Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 dFd^@b
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 _^)Wrf+
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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 ,&DK*LT8U
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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 ElAho3W
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分页支持类: 73-*|@6
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java代码: (1
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package com.javaeye.common.util; 3'd(=hJ45$
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import java.util.List; pJ` M5pF
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publicclass PaginationSupport { [j6EzMN
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publicfinalstaticint PAGESIZE = 30; yGNZw7^(
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privateint pageSize = PAGESIZE; 1]yOC)u"i
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privateList items; F{#m~4O
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privateint totalCount; Ywj=6 +;
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privateint[] indexes = newint[0]; 7x/S4Gs'4
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privateint startIndex = 0; -BY'E$]4
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public PaginationSupport(List items, int ^2gDhoO_
)KZ1Z$<
totalCount){ &1O!guq%
setPageSize(PAGESIZE); |-WoR u
setTotalCount(totalCount); S?X2MX
setItems(items); hEO#uAR^Z
setStartIndex(0); ]!u12^A{
} 59?@55
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public PaginationSupport(List items, int %X)i-^T
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totalCount, int startIndex){ ?;{fqeJz
setPageSize(PAGESIZE); 'Zq$W]i
setTotalCount(totalCount); s m42
setItems(items); '~dE0ohWb
setStartIndex(startIndex); 64Ot`=A"
} .U8Se+;
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public PaginationSupport(List items, int ;5wmQFr
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totalCount, int pageSize, int startIndex){ J`6X6YZ
setPageSize(pageSize); -29Sw
setTotalCount(totalCount); ; Nw.
setItems(items); |E\0Rv{H3
setStartIndex(startIndex); /PP\L](
} V:M$-6jv
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publicList getItems(){ 5lp
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return items; L*ZC`
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} {x{/{{wzv
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publicvoid setItems(List items){ /h4 ::,
this.items = items; pRsYA7Ti
} <Sxsmf0"
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publicint getPageSize(){ ]J^9iDTTA
return pageSize; .s4hFB^n
} U] 2fV|Hn
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publicvoid setPageSize(int pageSize){ r]x;JBy
this.pageSize = pageSize;
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} B]PTe~n^
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publicint getTotalCount(){ zj!&12w%3
return totalCount; #A8d@]Ps
} Cdjh/+!f
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publicvoid setTotalCount(int totalCount){ V?g@pnN"
if(totalCount > 0){ >Z#=<
this.totalCount = totalCount; Wsn}Y-x
int count = totalCount / RP]hW{:U
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pageSize; 0phO1h]2S)
if(totalCount % pageSize > 0) } z4=3'
count++; UOn
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indexes = newint[count]; qp(F}@
for(int i = 0; i < count; i++){ -.A8kJ
indexes = pageSize * p100dJvq
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} c5uT'P"
}else{ {}?;|&_
this.totalCount = 0; 0A%>'<
} Gt&x<
} o.tCw\M$g
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publicint[] getIndexes(){ NIeKS_ +
return indexes; !HA[:-JCz
} ;!<WL@C~
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publicvoid setIndexes(int[] indexes){ aq[ ;[$w
this.indexes = indexes; m1 78S3
} S7-ka{S
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publicint getStartIndex(){ Jtj_Rl
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return startIndex; W_EM
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} )hH9VGZq(
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publicvoid setStartIndex(int startIndex){ w=I'
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if(totalCount <= 0) wj>mk
this.startIndex = 0; aa<9%j
elseif(startIndex >= totalCount) ~Mv@Bl
this.startIndex = indexes 6KiI3%y?0
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[indexes.length - 1]; T ,,
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elseif(startIndex < 0) DPvM|n`TW
this.startIndex = 0; Bcx-t)[
else{ n{F$,a
this.startIndex = indexes ~mc7O
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[startIndex / pageSize]; q<>
} W G2 E3y
} ![WX -"lW
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publicint getNextIndex(){ ! /Z{uy
int nextIndex = getStartIndex() + V\zf yH\~
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pageSize; 37)Dx
if(nextIndex >= totalCount) ^5TSo&qZ
return getStartIndex(); >_QC_UX>4i
else 3 $;6pY
return nextIndex; 7<[p1C*B
} H{'<v|I
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publicint getPreviousIndex(){ y@[}FgVOh
int previousIndex = getStartIndex() - bkkhx,Oi[G
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pageSize; H4LZNko
if(previousIndex < 0) W=M`Bkw{
return0; b:.aZ7+4
else ;bVC7D~~4w
return previousIndex; 'v^CA}
} v8"plx=3
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} I*R[8|
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抽象业务类 Z]l<,m
java代码: 4g]Er<-P
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/** Ed9ynJ~)X
* Created on 2005-7-12 FX7=81**4
*/ Vh^fbv`?
