Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 K\]ey;Bd
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 5>'1[e45
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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 Fn~?YN
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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 A!Ls<D.
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分页支持类: FF"`F8-w>Z
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java代码: *MFsq}\ $
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package com.javaeye.common.util; s5TPecd
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import java.util.List; ,nELWzz%{
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publicclass PaginationSupport { pZ,P_?
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publicfinalstaticint PAGESIZE = 30; jz_\B(m9%
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privateint pageSize = PAGESIZE; \?_eQKiZ3
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privateList items; )r#^{{6[v
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privateint totalCount; 8Ilg[Drj*
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privateint[] indexes = newint[0]; Wv]NFHe#
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privateint startIndex = 0; AK/_^?zA s
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public PaginationSupport(List items, int <B*}W2\
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totalCount){ zice0({iJ
setPageSize(PAGESIZE); C~.7m-YW
setTotalCount(totalCount); Htseu`>_$
setItems(items); XAV|xlfm
setStartIndex(0); 6_a42#
} gOpGwpYZ,
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public PaginationSupport(List items, int G!J{$0.
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totalCount, int startIndex){ HY.??
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setPageSize(PAGESIZE); +SGM3tY
setTotalCount(totalCount); iol.RszlZ|
setItems(items); cNzn2-qv
setStartIndex(startIndex); D&f(h][hH?
} A`|OPi)
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public PaginationSupport(List items, int $F!)S
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totalCount, int pageSize, int startIndex){ ULq#2l
setPageSize(pageSize); ~l~ai>/
setTotalCount(totalCount); je6H}eWTC6
setItems(items); %a;N)1/
setStartIndex(startIndex); Ij_Y+Mnl4:
} >E&mNp
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publicList getItems(){ kK]JN
return items; i?uJ<BdU[
} Z}(,OZh
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publicvoid setItems(List items){ ?Xscc mN
this.items = items; "wi=aV9j
} okx~F9
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publicint getPageSize(){ {FO>^~>l
return pageSize; w)o^?9T
} XkZ82w#b
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publicvoid setPageSize(int pageSize){ gbOd(ugH
this.pageSize = pageSize; ", b}-B
} ZOGH.`
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publicint getTotalCount(){ PYDf|S7
return totalCount; iGmBG1a\
} ]K'iCYY
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publicvoid setTotalCount(int totalCount){ L
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if(totalCount > 0){ MsMNP[-l
this.totalCount = totalCount; A+d&aE}3V
int count = totalCount / ` z<k7ig
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pageSize; V3&_ST
if(totalCount % pageSize > 0) Gj]*_"T
count++; 5/<?Y&x
indexes = newint[count]; 6T>e~<^
for(int i = 0; i < count; i++){ c`w YQUg(
indexes = pageSize * N:Yjz^Jt
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} |T: 'G
}else{ 4J3cQ;z
this.totalCount = 0; i;!#:JX
} )0Av:eF-+
} a>jiq8d]4
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publicint[] getIndexes(){ _MfXN$I?}
return indexes; z>$AZ>t%J$
} 1:S75~b-`
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publicvoid setIndexes(int[] indexes){ 5!Y51R^c
this.indexes = indexes; P+r-t8
} Ht.0ug
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publicint getStartIndex(){ gZQ,br*
return startIndex; HhkubG)\
} 3#7D
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publicvoid setStartIndex(int startIndex){ 5nL,sFd
if(totalCount <= 0) e>W}3H5w0
this.startIndex = 0; %,Fx qw
elseif(startIndex >= totalCount) NWCJ|
this.startIndex = indexes z>HeM
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[indexes.length - 1]; C]{:>= K
elseif(startIndex < 0) s UX%{|T_
this.startIndex = 0; V 4Y w"J
else{ z Qtg]@S
this.startIndex = indexes u'"VbW3u n
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[startIndex / pageSize]; ^b-o
} !Oj].
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} {L 7O{:J
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publicint getNextIndex(){ kqJ\kd
int nextIndex = getStartIndex() + 9(`d
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pageSize; 78't"2>
if(nextIndex >= totalCount) Y>}[c
return getStartIndex(); f"emH
else Z>GqLq\`ed
return nextIndex; % j4
} VFLxxFJ
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publicint getPreviousIndex(){ go^?F-
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int previousIndex = getStartIndex() - V>
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pageSize; 0'ha!4h3Z
if(previousIndex < 0) Q9v
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return0; |y+<|fb,a
else =?Y%w%2
return previousIndex;
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} NbPv>/r
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} {%WQQs
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抽象业务类 Z]H`s{3
java代码: ,'~8{,h5
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/** SM3Q29XIw
* Created on 2005-7-12 SF?Ublc!
*/ l (;~9u0sa
package com.javaeye.common.business; }:NE
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import java.io.Serializable; `Mj>t(
import java.util.List; &_mOw.
