Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 |'P]GK
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 sGyeb5c
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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 G_;)a]v8)
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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 !\nBh
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分页支持类: d4u})
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java代码: 6IBgt!=,
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package com.javaeye.common.util; t[ubn+
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import java.util.List; HJLu'KY}
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publicclass PaginationSupport { `NCwK6/i
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publicfinalstaticint PAGESIZE = 30; d/PiiiFf,
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privateint pageSize = PAGESIZE; |jI#"LbF
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privateList items; mw_~*Nc'9
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privateint totalCount; XC4X-j3
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privateint[] indexes = newint[0]; >p)MawT]
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privateint startIndex = 0; g[1gF&
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public PaginationSupport(List items, int $G8E 3|k
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totalCount){ SX<` {x&L
setPageSize(PAGESIZE); iP
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setTotalCount(totalCount); d74d/l1*{
setItems(items); 2)G
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setStartIndex(0); -e_hrCW&9
} 3kw,(-'1
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public PaginationSupport(List items, int XG}C+;4Aw
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totalCount, int startIndex){ kDEPs$^
setPageSize(PAGESIZE); #xho[\
setTotalCount(totalCount); (61EDKNd9
setItems(items); *^g:P^4
setStartIndex(startIndex); )Q1"\\2j0
} 6g 5#TpCh
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public PaginationSupport(List items, int ;T"zV{;7BR
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totalCount, int pageSize, int startIndex){ -&NN51-d\j
setPageSize(pageSize); 9KDEM gCW
setTotalCount(totalCount); Lx\8Z=
setItems(items);
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setStartIndex(startIndex); Z'4./
} Wi*.TWz3
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publicList getItems(){ ?ATOXy
return items; W}m)cn3@
} iL7DRQ1
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publicvoid setItems(List items){ Jy)KqdkX+
this.items = items; D ~stM
} `7[EKOJ3g
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publicint getPageSize(){ w1hPc!I
return pageSize; kw#;w=\>R{
} D>HOn^
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publicvoid setPageSize(int pageSize){ M.x=<:upp
this.pageSize = pageSize; gnFr}L&j
} C9~52+S
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publicint getTotalCount(){ kqM045W7
return totalCount; s"0Y3x3
} !F1M(zFD
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publicvoid setTotalCount(int totalCount){ 9{(.Il J>
if(totalCount > 0){ d9B]fi}
this.totalCount = totalCount; I/a/)No
int count = totalCount / 8D>n1b(H
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pageSize; aNScF
if(totalCount % pageSize > 0) ZG>PQA
count++; V,mw[Hw
indexes = newint[count]; }j^i}^Du,
for(int i = 0; i < count; i++){ N9jH\0nG
indexes = pageSize * )Hpa}FGT
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} QIB\AAclO
}else{ ]QpWih00V
this.totalCount = 0; 8 7BHq)
} Yn@lr6s
} :K-~fA%kt?
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publicint[] getIndexes(){ U*i{5/$
return indexes; ;*Ivn@L
} ~tBYIkvWT
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publicvoid setIndexes(int[] indexes){ B.dH(um
this.indexes = indexes; .ni_p 6!
} 4(|cG7>9-
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publicint getStartIndex(){ qHuZcht
return startIndex; v-#Q7T
} #pb92kA'
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publicvoid setStartIndex(int startIndex){ X' d9[).
if(totalCount <= 0) $ {O#
this.startIndex = 0; Km(n7Ah"
elseif(startIndex >= totalCount) $"FQj4%d
this.startIndex = indexes jBgP$g
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[indexes.length - 1]; =<{np
elseif(startIndex < 0) )+[ gd/<C.
this.startIndex = 0; P0W*C6&71|
else{ *pSQU=dmS
this.startIndex = indexes [3(74
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[startIndex / pageSize]; [U5\bX@$
} pimtiQqC
} AyNI$Q6Z
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publicint getNextIndex(){ "t(p&;d
int nextIndex = getStartIndex() + znxnL,-
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pageSize; [<%H>S1
if(nextIndex >= totalCount) bmfI~8
return getStartIndex(); '
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else g]4(g<:O
return nextIndex; >Db;yC&
} Ov-icDMm
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publicint getPreviousIndex(){ cki81bOT
int previousIndex = getStartIndex() - >4#)r8;dx
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pageSize; 5Ow[~p"l<
if(previousIndex < 0) vR s,zL$W
return0; TygW0b 1
else K('hC)1
return previousIndex; 7JEbH?lEN
} wgamshm"d
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} M_"L9^^>N
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抽象业务类 .NYbi@bk(<
java代码: -I&m:A$4*
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/** v2B0q4*BS?
