Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ST2:&xH(
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 0SQrz$y
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 '{-Ic?F<P
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 {Fqwr>e
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分页支持类: et"Pb_-U
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java代码: TOhWfl;
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package com.javaeye.common.util; YmpaLZJ
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import java.util.List; ':3[?d1Es
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publicclass PaginationSupport { Kv2S&P|jXM
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publicfinalstaticint PAGESIZE = 30; ~KRS0^
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privateint pageSize = PAGESIZE; li,rPUCt
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privateList items; F{.\i *$
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privateint totalCount; lXZ*Pb<j
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privateint[] indexes = newint[0]; bLSc=f&
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privateint startIndex = 0; K8Q3~bMf
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public PaginationSupport(List items, int X&kp1Ih<^
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totalCount){ +g kJrw
setPageSize(PAGESIZE); nzaA_^`mB
setTotalCount(totalCount); :w!hkUx#
setItems(items); rwVp}H G
setStartIndex(0); SZyORN
} a+cDH
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public PaginationSupport(List items, int %1$#fxR
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totalCount, int startIndex){ Sb> &m
setPageSize(PAGESIZE); %1:caa@_p
setTotalCount(totalCount); 3h:y[Vm#9y
setItems(items); e0h[(3bXs$
setStartIndex(startIndex); A*wf:
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} |35OA/O?X
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public PaginationSupport(List items, int $XTtD UP@
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totalCount, int pageSize, int startIndex){ 92t.@!m`
setPageSize(pageSize); \hZ%NLj
setTotalCount(totalCount); 3F@P$4!#l
setItems(items); o{! :N> (
setStartIndex(startIndex); ]gg(Z!|iQ
} =#,`k<v%I
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publicList getItems(){ =u ?aP}zc
return items; )-emSV0zE
} YcX\t6VK
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publicvoid setItems(List items){ \0d'y#Gp*
this.items = items; Hcwfe=K&/
} XC)9aC@s
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publicint getPageSize(){ BjsT 9?6W/
return pageSize; U31@++C[
} 4&;iORw&E4
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publicvoid setPageSize(int pageSize){ QcW8A ,\q
this.pageSize = pageSize; @anjjC5a~
} gWGDm~+
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publicint getTotalCount(){ P|bow+4
return totalCount; QJRnpN/
} Tk4>Jb
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publicvoid setTotalCount(int totalCount){ #YYJ4^":k
if(totalCount > 0){ HyU: BW;
this.totalCount = totalCount; P+}~6}wJE
int count = totalCount / ;6Yg}L
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pageSize; %g}d}5s
if(totalCount % pageSize > 0) ,M;9|kE*
count++; uW(-?
indexes = newint[count]; !T][c~l
for(int i = 0; i < count; i++){ 3@Mh* \;\b
indexes = pageSize * 5tQz!M
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} oNyYx6q:Q
}else{ hOUH1m.
this.totalCount = 0; eMC^ORdY
} 31a,i2Q4
} "mW'tm1+
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publicint[] getIndexes(){ B/1j4/MS
return indexes; DFK@/.V
} su1lv#
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publicvoid setIndexes(int[] indexes){ ,Gt!nm_
this.indexes = indexes; {,Q )D$i
} FnA Kfh(
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publicint getStartIndex(){ }}=n]_f
return startIndex; @%Ld\8vdfJ
} iY,C0=n5Y
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publicvoid setStartIndex(int startIndex){ #T_!-;(Z
if(totalCount <= 0) Uz^N6q
this.startIndex = 0; #&}-
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elseif(startIndex >= totalCount) $72eHdy/yl
this.startIndex = indexes (XO=W+<'
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[indexes.length - 1]; $v;WmYTJ
elseif(startIndex < 0) S{+t>en
this.startIndex = 0; o+E~iCu5
else{ 1'E=R0`pA
this.startIndex = indexes A*y4<'}<
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[startIndex / pageSize]; x|~8?i$%
} .KA-=$~J1
} 3U@jw,K!{A
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publicint getNextIndex(){ xSmG,}3mF
int nextIndex = getStartIndex() + |IcW7(
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pageSize; XHk"nbj
if(nextIndex >= totalCount) */;7Uv7
return getStartIndex(); o8g7wM]M
else >&PM'k
return nextIndex; Z6Fu~D2Uy
} _nMd
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publicint getPreviousIndex(){ PXMd=,}
int previousIndex = getStartIndex() - E )_n?>Ar
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pageSize; 90Ki.K 0
if(previousIndex < 0) Fc5.?X-
return0; JQ1MuE'
else MbRTOH
return previousIndex; V+E8{|dYL
} d+q],\"R
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} +F8{4^w1
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抽象业务类 b)d;eS
java代码: fN&\8SPE
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/** g<j)
* Created on 2005-7-12 [CJ<$R !
