Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 EZV$1pa
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 +^:K#S9U
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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 HR
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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 Jsl,r+'H
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分页支持类: qZG >FC37
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java代码: &h-1Z}
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package com.javaeye.common.util; 50A_+f.7%
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import java.util.List; X)+N>8o?N
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publicclass PaginationSupport { &-A7%"
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publicfinalstaticint PAGESIZE = 30; g&V.o5jIhc
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privateint pageSize = PAGESIZE; oGZ9@Y)(T
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privateList items; hV)I
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privateint totalCount; ~S9nLb:O{
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privateint[] indexes = newint[0]; {U9jA_XX
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privateint startIndex = 0; ]jYM;e
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public PaginationSupport(List items, int {T9g\F*
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totalCount){ tznT*EQr
setPageSize(PAGESIZE); jWz-7BO
setTotalCount(totalCount); \?ZdUY
setItems(items); 6-~
setStartIndex(0); +Muyp]_
} ;&!l2 UB%
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public PaginationSupport(List items, int /zWWUl`:
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totalCount, int startIndex){ HFazqQ[
setPageSize(PAGESIZE); tkmW\
setTotalCount(totalCount); )Jc>l;G(M
setItems(items); C+Z"0\{o
setStartIndex(startIndex); LuVj9+1 S
} a5iMCmL+
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public PaginationSupport(List items, int y-U(`{[nM
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totalCount, int pageSize, int startIndex){ DCm;dh
setPageSize(pageSize); Z7v~;JzC#
setTotalCount(totalCount); }y1M0^M-$
setItems(items); 'coqm8V[%
setStartIndex(startIndex); yQ}~ aA#h
} &P;x<7h$t?
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publicList getItems(){ I6\3wU~).
return items;
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} aj\'qRrU$
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publicvoid setItems(List items){ jy?^an}#h
this.items = items; nF-FoO98
} ]1K
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publicint getPageSize(){ CY:pYke=
return pageSize; Z#Fw 1
} l@Ki`if
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publicvoid setPageSize(int pageSize){ /X?Nv^Hy
this.pageSize = pageSize;
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publicint getTotalCount(){ -nW{$&5AF
return totalCount; lbPxZ'YO#
} TcC=_je460
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publicvoid setTotalCount(int totalCount){ _FV.}%W<u
if(totalCount > 0){ Rm
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this.totalCount = totalCount; ;ry{cq
int count = totalCount / l*eA
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pageSize; ]8^2(^3ct
if(totalCount % pageSize > 0) %tMfOW
count++; Hq~ 2,#Ue
indexes = newint[count]; U+ 8[Ia(t
for(int i = 0; i < count; i++){ g N[r*:B
indexes = pageSize * x\=h^r#w
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} &`9lIVB,K
}else{ fVkl-<?x
this.totalCount = 0; BK +JHT
} h3:,Gbyap
} ~7m+cWC-+
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publicint[] getIndexes(){ $qvNv[
return indexes; Eg9502Bl~8
} 4 (yHD
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publicvoid setIndexes(int[] indexes){ C{Fo^-3
this.indexes = indexes; sqy5rug
} RPrk]<<1
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publicint getStartIndex(){ 1ID!rxE
return startIndex; `8Om*{xg
} 6hZhD1lDG^
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publicvoid setStartIndex(int startIndex){ TQ BL!w
if(totalCount <= 0) Pa.!:N-
this.startIndex = 0; ^'h~#7s
elseif(startIndex >= totalCount) >3ODqRu
this.startIndex = indexes >hXUq9;:
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[indexes.length - 1]; $OJ*Kul
elseif(startIndex < 0) o%dtf5}(,
this.startIndex = 0; >ko;CQR
else{ ."lY>(HJ
this.startIndex = indexes ED6H
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[startIndex / pageSize]; WgIVhj
} V=c&QPP
} f="}.
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publicint getNextIndex(){ Y}Ov`ZM!r
int nextIndex = getStartIndex() + &8 (2U-
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pageSize; G6
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if(nextIndex >= totalCount) c" l~=1Dr
return getStartIndex(); rUyT5Vf
else )yK!EK\
return nextIndex; Wc)^@f[~<
} w "D"9G
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publicint getPreviousIndex(){ Y8P
int previousIndex = getStartIndex() - $yt|nO
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pageSize; []Z6<rC|
if(previousIndex < 0) 4jXyA/F9V
return0; FPqgncBHK
else $UH_)Q2#J^
return previousIndex; A ^~\
} .OjJK?
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} \&cVcAg
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抽象业务类 |.,yM|
java代码: %=|I;kI?
