Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Q"UWh~
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ;4DqtR"7Y
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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 |BrD:+
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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 V_Owi5h
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分页支持类: x!$Dje}
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java代码: # 3{g6[Y
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package com.javaeye.common.util; HD"Pz}k4
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import java.util.List; >y<yFO{
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publicclass PaginationSupport { vwZ d@%BO
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publicfinalstaticint PAGESIZE = 30; ofeSGx
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privateint pageSize = PAGESIZE; &%YFO'>>}
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privateList items; jn+NX)9
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privateint totalCount; _ PC}`Y'&
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privateint[] indexes = newint[0]; /+pPcK
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privateint startIndex = 0; C:C9swik"5
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public PaginationSupport(List items, int q7id?F}3&
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totalCount){ mG,%f"b0
setPageSize(PAGESIZE); &=SP"@D
setTotalCount(totalCount); -OLXR c=
setItems(items); ![O@{/
setStartIndex(0); IEb"tsel
} K*&?+_v
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public PaginationSupport(List items, int gemjLuf
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totalCount, int startIndex){ :v/6k
setPageSize(PAGESIZE); ![H!Y W'
setTotalCount(totalCount); {,r7dxI)`
setItems(items); .;gK*`G2W)
setStartIndex(startIndex); gR `:)>
} d\nBc6
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public PaginationSupport(List items, int $#V^CmW.
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totalCount, int pageSize, int startIndex){ W!a~ #R/r-
setPageSize(pageSize); i?^Cc\gH
setTotalCount(totalCount); RZykwD(
setItems(items); g=?KpI-pn0
setStartIndex(startIndex); USVM' ~p I
} 6km{=
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publicList getItems(){ %SV"iXxY
return items; ?L|Jc_E
} +cAN4
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publicvoid setItems(List items){ , WF)GS|7V
this.items = items; _#c^z;!
} 4uip!@$K
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publicint getPageSize(){ H!dUQ
return pageSize; MxiU-
} *qcL(] Yq
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publicvoid setPageSize(int pageSize){ /Cd`h;#@
this.pageSize = pageSize; V'h
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} 7#Qa/[? D
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publicint getTotalCount(){ g%w@v$
return totalCount; <DS+"#
} !=#230Y
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publicvoid setTotalCount(int totalCount){ Z-m,~Hh
if(totalCount > 0){ SM:SxhrGt
this.totalCount = totalCount; fTi,S)F'
int count = totalCount / JL1%XQ
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pageSize; sV7dgvVd
if(totalCount % pageSize > 0) nbYkr*: "t
count++; H3 _7a 9
indexes = newint[count]; FAu G`zu
for(int i = 0; i < count; i++){ an3HKfv
indexes = pageSize * T6f{'.w
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} +j 5u[X
}else{ &?3?8Q\
this.totalCount = 0; 1QRE-ndc
} P9J3Ii!
} 8|[\Tp:;
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publicint[] getIndexes(){ `4s5yNUi=
return indexes; <p(&8P
} N$ZThZqqv
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publicvoid setIndexes(int[] indexes){ ww"ihUX
this.indexes = indexes; lh*m(
} GK}?*Lfs
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publicint getStartIndex(){ wxZnuCO%H8
return startIndex; fiTMS:
} G#'3bxI{f+
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publicvoid setStartIndex(int startIndex){ %5RYa<oP
if(totalCount <= 0) @M4~,O6-
this.startIndex = 0; ^ j@Q2>&?
elseif(startIndex >= totalCount) Kq`Luf
this.startIndex = indexes |bDN~c:/
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[indexes.length - 1]; UQ>GAzh
elseif(startIndex < 0) <W,k$|w
this.startIndex = 0; w;Qo9=-
else{ L}A R{
this.startIndex = indexes q9qmz[
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[startIndex / pageSize]; lg;Y}?P
} `<t{NJ&f
} 'O`jV0aa'
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publicint getNextIndex(){ S$]:3
int nextIndex = getStartIndex() + L4sN)EI
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pageSize; 9G_=)8sOV
if(nextIndex >= totalCount) p'k stiB
return getStartIndex(); ~PvW+UMLk
else FStE/2?
return nextIndex;
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} 7V0:^Jov
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publicint getPreviousIndex(){ w;QDQ
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int previousIndex = getStartIndex() - $E|W|4N
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pageSize; 5 LX3.
