Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Hx}K
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ?/mk FDN
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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 (BtavE
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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 {x{/{{wzv
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分页支持类: IAr
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java代码: SZOcFmC?
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package com.javaeye.common.util; `={s*^Ta
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import java.util.List; U @Il:\I
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publicclass PaginationSupport { -+1it
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publicfinalstaticint PAGESIZE = 30; zE{@'
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privateint pageSize = PAGESIZE; )7mX]@
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privateList items; GW]E,a
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privateint totalCount; 2#4_/5(j*
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privateint[] indexes = newint[0]; @`:n +r5u
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privateint startIndex = 0; W)"PYC4
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public PaginationSupport(List items, int h+mM
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totalCount){ e&dE>m
setPageSize(PAGESIZE); 7s%DM6li 6
setTotalCount(totalCount); \Nc/W!r*9
setItems(items); ;!4Bw"Gg
setStartIndex(0); zr9o
} ||y5XXs
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public PaginationSupport(List items, int b _fI1f|
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totalCount, int startIndex){ EG5'kYw2
setPageSize(PAGESIZE); G| pZ
setTotalCount(totalCount); 0N3 cC4!
setItems(items); s8| =1{
setStartIndex(startIndex); >;',U<Wd
} ;dl>
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public PaginationSupport(List items, int Dm/# \y3
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totalCount, int pageSize, int startIndex){ :.!]+#Me
setPageSize(pageSize); .3Nd[+[
setTotalCount(totalCount); dzZ74FE!t
setItems(items); o+W5xHe^1
setStartIndex(startIndex); QRj><TKi
} .op:
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publicList getItems(){ @SA*7[?P
return items; I]P'wav~O
} q10gKVJum
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publicvoid setItems(List items){ ^yUel.N5"
this.items = items; W)jO 4,eO
} mH>oF|
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publicint getPageSize(){ &^e%gU8!\
return pageSize; (OT /o&cQ
} FjIS:9^)t5
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publicvoid setPageSize(int pageSize){ t>|Y-i3cb
this.pageSize = pageSize; /_E8'qlx
} e Ll+F%@
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publicint getTotalCount(){ t4pc2b
return totalCount; e{8z1t20:
} 6>v`6
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publicvoid setTotalCount(int totalCount){ mD-qJ6AM
if(totalCount > 0){ 9;s:Bo
this.totalCount = totalCount; 5Jq~EB{"
int count = totalCount / fk4s19;?
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pageSize; egboLqn
if(totalCount % pageSize > 0) @\v,
count++; /2-S/,a
indexes = newint[count]; v!?bEM3D
for(int i = 0; i < count; i++){ H];|<G
indexes = pageSize * R*IO%9O
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} GwxxW
}else{ |cStN[97%
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publicint[] getIndexes(){ \y^ Od7F
return indexes; F+Rtoq|
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publicvoid setIndexes(int[] indexes){ 'gk.J
this.indexes = indexes; B
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} W-q2|NK
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publicint getStartIndex(){ $,q~ q^0
return startIndex; Htn=h~U`z
} ,~8:^*0s
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publicvoid setStartIndex(int startIndex){ o9ZHa
if(totalCount <= 0) GVk&n"9kp
this.startIndex = 0; 84^'^nd
elseif(startIndex >= totalCount) cjt<&b*
this.startIndex = indexes \#.,@g
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[indexes.length - 1]; sHD8#t^{
elseif(startIndex < 0) u
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this.startIndex = 0; YO7Y1(`
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this.startIndex = indexes BDSZ '
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publicint getNextIndex(){ M*FUtu
int nextIndex = getStartIndex() + P:h;"
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return getStartIndex(); JP`$A
else &C<K|F!j!
return nextIndex; cHOtMPyQ
} MTo<COp($
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publicint getPreviousIndex(){ RY'f%c
int previousIndex = getStartIndex() - _@9[c9bO
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if(previousIndex < 0) AE`X4 q
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else '?dO[iQ$:
return previousIndex; D+ mZ7&L
} 2g~qVT,
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} i'9aQi"G
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抽象业务类 LVKvPi
java代码: 4k/B=%l
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/** !.1oW(
* Created on 2005-7-12 ^Pl(V@
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package com.javaeye.common.business; 3/c3e{,!
