (t @p
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(final DetachedCriteria detachedCriteria, finalint }1A Brbc
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startIndex){ b<