Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 $ #2<f 6
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根
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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 u86PTp+
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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 =&qH%S6
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分页支持类: 4VwMl)8ic
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java代码: b18f=<#
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package com.javaeye.common.util; P8|ANe1
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import java.util.List; 4
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publicclass PaginationSupport { _nEVmz!zg
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publicfinalstaticint PAGESIZE = 30; :FtV~^Z
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privateint pageSize = PAGESIZE; @TX@78fWz=
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privateList items; u%E8&T8,
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privateint totalCount; p@uHzu7
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privateint[] indexes = newint[0]; ?Tu=-ppw
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privateint startIndex = 0; " zD9R4\X.
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public PaginationSupport(List items, int \AA9
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totalCount){ _>kc:
setPageSize(PAGESIZE); g,M-[o=Fk
setTotalCount(totalCount); d;wq@e
setItems(items); js"5{w&
setStartIndex(0); )oz2V9X{
} b=pk;'-
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public PaginationSupport(List items, int |YyNqwP`,
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totalCount, int startIndex){ Ql l{;A
setPageSize(PAGESIZE); 5(hv|t/a
setTotalCount(totalCount); v1X[/\;U
setItems(items); T4"D&~3
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setStartIndex(startIndex); ztX$kX:_m
} ;v2eAe@7
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public PaginationSupport(List items, int $@71 w~y
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totalCount, int pageSize, int startIndex){ knph549
setPageSize(pageSize); N[Ei%I
setTotalCount(totalCount); US"g>WLwJ
setItems(items); OY:rcGc`t
setStartIndex(startIndex); BG?>)]6
} W|2| v?v
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publicList getItems(){ xP&7i'ag
return items; 0H^*VUyW/
} Q1x&Zm1v
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publicvoid setItems(List items){ Wkjp:`(-$r
this.items = items; .Wy'
} C~@m6K
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publicint getPageSize(){ H)gc"aRe;Y
return pageSize; 5|K[WvG@Co
} "G.X=,
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publicvoid setPageSize(int pageSize){ Cb+$|Kg/"b
this.pageSize = pageSize; .udLMS/_
} >c<xy>N
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publicint getTotalCount(){ g0U?`;n$
return totalCount; #G F.M,O/h
} 3e1-w$z&S
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publicvoid setTotalCount(int totalCount){ 43M.Hj]
if(totalCount > 0){ @P75f5p}<
this.totalCount = totalCount; HB'9&
int count = totalCount / I#O"<0
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pageSize; ]YFjz/f
if(totalCount % pageSize > 0) [R%*C9Y d
count++; 4W*o:Y!
indexes = newint[count]; K$/"I0YyI
for(int i = 0; i < count; i++){ Fb%?qaLmCv
indexes = pageSize * K|-m6!C!7
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} KRT&]2
}else{ @_-,Q5
this.totalCount = 0; >Jx=k"Kv+
} GF%/q :9
} uK"FopUJ4i
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publicint[] getIndexes(){ W4 d32+V
return indexes; `VO;\s$5j
} n9={D
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publicvoid setIndexes(int[] indexes){ YARL/V
this.indexes = indexes; t^YtP3`?b
} X 5
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publicint getStartIndex(){ #\Rxqh7
return startIndex; SF,:jpt`Z+
} X5[t6q!
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publicvoid setStartIndex(int startIndex){ 3Q=\W<Wu
if(totalCount <= 0) x}c
this.startIndex = 0; .-tR <{
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elseif(startIndex >= totalCount) g1[BrT,
this.startIndex = indexes -#T%*
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[indexes.length - 1]; zs
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elseif(startIndex < 0) (ub(0 h0j
this.startIndex = 0; Il&7n_ H
else{ i^.eX
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this.startIndex = indexes `Tyd1!~
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[startIndex / pageSize]; U{oM*[
} M NwY
} f7Nmvla[q
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publicint getNextIndex(){ e8xq`:4Y
int nextIndex = getStartIndex() + <%uEWb)
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pageSize; o(Z~J}l({
if(nextIndex >= totalCount) AkS16A
return getStartIndex(); 54>0Dv??H
else
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return nextIndex; 1aRTvaGo
} bs)wxU`Q*
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publicint getPreviousIndex(){ -sJD:G,%
int previousIndex = getStartIndex() - q&v~9~^}d
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pageSize; 8o%Vn'^t
if(previousIndex < 0) +)q ,4+K%}
return0; @#,/6s7?
else c8uw_6#r(D
return previousIndex; 1[Yl8W%pj
} :g63*d+/G
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} ANw1P{9*
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抽象业务类 MW rhVn{R
java代码: Y"8@\73(R
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/** o<!H/PN
* Created on 2005-7-12 T2w4D!