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import org.hibernate.Criteria; #:E}Eby/6I
import org.hibernate.HibernateException; O>P792)
import org.hibernate.Session; l;TWs_N
import org.hibernate.criterion.DetachedCriteria; u,]?_bK)
import org.hibernate.criterion.Projections; :by EXe;3
import G&P[n8Z$
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org.springframework.orm.hibernate3.HibernateCallback; |etA2"r&
import ,^]yU?eU
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org.springframework.orm.hibernate3.support.HibernateDaoS LQy`,-&
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upport; .Sz<%d7XIQ
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import com.javaeye.common.util.PaginationSupport; g=8}G$su{%
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public abstract class AbstractManager extends njO5 YYOu
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HibernateDaoSupport { >Q159qZ
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privateboolean cacheQueries = false; Mp8BilH-T
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privateString queryCacheRegion; VK7lm|J+
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publicvoid setCacheQueries(boolean 9?4EM^-
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cacheQueries){ %<4ZU!2L
this.cacheQueries = cacheQueries; u$A*Vsmr
} 3zV{cm0
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publicvoid setQueryCacheRegion(String _FG?zE
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queryCacheRegion){ ~,199K#'
this.queryCacheRegion = '"#W!p
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queryCacheRegion; Rd 4
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} Z?IwR
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publicvoid save(finalObject entity){ jrOqspv
getHibernateTemplate().save(entity); .fZ*N/
} ups]k?4
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publicvoid persist(finalObject entity){ }ioHSkCD
getHibernateTemplate().save(entity); _]g?3Gw7!
} bV'^0(Zv
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publicvoid update(finalObject entity){ D #<)q)
getHibernateTemplate().update(entity); g;|3n&
} ]<9KX} B
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publicvoid delete(finalObject entity){ ,-55*Rb i
getHibernateTemplate().delete(entity); ;rD
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} ZS@ Gt
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publicObject load(finalClass entity, h3}gg@Fm
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finalSerializable id){ L)0j&
return getHibernateTemplate().load 9e`.H0
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(entity, id); BCrX>Pp}r
} {C% #r@6
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publicObject get(finalClass entity, o~
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finalSerializable id){ k|Xxr
return getHibernateTemplate().get X =sC8E dx
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(entity, id); @xO?SjH
} f3g#(1
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publicList findAll(finalClass entity){ T7wy{;
return getHibernateTemplate().find("from x]1G u
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" + entity.getName()); n$jOk
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} & o2F4
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publicList findByNamedQuery(finalString AGH7z
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namedQuery){ AU3Ou5
return getHibernateTemplate k|ol+
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().findByNamedQuery(namedQuery); xh7[{n[;
} 4 ^=qc99
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publicList findByNamedQuery(finalString query, `u. /2]n
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finalObject parameter){ 01/?
return getHibernateTemplate UL46%MFQ\
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().findByNamedQuery(query, parameter); 8Wa&&YTB
} 3eq VY0q
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publicList findByNamedQuery(finalString query, S$=e %c
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finalObject[] parameters){ bZ/4O*B
return getHibernateTemplate d%"?^e
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().findByNamedQuery(query, parameters); &$'=SL(Z
} k:+Bex$g
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publicList find(finalString query){ w""5T|
return getHibernateTemplate().find BUuU#e5
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(query); V4('}Q!
} Gk.;<d
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publicList find(finalString query, finalObject !PaDq+fB
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parameter){ ]^='aQ
return getHibernateTemplate().find
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(query, parameter); E!a5-SrR
} K?y!zy
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public PaginationSupport findPageByCriteria `=]I-5#.W
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(final DetachedCriteria detachedCriteria){ lL*k!lNs
return findPageByCriteria .kBZ(`K
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); lS`hJ:
} ;'\{T#5)
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public PaginationSupport findPageByCriteria yM3]<~m
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(final DetachedCriteria detachedCriteria, finalint ?0UzmJV?8
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startIndex){ aB`x5vg7ho
return findPageByCriteria =uZOpeviQ
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(detachedCriteria, PaginationSupport.PAGESIZE, ,{@,dw`lUz
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startIndex); ] M"l-A
} Ax#$z
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public PaginationSupport findPageByCriteria %"R|tlG
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(final DetachedCriteria detachedCriteria, finalint Az_s"}G
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pageSize, J%?'Q{
finalint startIndex){ OzFA>FK0f;
return(PaginationSupport) t^h{D
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getHibernateTemplate().execute(new HibernateCallback(){ mdu5aL
publicObject doInHibernate N
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(Session session)throws HibernateException { XDvT#(Pu
Criteria criteria = <tZPS`c'_
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detachedCriteria.getExecutableCriteria(session); `F:PWG`
int totalCount = p1 tfN$-
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((Integer) criteria.setProjection(Projections.rowCount Z7&Bn