Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 @R}3f6@67
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 O2\(:tvw
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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 ;p2b^q'
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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 ~;?<OOt|wG
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分页支持类: ;1[Z&Uv8
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java代码: F@k}p-e~
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package com.javaeye.common.util; Q&N#q53
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import java.util.List; =qc+sMo
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publicclass PaginationSupport { D/f4kkd
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publicfinalstaticint PAGESIZE = 30; ?"r=08
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privateint pageSize = PAGESIZE; @`dg:P*[
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privateList items; }a$.ngP
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privateint totalCount; VK]U* V1
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privateint[] indexes = newint[0]; E#!!tH`lgg
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privateint startIndex = 0; VJqk0w+
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public PaginationSupport(List items, int !CWe1Dm
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totalCount){ 3}<U'%sd
setPageSize(PAGESIZE); W\k8f+Ke
setTotalCount(totalCount); =&} _bd/]
setItems(items); +q}t%K5
setStartIndex(0); ![^pAEgx
} B6Kl_~gT
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public PaginationSupport(List items, int 'ZW(Hjrd
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totalCount, int startIndex){ %`yfi+e
setPageSize(PAGESIZE); L"|Bm{Run
setTotalCount(totalCount); ]alc%(=
setItems(items); \~l_w
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setStartIndex(startIndex); Sp80xV_B
} Bi:lC5d5?
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public PaginationSupport(List items, int FAEF
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totalCount, int pageSize, int startIndex){ +gX,r$bX
setPageSize(pageSize); $]We |
setTotalCount(totalCount); ^
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setItems(items); eo0-aHs
setStartIndex(startIndex); m!/TJhiQ
} IC0L&;En
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publicList getItems(){ 6P1s*u
return items; sgp.;h'
} F3}MM
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publicvoid setItems(List items){ t]LiFpy2IC
this.items = items; G%erh}0~
} w(Z ?j%b
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publicint getPageSize(){ b_31 \
return pageSize; _6NUtU
} gF{ehU%
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publicvoid setPageSize(int pageSize){ Jj-\Eb?
this.pageSize = pageSize; %bDxvaftT
} -F ~DOG%
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publicint getTotalCount(){ !g|O.mt
return totalCount; :\OSHs<M
} $+*nb4
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publicvoid setTotalCount(int totalCount){ 0^ODJ7
if(totalCount > 0){ @t9HRL?T~
this.totalCount = totalCount; TpKAdrY
int count = totalCount / =?RI`}vw_H
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pageSize; c{MoeIG)v@
if(totalCount % pageSize > 0) aA`eKy) \
count++; u&:N`f
indexes = newint[count]; *G58t`]r
for(int i = 0; i < count; i++){ v"G1vSx)BT
indexes = pageSize * 75# 8P?i
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} *()['c#CC
}else{ ;I>nA6A
this.totalCount = 0; #A/OGi
} ppAbG,7
} [6!k:-t+
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publicint[] getIndexes(){ t1']q"
return indexes; N<)CG,/w[M
} S#/BWNz|
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publicvoid setIndexes(int[] indexes){ hi8q?4jE
this.indexes = indexes; ._}}@V_/
} WcN4ff-
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publicint getStartIndex(){ a~_9BM41T
return startIndex;
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} ;8]HCC@:
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publicvoid setStartIndex(int startIndex){ uN%Cc12
if(totalCount <= 0) ,P~e)<.
this.startIndex = 0; &f.5:u%{b
elseif(startIndex >= totalCount) cC*WZ]
this.startIndex = indexes i2qN 0?n
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[indexes.length - 1]; n_QuuUB
elseif(startIndex < 0) Igo`\JY
this.startIndex = 0; .O-)m'5
else{ <-`bWz=+
this.startIndex = indexes 392V\qtS
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[startIndex / pageSize]; nDrRK
} khX/xL
} G@s:|oe
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publicint getNextIndex(){ 2zj`
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int nextIndex = getStartIndex() + HYl+xH'.j
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pageSize; `q}D#0
if(nextIndex >= totalCount) lO@-*m$
return getStartIndex(); xM_#FxJb
else >\JPX
return nextIndex; gc4o
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} I(6%'s2
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publicint getPreviousIndex(){ br\3}
int previousIndex = getStartIndex() - zfU Do`V~
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pageSize; Gr({30"8
if(previousIndex < 0) J.~@j;[2
return0; v=^^Mr"Z^
else P~(&lu/;P
return previousIndex; {r&r^!K;
} Nr@,In|JS
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} %Vo'\|
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抽象业务类 Z@q1&}D!
java代码: .Z7tE?
