Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 3j]UEA^
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 NW}>pb9
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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 d3\OHkM0^
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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 cZCGnzy
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分页支持类: |LX rGyk^
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java代码: g5lmUKlQ$0
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package com.javaeye.common.util; %s~NQ;Y
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import java.util.List; @Fm{6^
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publicclass PaginationSupport { pDLu +}@
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publicfinalstaticint PAGESIZE = 30; Verbmeg&n
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privateint pageSize = PAGESIZE; FYx `o\
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privateList items; <3i4NXnL2
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privateint totalCount; ?.rH;:9To
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privateint[] indexes = newint[0]; rX|y/0)F
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privateint startIndex = 0; v!pj v%
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public PaginationSupport(List items, int c&| '3i+
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totalCount){ &viwo}ls0
setPageSize(PAGESIZE); IF36K^K
setTotalCount(totalCount); Tdk2436=
setItems(items); EMVoTW)z
setStartIndex(0); #x4h_K
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} P/C+L[X=
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public PaginationSupport(List items, int lgv-)5|O+H
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totalCount, int startIndex){ ?' ez.a}
setPageSize(PAGESIZE); O$<%z[
setTotalCount(totalCount); @~!-a
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setItems(items); 0]h8)EW
setStartIndex(startIndex); oqd
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} %X0NHta~@
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public PaginationSupport(List items, int <.A C=4@V
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totalCount, int pageSize, int startIndex){ [U3D`V$xD
setPageSize(pageSize); #2lvfR|
setTotalCount(totalCount); :cmI"Bo
setItems(items); |$SvD2^
setStartIndex(startIndex); z[KN^2YS
} @
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publicList getItems(){ MWn L#!
return items; aCH:#|B
} \: _.N8"
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publicvoid setItems(List items){ ,SJK
this.items = items; \yX !P1
} _r?;lnWx@
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publicint getPageSize(){ +/b4@B7
return pageSize; O"J.k&C<,
} [b
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publicvoid setPageSize(int pageSize){ i9EMi_%
this.pageSize = pageSize; Zs5I?R1e8
} z?t(+^
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publicint getTotalCount(){ !k>H e*M}P
return totalCount; -o!,,XYj .
} A_(+r
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publicvoid setTotalCount(int totalCount){ d-N"m I-
if(totalCount > 0){
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this.totalCount = totalCount; l-^XW?CfL
int count = totalCount / )[M<72
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pageSize; oCdOC5
if(totalCount % pageSize > 0) 76i
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count++; > ^v8N
indexes = newint[count]; :56lzsWUE<
for(int i = 0; i < count; i++){ xXU/m|
indexes = pageSize * _6-/S!7Y\
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} )p^jsv.
}else{ ,^IZ[D>u)
this.totalCount = 0; k+R?JWC:
} {O&liU4
} 5WNg+
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publicint[] getIndexes(){ S7~F*CGBh
return indexes; qQ
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} W &wDH
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publicvoid setIndexes(int[] indexes){ qM:)daS1w
this.indexes = indexes; oJ@PJvmR&a
} !zkEh9G
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publicint getStartIndex(){ ccRk4xR
return startIndex; 7n95>as
} h7]]F{r5
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publicvoid setStartIndex(int startIndex){ *-!ndbf
if(totalCount <= 0) KW6" +,Th
this.startIndex = 0; g+/U^JIc4l
elseif(startIndex >= totalCount) K9M.+d4
this.startIndex = indexes k`~br249
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[indexes.length - 1]; <$ZT]p T
elseif(startIndex < 0) pH:|G
this.startIndex = 0; P_g0G#`4
else{ 4qz{D"M
this.startIndex = indexes =XBXSW8)DJ
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[startIndex / pageSize]; #DRtMrfat
} gwz _b
} WblV`"~e
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publicint getNextIndex(){ ?~Ed
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int nextIndex = getStartIndex() + ,L:)ZZgN
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pageSize; # +]! u%n
if(nextIndex >= totalCount) 2_\|>g|
return getStartIndex(); h> %JG'DV
else lKwT5ma7
return nextIndex; ,k! f`
} *B<I> <'G
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publicint getPreviousIndex(){ L"IHyUW
int previousIndex = getStartIndex() - [=1?CD
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pageSize; eRy'N|'
if(previousIndex < 0) FH21m wV
return0; BF[?* b
else (a!,)
return previousIndex; % P)}(e6y
} /0B?3&H
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} }t-|^mY>
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抽象业务类 |3@Pt>Ikl
java代码: oP75|p
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/** XRz6Yf(/
* Created on 2005-7-12 J5IJy3d
*/ 13kb~'+&r
package com.javaeye.common.business; 0U*"OSpF
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import java.io.Serializable; ]LOtwY
import java.util.List; qM !q,Q
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import org.hibernate.Criteria; ZSt
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import org.hibernate.HibernateException; $*-L8An?