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/** I5e!vCG)
* Created on 2005-7-12 YRwS{e*u
*/ :c6%;2
package com.javaeye.common.business; fN&O `T>
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import java.io.Serializable; %~eZrG.
import java.util.List; CocvEoE*z
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import org.hibernate.Criteria; @}[)uH
import org.hibernate.HibernateException; u%T.XgY=j
import org.hibernate.Session; s_]rje8`
import org.hibernate.criterion.DetachedCriteria; F'"-4YV>&
import org.hibernate.criterion.Projections; bkY7]'.bz&
import z*R"917
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org.springframework.orm.hibernate3.HibernateCallback; 0/%zXp&m
import Sy8Og] a
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org.springframework.orm.hibernate3.support.HibernateDaoS FY
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import com.javaeye.common.util.PaginationSupport; ZJx:?*0a
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public abstract class AbstractManager extends 2.|Y
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HibernateDaoSupport { 3Y=S^*ztd
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privateboolean cacheQueries = false;
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privateString queryCacheRegion; Hv%a\WNS1
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publicvoid setCacheQueries(boolean } wiq?dr
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cacheQueries){ {}.c.W+
this.cacheQueries = cacheQueries; Z{e5 OJ
} 'SuYNA)
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publicvoid setQueryCacheRegion(String o`&idn|,
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queryCacheRegion){ "=qdBG9
this.queryCacheRegion = Q@M,:0+cy
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queryCacheRegion; ,,i;6q_f
} WjA)0HL(
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publicvoid save(finalObject entity){ &"d4J?io`
getHibernateTemplate().save(entity);
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} ]ao]?=q C
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publicvoid persist(finalObject entity){ x*_c'\F|
getHibernateTemplate().save(entity); )EO$JwQ
} 4YdmG.CU
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publicvoid update(finalObject entity){ :CV&WP
getHibernateTemplate().update(entity); u|Db%)[
} >0f5Mjug
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publicvoid delete(finalObject entity){ VD1*br^,
getHibernateTemplate().delete(entity); KC
} ^^v\ T
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publicObject load(finalClass entity, hLBX,r)u
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finalSerializable id){ (0Y6tcV]R
return getHibernateTemplate().load
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(entity, id); \l#=p+x5
} M34*$>bk
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publicObject get(finalClass entity, u<):gI
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finalSerializable id){ Iy"
return getHibernateTemplate().get y\ouIsI77
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(entity, id); ;Ni+TS
} b`1P%OjC
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publicList findAll(finalClass entity){ E4WoKuE1$
return getHibernateTemplate().find("from @!K)(B;A0b
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" + entity.getName()); n|{x\@VeF
} |3vQmd !2}
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publicList findByNamedQuery(finalString ;o#dmG
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namedQuery){ (3W<yAM+
return getHibernateTemplate [ UQzCqV
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().findByNamedQuery(namedQuery); +
} tV%M2DxS
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publicList findByNamedQuery(finalString query, qA&N6`
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finalObject parameter){ ~,dj)x
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return getHibernateTemplate RaG-9gujI
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().findByNamedQuery(query, parameter); hCc I
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publicList findByNamedQuery(finalString query, Gv3a<Knn4
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finalObject[] parameters){ >H[&Wa+_
return getHibernateTemplate 4RJ8 2yq-
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().findByNamedQuery(query, parameters); v?5Xx{ym
} 8la.N*
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publicList find(finalString query){ V/<dHOfR\
return getHibernateTemplate().find Lab{?!E>U
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(query); ME{i-E4
} |$^,e%bE
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publicList find(finalString query, finalObject ,)u}8ty3j
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parameter){ 0}-&v+
return getHibernateTemplate().find K4snpuhC
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(query, parameter); 5fSDdaO
} ok2$ p
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public PaginationSupport findPageByCriteria |s[m;Qm[ku
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(final DetachedCriteria detachedCriteria){ ,m9Nd "6\
return findPageByCriteria Y?R;Y:u3Z
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); )d_)CuUBe
} 5d<-y2!M
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public PaginationSupport findPageByCriteria Xo;J1H
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(final DetachedCriteria detachedCriteria, finalint GL9R
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startIndex){ E_/v$
return findPageByCriteria jrvhTej
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(detachedCriteria, PaginationSupport.PAGESIZE, m{I_E
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startIndex); *<OWd'LI
} )|q,RAn
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public PaginationSupport findPageByCriteria VABrw t
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(final DetachedCriteria detachedCriteria, finalint b'St14_
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pageSize, Bz }Kdyur
finalint startIndex){ \b1I<4(
return(PaginationSupport) WIQt5=-
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getHibernateTemplate().execute(new HibernateCallback(){ f)vD2_E
publicObject doInHibernate _+T;4U'p
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(Session session)throws HibernateException { I,l%6oPa
Criteria criteria = <