Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 _u""v
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 |)xWQ KzA
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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 2
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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 E7i/gY
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分页支持类: ~+d{:WY
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java代码: [NJ2rQ/w7
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package com.javaeye.common.util; RX%)@e/@
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import java.util.List; $0x+b!_l@
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publicclass PaginationSupport { O8A(OfX
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publicfinalstaticint PAGESIZE = 30; +=Q:g,kP
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privateint pageSize = PAGESIZE; .%dGSDru
pacD7'1{
privateList items; Pr>05lg
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privateint totalCount; BeLqk3'/
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privateint[] indexes = newint[0]; #>HY+ ;
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privateint startIndex = 0; *iY:R
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public PaginationSupport(List items, int yY!)2{F+
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totalCount){ /_HTW\7,
setPageSize(PAGESIZE); 0 'THL%lK
setTotalCount(totalCount); <KK.f9^o(
setItems(items); u,nn\>Y
setStartIndex(0); ES!e/l
} GRJ6|T$!?$
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public PaginationSupport(List items, int E%;$vj'2
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totalCount, int startIndex){ ,;5%&T
setPageSize(PAGESIZE); mn=b&{')e
setTotalCount(totalCount); oH&@F@r:+
setItems(items); eub}+~_?[
setStartIndex(startIndex); [mQ1r*[j
} si)>:e
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public PaginationSupport(List items, int *!TQC6b$
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totalCount, int pageSize, int startIndex){ !s^XWsb8
setPageSize(pageSize); z. X
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setTotalCount(totalCount); M9o/6
setItems(items); oK-d58 sM
setStartIndex(startIndex); %'i_iF8.
} CbW[_\
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publicList getItems(){ '_V9FWDZ
return items; lyFlJm i,r
} ~OsLbz:
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publicvoid setItems(List items){ PYWFz
this.items = items; 2HSFMgy
} i$p2am8f
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publicint getPageSize(){ k!z<=WA
return pageSize; ja~Dp5
} u=qaz7E
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publicvoid setPageSize(int pageSize){ /O.Ql,6[
this.pageSize = pageSize; rQlQ^W$=?
} +TA~RCd
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publicint getTotalCount(){ v4Rci^ 8
return totalCount; t_xK?``
} M*qE)dZjS
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publicvoid setTotalCount(int totalCount){ 3) d}3w {
if(totalCount > 0){ N?-ZvE\C
this.totalCount = totalCount; n{<}<SVY
int count = totalCount / y\uBVa<B
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pageSize; 3M+rFB}tS
if(totalCount % pageSize > 0) &L5
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count++; XEbVsw
indexes = newint[count]; 0,)2\`99#k
for(int i = 0; i < count; i++){ VD@$y^!H
indexes = pageSize * <uS/8MP{
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i; 0SWqC@AR%
} G/FDD{y
}else{ uq-`1m}
this.totalCount = 0; CJCxL\
} WkE="E}
} Li|~%E1
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publicint[] getIndexes(){ YkMFU'?[
return indexes; 0Fon`3(^\
} \-]tvgA~&
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publicvoid setIndexes(int[] indexes){ H"^9g3U
this.indexes = indexes; f OR9 N/
} u&c%L0)E&
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publicint getStartIndex(){ T(Q ~b
return startIndex; I<sUB4T>#W
} wT- <#+L\
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publicvoid setStartIndex(int startIndex){ J
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if(totalCount <= 0) l3ogMRq@
this.startIndex = 0; Kw;gQk~R!
elseif(startIndex >= totalCount) "0Z/|&
this.startIndex = indexes =y@0il+V
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[indexes.length - 1]; ,{S $&g*
elseif(startIndex < 0) "ldd&><
this.startIndex = 0; 4v_Hh<%
else{ O9d"Z$~n=j
this.startIndex = indexes f 42F@M(:
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[startIndex / pageSize]; wG7>2*(
} @ :PMb Ub
} :x[()J~N
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publicint getNextIndex(){ Mb[4_Dc
int nextIndex = getStartIndex() + @$^4Av-
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pageSize; 5EVypw?]x
if(nextIndex >= totalCount) hZ>m:es
return getStartIndex(); KWjhkRK4]
else g9JZ#B gZ
return nextIndex; <EgJm`V
} {_*G"A 9
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publicint getPreviousIndex(){ \xggIW.^0
int previousIndex = getStartIndex() - |;~2y>E
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pageSize; p&Qm[!
if(previousIndex < 0) `5h^!="
return0; HH7WMYoKY
else WxO+cB+?
return previousIndex; X>uLGr>
} |O>e=HC#q8
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} gt.F[q3
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抽象业务类 DjN1EP\Xx
java代码: M \k[?i
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/** y0T#Qq
* Created on 2005-7-12 ?qSwV.l]d
*/ t CO?<QBE
package com.javaeye.common.business; 1Dhe!
