Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 H,;9' *84
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 wLKC6@
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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 U]"6KS
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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 dC?l%,W
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分页支持类: R]N"P:wf@
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java代码: 4R&pb1eF
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package com.javaeye.common.util; i([|@Y=
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import java.util.List; %8lWJwb7u
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publicclass PaginationSupport { QxiAC>%K
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publicfinalstaticint PAGESIZE = 30; \N.Bx
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privateint pageSize = PAGESIZE; C:RA(
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privateList items; :U6Q==B$_
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privateint totalCount; >(Fy6m
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privateint[] indexes = newint[0];
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privateint startIndex = 0; {
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public PaginationSupport(List items, int V BjA$.
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totalCount){ ),I g u
setPageSize(PAGESIZE); q}hHoSG]=
setTotalCount(totalCount); JxlZ,FF$@
setItems(items); lz(}N7SLa
setStartIndex(0); zZiga q"
} ,j%feC3
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public PaginationSupport(List items, int :)kWQQ+,
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totalCount, int startIndex){ t{O2JF#5u
setPageSize(PAGESIZE); -fD W>]_
setTotalCount(totalCount); <,Fj}T-
setItems(items); !gj_9"<
setStartIndex(startIndex); QVe<Z A8N;
} d>Ky(wS
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public PaginationSupport(List items, int +,J!xy+~,
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totalCount, int pageSize, int startIndex){ Oox,4&
setPageSize(pageSize); Duq.`XO
setTotalCount(totalCount); $;j{?dvm.
setItems(items); TTo5"r9I8
setStartIndex(startIndex); [ip}f4K
} TchByN6oN<
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publicList getItems(){ %]!xr6d
return items; #X*=oG
} Go PK. E$
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publicvoid setItems(List items){ G,XUMZ
this.items = items; }XfRKGQw
} Fr1OzS^&(
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publicint getPageSize(){ .}3K9.hkr
return pageSize; z/|tsVK
} 43N=OFU
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publicvoid setPageSize(int pageSize){ >7 qZ\#
this.pageSize = pageSize; p&ZLd`[
} H'x_}y
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publicint getTotalCount(){ j4E`O%@^
return totalCount; #XeabcOQ
} x_#'6H\1ga
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publicvoid setTotalCount(int totalCount){ +6f[<^K#
if(totalCount > 0){ I1!m;5-c9k
this.totalCount = totalCount; WR}<^ax
int count = totalCount / sF1j4 NC
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pageSize; >0I\w$L
if(totalCount % pageSize > 0) K b
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count++; xN44>3#
indexes = newint[count]; =5#sB*
for(int i = 0; i < count; i++){ 94L>%{59
indexes = pageSize * mxl"Y&l2<
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} (BY5omlh
}else{ pt~b=+bBm
this.totalCount = 0; ]Yt,|CPe2
} N|asr,
} 'E %+ O
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publicint[] getIndexes(){ DTCOhUIV
return indexes; m]/sR3yF
} M(<.f}yZQ
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publicvoid setIndexes(int[] indexes){ hmJa1fw=
this.indexes = indexes; _yc&'Wq
} ?9;r|G
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publicint getStartIndex(){ [u7i)fn5?
return startIndex; AI2@VvB
} Kl w9
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publicvoid setStartIndex(int startIndex){
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if(totalCount <= 0) m]'P3^<{P
this.startIndex = 0; n!%'%%o2v
elseif(startIndex >= totalCount) X!f` !tZ:{
this.startIndex = indexes 9oxn-)6JC
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[indexes.length - 1]; Vnnl~|Xx
elseif(startIndex < 0) O
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this.startIndex = 0; w>6cc#>q
else{ q 1+{MPJ
this.startIndex = indexes 4_h?E:sBb
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[startIndex / pageSize]; X>ck.}F
} '%[r 9w
} EGK7)O'W
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publicint getNextIndex(){ fi';Mb3B3
int nextIndex = getStartIndex() + Pe?b#
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pageSize; 0-Vx!(
if(nextIndex >= totalCount) !Bn,f2
return getStartIndex(); y/!jC]!+c
else #>O>=#Q
return nextIndex; &\AW}xp
} ZUaqv
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publicint getPreviousIndex(){ %lS jC%Z'd
int previousIndex = getStartIndex() - S/x CX!