* Created on 2005-7-12 =<?+#-;p
*/ -Z 4e.ay5
package com.javaeye.common.business; 555XCWyrC
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import java.io.Serializable; 8=NM|i
import java.util.List; gj*+\3KO@a
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import org.hibernate.Criteria; Dpl A?
import org.hibernate.HibernateException; .P[ _<8
import org.hibernate.Session; thifRd$4
import org.hibernate.criterion.DetachedCriteria; :_g$.h%%
import org.hibernate.criterion.Projections; 4lKq{X5<
import ?QFpv#4
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org.springframework.orm.hibernate3.HibernateCallback; AaWs}M
import ioYGZ%RG#
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org.springframework.orm.hibernate3.support.HibernateDaoS PE5R7)~A
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upport; VXR>]HUF
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import com.javaeye.common.util.PaginationSupport; z^#;~I @M
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public abstract class AbstractManager extends v7iuL6jl
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HibernateDaoSupport { Jl#%uU/sx
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privateboolean cacheQueries = false; Y8-86 *zC
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privateString queryCacheRegion; 7?GIS '
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publicvoid setCacheQueries(boolean ^(f"v
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cacheQueries){ PH+S};Uxv
this.cacheQueries = cacheQueries; B{'( L|
} VJickXA
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publicvoid setQueryCacheRegion(String 8,?h~prc
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queryCacheRegion){ +yk24
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this.queryCacheRegion = g*03{l#P
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queryCacheRegion; Z0Vl+
} |mGFts}0o'
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publicvoid save(finalObject entity){ +@p%
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getHibernateTemplate().save(entity); W-?()dX{
} E5I"%9X0H
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publicvoid persist(finalObject entity){ -*
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getHibernateTemplate().save(entity); DAcQz4T`
} 4QvsBpz@
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publicvoid update(finalObject entity){ 4KIRHnaj
getHibernateTemplate().update(entity); '>cKH$nVC}
} 95A1:A^t
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publicvoid delete(finalObject entity){ 2jR r,Nl
getHibernateTemplate().delete(entity); /OLFcxEWh
} cx&>#8s&
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publicObject load(finalClass entity, MvK !u
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finalSerializable id){ yku5SEJ\
return getHibernateTemplate().load 0
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(entity, id); $~VRza 8Q
} JtEo'As:[
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publicObject get(finalClass entity, 5ni~Q 9b
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finalSerializable id){ b{L/4bu
return getHibernateTemplate().get r:f[mk"-"A
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(entity, id); K/i*w<aPb7
} &PYK8}pBk3
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publicList findAll(finalClass entity){ r'^Hg/Jzt
return getHibernateTemplate().find("from G,o6292hj
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" + entity.getName()); +
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} D^l%{IG
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publicList findByNamedQuery(finalString )Im#dVQs=
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namedQuery){ 0ZZZoPo
return getHibernateTemplate %E#s\B,w
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().findByNamedQuery(namedQuery); #gz
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} 9$cWU_q{
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publicList findByNamedQuery(finalString query, g.BdlVB\
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finalObject parameter){ 7gj4j^a^]{
return getHibernateTemplate AgS7J(^&3
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().findByNamedQuery(query, parameter); -:|?h{q?u
} `o=q%$f#k~
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publicList findByNamedQuery(finalString query, d:BG#\e]v
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finalObject[] parameters){ wSa)*]%
return getHibernateTemplate &dM.
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().findByNamedQuery(query, parameters); ZCmgs4W!
} LAB=Vp1y3[
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publicList find(finalString query){ X:HacYqtC
return getHibernateTemplate().find T ]t'39
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(query); vHyC; 4'
} zHA!%>%'
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publicList find(finalString query, finalObject qTdh eX/
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parameter){ d,+Hd2o^X
return getHibernateTemplate().find B2>H_dmQ
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(query, parameter); 3EJj9}#x"'
} G<}()+L
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public PaginationSupport findPageByCriteria A\4D79>x
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(final DetachedCriteria detachedCriteria){ #.rdQ,)<
return findPageByCriteria B<5R
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); S\:P-&dC
} nyQ&f'<
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public PaginationSupport findPageByCriteria cG[l!Z
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(final DetachedCriteria detachedCriteria, finalint (SpX w,:
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startIndex){ zQcL|(N
return findPageByCriteria r)y=lAyF>
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(detachedCriteria, PaginationSupport.PAGESIZE, = bfJ^]R
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startIndex); @$ne{2J3
} kZR8a(4D
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public PaginationSupport findPageByCriteria pmuvg6@h
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(final DetachedCriteria detachedCriteria, finalint KaPAa:Q
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pageSize, @i2E\}
finalint startIndex){ CDsSrKhx
return(PaginationSupport) J l(&!?j
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getHibernateTemplate().execute(new HibernateCallback(){ \hTm)-FP
publicObject doInHibernate &5\iM^
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(Session session)throws HibernateException { %RTBV9LIXr
Criteria criteria = <^&ehy:7y
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detachedCriteria.getExecutableCriteria(session); 7I&&bWB
int totalCount = s2h@~y
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((Integer) criteria.setProjection(Projections.rowCount CS2Bo
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()).uniqueResult()).intValue(); MLXN Zd
criteria.setProjection GZEc l'h*
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(null); } df
W%{
List items = 5 h-@|t
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criteria.setFirstResult(startIndex).setMaxResults ?M8dP%&r
U>YAdrx2a
(pageSize).list(); &TUWW