Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 xy:Mb =r
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 BlpyE[h
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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 X`_tm3HC
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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 8|@) #:
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分页支持类: J.JD8o9sa
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java代码: K W&muD
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package com.javaeye.common.util; lt-3OcC
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import java.util.List; FDgo6x
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publicclass PaginationSupport { m
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publicfinalstaticint PAGESIZE = 30; HXT"&c|
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privateint pageSize = PAGESIZE; HlX~a:.7
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privateList items; o*A, 6y
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privateint totalCount; BEvt{q4
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privateint[] indexes = newint[0]; /TsXm-g#
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privateint startIndex = 0; sDBSc:5+e
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public PaginationSupport(List items, int MH)V=xU|)
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totalCount){ n@tt.n!{l
setPageSize(PAGESIZE); vWmp?m
setTotalCount(totalCount); tW~kn9glZ
setItems(items); pNd`fV#jX
setStartIndex(0);
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} \xp0n
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public PaginationSupport(List items, int )U|V |yem'
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totalCount, int startIndex){ .WKJ37od
setPageSize(PAGESIZE); 9nVb$pf e#
setTotalCount(totalCount);
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setItems(items); 1c QF(j_
setStartIndex(startIndex); s:lH4B
} y@v)kN)Y9\
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public PaginationSupport(List items, int )SP"V~^Wn
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totalCount, int pageSize, int startIndex){ 41=H&G&
setPageSize(pageSize); %r.OV_04
setTotalCount(totalCount); &I=o1F2B)
setItems(items); i/*)1;xsk
setStartIndex(startIndex); dH5*%
} syLdm3d|
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publicList getItems(){ Zgh~7Z/
return items; 00D.Jn
} ?8kFAf~
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publicvoid setItems(List items){ l[_antokn
this.items = items; '*XIp:
} h0m5oV
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publicint getPageSize(){ O)V;na
return pageSize; jA {BG_
} l"JM%LV
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publicvoid setPageSize(int pageSize){ ~D5FnN9
this.pageSize = pageSize; 3pML+Y|ij
} ;;i419
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publicint getTotalCount(){ zmZU"eWp)
return totalCount; %CnVK1u!
} +JG05h%'
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publicvoid setTotalCount(int totalCount){ nLAwo3
if(totalCount > 0){ du}HTrsC
this.totalCount = totalCount; 2k=|p@V n~
int count = totalCount / Has}oe[
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pageSize; 6oQ7u90z*
if(totalCount % pageSize > 0) y`$qcEw
count++; 'LG\]h>+)
indexes = newint[count]; aC=2v7*
for(int i = 0; i < count; i++){ !Z>,dN
indexes = pageSize * #tUhul/O
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} QqF*SaO>
}else{ zqU$V~5;rG
this.totalCount = 0; }\H. G
} SJ22
} cM9>V2:P
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publicint[] getIndexes(){ xe6V7Wi/Tt
return indexes; KXx;~HtO
} uL7}JQ,
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publicvoid setIndexes(int[] indexes){ D@sMCR
this.indexes = indexes; n%\\1
} $#/8l58
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publicint getStartIndex(){ E$ 8-8[
return startIndex; + W1l9n*
} dk1q9Tx
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publicvoid setStartIndex(int startIndex){ WxD$k3U
if(totalCount <= 0) `0W"[BY
this.startIndex = 0; ER-Xd9R
elseif(startIndex >= totalCount)
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this.startIndex = indexes MY\mo,#
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[indexes.length - 1]; &<#1G
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elseif(startIndex < 0) $l.8
this.startIndex = 0; ;W+1 H !
else{ $A74V[1^
this.startIndex = indexes kz1Z K
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[startIndex / pageSize]; n&]J-^Tx
} t:lDFv4s
} B
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publicint getNextIndex(){ E{-pkqx
int nextIndex = getStartIndex() + f]2gjQHM
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pageSize; MwD+'5
if(nextIndex >= totalCount) &{WEtaXaa
return getStartIndex(); c uAp,!
else K4Nz I9@
return nextIndex; liB~vdqj
} ^cW{%R>XY
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publicint getPreviousIndex(){ b)XGr?