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pageSize; b1-'q^M
if(previousIndex < 0) )H-y
return0; nx@h
else p]J0A ^VV
return previousIndex; ?eri6D,86w
} Iz[wrtDI1
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} O@sJ#i>
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抽象业务类
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java代码: "UTAh6[3oD
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/** n_Bi HMIU'
* Created on 2005-7-12 MUvgmJsN
*/ zOA2chy4
package com.javaeye.common.business; C}(9SASs%
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import java.io.Serializable; e~NF}9#A
import java.util.List; L~e{Vv8UR
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import org.hibernate.Criteria; W4n(6esO
import org.hibernate.HibernateException; L3y`*&e>
import org.hibernate.Session; XcM.<Dn3
import org.hibernate.criterion.DetachedCriteria; C^nTLw;K
import org.hibernate.criterion.Projections; %2<u>=6byG
import SX@zDuM
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org.springframework.orm.hibernate3.HibernateCallback; ~=Q Tv8
import }+i~JK
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org.springframework.orm.hibernate3.support.HibernateDaoS *#Hw6N0#
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upport; Pm!/#PtX
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import com.javaeye.common.util.PaginationSupport; [?nM)4d
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public abstract class AbstractManager extends =SLCG.
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HibernateDaoSupport { Kld#C51X f
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privateboolean cacheQueries = false; Kzrt%DA
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privateString queryCacheRegion; x$=""?dd
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publicvoid setCacheQueries(boolean IJv+si:k
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cacheQueries){ -1c{Jo
this.cacheQueries = cacheQueries; hvOl9W>
} I#9q^,,F
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publicvoid setQueryCacheRegion(String dI)
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queryCacheRegion){ \2VYDBi?|
this.queryCacheRegion = &AhkP=Yw
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queryCacheRegion; qotWWe#
} $W0O
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publicvoid save(finalObject entity){ y$U(oIU>
getHibernateTemplate().save(entity); ?"L ^0%
} `F4gal^ ^
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publicvoid persist(finalObject entity){ 9jW"83*5
getHibernateTemplate().save(entity); #0'%51Jcl
} g~]?6;uu
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publicvoid update(finalObject entity){ go
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getHibernateTemplate().update(entity); u @#fOu
} xDEjeM G
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publicvoid delete(finalObject entity){ @tg4rl
getHibernateTemplate().delete(entity); <T+{)FV
}
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publicObject load(finalClass entity, _FtsO<p)"
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finalSerializable id){ 6gTc)rhRT
return getHibernateTemplate().load OS sYmF
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(entity, id); eq,`T;
} O8)N`#1>+
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publicObject get(finalClass entity, qUKSo9
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finalSerializable id){ ~NG+DyGa=
return getHibernateTemplate().get ^j]_MiA4
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(entity, id); B\Uocn
} lL"ANlX-P
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publicList findAll(finalClass entity){ hD9b2KZv
return getHibernateTemplate().find("from SaSj9\o
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" + entity.getName()); (0u(<qA\
} )>I-j$%=2
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publicList findByNamedQuery(finalString Hp5.jor(k
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namedQuery){ @^Yr=d ba
return getHibernateTemplate 5%RiM|+
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().findByNamedQuery(namedQuery); 5]~451
} oMHTB!A=2
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publicList findByNamedQuery(finalString query, {3!E8~
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finalObject parameter){ '^%k TNn
return getHibernateTemplate cV:Ak~PKl
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().findByNamedQuery(query, parameter); MIdViS.g
} D";@)\jN
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publicList findByNamedQuery(finalString query, ~DP_1V?
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finalObject[] parameters){ fs0EbVDF
return getHibernateTemplate %jn)=;\
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().findByNamedQuery(query, parameters); #jM-XK
} odW K\e
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publicList find(finalString query){ Z7p!YTA
return getHibernateTemplate().find 8\Bb7*
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(query); q![`3m-d.
} '
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publicList find(finalString query, finalObject vn4z C
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parameter){ uR6 `@F
return getHibernateTemplate().find "/Pq/\,R|
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(query, parameter); ym_p49
} tmi)LRF
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public PaginationSupport findPageByCriteria iF
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(final DetachedCriteria detachedCriteria){ Ug\$Ob5=q
return findPageByCriteria XIn,nCY;
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); !cW!zP-B*p
} p0hE`!
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public PaginationSupport findPageByCriteria iFnD`l6)
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(final DetachedCriteria detachedCriteria, finalint quRTA"!E
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startIndex){ nF$HWp>
return findPageByCriteria rFaG-R
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(detachedCriteria, PaginationSupport.PAGESIZE, 2'u%
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startIndex); LVT:oIQ
} 0o!mlaU#
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public PaginationSupport findPageByCriteria 3S"
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(final DetachedCriteria detachedCriteria, finalint c(aykIVOo
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pageSize, yK-DzAv
finalint startIndex){ &x7iEbRs
return(PaginationSupport) F^81?Fi.
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getHibernateTemplate().execute(new HibernateCallback(){ w[C*w\A\M
publicObject doInHibernate
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(Session session)throws HibernateException { DLuaM?7
Criteria criteria = dz!m8D0
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detachedCriteria.getExecutableCriteria(session);
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int totalCount = SP/'4m
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