Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 JY+ N+c\
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 wgK:^DP
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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 Sc!{
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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?mQ\O8F
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分页支持类:
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java代码: 1N#KVvK
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package com.javaeye.common.util; A8?uCkG
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import java.util.List; %<|w:z$vp
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publicclass PaginationSupport { YxEc(a"
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publicfinalstaticint PAGESIZE = 30; < sJ
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privateint pageSize = PAGESIZE; Tl.dr
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privateList items; }n+#o!uEf
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privateint totalCount; !2)$lM1@J
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privateint[] indexes = newint[0]; Iv6(Z>pAB
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privateint startIndex = 0; ,)u\G(N
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public PaginationSupport(List items, int 1 m)WM,L
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totalCount){ z\zmAus
setPageSize(PAGESIZE); "XWrd[Df
setTotalCount(totalCount); sLGut7@Sg
setItems(items); K&zp2V
setStartIndex(0); /8\gT(@
} ?0>%
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public PaginationSupport(List items, int F;5S2:a@Z
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totalCount, int startIndex){ 0v%ZKvSID
setPageSize(PAGESIZE); 86c@Kk7z
setTotalCount(totalCount); n\f8%z
setItems(items); a?4'',~
setStartIndex(startIndex); yQA6w%
} f;<qGM.#|
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public PaginationSupport(List items, int Yx4TUA$c'
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totalCount, int pageSize, int startIndex){ 6I0G.N
setPageSize(pageSize); | |=q"h3(
setTotalCount(totalCount); /&g5f4[|p
setItems(items); j]uL9\>
setStartIndex(startIndex); C?v_ig
} -e6~0%X
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publicList getItems(){ 2!Ip!IQ:
return items; %SW"{GnO^
} }bQqln)#
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publicvoid setItems(List items){ B3Id}[V
this.items = items; V=)0{7-9
} xz1jRI$
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publicint getPageSize(){ ykY#Y}?^
return pageSize; 7,.Hj&'B
} %#!pAUP\&
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publicvoid setPageSize(int pageSize){ 8cq H0{
this.pageSize = pageSize; qDR`)hle
} 6\MH2&L<
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publicint getTotalCount(){ $i s|B9B
return totalCount; H-&Z+4 +Xs
} Vo@[
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publicvoid setTotalCount(int totalCount){ wYxnKm~f
if(totalCount > 0){ 5(@P1Bi
this.totalCount = totalCount; ?W l=F/
int count = totalCount / "c[ D0{\{
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pageSize; }]0f -}
if(totalCount % pageSize > 0) cR0+`&
count++; 9EryHV|
indexes = newint[count]; ES~ykE
for(int i = 0; i < count; i++){ 5v51:g>c
indexes = pageSize * A"wor\(
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} 5ZG-3qj
}else{ J(CqT/Au-
this.totalCount = 0; 3*13XQ
} 1aC?*,e?
} -"u9s[L{
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publicint[] getIndexes(){ %<x2=#0
return indexes; [12^NEt
} N%1T>cp0
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publicvoid setIndexes(int[] indexes){ Pb05>J3N
this.indexes = indexes; -rYOx9P4
} 0QE2e'}}-
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publicint getStartIndex(){ ZqaCe>
return startIndex; ({/@=e x*
} :OC`X~}Rc
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publicvoid setStartIndex(int startIndex){ 92}UP=RW!
if(totalCount <= 0) 16q"A$
this.startIndex = 0; $7q'Be@{
elseif(startIndex >= totalCount) ocwh*t)<k
this.startIndex = indexes Xne{:!btw
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[indexes.length - 1]; @pueM+(L&
elseif(startIndex < 0) VH3j
this.startIndex = 0; K8 Y/sHl
else{ 8+5-7)
this.startIndex = indexes Ip}(!D|
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[startIndex / pageSize]; ^cO^3=
} rYI9?q
} Q<$I,C]
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publicint getNextIndex(){ o,a3J:j]
int nextIndex = getStartIndex() + qp>V\h\
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pageSize; Hd(|fc{2
if(nextIndex >= totalCount) 3cK`RM `
return getStartIndex(); #`P4s>IL1
else nKn,i$sO/.
return nextIndex; %;0Llxf"
} _aOisN{
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publicint getPreviousIndex(){ 7T
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int previousIndex = getStartIndex() - PfTjC"`,
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pageSize; mgeNH~%m@*
if(previousIndex < 0) ?YR/'Vq97
return0; D.G+*h@ g
else B6tp,Np5,
return previousIndex; AtNu:U$
} uZ mi
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} i>gbT+*E!