import org.hibernate.Session; ~At.V+
import org.hibernate.criterion.DetachedCriteria; G_mu7w
import org.hibernate.criterion.Projections; =V
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import 6l7a9IJ
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org.springframework.orm.hibernate3.HibernateCallback; yuX0Y{:I
import io3'h:+9s
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org.springframework.orm.hibernate3.support.HibernateDaoS :C6rN}_k
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upport; Oh4WYDyT
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import com.javaeye.common.util.PaginationSupport; k8V0-.UL}
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public abstract class AbstractManager extends E/;YhFb[
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HibernateDaoSupport { wJkkc9Rh'(
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privateboolean cacheQueries = false; 9Bw"VN]W
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privateString queryCacheRegion; ix`x dVj`
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publicvoid setCacheQueries(boolean jQ}|]pj+
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cacheQueries){ $7YLU{0
this.cacheQueries = cacheQueries; 6^Vf 5W{
} @7'gr>_E
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publicvoid setQueryCacheRegion(String ^yTN(\9
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queryCacheRegion){ a!]%@A6p
this.queryCacheRegion = <~w#sIh
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queryCacheRegion; LL+rdxJO^
} Cx~z^YP'
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publicvoid save(finalObject entity){ kw'D2692
getHibernateTemplate().save(entity); ^)~M,rW8c
} E !M+37/
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publicvoid persist(finalObject entity){ ,#loVLy
getHibernateTemplate().save(entity); m(Ynl=c
} rC16?RovQ@
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publicvoid update(finalObject entity){ t:7jlD!d
getHibernateTemplate().update(entity); e>.xXg6Zn
} *
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publicvoid delete(finalObject entity){ Y~!@
getHibernateTemplate().delete(entity); Xy+|D#b
} d+'+z %s%
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publicObject load(finalClass entity, ^*OA%wg3=h
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finalSerializable id){ A )cb
return getHibernateTemplate().load x;Q2/YZ#
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(entity, id); IYPLitT
} }s[/b"%y
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publicObject get(finalClass entity, [geY:v_B
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finalSerializable id){
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return getHibernateTemplate().get >smaR^m
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(entity, id); 5Fl|=G+3@g
} T5h[{J^
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publicList findAll(finalClass entity){ zl5S)/A
return getHibernateTemplate().find("from g d -fJ._1
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" + entity.getName()); T$e_ao|
} Tp7?:YY|
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publicList findByNamedQuery(finalString 7vFqO;
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namedQuery){ (hoqLL\}k
return getHibernateTemplate {`LV{!
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().findByNamedQuery(namedQuery); 809-p_)B
} fu/c)D6u*m
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publicList findByNamedQuery(finalString query, cW
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finalObject parameter){ ~EBZlTN
return getHibernateTemplate I
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().findByNamedQuery(query, parameter); };*5+XY^
} ":Q^/;D}U
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publicList findByNamedQuery(finalString query, 3-05y!vbcE
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finalObject[] parameters){ D+V^nCcx%
return getHibernateTemplate ktCh*R[`
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().findByNamedQuery(query, parameters); 4{Iz\:G:{/
} }7V/(K
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publicList find(finalString query){ _heQ|'(
return getHibernateTemplate().find KH;e)91
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(query); ?@nu]~
} QMIXz[9w
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publicList find(finalString query, finalObject |
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parameter){ &"BKue~q@p
return getHibernateTemplate().find loZfzN&6A
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(query, parameter); dL"v*3Fy
} 43eGfp'
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public PaginationSupport findPageByCriteria 3laSPih[.
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(final DetachedCriteria detachedCriteria){ a}wB7B;,g
return findPageByCriteria xZkLN5I{
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); ISl'g'o
} Eb.{M
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public PaginationSupport findPageByCriteria m,pDjf
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(final DetachedCriteria detachedCriteria, finalint ?.T=(-
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startIndex){ P"- ,^?6
return findPageByCriteria tDi<n}
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(detachedCriteria, PaginationSupport.PAGESIZE, <_NF
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startIndex); Y A;S'dxY
} xQN](OKG
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public PaginationSupport findPageByCriteria +%FGti$[
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(final DetachedCriteria detachedCriteria, finalint X}^,g
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pageSize, 2qN6{+]
finalint startIndex){ [E=t{&t
return(PaginationSupport) m86w{b$8
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getHibernateTemplate().execute(new HibernateCallback(){ bJ9>,,D
publicObject doInHibernate s,0,w--=
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(Session session)throws HibernateException { ;'nu9FU*O
Criteria criteria = -tDmzuD6
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detachedCriteria.getExecutableCriteria(session); VDscZt)y8
int totalCount = ?p/i}28=y
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((Integer) criteria.setProjection(Projections.rowCount lT*Hj.
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()).uniqueResult()).intValue(); L8!xn&uyP=
criteria.setProjection )u<sEF
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(null); Cgt{5
List items = ! k&<
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criteria.setFirstResult(startIndex).setMaxResults V7 c7(G
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(pageSize).list(); ?(hdV?8)P
PaginationSupport ps = (0^u
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new PaginationSupport(items, totalCount, pageSize, 8j8FQ!M
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startIndex); *y7^4I-J
return ps; \Z<' u;
} M" %w9)@
}, true); s&z+j%;+o
} *YYm;J'
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public List findAllByCriteria(final {R]4N]l>
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DetachedCriteria detachedCriteria){ 7+=fD|Cl
return(List) getHibernateTemplate )9J&M