package com.javaeye.common.business; 3DnlXH(h1
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import java.io.Serializable; <`*}$Zh
import java.util.List; j<>|Hi
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import org.hibernate.Criteria; !)RND 6.
import org.hibernate.HibernateException; +8 5]]}I
import org.hibernate.Session; $8o(_8Q)
import org.hibernate.criterion.DetachedCriteria; Etty{r}
import org.hibernate.criterion.Projections; a'f"Zdh%w
import ;>_\oZGj_
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org.springframework.orm.hibernate3.HibernateCallback; S?n k9T+
import
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org.springframework.orm.hibernate3.support.HibernateDaoS w\k|^
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upport; zQ9"i
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import com.javaeye.common.util.PaginationSupport; -_Pd d[M
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public abstract class AbstractManager extends o9G%KO&;D,
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HibernateDaoSupport { 0F-X.Dq
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privateboolean cacheQueries = false; S!<YVQq
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privateString queryCacheRegion; |t*(]U2O0
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publicvoid setCacheQueries(boolean n"8vlNeW
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cacheQueries){ 5=tvB,Ux4
this.cacheQueries = cacheQueries; 3TqC.S5+
} F,Q\_H##x4
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publicvoid setQueryCacheRegion(String D"0:n.
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queryCacheRegion){ [2#5;')
this.queryCacheRegion = )z-)S
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queryCacheRegion; CI"7* z_
} "OF4#a17
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publicvoid save(finalObject entity){ :8aa #bA
getHibernateTemplate().save(entity); ^%|,G:r
} OQMkpX-dH
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publicvoid persist(finalObject entity){ ,#[0As29u
getHibernateTemplate().save(entity); zY~
} )o)<5Iqh
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publicvoid update(finalObject entity){ bh|M]*Pq
getHibernateTemplate().update(entity); :;W[@DeO[
} &v|Uy}h&%1
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publicvoid delete(finalObject entity){ {Vw+~8
getHibernateTemplate().delete(entity); :)VO,b~r
} YXI_ '
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publicObject load(finalClass entity, 6yk=4l\
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finalSerializable id){ -V0_%Smc
return getHibernateTemplate().load g^|}e?