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import java.io.Serializable; li'h&!|]
import java.util.List; c'cK+32
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import org.hibernate.Criteria; mM&Sq;JJ;
import org.hibernate.HibernateException; [8|Y2Z\N
import org.hibernate.Session; ~!UC:&UKo
import org.hibernate.criterion.DetachedCriteria; ws8@yr<R
import org.hibernate.criterion.Projections; abiZ"?(
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org.springframework.orm.hibernate3.HibernateCallback; _5TSI'@.4
import V/|).YG2
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org.springframework.orm.hibernate3.support.HibernateDaoS wK OljE6d
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upport; yUV0{A-q{0
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import com.javaeye.common.util.PaginationSupport; ~C[p}MED
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public abstract class AbstractManager extends Xi$( U8J_
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HibernateDaoSupport { n@5Sp2p
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privateboolean cacheQueries = false; S(NH# ^
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privateString queryCacheRegion; :})(@.H
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publicvoid setCacheQueries(boolean m$<LO%<~p
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cacheQueries){ MKVz'-`u
this.cacheQueries = cacheQueries; tGt/=~n9
} iMG)zPj
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publicvoid setQueryCacheRegion(String ^(z7?T
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queryCacheRegion){ 8vQGpIa,
this.queryCacheRegion = \H<gKZquR
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queryCacheRegion; - 7MR2)U
} wEju`0#;
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publicvoid save(finalObject entity){ 8A q [@i
getHibernateTemplate().save(entity); 5)h#NkA\J
} &L7u//
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publicvoid persist(finalObject entity){ B
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getHibernateTemplate().save(entity); $t*>A+J
} |-Rg].
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publicvoid update(finalObject entity){ fP 1V1ao
getHibernateTemplate().update(entity); vTnrSNdSE
} (Hk4~v6pqC
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publicvoid delete(finalObject entity){ '{]1!yMh
getHibernateTemplate().delete(entity); E/bIq}R6
} K:!){a[
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publicObject load(finalClass entity, =BD} +(3
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finalSerializable id){ s
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return getHibernateTemplate().load Y~I$goT
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publicObject get(finalClass entity, LDg"s0n#
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return getHibernateTemplate().get "53'FRj_\
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} -NzO ,?
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publicList findAll(finalClass entity){
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return getHibernateTemplate().find("from }"}
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} W&M=%
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publicList findByNamedQuery(finalString N$'/J-^
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namedQuery){ Q1ox<-
return getHibernateTemplate 7RXTQ9BS
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().findByNamedQuery(namedQuery); \VY!= 9EV
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publicList findByNamedQuery(finalString query, PK&3nXF%4
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finalObject parameter){ By3y.}'Ub9
return getHibernateTemplate X?6E0/r&9
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publicList findByNamedQuery(finalString query, O$dcy!
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finalObject[] parameters){
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return getHibernateTemplate iJ8 5okv'
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().findByNamedQuery(query, parameters); 0P MF)';R
} "zN2+X"&
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publicList find(finalString query){ Z)V m,ng
return getHibernateTemplate().find [G.4S5FX.]
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(query); M<Gr~RKmAn
} V)pn)no'V
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publicList find(finalString query, finalObject m7~<z>5$
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parameter){ |6qxRWT"
return getHibernateTemplate().find 4blw9x N
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(query, parameter); *.'9 eC0s
} KBUClx?
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public PaginationSupport findPageByCriteria .,-,@ZK
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(final DetachedCriteria detachedCriteria){ M-#OPj*
return findPageByCriteria AD$$S.zoD<
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); %1Ex{H hb
} qcNu9Ih
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public PaginationSupport findPageByCriteria &1=Je$,
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(final DetachedCriteria detachedCriteria, finalint b 8vyJb,K
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startIndex){ J
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return findPageByCriteria p"xti+2,
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(detachedCriteria, PaginationSupport.PAGESIZE, Qkk3>{I
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startIndex); n]G_#
;
} <yoCW?#
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public PaginationSupport findPageByCriteria `6R.*hq
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(final DetachedCriteria detachedCriteria, finalint $0kuR!U.N
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pageSize, g6s&nH`Z2
finalint startIndex){ X@["Jjp
return(PaginationSupport) ;s^br17z~
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getHibernateTemplate().execute(new HibernateCallback(){ IInsq
publicObject doInHibernate ].TAZ-4s
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(Session session)throws HibernateException { mQbpv'N
Criteria criteria = [Iwb7a0p
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detachedCriteria.getExecutableCriteria(session); ?(t{VdZSzQ
int totalCount = &N