Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 o1?S*
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 #\8"d
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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 #,9s\T
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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 aH?+^f"D
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分页支持类: FuM:~jv
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java代码: Fs3
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package com.javaeye.common.util; h343$,))u
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import java.util.List; `W:z#uNG]
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publicclass PaginationSupport { FeZ*c~q
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publicfinalstaticint PAGESIZE = 30; \ZA@r|=$
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privateint pageSize = PAGESIZE; j5wfqi
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privateList items; j5[Y0)pV\
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privateint totalCount; )Dp0swJ
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privateint[] indexes = newint[0]; q
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privateint startIndex = 0; PthgxB^
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public PaginationSupport(List items, int +e,c'.
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totalCount){ \zcR75
setPageSize(PAGESIZE); as(/
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setTotalCount(totalCount); )8!*,e=4
setItems(items); |BUgsE
setStartIndex(0); @,j,GE%
} O0FUJGuTS
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public PaginationSupport(List items, int 3RanAT.nu:
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totalCount, int startIndex){ (:I]v_qEYS
setPageSize(PAGESIZE); fD lo L
setTotalCount(totalCount); 'b0r?A~c=
setItems(items); H,c`=Ii3
setStartIndex(startIndex); Gr 4v&Mz:
} o*Xfgc
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public PaginationSupport(List items, int n.rn+nuwv
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totalCount, int pageSize, int startIndex){ SK#&%Yk
setPageSize(pageSize); \%7fm#z6
setTotalCount(totalCount); v[2&0&!K#
setItems(items); qX*xQA|ak,
setStartIndex(startIndex); wTD}c1J(
} 5rmU9L
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publicList getItems(){ yM `u]p1
return items; rvlvk"
} Se_]=>WI
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publicvoid setItems(List items){ 8ok=&Gq4
this.items = items; Vef!5]t5
} l2kGFgc
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publicint getPageSize(){ h!ogH >S~
return pageSize; damG*-7Svx
} |j-ng;
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publicvoid setPageSize(int pageSize){ LRg]'?
this.pageSize = pageSize; v3aPHf
} DR{O.TX
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publicint getTotalCount(){ 7nPcm;Er
return totalCount; F}7sb#G
} 5.*,IedY
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publicvoid setTotalCount(int totalCount){ co~NXpqg
if(totalCount > 0){ } lDX3h
this.totalCount = totalCount; 7FJ4;HLQ
int count = totalCount / c-PZG|<C[
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pageSize; )|v y}Jf7
if(totalCount % pageSize > 0)
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count++; x(cv}#}S8
indexes = newint[count]; i%JJ+9N
for(int i = 0; i < count; i++){ - om9 Z0e
indexes = pageSize * 0ki- /{;
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} /OWwC%tM/
}else{ BvsSrse
this.totalCount = 0; oOaFA+0x
} |?#JCG
} aopZ-^
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publicint[] getIndexes(){ MqB@}!
return indexes; +C8O"
} ZMb+sUK
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publicvoid setIndexes(int[] indexes){ Ps>:|j+
this.indexes = indexes; Ny^f'tsA
} }%8ZN :
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publicint getStartIndex(){ Uffwzd!
return startIndex; v@soS1V!
} kqm(D#
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publicvoid setStartIndex(int startIndex){ fj;ZGbg-O
if(totalCount <= 0) ;_vhKU)%J#
this.startIndex = 0; 1,%`vlYv
elseif(startIndex >= totalCount) ewU*5|*[
this.startIndex = indexes yAryw{(
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[indexes.length - 1];
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elseif(startIndex < 0) +7}^Y}(
this.startIndex = 0; &J&'J~N
else{ 7%i'F=LzT
this.startIndex = indexes y\Aa;pL)RQ
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[startIndex / pageSize]; -0d9,,c
} 6[3Xe_
} /iFn=pk1?
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publicint getNextIndex(){ IQ@9S
int nextIndex = getStartIndex() + q* p
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pageSize; Q?i_Nl/|
if(nextIndex >= totalCount) /"8e,
return getStartIndex(); |@iM(MM[?
else KU,SAcfR7
return nextIndex; c$!?4z_.
} Qc3d<{7\~
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publicint getPreviousIndex(){ SG)Fk *1
int previousIndex = getStartIndex() -
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pageSize; z3uR1vF'
if(previousIndex < 0) {6v.(Zlh$
return0; TQT3]h6
else bO\++zOF
return previousIndex; -/pz3n
} pPBXUu'
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} V|MHDMD=
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抽象业务类 EwzR4,r\M
java代码: (p[#[CI9
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/** N.JR($N$
* Created on 2005-7-12 ?>h
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package com.javaeye.common.business; '#f<wfn
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import java.io.Serializable; ^~H{I_Y
import java.util.List; @KTuG ?.
