Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 L4`bGZl55
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 a@ `1 5O:
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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 K=Z~$)Og)
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 ^$qr6+
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分页支持类: e3w4@V`
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java代码: t"M&Yy
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package com.javaeye.common.util; Cj31>k1
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import java.util.List; G)5w_^&%
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publicclass PaginationSupport { GJz d4kj
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publicfinalstaticint PAGESIZE = 30; B:S/
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privateint pageSize = PAGESIZE; OAPR wOQ^=
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privateList items; V`xZ4 i%L
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privateint totalCount; n'R9SnW
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privateint[] indexes = newint[0]; ,!+>/RlJ
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privateint startIndex = 0; ~EJVlji
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public PaginationSupport(List items, int !G E-5 \*
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totalCount){ zf-)c1$*r
setPageSize(PAGESIZE); gyi<ot;
setTotalCount(totalCount); _kUf[&
setItems(items); d`]|i:*q
setStartIndex(0); 2eErvfC[
} ]q@/:I9]
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public PaginationSupport(List items, int y<r7_ysi
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totalCount, int startIndex){ d*3;6ZLy
setPageSize(PAGESIZE); ZL[~[
setTotalCount(totalCount); mlC_E)Ed5
setItems(items); W,&z:z>
setStartIndex(startIndex); m(Ghe2T:
} Cv7FVl-I
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public PaginationSupport(List items, int 4+&4
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totalCount, int pageSize, int startIndex){ H9nVtS{x
setPageSize(pageSize); s}Y_og_c
setTotalCount(totalCount); .)Xyzd
setItems(items); E}eu]2=nU}
setStartIndex(startIndex); S[p.`<{J
} t(3<w)r2
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publicList getItems(){ pqmb&"l
return items; EHpIbj;n
} Y r3h=XY
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publicvoid setItems(List items){ 72rnMHq
this.items = items; xj6ht/qq
} 'iy &%?
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publicint getPageSize(){ gG"W~O)yv
return pageSize; 4wp5ghe
} vLQ!kB^\W
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publicvoid setPageSize(int pageSize){ yZ7aH|Q81B
this.pageSize = pageSize; _@U?;73"5
} ]Tmx;[D
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publicint getTotalCount(){ y&8' V\
return totalCount; Rou$`<{H
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publicvoid setTotalCount(int totalCount){ .iK{=L/(y
if(totalCount > 0){ QLNQE 6-
this.totalCount = totalCount; Pl|e?Np
int count = totalCount / ;O7CahdF
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pageSize; qRXQL"Pe_l
if(totalCount % pageSize > 0) l :sZ
count++; Z}#,E;
indexes = newint[count]; Q-<,+[/
for(int i = 0; i < count; i++){ s)_Xj`Q#
indexes = pageSize * V}?d
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}else{ xw?Mc{w
this.totalCount = 0;
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} QwaCaYoh
} o`B,Pt5vu
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publicint[] getIndexes(){ r{DR$jD
return indexes; S $wx>715
} N>,`l
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publicvoid setIndexes(int[] indexes){ c%2C\UB
this.indexes = indexes; ]Z/<HP$#
} {(mT,}`4
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publicint getStartIndex(){
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return startIndex; oU }eAZj{
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publicvoid setStartIndex(int startIndex){ /I[?TsXp
if(totalCount <= 0) h-0sDt pR
this.startIndex = 0; 'FB?#C %U
elseif(startIndex >= totalCount) 6=V&3|"
this.startIndex = indexes FD?!bI4
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[indexes.length - 1]; VCOz?Y*
elseif(startIndex < 0) {d`e9^Z:
this.startIndex = 0; S+c)
else{ DDdMWH^o7
this.startIndex = indexes J%|!KQl
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[startIndex / pageSize]; S\7-u\)
} PoyY}Ra
} "PA:
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publicint getNextIndex(){ |eD$eZ=m
int nextIndex = getStartIndex() + U68o"iE
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if(nextIndex >= totalCount) H,r> @Y
return getStartIndex(); f.?p"~!
else N?!]^jI,
return nextIndex; j^DoILw
} %'2DEt??
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publicint getPreviousIndex(){ \x JGR!
int previousIndex = getStartIndex() - <0my,hAK
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if(previousIndex < 0) )6?(K"T
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else ImJ2tz6
return previousIndex; u&)+~X
} (n'Mf
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} FJ}RT*7_C
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抽象业务类 \B _g=K
java代码: %T:~N<8)
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/** %E q}H
* Created on 2005-7-12 c"X` OB
*/ Ktrqrl^IJ
package com.javaeye.common.business; RhVQVj c
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import java.io.Serializable; ve|:z
import java.util.List; _jmkA meu
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import org.hibernate.Criteria; zyNg?_SM
import org.hibernate.HibernateException; N*.JQvbnr
import org.hibernate.Session; c}9.Or`?
import org.hibernate.criterion.DetachedCriteria; n(-1vN
import org.hibernate.criterion.Projections; UEeD Nl$^u
import ?`PG`|2~
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org.springframework.orm.hibernate3.HibernateCallback;
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import YEGRM$'`
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org.springframework.orm.hibernate3.support.HibernateDaoS C[h"w'A2
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upport; ~m~<xtoc
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import com.javaeye.common.util.PaginationSupport; \(9hg.E
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public abstract class AbstractManager extends #K1VPezN
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HibernateDaoSupport { Ps3wg=ni[
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privateboolean cacheQueries = false; :BLD&mb"Y
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privateString queryCacheRegion; E?>
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publicvoid setCacheQueries(boolean Gni<@;}
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cacheQueries){ Y#3<w
this.cacheQueries = cacheQueries; E0XfM B]+
} D+Osz
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publicvoid setQueryCacheRegion(String BD6oN]
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queryCacheRegion){ M*|,05>
this.queryCacheRegion = OQt_nb#z`{
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queryCacheRegion; {j%'EJ5
} Y<lJj"G
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publicvoid save(finalObject entity){ Bi7QYi/
getHibernateTemplate().save(entity); '8+<^%c
} 1-`Il]@?8
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publicvoid persist(finalObject entity){ o+e:HjZZ
getHibernateTemplate().save(entity); &S/@i|_
} ?kfLOJQ:I
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publicvoid update(finalObject entity){ F91'5D,u0
getHibernateTemplate().update(entity); }Gmwm|`*
} |E/r64T
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publicvoid delete(finalObject entity){ #*QnO\.
getHibernateTemplate().delete(entity); BeAkG_uG
} [=dK%7v
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publicObject load(finalClass entity, CAX)AN
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finalSerializable id){ 9V5}%4k%+
return getHibernateTemplate().load kk6Af\NZ
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(entity, id); iT f]Pd'
} Ae,P&(
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publicObject get(finalClass entity, =+{SZh@
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finalSerializable id){ O,m0Xb2s]~
return getHibernateTemplate().get i,5mH$a&u:
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(entity, id); <