if(previousIndex < 0) wRPBJ-C)
return0; UF<|1;'
else /db?ltb
return previousIndex; ~1Tz[\H#R
} T-&CAD3 ,O
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} |k&.1NkZ
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抽象业务类 =[{Pw8['
java代码: /BT;Q)(&
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/** T<54qe4`p
* Created on 2005-7-12 a\}|ikiE
*/ w^|,[G^}H
package com.javaeye.common.business; X3L9j(
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import java.io.Serializable; EFql
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import java.util.List; ?xQlX%&`6
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import org.hibernate.Criteria; kTiQO2H
import org.hibernate.HibernateException; 1>%SSQ
import org.hibernate.Session; S$+ v? Y`)
import org.hibernate.criterion.DetachedCriteria; Ynz^M{9)K
import org.hibernate.criterion.Projections; g#[9O'H
import `8FC&%X_
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org.springframework.orm.hibernate3.HibernateCallback; YGWb!|Z$
import +1d\ZZA|6&
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org.springframework.orm.hibernate3.support.HibernateDaoS ]Vb#(2<2
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upport; V2 VsJ
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import com.javaeye.common.util.PaginationSupport; mApn(&
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public abstract class AbstractManager extends a+{g~/z;,Q
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HibernateDaoSupport { jLQjv
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privateboolean cacheQueries = false; eU%5CVH.v
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privateString queryCacheRegion; h*MR5qa
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publicvoid setCacheQueries(boolean e982IP
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cacheQueries){ klf<=V
this.cacheQueries = cacheQueries; e<9nt [
} o B6"D
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publicvoid setQueryCacheRegion(String H&03>.b
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queryCacheRegion){ p1?}"bHk
this.queryCacheRegion = 3~cOQ%#]4
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queryCacheRegion; =\XAD+
} 'oT}jI
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publicvoid save(finalObject entity){ h.?[1hT4R
getHibernateTemplate().save(entity); "L8V!M_e
} zl:
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publicvoid persist(finalObject entity){ Y43#];
getHibernateTemplate().save(entity); Ra{B8)Q
} COHJJONR
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publicvoid update(finalObject entity){ c hd${
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getHibernateTemplate().update(entity); }MIH{CMH
} >}4]51s
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publicvoid delete(finalObject entity){ [CUJ A
getHibernateTemplate().delete(entity); c%Gz{':+
} zr[~wM
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publicObject load(finalClass entity, gr fF\_[:
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finalSerializable id){ J:(Shd'4D
return getHibernateTemplate().load %ly;2HIk
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(entity, id); > T-O3/KN
} j}VOr >xz
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publicObject get(finalClass entity, vlPE8U=
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finalSerializable id){ :jUuw:\
return getHibernateTemplate().get <GNOT"z
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(entity, id); 0l:5hD,)F
} eAuJ}U[
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publicList findAll(finalClass entity){ +.N;h-'
return getHibernateTemplate().find("from 4z*_,@OA
@ [FFYVru
" + entity.getName()); ,Tz
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} A0]o/IBz
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publicList findByNamedQuery(finalString OK)0no=OAK
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namedQuery){ 5o3_x ~e
return getHibernateTemplate L|Ydd!m
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().findByNamedQuery(namedQuery); ZH}NlEn
} RdDcMZ
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publicList findByNamedQuery(finalString query, 'pe0Q-
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finalObject parameter){ <+b:
return getHibernateTemplate +>3c+h,%.
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().findByNamedQuery(query, parameter); W" !amMQ
} @s@
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publicList findByNamedQuery(finalString query, 9Ac t<(V
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finalObject[] parameters){ #NE^f2
return getHibernateTemplate
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().findByNamedQuery(query, parameters); lC4By,1*
} -Q@d
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publicList find(finalString query){ h0eo:Ahi
return getHibernateTemplate().find m2! 7M%]GC
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(query); "EHc&,B`
} ;MMFF {
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publicList find(finalString query, finalObject c[y8"M5
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parameter){ bGJUu#
return getHibernateTemplate().find {
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(query, parameter); :kVV.a#g
} nGbrWu]w
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public PaginationSupport findPageByCriteria ?c2TT
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(final DetachedCriteria detachedCriteria){ FSmi.7
return findPageByCriteria Za6oYM_z
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); z3C^L
} ul?BKV+3E
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public PaginationSupport findPageByCriteria asi1c
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(final DetachedCriteria detachedCriteria, finalint u J`&hX
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startIndex){ k:TfE6JZ
return findPageByCriteria SRTpE,
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(detachedCriteria, PaginationSupport.PAGESIZE, }$)<k
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startIndex); :#/bA&
} vO_quQ[ .
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public PaginationSupport findPageByCriteria e%U*~{m+
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(final DetachedCriteria detachedCriteria, finalint *lK4yI*%o
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pageSize, F^YIZ,=p!
finalint startIndex){ %5G BMMn
return(PaginationSupport) C6VoOT)\
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getHibernateTemplate().execute(new HibernateCallback(){ 9NP l]iA)
publicObject doInHibernate Tv$7aVi!
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(Session session)throws HibernateException { %D
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Criteria criteria = #:|Y(,c
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detachedCriteria.getExecutableCriteria(session); VTWE-:r
int totalCount = `0i3"06lr
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((Integer) criteria.setProjection(Projections.rowCount
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()).uniqueResult()).intValue(); Q:gn>/
criteria.setProjection }$U[5wL,_
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