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import java.io.Serializable; ke;=Vg|
import java.util.List; Z:AB(c
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import org.hibernate.Criteria; nt()UC`5
import org.hibernate.HibernateException; $MQ<QP
import org.hibernate.Session; /{[<J<(8
import org.hibernate.criterion.DetachedCriteria; {.e+?V2>_
import org.hibernate.criterion.Projections; '/\*l<
import '&,p>aM
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org.springframework.orm.hibernate3.HibernateCallback; Twd*HH
import ?0KIM*
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org.springframework.orm.hibernate3.support.HibernateDaoS V3cKdlu Na
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upport; y>E:]#F
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import com.javaeye.common.util.PaginationSupport; `kvIw,c.
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public abstract class AbstractManager extends LVdR,'lS
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HibernateDaoSupport { PIo@B|W-SX
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privateboolean cacheQueries = false; m='}t \=
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privateString queryCacheRegion; 0',buJncV
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publicvoid setCacheQueries(boolean g)$KN,gGuO
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cacheQueries){ (X\]! 'A
this.cacheQueries = cacheQueries; :
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} L?|}!
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publicvoid setQueryCacheRegion(String 1fIx@
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queryCacheRegion){ )hQ]>o@i{
this.queryCacheRegion = #*y.C[^5{
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queryCacheRegion; Z]DZ:dF
} e>c
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publicvoid save(finalObject entity){ ?<N} Xh
getHibernateTemplate().save(entity); I2RXw
} l8+)Xk>
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publicvoid persist(finalObject entity){ hPz=Ec<zW
getHibernateTemplate().save(entity); xgkCN$zQ`
} V{q*hQd_3
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publicvoid update(finalObject entity){ i={4rZOD^
getHibernateTemplate().update(entity); ZDp^k{AN9a
} WW6-oQs_#*
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publicvoid delete(finalObject entity){ k%Tp9x$
getHibernateTemplate().delete(entity); 2TB'HNTFx
} |"%OI~^%
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publicObject load(finalClass entity, E.Th}+
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finalSerializable id){ #m<uG5l`
return getHibernateTemplate().load '4#NVXVQm
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(entity, id); &3"ODAp'
} 7\yh(+ kN
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publicObject get(finalClass entity, ,ZY\})`p
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finalSerializable id){ LfW:G5@-
return getHibernateTemplate().get q&?hwX
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(entity, id); $ `\qY ^.(
} :a2[d1
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publicList findAll(finalClass entity){ nr&|
return getHibernateTemplate().find("from wexX|B^u
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" + entity.getName()); II _CT=
} {%k[Z9*tO
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publicList findByNamedQuery(finalString f9Xa}*
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namedQuery){ wxJ"{(;
return getHibernateTemplate [hH>BEtm
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().findByNamedQuery(namedQuery); kxyOe[7 S
} 8q6Le{G
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publicList findByNamedQuery(finalString query, $39TP@?:Z)
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finalObject parameter){ Lh-Y5(c
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return getHibernateTemplate SCMvq?9
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().findByNamedQuery(query, parameter); V(LfFO{^>?
} daSx^/$R
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publicList findByNamedQuery(finalString query, W]bytsl
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finalObject[] parameters){ D(|+z-}M
return getHibernateTemplate N`H`\+
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().findByNamedQuery(query, parameters); M
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} L$!2<eK
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publicList find(finalString query){ jJvd!,=)
return getHibernateTemplate().find D_ej%QtB@
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(query); HL$7Ou
} p(4B"[ !S
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publicList find(finalString query, finalObject ?kV_!2U)'K
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parameter){ ';.y`{/
return getHibernateTemplate().find }c=Y<Cdh
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(query, parameter); /?Y4C)G
} w&es N$2
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public PaginationSupport findPageByCriteria s{X+0_@Q
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(final DetachedCriteria detachedCriteria){ Dh#5-Kf%
return findPageByCriteria 4y5Q5)j
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); b 5K"lPr
} g~9rt_OV
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public PaginationSupport findPageByCriteria mxJe\[I
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(final DetachedCriteria detachedCriteria, finalint ?/,V{!UTtq
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startIndex){ h5aPRPU g
return findPageByCriteria gth_Sz5!#
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(detachedCriteria, PaginationSupport.PAGESIZE, =\i%,YY
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startIndex); @'hkU$N)
} 6Qz=g
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public PaginationSupport findPageByCriteria ;8e}X6YU
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(final DetachedCriteria detachedCriteria, finalint /yUKUXi
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pageSize, (&V*~OR
finalint startIndex){ tv`c"Pb
return(PaginationSupport) z([HGq5
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getHibernateTemplate().execute(new HibernateCallback(){ LKZ<\%
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publicObject doInHibernate %|R]nB
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(Session session)throws HibernateException { r@'~cF]m
Criteria criteria = 0f3>s>`M
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detachedCriteria.getExecutableCriteria(session); (otD4VR_
int totalCount = T| (w-)mv
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((Integer) criteria.setProjection(Projections.rowCount G2>s#Y5(,
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()).uniqueResult()).intValue(); m*7RC4"J
criteria.setProjection C4-%|+Q i
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(null); qI74a F
List items = Pum&