Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 c_DB^M!h
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 !O%f)v?
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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 XQ|j5]
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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 >P]I&S-.
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分页支持类: ,2:L{8_L
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java代码: "b+3 &i|
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package com.javaeye.common.util; {&JurZ
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import java.util.List; ,R9f;BR
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publicclass PaginationSupport { y&O_Jyg<
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publicfinalstaticint PAGESIZE = 30; Zqe[2()
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privateint pageSize = PAGESIZE; ph$&f0A6Xc
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privateList items; |RbUmuj
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privateint totalCount; `\/Wa h}I
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privateint[] indexes = newint[0]; %/,Uk+3p
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privateint startIndex = 0; Se]t;7j
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public PaginationSupport(List items, int 14)kKWG
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totalCount){ -<VF6k<
setPageSize(PAGESIZE); ^/RM;`h0
setTotalCount(totalCount); \2VZkVO9
setItems(items); ?2bE=|
setStartIndex(0); ]a@v)aa-
} ]MH
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public PaginationSupport(List items, int o@V/37!
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totalCount, int startIndex){ q~A|R
setPageSize(PAGESIZE); uS+b* :
setTotalCount(totalCount); fqp7a1qQl
setItems(items); (V|q\XS
setStartIndex(startIndex); Yv`1ySR
} ]H@uuPT!
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public PaginationSupport(List items, int Q,LWZw~"
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totalCount, int pageSize, int startIndex){ &wWGZ~T
setPageSize(pageSize); XS~w_J#q
setTotalCount(totalCount); 9$w)_RX9W
setItems(items); ?9.? w-Q'
setStartIndex(startIndex); @X / =.
} IU"!oM ^
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publicList getItems(){ t"@|;uPAu
return items; uZ{xt6 f
} @RG3*3(
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publicvoid setItems(List items){ ri.|EmH2:D
this.items = items; KHC(MdZ
} K Qy\l+\gM
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publicint getPageSize(){ %4g4 C#
return pageSize; 4xC6#:8
} !P3tTL!*L
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publicvoid setPageSize(int pageSize){ ~#xs
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this.pageSize = pageSize; JL*]9$o
} (6_/n&mF
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publicint getTotalCount(){ |HIA[.q
return totalCount; <@2?2l+`X
} /? <9,7#i
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publicvoid setTotalCount(int totalCount){ 63\>MQcLy
if(totalCount > 0){ ,kuFTWB
this.totalCount = totalCount; HH7gT
int count = totalCount / cyn]>1ZM
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pageSize; 3uiitjA]
if(totalCount % pageSize > 0) p{_O*bo
count++; &5CeRx7%
indexes = newint[count]; ]$X=~>w
for(int i = 0; i < count; i++){ { l~T~3/i
indexes = pageSize * pc(9(. |
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} (>% Vj
}else{ )FiU1E
this.totalCount = 0; ku8Z;ONeH
}
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publicint[] getIndexes(){ l%V}'6T
return indexes; X>YOo~yS5
} ]-]@=qYu
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publicvoid setIndexes(int[] indexes){ 1>*<K/\qg
this.indexes = indexes; &?6~v
}
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publicint getStartIndex(){ Y{B_OoTun
return startIndex; CHSD8D
} 'Z%aBCM
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publicvoid setStartIndex(int startIndex){ ;:YjgZ:+Q]
if(totalCount <= 0) YXOD
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this.startIndex = 0;
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elseif(startIndex >= totalCount) %bETr"Xom
this.startIndex = indexes )%W2XvG
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[indexes.length - 1]; ~w%+y
elseif(startIndex < 0) w9}IM149
this.startIndex = 0; W..>Ny;'3
else{ Ji:@z%osr
this.startIndex = indexes B}bNl 7
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[startIndex / pageSize]; :Gk~FRA|
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publicint getNextIndex(){ >I;#BE3
int nextIndex = getStartIndex() + B_1u<00kg
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pageSize; "lya|;
if(nextIndex >= totalCount) ,S K6*tpI
return getStartIndex();
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else lJ2/xE ]
return nextIndex; S;kc{?
} h(K4AiGE
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publicint getPreviousIndex(){ DEuW' .o>
int previousIndex = getStartIndex() - m$j;FKz+|
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pageSize; e/%YruzS
if(previousIndex < 0) rx)Q]
return0; rkXSygb
else X0L{#U
return previousIndex; _)\,6| #
} 2o}FB\4^i
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}
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抽象业务类 7]53GGNO
java代码: 1@Gv`{v
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/** l;i
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* Created on 2005-7-12 cE?J]5#^
*/ n\,W:G9AR7
package com.javaeye.common.business; epe}^Pl
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import java.io.Serializable; (.)s =
import java.util.List; Nzt1JHRS
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import org.hibernate.Criteria; H%V[%
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import org.hibernate.HibernateException; YzVLa,[
import org.hibernate.Session; "[,XS`
import org.hibernate.criterion.DetachedCriteria; wVX0!y6
import org.hibernate.criterion.Projections; b?,y%D)'
import T9yW# .
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org.springframework.orm.hibernate3.HibernateCallback; "Y6mM_flq
import qlP=Y .H
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org.springframework.orm.hibernate3.support.HibernateDaoS kdq55zTc<6
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import com.javaeye.common.util.PaginationSupport; HF:PF"|3
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public abstract class AbstractManager extends wXnt3)e
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HibernateDaoSupport { _BV:i:z
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privateboolean cacheQueries = false; b6ddXM\Z
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privateString queryCacheRegion; -mF9Skj
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publicvoid setCacheQueries(boolean #</yX5!V
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cacheQueries){ &R]G)f#w%*
this.cacheQueries = cacheQueries; $qqusa}`K
} ([|M,P6e)U
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publicvoid setQueryCacheRegion(String O(VV-n7U
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queryCacheRegion){ ~F-,Q_|-
this.queryCacheRegion = ]cD!~nJ
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queryCacheRegion; D{mu2'q
} -Y6JU
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publicvoid save(finalObject entity){ \[BnAgsF
getHibernateTemplate().save(entity); E4Sp^,
} Hs9uDGWp
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publicvoid persist(finalObject entity){ Gu-Sv!4p
getHibernateTemplate().save(entity); !Kis,e
} DbDpdC;
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publicvoid update(finalObject entity){ [3s~Z8
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getHibernateTemplate().update(entity); oUqNA|l
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} ;AaF ;zPV
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publicvoid delete(finalObject entity){ )-mB^7uXGv
getHibernateTemplate().delete(entity); 8dv1#F|
} 1/ a,7Hl
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publicObject load(finalClass entity, q^s$4 q
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finalSerializable id){ nsPM`dz/
return getHibernateTemplate().load E4{8 $:q=
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(entity, id); Je/R'QP^8
} O;w';}At
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{
publicObject get(finalClass entity, <MYD`,$yu
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finalSerializable id){ b(yY.L=K
return getHibernateTemplate().get TM+7>a$
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(entity, id); 8WvT0q>]
} @!S5FOXipZ
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publicList findAll(finalClass entity){ '&`Zy pq
return getHibernateTemplate().find("from K
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} bV"0}|A~K
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publicList findByNamedQuery(finalString =hA/;
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namedQuery){ ^71sIf;+
return getHibernateTemplate qU"+0t4
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().findByNamedQuery(namedQuery); 76
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} M8h9i2
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publicList findByNamedQuery(finalString query, *ce h
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finalObject parameter){ 51~:t[N|
return getHibernateTemplate H*Yyo?
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