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(entity, id); I^"ouM9}Q
} 't:$Lx
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publicObject get(finalClass entity, -4ry)isYx
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finalSerializable id){ 0/K?'&$yvb
return getHibernateTemplate().get abiZ"?(
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(entity, id); ;6S,|rC]
} XN9s!5A<L)
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publicList findAll(finalClass entity){ su;u_rc,
return getHibernateTemplate().find("from R<.<wQ4I
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" + entity.getName()); m(CW3:|
} j1{|3#5V
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publicList findByNamedQuery(finalString 3FRz&FS:j
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namedQuery){ -]""Jl^
return getHibernateTemplate Zjis0a]v~k
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().findByNamedQuery(namedQuery); kQ~2mU
} {!!df.h
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publicList findByNamedQuery(finalString query, $A~UA
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finalObject parameter){ GL;@heP
return getHibernateTemplate y/=:F=H@w
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().findByNamedQuery(query, parameter); Z]?Tx2|7
} N(i%Oxp1
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publicList findByNamedQuery(finalString query, \:]
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finalObject[] parameters){ "XPBNv\>_
return getHibernateTemplate ,b[}22
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().findByNamedQuery(query, parameters); l{b<rUh5W
} s18o,Zs'
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publicList find(finalString query){ fH#yJd2?f
return getHibernateTemplate().find :QKxpHi
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(query); fM,!9}<
} e7e6b-"_2
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publicList find(finalString query, finalObject N>h/!#
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parameter){ ,TeJx+z^
return getHibernateTemplate().find )Ve-) rZ
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(query, parameter); ?%RAX CK
} be&5vl
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public PaginationSupport findPageByCriteria 6Gt~tlt:L
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(final DetachedCriteria detachedCriteria){ VnlgX\$}
return findPageByCriteria )ph**g
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); /V'^$enK!}
} U@t"o3E
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public PaginationSupport findPageByCriteria /|7@rH([{
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(final DetachedCriteria detachedCriteria, finalint R7)\wP*l5
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startIndex){ E :gS*tsY
return findPageByCriteria w+A:]SU
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(detachedCriteria, PaginationSupport.PAGESIZE, 0e./yPTT
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startIndex);
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} 05sWN 0
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public PaginationSupport findPageByCriteria 1XfH,6\8i
{u !Q=D$3
(final DetachedCriteria detachedCriteria, finalint Yz<,`w5/6~
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pageSize, nP]tc
finalint startIndex){ Q?"o.T';
return(PaginationSupport) IZ){xI
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getHibernateTemplate().execute(new HibernateCallback(){ +Dvdv<+
publicObject doInHibernate q%H`/~AYM
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(Session session)throws HibernateException { N5W;Zx]
Criteria criteria = "n<rP 3y
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detachedCriteria.getExecutableCriteria(session); u_kcuN\Sq
int totalCount = ZD$W>'m{F
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((Integer) criteria.setProjection(Projections.rowCount 8]SJ=c"}Xf
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()).uniqueResult()).intValue(); $O\I9CGr$
criteria.setProjection D8S?xK 7[
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(null); bIvF5d>9#K
List items = P<.
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criteria.setFirstResult(startIndex).setMaxResults $x5,Oe n
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(pageSize).list(); "o| f
PaginationSupport ps = *HT)Au"5
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new PaginationSupport(items, totalCount, pageSize, v~l_6V}
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startIndex); F'v3caE
return ps; 3Jt7IM!9[
} B~%'YQk
}, true); O?p8Gjf
} [H~Yg2O
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public List findAllByCriteria(final M-#OPj*
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DetachedCriteria detachedCriteria){ UU7E+4O&
return(List) getHibernateTemplate ,H_b@$]n8
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().execute(new HibernateCallback(){ dwH8Zg$B
publicObject doInHibernate EnM }H9A
7@[HRr
(Session session)throws HibernateException { b 8vyJb,K
Criteria criteria = <yoCW?#
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detachedCriteria.getExecutableCriteria(session); pCB^\M%*
return criteria.list(); |UudP?E
} )aV\=a |A
}, true); .5S< G)Ja
} X0QY:?
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public int getCountByCriteria(final A`5/u"]*D
: ~RY
DetachedCriteria detachedCriteria){ ;^[VqFpeS
Integer count = (Integer) RJYB=y8l
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getHibernateTemplate().execute(new HibernateCallback(){ +vDEDOS1
publicObject doInHibernate Mk3~%`
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(Session session)throws HibernateException { cC4 2b2+
Criteria criteria = _mEW]9Sp
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detachedCriteria.getExecutableCriteria(session); 3d1$w
return =7e|e6
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criteria.setProjection(Projections.rowCount p aQ"[w
nDFF,ge;a#
()).uniqueResult(); -(Zi
} '\,|B
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}, true); tx+KxOt9Y
return count.intValue(); 5PcN$r"P
} &