*/ t>}S@T{~T
package com.javaeye.common.business; )$E){(Aa
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import java.io.Serializable;
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import java.util.List; i:jXh9+
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import org.hibernate.Criteria; g*oX`K.
import org.hibernate.HibernateException; ig.Z,R3@r
import org.hibernate.Session; v;
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import org.hibernate.criterion.DetachedCriteria; &57~i=A
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import org.hibernate.criterion.Projections; uVU)LOx
import 7MrHu2rZ=
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org.springframework.orm.hibernate3.HibernateCallback; }9\6!GY0
import nN<,rN{:
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org.springframework.orm.hibernate3.support.HibernateDaoS =h-EN_[
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upport; !% W5@tN
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import com.javaeye.common.util.PaginationSupport; pIK:$eN!/
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public abstract class AbstractManager extends 1DcBF@3sWG
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HibernateDaoSupport { QEt"T7a[/
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privateboolean cacheQueries = false; >>KI_$V
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privateString queryCacheRegion;
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publicvoid setCacheQueries(boolean klQmo30i
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cacheQueries){ PV~D;
this.cacheQueries = cacheQueries; cb)7$S
} OjlX<y.
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publicvoid setQueryCacheRegion(String au50%sA~
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queryCacheRegion){ [#@lsI
this.queryCacheRegion = BXdk0
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queryCacheRegion; ~Oq
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} 7M~ /
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publicvoid save(finalObject entity){ AeEdqX)
getHibernateTemplate().save(entity); 71[?AmxV
} 2=K|kp5
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publicvoid persist(finalObject entity){ d]sqj\Q57
getHibernateTemplate().save(entity); -n|>U:
} AzJ;EtR
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publicvoid update(finalObject entity){ *l
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getHibernateTemplate().update(entity); \f4rA?+f
} 4bL *7bA
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publicvoid delete(finalObject entity){ uQ_C<ii"W
getHibernateTemplate().delete(entity); s&VsK#
} 8=Oym~
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publicObject load(finalClass entity, n!Y_SPg
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finalSerializable id){ g!_#$az3
return getHibernateTemplate().load cFq<x=S
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(entity, id); 3\P*"65
} Gf#l ^yr
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publicObject get(finalClass entity, pEcYfj3M
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finalSerializable id){ 7:LEf"vRZ
return getHibernateTemplate().get xP>cQEL ot
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(entity, id); sk9Ejaf6>
} (OE S~G
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publicList findAll(finalClass entity){ g9^\QYh!
return getHibernateTemplate().find("from lFtEQ '}
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" + entity.getName()); :atd_6
} Iv3O8GU
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publicList findByNamedQuery(finalString Ek `bPQ5
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namedQuery){ -7w}+iS
return getHibernateTemplate bl>W i@GL
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().findByNamedQuery(namedQuery); E-Xz
} 9[VYd '
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publicList findByNamedQuery(finalString query, iP9]b&
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finalObject parameter){ iT{4-j7|P4
return getHibernateTemplate `.JW_F)1
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().findByNamedQuery(query, parameter); H?;+C/-K`_
} dpS@:
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publicList findByNamedQuery(finalString query, M x,5
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finalObject[] parameters){ AKjobA#
return getHibernateTemplate rG~W=!bj
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().findByNamedQuery(query, parameters); 9c}C<s`M
} E<-W & a }
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publicList find(finalString query){ k]:`<`/I_
return getHibernateTemplate().find ".|8 (Y
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(query); lU
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} T7mT:z>:
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publicList find(finalString query, finalObject Gev\bQa
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parameter){ J&h59dm-
return getHibernateTemplate().find Xlug{ Uh
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(query, parameter); mz1m^p)~{
} a'Cny((
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public PaginationSupport findPageByCriteria dkEbP*yXg
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(final DetachedCriteria detachedCriteria){ g&p(XuN
return findPageByCriteria $~:ZzZO
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); l[5** ?#
} R&t2
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public PaginationSupport findPageByCriteria uy"i3xD6-
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(final DetachedCriteria detachedCriteria, finalint
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startIndex){ 4Yok,<
return findPageByCriteria dbEXlm
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(detachedCriteria, PaginationSupport.PAGESIZE, J| &aqY
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startIndex); xv$fw>
} @(=?x:j
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public PaginationSupport findPageByCriteria 3`SH-"{j%
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(final DetachedCriteria detachedCriteria, finalint W^[QEmyn
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pageSize, +K'YVB
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finalint startIndex){ r`FTiPD.C
return(PaginationSupport) K($+ILZ
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getHibernateTemplate().execute(new HibernateCallback(){ 6w3[PNd
publicObject doInHibernate 0# 1~'e
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(Session session)throws HibernateException { ^=-25%&^
Criteria criteria = n@kJ1ee'
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