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import org.hibernate.Criteria; ;#85 _/
import org.hibernate.HibernateException; ojy^A
import org.hibernate.Session; R'k`0
import org.hibernate.criterion.DetachedCriteria; >J7slDRo
import org.hibernate.criterion.Projections; =7<JD}G
import /yG34) aB
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org.springframework.orm.hibernate3.HibernateCallback; -i`jS_-Cv-
import +& B?f
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org.springframework.orm.hibernate3.support.HibernateDaoS teJt.VA7)
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upport; jsN[Drr a
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import com.javaeye.common.util.PaginationSupport; N:<$]x>
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public abstract class AbstractManager extends W~
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HibernateDaoSupport { 1,wcf,
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privateboolean cacheQueries = false; @ b!]Jw
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privateString queryCacheRegion; @wR3L:@
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publicvoid setCacheQueries(boolean >9{?]x
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cacheQueries){ OT
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this.cacheQueries = cacheQueries; I_r@Y:5{
} Me.I>7c
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publicvoid setQueryCacheRegion(String G!Zb27u+
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queryCacheRegion){ ^X96yj'?
this.queryCacheRegion = |(.\J`_e
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queryCacheRegion; =P(*j7=
} ;bE/(nz M
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publicvoid save(finalObject entity){ Z~J]I|R:
getHibernateTemplate().save(entity); s * (a
} >5CK&6
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publicvoid persist(finalObject entity){ S~Gse+*
getHibernateTemplate().save(entity); XRV]u|w=g
} CPOHqK`k
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publicvoid update(finalObject entity){ /pj[c;aO
getHibernateTemplate().update(entity); J~2SGXH)^?
} ~m6=s~Vn
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publicvoid delete(finalObject entity){ Z mJ<h&
getHibernateTemplate().delete(entity); n~ *|JJ*`
} 7 9tE
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publicObject load(finalClass entity, iJzBd7
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finalSerializable id){ ab6I*DbF
return getHibernateTemplate().load ''nOXl
} k2Q
(entity, id); VfcIR(
} LCB-ewy#E
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publicObject get(finalClass entity, -uYxc=4Lh
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finalSerializable id){ : "85w#r
return getHibernateTemplate().get s)E \
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(entity, id); O%EA,5U.
} JIyS e:p3
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publicList findAll(finalClass entity){ E#J})cPzw
return getHibernateTemplate().find("from f!'i5I]
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" + entity.getName()); @"7S$@cO
} $XF$ n#ua
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publicList findByNamedQuery(finalString 2o SM|
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namedQuery){ h5P_kZJ
return getHibernateTemplate ;XN|dq
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().findByNamedQuery(namedQuery); P6v ANL-B
} { M**a
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publicList findByNamedQuery(finalString query, E=8'!
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finalObject parameter){ 83vMj$P
return getHibernateTemplate i;O_B5
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().findByNamedQuery(query, parameter); r)^sHpK:`
} : B^"V\WE
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publicList findByNamedQuery(finalString query, 0-Mzb{n5
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finalObject[] parameters){ `\UY5n72
return getHibernateTemplate ]E/0iM5
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().findByNamedQuery(query, parameters); Pe_O(
} ,jY:@<n
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publicList find(finalString query){ .!o]oM
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return getHibernateTemplate().find N68mvBe
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(query); hZJ~zx~
} ?EFRf~7JP
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publicList find(finalString query, finalObject e0`z~z]6&
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parameter){ q<:8{Y|
return getHibernateTemplate().find q A .9X4NQ
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(query, parameter); ]RT
} s47R,K$
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public PaginationSupport findPageByCriteria
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(final DetachedCriteria detachedCriteria){ /QQRy_Z1)
return findPageByCriteria $?56 i4
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); ~(R=3
} 5 bI:xL}
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public PaginationSupport findPageByCriteria `58% &3lp
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(final DetachedCriteria detachedCriteria, finalint z8X7Y
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startIndex){ n6oOknCna
return findPageByCriteria A)U"F&tvm
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(detachedCriteria, PaginationSupport.PAGESIZE, #tV1?q
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startIndex); Gn2{C%
} m!xvWqY+
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public PaginationSupport findPageByCriteria "-&K!Vfs
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(final DetachedCriteria detachedCriteria, finalint Vgj#-7bdyi
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