Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 vkgL"([_
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ve^MqW&S
EC#10.
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 *~^^A9C8
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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 kxwm08/|f
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分页支持类: s7}
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java代码: 'Pu;]sC
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package com.javaeye.common.util; bC-x`a@
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import java.util.List; a8aqcDs>O
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publicclass PaginationSupport { UQPE )G
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publicfinalstaticint PAGESIZE = 30; v72 dE
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privateint pageSize = PAGESIZE; :|3C-+[
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privateList items; Ec
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privateint totalCount; >GUTno$J
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privateint[] indexes = newint[0]; V%=t2+
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privateint startIndex = 0; GqxK|G1
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public PaginationSupport(List items, int 1*jm9])#
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totalCount){ cEu98nP
setPageSize(PAGESIZE); ix`x dVj`
setTotalCount(totalCount); ^dD?riFAk
setItems(items); fZgU@!z
setStartIndex(0); T9?_ `h
} 9`&D
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public PaginationSupport(List items, int N*>; '
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totalCount, int startIndex){ q%9oGYjvQ
setPageSize(PAGESIZE); M-|2W~YU
setTotalCount(totalCount); V=~dgy~@
setItems(items); [?*^&[
setStartIndex(startIndex); mJ7kOQ-.$
} c= uORt>
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public PaginationSupport(List items, int +8I0.,'
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totalCount, int pageSize, int startIndex){ 7yl'!uz)9
setPageSize(pageSize); 0fU>L^P_?
setTotalCount(totalCount); blv6
setItems(items); a@J:*W
setStartIndex(startIndex); B.#0kjA}
} Z5A<TC/:
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publicList getItems(){ 74#@F{ w
return items; Lp=B? H
} DYK|"@
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publicvoid setItems(List items){ $*R9LPpk+
this.items = items; UxtZBNn8
} #cb6~AH
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publicint getPageSize(){ Cj9Tj'0@I+
return pageSize; XZGyh X7
} BW 7[JD
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publicvoid setPageSize(int pageSize){ W9~datIh>
this.pageSize = pageSize; 17d$gZ1O:
} ;@hP*7Lm
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publicint getTotalCount(){ lc7]=,qyF
return totalCount; qa0Zgn5 q
} \O~7X0 <W
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publicvoid setTotalCount(int totalCount){ Xy+|D#b
if(totalCount > 0){ B#yyO>0k]
this.totalCount = totalCount; {r)M@@[
int count = totalCount / ,P +&-}gn9
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pageSize; i^l;PvIF
if(totalCount % pageSize > 0) Nfh(2gK+
count++; iy9]Y5b
indexes = newint[count]; {5h_$a!TaU
for(int i = 0; i < count; i++){ \
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indexes = pageSize * B?'ti{p
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} w=$_',5#Z
}else{ RI=B(0A
this.totalCount = 0; /xzL!~g`6<
} l M$7/
} OHw6#N$\
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publicint[] getIndexes(){ }1wuH
return indexes; I_rVeMw=
} Fz% n!d
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publicvoid setIndexes(int[] indexes){ (
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this.indexes = indexes; K]l)z* I
} plq\D.C
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publicint getStartIndex(){ r[~$
return startIndex; .B*)A.
} zl5S)/A
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publicvoid setStartIndex(int startIndex){ $B2@mC([S
if(totalCount <= 0) RZZB?vx
this.startIndex = 0; T$e_ao|
elseif(startIndex >= totalCount) :?J$ +bm}
this.startIndex = indexes 'e@}N)IX
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[indexes.length - 1]; ?)&TewP
elseif(startIndex < 0) vKeK]
this.startIndex = 0; ?kSs7e>
else{ 21qhlkdc
this.startIndex = indexes 92i#It}-/
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[startIndex / pageSize]; BG"6jQh
}
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} 79v&6Io
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publicint getNextIndex(){ !FO)||'[
int nextIndex = getStartIndex() + sIpK@BQ'
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pageSize; ;g9+*$Gw
if(nextIndex >= totalCount) ;#due
return getStartIndex(); |*b8-a8<
else lQzrf"N'
return nextIndex; 62"ND+D4
} @."R9s
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publicint getPreviousIndex(){ ~VKw%WK
int previousIndex = getStartIndex() - `PL!>oa(8
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pageSize; [o~w>,a
if(previousIndex < 0) ,<BTv;4p
return0; ?6Gq &
else 5>HI/QG
return previousIndex; PJLA^e C7>
} "7g: u-
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} ~VOmMw4HV
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抽象业务类 :X^B1z3X4
java代码: Q|>y2g!