*/ JQ03om--(
package com.javaeye.common.business; <w2h@ea
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import java.io.Serializable; ;qWu8\T+
import java.util.List; ~[ufL25K
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import org.hibernate.Criteria; E_ns4k#uG
import org.hibernate.HibernateException; Ehx9-*]
import org.hibernate.Session; bJ^h{]
import org.hibernate.criterion.DetachedCriteria; iOk;o=
import org.hibernate.criterion.Projections; ) E^S+ps
import PQ&*(G
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org.springframework.orm.hibernate3.HibernateCallback; VQ9A/DH/
import 6'# 5Dqw"r
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org.springframework.orm.hibernate3.support.HibernateDaoS 7:jLZ!mgi
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upport; ;{ifLI0#
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import com.javaeye.common.util.PaginationSupport; /lBK )(
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public abstract class AbstractManager extends b84l`J
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HibernateDaoSupport { f^F;`;z
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privateboolean cacheQueries = false; T9nb ~P[
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privateString queryCacheRegion; =[(34#
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publicvoid setCacheQueries(boolean ,2M}qs"P7G
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cacheQueries){ *#=Ij r~
this.cacheQueries = cacheQueries; &A0OYV3i.
} W==~9
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publicvoid setQueryCacheRegion(String `2.c=,S{
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queryCacheRegion){ FZi@h
this.queryCacheRegion = f$lb.fy5
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queryCacheRegion; -#Z df|
} )3h\QE!z
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publicvoid save(finalObject entity){ 2k.VTGak
getHibernateTemplate().save(entity); @Xo*TJB
} Rc1j^S;>
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publicvoid persist(finalObject entity){ 6v)TCj/
getHibernateTemplate().save(entity); :j&enP5R(q
} j9
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publicvoid update(finalObject entity){ dNe!X0[
getHibernateTemplate().update(entity); ~c)&9'
} TQ"XjbhU;X
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publicvoid delete(finalObject entity){ 3TwjC:Yhv2
getHibernateTemplate().delete(entity); \|HtE(uCM1
} m+c-"arIpA
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publicObject load(finalClass entity, [q9B"@X
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finalSerializable id){ !l[;,l
return getHibernateTemplate().load 8C3k:
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(entity, id); SzW;Yb"#^k
} |*bUcS<S
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publicObject get(finalClass entity, x3O%W?5
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finalSerializable id){ Tz,-~ mc
return getHibernateTemplate().get U)(R4Y6 v
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(entity, id); U^PXpNQ'
} ~~>m
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publicList findAll(finalClass entity){ ?}HK!feU
return getHibernateTemplate().find("from 'va[)~!
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" + entity.getName()); $ f:uBhM
} {hS!IOM
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publicList findByNamedQuery(finalString k~[jk5te
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namedQuery){ Myc-lCE
return getHibernateTemplate h#0n2o #
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().findByNamedQuery(namedQuery); c9/w{}F
} E1QJ^]MG.
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publicList findByNamedQuery(finalString query, +5y^c|L0
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finalObject parameter){ A]bb*a1
return getHibernateTemplate 'w:ugb9]
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().findByNamedQuery(query, parameter); jF6_yw
} .tRm1&Qi
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publicList findByNamedQuery(finalString query, ?b_E\8'q]
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finalObject[] parameters){ S#ryEgc]
return getHibernateTemplate dgVGP_~
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().findByNamedQuery(query, parameters); }IygU 6{G
} I_1?J*
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publicList find(finalString query){ +yL; ?+s>=
return getHibernateTemplate().find wUvE
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(query); g9C;JmU
} CPZ{
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publicList find(finalString query, finalObject hj];a,Br&
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parameter){ 8u*<GbKGI
return getHibernateTemplate().find C^q|(G)
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(query, parameter); Le#srr
} a
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public PaginationSupport findPageByCriteria W* LC3B^
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(final DetachedCriteria detachedCriteria){ o@A`AA9
return findPageByCriteria M~zI;:0O
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); <0';2yP"
} 8L[+$g`
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public PaginationSupport findPageByCriteria ;Am3eJa*-
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(final DetachedCriteria detachedCriteria, finalint K+Him]
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startIndex){ + }"+
return findPageByCriteria i&DbZ=n2
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(detachedCriteria, PaginationSupport.PAGESIZE, +c8`N'~
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startIndex); ,X/j6\VBO
} AYf}=t|
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public PaginationSupport findPageByCriteria r 2:{r`ocM
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(final DetachedCriteria detachedCriteria, finalint bB4FjC':
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pageSize, iZTU]+z!
finalint startIndex){ p7\LLJ y
return(PaginationSupport) xn, u$@F
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getHibernateTemplate().execute(new HibernateCallback(){ ?Nt( sZ-
publicObject doInHibernate .7.1JT#@A7
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(Session session)throws HibernateException { 'n h^;
Criteria criteria = R\cx-h*
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detachedCriteria.getExecutableCriteria(session); :G6CWE
int totalCount = lAnOO5@8
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((Integer) criteria.setProjection(Projections.rowCount <IWg]AJT:
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()).uniqueResult()).intValue(); (?A
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criteria.setProjection #;99vwc
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(null); XR]bd
List items = f5//?ek
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criteria.setFirstResult(startIndex).setMaxResults nql1I<I
e<+)IW:
(pageSize).list(); _#M4zO7
PaginationSupport ps = OM.-apzC
{_tq6ja-<
new PaginationSupport(items, totalCount, pageSize, =m<b+@?T
,$!F,c
startIndex); PM!JjMeQh
return ps; n-K/dI
} NEIF1(:
}, true); H6Zo|n
} "~ =O`5V
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public List findAllByCriteria(final #Ey_.4S
)09ltr0@"
DetachedCriteria detachedCriteria){ PP!/WX
return(List) getHibernateTemplate i~E0p
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().execute(new HibernateCallback(){ Wlg 1t~1=
publicObject doInHibernate 'hu'}F{
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