Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 _K"|}bM
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 /RD@ [ 8
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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 LV|ZZ.d h
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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 F:nhSd
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分页支持类: zUX%$N+w}>
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java代码: KwGk8$ U
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package com.javaeye.common.util; q =sEtH=
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import java.util.List; K;,zE6WD$$
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publicclass PaginationSupport { ;UuCSfs{
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publicfinalstaticint PAGESIZE = 30; htC~BK3(
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privateint pageSize = PAGESIZE; Bk,:a,
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privateList items; `-a](0QU
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privateint totalCount; /d; C)%$
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privateint[] indexes = newint[0]; J2A+x\{<
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privateint startIndex = 0; GJ YXCi
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public PaginationSupport(List items, int reo
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totalCount){ :`('lrq
setPageSize(PAGESIZE); MmUtBT
setTotalCount(totalCount); vv='.R, D
setItems(items); zN}1Qh
setStartIndex(0); A+3, y<j\
} 7&oT}Z
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public PaginationSupport(List items, int (
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totalCount, int startIndex){ /ZC/yGdIS_
setPageSize(PAGESIZE); -L%J,f[&,
setTotalCount(totalCount); qKoD*cl)Za
setItems(items); Uc
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setStartIndex(startIndex); "rhU2jT=c
} A4;EtW+F
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public PaginationSupport(List items, int R9=K/
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totalCount, int pageSize, int startIndex){ k?(x}IZdG
setPageSize(pageSize); yCznRd}J
setTotalCount(totalCount); )qXl8H I
setItems(items); ) 0p9I0=
setStartIndex(startIndex); h SGI
} VI83 3
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publicList getItems(){ mOiA}BGw
return items; Rb!|2h)
} 5:3%RTLG
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publicvoid setItems(List items){ 3FWl_d~uD
this.items = items; sEBZ-qql
} /u
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publicint getPageSize(){ TL^af-
return pageSize; ""AP-7
} Q[g>ee
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publicvoid setPageSize(int pageSize){ Po+I!TL'
this.pageSize = pageSize; y3!r;>2k=
} Fk&W*<}/;
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publicint getTotalCount(){ )=,%iL-
return totalCount; z4qw*. 5
} n*%o!=
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publicvoid setTotalCount(int totalCount){ |>w>}w`~
if(totalCount > 0){ +{b!,D3sa*
this.totalCount = totalCount; ;ZnSWIF2
int count = totalCount / |jh&a+4W
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pageSize; E0F8FR'
if(totalCount % pageSize > 0) P''5A6#5
count++; 2oY.MQD7iW
indexes = newint[count]; 4J #F;#iA
for(int i = 0; i < count; i++){ +y%"[6c|
indexes = pageSize * <d2?A}<
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} '.Ww*N
}else{ aQ@9(j>
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this.totalCount = 0; !_zp'V]?
} U)v['5%
} ~|W0+ &):
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publicint[] getIndexes(){ !Q-h#']~L
return indexes;
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} JCL+uEX4S
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publicvoid setIndexes(int[] indexes){ !v^{n+
this.indexes = indexes; U<T.o0s=
} N)F&c!anh
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publicint getStartIndex(){ "nkj_pC
return startIndex; Dt1v`T~=?
} ,'FH[2
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publicvoid setStartIndex(int startIndex){ G~$.Af!9W
if(totalCount <= 0) ejr9e@D^
this.startIndex = 0; uc0 1{t0,
elseif(startIndex >= totalCount) bfjC: "!H
this.startIndex = indexes s& INcjC
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[indexes.length - 1]; " Bz\<e&u
elseif(startIndex < 0) u%TZ),ny-
this.startIndex = 0; U;o$=,_p
else{ hW^*b:v{
this.startIndex = indexes ySfot`LQ
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[startIndex / pageSize]; .f1
} }OQaQf9V{
} U9?fUS
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publicint getNextIndex(){ tl:V8sYTP
int nextIndex = getStartIndex() + d|P,e;m-
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pageSize; 6Kl%|VrJs
if(nextIndex >= totalCount) we4k VAn
return getStartIndex(); !ucHLo3:
else ]xx}\k
return nextIndex; F&tU^(7<
} Dd: TFZo
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publicint getPreviousIndex(){ xz$-_NWW
int previousIndex = getStartIndex() - (-<s[VnXP
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pageSize; fX
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if(previousIndex < 0) .Yw
return0; \wJ2>Q
else iMT[sb
return previousIndex; ce3UB~Q
} d8)ps,
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} >yZe1CP
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抽象业务类 >)Udb//
java代码: 65% WjO
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/** D(E3{\*R
* Created on 2005-7-12 mp!S<m
*/ .S5%Qa [uW
package com.javaeye.common.business; ab}Kt($
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import java.io.Serializable; p\'0m0*
import java.util.List; 6UAn#d9
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import org.hibernate.Criteria; |w{}h6a
import org.hibernate.HibernateException; pmWt7 }
import org.hibernate.Session; y;\m1o2
import org.hibernate.criterion.DetachedCriteria; 1BjMVMH
import org.hibernate.criterion.Projections; tj'xjX
import Q!91uNL
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org.springframework.orm.hibernate3.HibernateCallback; s~z~9#G(6
import |Ix{JP"Lk
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org.springframework.orm.hibernate3.support.HibernateDaoS r_x|2 AoO
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upport; iBM;$0Y
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import com.javaeye.common.util.PaginationSupport; xg;o<y KF
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public abstract class AbstractManager extends nrF5^eZ#
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HibernateDaoSupport { QX`T-)T e
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privateboolean cacheQueries = false; hZ[(Ik]*Zd
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privateString queryCacheRegion; S"@/F-
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publicvoid setCacheQueries(boolean A_4.>g
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cacheQueries){ 8ofKj:W]
this.cacheQueries = cacheQueries; rjo1
} NT0im%
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publicvoid setQueryCacheRegion(String XkEJ_;:
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queryCacheRegion){ +%~/~1
this.queryCacheRegion = m-HL7&iG$
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queryCacheRegion; iW9o-W
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} +F4SU(T
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publicvoid save(finalObject entity){ F1q6
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getHibernateTemplate().save(entity); tkX?iqKQ
} obz|*1M?
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publicvoid persist(finalObject entity){ _C%:AFPP>
getHibernateTemplate().save(entity); E]0}&YG
} 9 WO|g[Y3
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publicvoid update(finalObject entity){ fEB&)mM
getHibernateTemplate().update(entity); "g%=FH3e
} ED;rp9(
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publicvoid delete(finalObject entity){ $`&zI