Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 t*KgCk 1
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 vuN!7*d+
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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 2z#gn9Wb
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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 TuR.'kE@
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分页支持类: 4@0y$Dv\
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java代码: A43 mX!g\
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package com.javaeye.common.util; @?bO@
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import java.util.List; *UxN~?N|
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publicclass PaginationSupport { :^bjn3b
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publicfinalstaticint PAGESIZE = 30; 2d:IYCl4q
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privateint pageSize = PAGESIZE; Q&\(m[:)
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privateList items; ^(79SOZC
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privateint totalCount; HnlCEW,^o
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privateint[] indexes = newint[0]; >n(Ga9E
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privateint startIndex = 0; @T 5dPmn
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public PaginationSupport(List items, int #I
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totalCount){ Aq3.%,X2H
setPageSize(PAGESIZE); M?[~_0_J
setTotalCount(totalCount); rP%B#%;S"
setItems(items); vHmsS\\~9
setStartIndex(0); _ -6IB>
} )y#~eYn
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public PaginationSupport(List items, int -mfd ngp3
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totalCount, int startIndex){ a]]>(Txc
setPageSize(PAGESIZE); V(#z{!
setTotalCount(totalCount); e09('SON(
setItems(items); F<9S,
setStartIndex(startIndex); N0mP
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} rb_FBa%
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public PaginationSupport(List items, int (U?*Z/
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totalCount, int pageSize, int startIndex){ U#U' iPy
setPageSize(pageSize); u&-Zh@;Q7
setTotalCount(totalCount); .$]%gjIBCl
setItems(items); UB8TrYra
setStartIndex(startIndex); kZU
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} a9%^Jvm"
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publicList getItems(){ ,GVD.whUl
return items; Tm) (?y
} 5J vrQGvL
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publicvoid setItems(List items){ S`t@L}
this.items = items; \2U F J
} )}|b6{{<
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publicint getPageSize(){ t gpg
return pageSize; BXj]]S2
} drkY~!a
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publicvoid setPageSize(int pageSize){ sgxD5xj}4
this.pageSize = pageSize; >3SZD
} YYs/r
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publicint getTotalCount(){ d) i64"
return totalCount; Jv[c?6He
} l2|[
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publicvoid setTotalCount(int totalCount){ lXnzomU
if(totalCount > 0){ ZOIx+%/Vd#
this.totalCount = totalCount; ]Te,m}E
int count = totalCount / 81jVjf?`
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pageSize; z7$,m#tw
if(totalCount % pageSize > 0) Z!eW_""wp
count++; H5J1j*P<d
indexes = newint[count]; 0<4Nf]i
for(int i = 0; i < count; i++){ |Ym3.hz
indexes = pageSize * vlSSw+r9
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} @;1Ym\zc
}else{ <>?7veN92
this.totalCount = 0; kH|cB!?x
} Z^_-LX:%
} 8nKb
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publicint[] getIndexes(){ ?VRf5 Cr-
return indexes; @en*JxIM
} *MD\YFXR
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publicvoid setIndexes(int[] indexes){ JC#M,j2
this.indexes = indexes; MIx,#]C&
} sO$X5S C9
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publicint getStartIndex(){ `SM37({c
return startIndex; S:YQVj
} FofeQ
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publicvoid setStartIndex(int startIndex){ e4mAKB
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if(totalCount <= 0) Ax{C ^u
this.startIndex = 0;
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elseif(startIndex >= totalCount) ;'i>^zX`
this.startIndex = indexes e,8[fp-7
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[indexes.length - 1]; < ?{ic2j#
elseif(startIndex < 0) :ND e<6?u
this.startIndex = 0; )1iqM]~;B
else{ e?yrx6
this.startIndex = indexes ,C;%AS/
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[startIndex / pageSize]; DU|>zO%
} ,.,spoV
} 8m"(T-wb6{
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publicint getNextIndex(){ ttfCiP$
int nextIndex = getStartIndex() + _/[}PQC6G
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pageSize; L{F[>^1Sb
if(nextIndex >= totalCount) #dhce0m
return getStartIndex(); a%XF"*^v
else F\Q X=n
return nextIndex; G;he:Bf
} Z3qr2/
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publicint getPreviousIndex(){ 'izv[{!n{
int previousIndex = getStartIndex() - {YMO8
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pageSize; tFvXVfml
if(previousIndex < 0) opv<r*!