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/** y!#1A?|k
* Created on 2005-7-12 eR/7*G5
*/ a4wh-35/
package com.javaeye.common.business; (n<xoV[e
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import java.io.Serializable; 0ode&dB
import java.util.List; C8?/$1|RL
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import org.hibernate.Criteria; mUjA9[@
import org.hibernate.HibernateException; oDC3AK&
import org.hibernate.Session; L{42?d
import org.hibernate.criterion.DetachedCriteria; TzOf&cs/r
import org.hibernate.criterion.Projections; tFGLqR%/
import "Xm'(c(
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org.springframework.orm.hibernate3.HibernateCallback; h3:k$`_
import D526X0
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org.springframework.orm.hibernate3.support.HibernateDaoS u*M*WpY
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upport; h41v}5!-
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import com.javaeye.common.util.PaginationSupport; cIgF]My*D@
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public abstract class AbstractManager extends /ZczfM\
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HibernateDaoSupport { GB-=DC6
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privateboolean cacheQueries = false; ,Zdc
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privateString queryCacheRegion; +h
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publicvoid setCacheQueries(boolean i_MDLS>-
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cacheQueries){ QKVZ![Y!s
this.cacheQueries = cacheQueries; lU@ni(69d
} V3jx{BXs2
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publicvoid setQueryCacheRegion(String xTe?*
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queryCacheRegion){ pd|c7D!6U,
this.queryCacheRegion = X 6>Pq
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queryCacheRegion; <'/+E4m
} f[.]JC+,
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publicvoid save(finalObject entity){ z_zr3XR9
getHibernateTemplate().save(entity); c<e$6:|xM
} 'Ct+0X:D
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publicvoid persist(finalObject entity){ jtZ@`io
getHibernateTemplate().save(entity); 40Du*5M
} ?-(E$ll
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publicvoid update(finalObject entity){ }g3)z%Xe'[
getHibernateTemplate().update(entity); tUtl>>6Iu
} gSP|;Gy
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publicvoid delete(finalObject entity){ 2lGq6Au:
getHibernateTemplate().delete(entity); }C)
} s |qB;
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publicObject load(finalClass entity, 1{DHlyA6g
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finalSerializable id){ md<%Z4+
return getHibernateTemplate().load 8zr)oQ:
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(entity, id); I@[.W!w
} -0>@jfP^D
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publicObject get(finalClass entity, *iYs,4
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finalSerializable id){ nkvzv
return getHibernateTemplate().get byd[pnI$H
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(entity, id); x5{ zGv.j
} Yh4e\]ql~N
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publicList findAll(finalClass entity){ vK|dP3
return getHibernateTemplate().find("from >V NMQ
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" + entity.getName()); R,tR{| 8
} wWwY.}j
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publicList findByNamedQuery(finalString HmQuRW
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namedQuery){ @
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return getHibernateTemplate ji">} -
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().findByNamedQuery(namedQuery); ^f>+5G
} 514;!Q4K
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publicList findByNamedQuery(finalString query, M,6m*
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finalObject parameter){ 3q<\
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return getHibernateTemplate aWW|.#L
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().findByNamedQuery(query, parameter); )V+;7j<"D
} >?I[dYzut
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publicList findByNamedQuery(finalString query, is`le}$^y
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finalObject[] parameters){ Uw4KdC
return getHibernateTemplate 3<?#*z4]_
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().findByNamedQuery(query, parameters); <