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/** ^3HSw ?a"
* Created on 2005-7-12 d Np%=gIj
*/ ~&/Nl_#
package com.javaeye.common.business; 41R~.?
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import java.io.Serializable; PR;Bxy
import java.util.List; 4gZ R!J
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import org.hibernate.Criteria; |QrVGm@2
import org.hibernate.HibernateException; E=.J*7
import org.hibernate.Session; ^Oj^7.T+
import org.hibernate.criterion.DetachedCriteria; u}'m7|)8
import org.hibernate.criterion.Projections; F, =WfM\
import 25G~rklk
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org.springframework.orm.hibernate3.HibernateCallback; B <Jxj
import ;&b=>kPlZ
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org.springframework.orm.hibernate3.support.HibernateDaoS UXa%$gwFw
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upport; h\C1:0x{
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import com.javaeye.common.util.PaginationSupport; RaiYq#X/
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public abstract class AbstractManager extends dn5t7D^x
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HibernateDaoSupport { 'fb&3
@
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privateboolean cacheQueries = false; 7vqE@;:dt
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privateString queryCacheRegion; nQw, /Lk
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publicvoid setCacheQueries(boolean @M*5q# s
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cacheQueries){ pfk)_;>,
this.cacheQueries = cacheQueries; ,=6;dT
} 5t-(MY
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publicvoid setQueryCacheRegion(String %F*h}i
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queryCacheRegion){ (.M &nN'Ce
this.queryCacheRegion = &'5j!
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queryCacheRegion; U,9=&"e b
} U_0"1+jbq
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publicvoid save(finalObject entity){ BfvvJh_
getHibernateTemplate().save(entity); g<4@5OQKu
} i;<H^\%
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publicvoid persist(finalObject entity){ $T'lWD *
getHibernateTemplate().save(entity); |P=-m-W
} Gy[m4n~Z5
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publicvoid update(finalObject entity){ >x1?t
getHibernateTemplate().update(entity); n ^C"v6X
} /`B:F5r
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publicvoid delete(finalObject entity){ "M:0lUy
getHibernateTemplate().delete(entity); AtlUxFX0S
} =qTmFszT
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publicObject load(finalClass entity, $~.'Tnk)
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finalSerializable id){ 5F|oNI}$:
return getHibernateTemplate().load 1A\N$9Dls
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;
(entity, id); H(j983
} vqJjAls
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publicObject get(finalClass entity, D~JrO]mi
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finalSerializable id){ (\NZ)Ys
return getHibernateTemplate().get .qk_m-o
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(entity, id); EAXbbcV
} vTU*6)
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publicList findAll(finalClass entity){ m'.y,@^B
return getHibernateTemplate().find("from `Kq4z62V
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,<
" + entity.getName()); [oh0 )wzB
} u3ns-e
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publicList findByNamedQuery(finalString R<n'v.~"A
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namedQuery){ &!5S'J%
return getHibernateTemplate fC$(l@O?
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().findByNamedQuery(namedQuery); y)e8pPDG
}
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publicList findByNamedQuery(finalString query, .8EaFEd
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finalObject parameter){ {gwJ>]z"e
return getHibernateTemplate !O}^ Y
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().findByNamedQuery(query, parameter); FH}2wO~ _
} sV`!4
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publicList findByNamedQuery(finalString query, C=>IJ'G
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finalObject[] parameters){ 78fFAN`
return getHibernateTemplate TtKV5
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().findByNamedQuery(query, parameters); ]d]rV
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} +#V.6i
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publicList find(finalString query){ $]t3pAI[H0
return getHibernateTemplate().find -.=:@H}r
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(query); J70r`
} bs9X4n5
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publicList find(finalString query, finalObject FZ~^cK9g:
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parameter){ "vL,c]D
return getHibernateTemplate().find zD,K_HicI
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(query, parameter); gql^Inx<
} d$T856
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public PaginationSupport findPageByCriteria D(&XmC[\Y
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(final DetachedCriteria detachedCriteria){ 0 F-db
return findPageByCriteria Mj5&vs~n;
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); O@-|_N*;K
} fx3oA}
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public PaginationSupport findPageByCriteria VteMsL/H
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(final DetachedCriteria detachedCriteria, finalint z=1N}l~|*
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