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抽象业务类 h@$M.h@mcG
java代码: V[>MKB(
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/** ]Auk5M +
* Created on 2005-7-12 m_~!Lj[u.
*/ aL@myq.
package com.javaeye.common.business; yRaB\'
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import java.io.Serializable; +o)o4l%3
import java.util.List; F3/aq+<P[
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import org.hibernate.Criteria; 1MI/:vy-
import org.hibernate.HibernateException; /5:C$ik
import org.hibernate.Session; l0Wp%T
import org.hibernate.criterion.DetachedCriteria; }9[E+8L1
import org.hibernate.criterion.Projections; c%Y%c2([
import ]dB6--
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org.springframework.orm.hibernate3.HibernateCallback; Q/ rOIHiI
import 'Dyt"wfo
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org.springframework.orm.hibernate3.support.HibernateDaoS omQaN#!,
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upport; 7a.$tT
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import com.javaeye.common.util.PaginationSupport; ej dYh $
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public abstract class AbstractManager extends VH1PC
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HibernateDaoSupport { ]MJyBz+k
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privateboolean cacheQueries = false; qCg`"/0
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privateString queryCacheRegion; \"B oTi'2!
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publicvoid setCacheQueries(boolean 7)sEW#d!
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cacheQueries){ JFe %W?}.D
this.cacheQueries = cacheQueries; rjfcZ@
} FWqnlK#
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publicvoid setQueryCacheRegion(String ;Hr
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queryCacheRegion){ .RocENO0
this.queryCacheRegion = |5|^[v
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queryCacheRegion; =~Oi:+L
} BH _y0[y
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publicvoid save(finalObject entity){ 4/;
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getHibernateTemplate().save(entity); e _\]Q-
} rJi;"xF8
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publicvoid persist(finalObject entity){ d5$2*h{^v
getHibernateTemplate().save(entity); ??tyz4$;
} MkJ}dncg*
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publicvoid update(finalObject entity){ J~7E8
getHibernateTemplate().update(entity);
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} ')_Gm{A#p
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publicvoid delete(finalObject entity){ WbZ{)
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getHibernateTemplate().delete(entity); $r%m<Uc;}O
} :<Z*WoEmt
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publicObject load(finalClass entity, ZzfGs
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finalSerializable id){ /VB n
return getHibernateTemplate().load ct='Z E
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(entity, id); D)z'FOaI
} Am3^3>
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publicObject get(finalClass entity, {?*3Ou
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finalSerializable id){ ?Pz:H/$
return getHibernateTemplate().get s6<`#KFAg
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(entity, id); .Lz\/ OS
} cF{5[?wS
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publicList findAll(finalClass entity){ Di{T3~fqU
return getHibernateTemplate().find("from \.p{~Hv
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" + entity.getName()); C$`z23E
} %0 (,f
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publicList findByNamedQuery(finalString Q:?]:i/*
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namedQuery){
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return getHibernateTemplate Th,15H
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().findByNamedQuery(namedQuery); ^44AE5TO
} @2Xw17[f35
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publicList findByNamedQuery(finalString query, vH_QSx;C#
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finalObject parameter){ dK|6p_
return getHibernateTemplate ?,e7v.b
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().findByNamedQuery(query, parameter); vwQY_J8
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publicList findByNamedQuery(finalString query, \(Z'@5vC
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finalObject[] parameters){ \y?Vou/
return getHibernateTemplate
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().findByNamedQuery(query, parameters); }R5>ja0
} _YzItge*
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publicList find(finalString query){ 8
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return getHibernateTemplate().find 0-#SvTf>;:
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(query); b['Jr% "O
} ~M`-sSjZs
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