return0; cTa$t :K@
else f~P~%
return previousIndex; lEXI<b'2
} i#KY'"P
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} )z!#8s
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抽象业务类 ~@d4p|K
java代码: )~be<G( a
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/** TH>7XK<90M
* Created on 2005-7-12 AYsiaSTRqW
*/ N~vK8j@
package com.javaeye.common.business; b NR@d'U
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import java.io.Serializable; >=K~*$&>
import java.util.List; w~ O)DhC
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import org.hibernate.Criteria; Q`!<2i;
import org.hibernate.HibernateException; /[+qw%>
import org.hibernate.Session; Vo(>K34
import org.hibernate.criterion.DetachedCriteria; 4vyJ<b
import org.hibernate.criterion.Projections; DbrK,'b%
import m2v'zJd}g
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org.springframework.orm.hibernate3.HibernateCallback; Yv"-_
import g`I$U%a_2
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org.springframework.orm.hibernate3.support.HibernateDaoS 6yK"g7
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upport; !~`aEF3
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import com.javaeye.common.util.PaginationSupport; T854}RX[{
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public abstract class AbstractManager extends j"9Zaq_
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HibernateDaoSupport { xcX^L84\
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privateboolean cacheQueries = false; "O<TNSbrC
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privateString queryCacheRegion; sfR0wEqI
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publicvoid setCacheQueries(boolean !yu-MpeG
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cacheQueries){ (|sqN8SbA
this.cacheQueries = cacheQueries; MrhJk
} XL`i9kV?
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publicvoid setQueryCacheRegion(String xPMX\aI|l
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queryCacheRegion){ ~`<_xIvrq
this.queryCacheRegion = Nrzg>WQa
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queryCacheRegion; r?}L^bK
} [-2Tj)P
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publicvoid save(finalObject entity){ [t"#4[
getHibernateTemplate().save(entity); )w0K2&)A
} /OeOL3Y
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publicvoid persist(finalObject entity){ YQaL)t$0
getHibernateTemplate().save(entity); %kL]-Z
} 9`G}GU]@}
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publicvoid update(finalObject entity){ T^H`$;\
getHibernateTemplate().update(entity); c1h?aP
} Z(hRwIOF
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publicvoid delete(finalObject entity){ g>H\"cUv
getHibernateTemplate().delete(entity); cLm{gd4 W
} 5mg] su
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publicObject load(finalClass entity, 2x:aMWh
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finalSerializable id){ 4H hQzVM{
return getHibernateTemplate().load I=|}%WO#
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(entity, id); *7K)J8kq
} jo ~p#l.'
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publicObject get(finalClass entity, -}P/<cu:
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finalSerializable id){ kRB2J3Nt.
return getHibernateTemplate().get |1UJKJwX
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(entity, id); {
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} MJG)fFl]O
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publicList findAll(finalClass entity){ 5Cl;h^R|m
return getHibernateTemplate().find("from c'Zs2s7$
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" + entity.getName()); b0[H{q-z{X
} yA^+<uz}
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publicList findByNamedQuery(finalString 2IFEl-IB[
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namedQuery){ %$zX a%A
return getHibernateTemplate p"o_0{8
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().findByNamedQuery(namedQuery); 5db9C}0
} AHdh]pfH
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publicList findByNamedQuery(finalString query, A IsXu"
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finalObject parameter){ laGIu0s{
return getHibernateTemplate xkmqf7w
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().findByNamedQuery(query, parameter); g:fzf>oQ>p
} H(ds
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publicList findByNamedQuery(finalString query, O"f|gc)GLz
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finalObject[] parameters){ IW- BY =C
return getHibernateTemplate ,B$m8wlI|
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().findByNamedQuery(query, parameters); ;p/$9b.0:
} h0Ilxa
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publicList find(finalString query){ eC*-/$D
return getHibernateTemplate().find o;7_*=i
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(query); uDsof?z
} :DR}lOi`
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publicList find(finalString query, finalObject ^Mi&2AvS
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parameter){ nfA#d-
return getHibernateTemplate().find KU)~p"0[6]
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(query, parameter); uI+^8-HZ;
} IjnO2X
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public PaginationSupport findPageByCriteria
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(final DetachedCriteria detachedCriteria){ _.K<#S
return findPageByCriteria av4g/7=
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); {igVuZ(>en
} E:S (v
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public PaginationSupport findPageByCriteria S$1dXXT
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(final DetachedCriteria detachedCriteria, finalint Yp8GW1@
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startIndex){ s.KHm
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return findPageByCriteria ew\ZF qA;
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(detachedCriteria, PaginationSupport.PAGESIZE, LM?UV)
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startIndex); wU)vJsOq
} +N>&b%
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public PaginationSupport findPageByCriteria Mh*^@_h?
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(final DetachedCriteria detachedCriteria, finalint }^}ep2^
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