int previousIndex = getStartIndex() - |1!|SarM{B
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pageSize; tIBEja^l
if(previousIndex < 0) ;1,#rTs
return0; T|oDJ]\J
else KVoi>?a
return previousIndex; )i39'0a
} <;+QK=f
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} |M<R{Tt}nf
}
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抽象业务类 c&RiUU7
java代码: 3PzF^ 8KJ
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/** S=w ~bz,/
* Created on 2005-7-12 *0a7H$iQ(]
*/ S +73 /Vs
package com.javaeye.common.business; bw#\"uJ
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import java.io.Serializable; ONcS,oHW
import java.util.List; lg (>n&
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import org.hibernate.Criteria; VJgf,
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import org.hibernate.HibernateException; ZZ0b!{qj3
import org.hibernate.Session; C}XB%:5H5
import org.hibernate.criterion.DetachedCriteria; ,tBc%&.f
import org.hibernate.criterion.Projections; +x:VIi
import WIwGw %_~
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org.springframework.orm.hibernate3.HibernateCallback; ;P|v'NNI
import l_q1h]/
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org.springframework.orm.hibernate3.support.HibernateDaoS :SD3
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upport; xdsF! Zb
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import com.javaeye.common.util.PaginationSupport; cz>`$Zz
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public abstract class AbstractManager extends y3V47J2o
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HibernateDaoSupport { #0qMYe>Y
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privateboolean cacheQueries = false; C\[g>_J
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privateString queryCacheRegion; f V/
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publicvoid setCacheQueries(boolean <8Q?kj
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cacheQueries){ '&xRb*
this.cacheQueries = cacheQueries; ZcN%F)htm
} v".u#G'u
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publicvoid setQueryCacheRegion(String @)@hzXQ
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queryCacheRegion){ 9c@\-Z'
this.queryCacheRegion = lFM'F [-?-
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queryCacheRegion; "l09Ae'V
} oxqD/fY
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publicvoid save(finalObject entity){ 5HbPS%^.
getHibernateTemplate().save(entity); Vuo 8[h>
} n)teX.ck)
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publicvoid persist(finalObject entity){ pK2n'4
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getHibernateTemplate().save(entity); m4T`Tg#P
} nr9cG/"
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publicvoid update(finalObject entity){ 6sRKbp|r7
getHibernateTemplate().update(entity); Uw_z9ZL
} T/l2B1
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publicvoid delete(finalObject entity){ #T)gKp
getHibernateTemplate().delete(entity); i_;]UvP
} *8QGv6*vQ
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publicObject load(finalClass entity, ,7Lu7Q
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finalSerializable id){ *(@[E
return getHibernateTemplate().load O/Wc@Ln
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(entity, id); ma M8:\
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publicObject get(finalClass entity, S)\%.~ n
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finalSerializable id){ #6<9FY#
return getHibernateTemplate().get V0WFh=CM@
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(entity, id); NCysYmt
} KEj-y+
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publicList findAll(finalClass entity){ [P_1a`b
return getHibernateTemplate().find("from @oL<Ioh
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" + entity.getName()); !23#Bz7
} Y|iALrx
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publicList findByNamedQuery(finalString rj].bGQ,+
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namedQuery){ ^^Tu/YC9x
return getHibernateTemplate pb5'5X+
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().findByNamedQuery(namedQuery); rx#\Dc}
} ojitBo~
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publicList findByNamedQuery(finalString query, L);kwx7{LW
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finalObject parameter){ q,a|lH
return getHibernateTemplate VFMg$qv|_
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().findByNamedQuery(query, parameter); uU]4)Hp
} =p)Wxk
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publicList findByNamedQuery(finalString query, )#dP:
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finalObject[] parameters){ q|%(47}z
return getHibernateTemplate ^\<1Y''
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().findByNamedQuery(query, parameters); daZY;_{"o
} AT U
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publicList find(finalString query){ >p 7e6%
return getHibernateTemplate().find K G~fDb
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(query); `_'I 9,.a
} vF K&.J
{ LJRdV
publicList find(finalString query, finalObject YDyi6x,
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parameter){ bgm$<