Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 JN9>nC!Zy_
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 >w7KOVbN3
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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 6hd<ys?
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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 (57!{[J
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分页支持类: 7p]Izx8][
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java代码: NNbdP;=:u
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package com.javaeye.common.util; ej}S{/<*n
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import java.util.List; %>=6v}f,+
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publicclass PaginationSupport { 7p2xst
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publicfinalstaticint PAGESIZE = 30; -j]k^
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privateint pageSize = PAGESIZE; _ pz}
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privateList items; o.fqJfpj
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privateint totalCount; EmcLW74
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privateint[] indexes = newint[0]; /QyKXg6)l
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privateint startIndex = 0; 0stc$~~v
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public PaginationSupport(List items, int D%yY&q;
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totalCount){ kO3\v)B;
setPageSize(PAGESIZE); :p: C
setTotalCount(totalCount); {LF4_9 =
setItems(items); PgK7CG7G
setStartIndex(0); 1]~w?)..'
} +Z|3[#W
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public PaginationSupport(List items, int y{hy7w' d
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totalCount, int startIndex){ 9ZJ 8QH
setPageSize(PAGESIZE); <OGG(dI
setTotalCount(totalCount); 9)'f)60^
setItems(items); m!%aB{e
setStartIndex(startIndex); thJ~*
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} Yjjh}R#
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public PaginationSupport(List items, int @pYEzizP7
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totalCount, int pageSize, int startIndex){ u7[}pf$}
setPageSize(pageSize); 4_=2|2Wz[
setTotalCount(totalCount); [TFJb+N&
setItems(items); *|dr-e_j
setStartIndex(startIndex); }Rw ,4
} C{zp8 A(Dh
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publicList getItems(){ _/I">/ivlM
return items; PT6]qS'1
} MqAi}z%
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publicvoid setItems(List items){ _5-h\RB)
this.items = items; vNv!fkl
} qy3@>
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publicint getPageSize(){ be,Rj,-
return pageSize; 3J+2#ML
} ?qaWt/m
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publicvoid setPageSize(int pageSize){ O9sEaVX
this.pageSize = pageSize; \uJRjw+
} c[,h|~K/_?
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publicint getTotalCount(){ v.jxG{~.
return totalCount; RPW46l34
} @m#OhERv
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publicvoid setTotalCount(int totalCount){ ai/|qYf
if(totalCount > 0){ _?I{>:!|
this.totalCount = totalCount; *i]?J
int count = totalCount / (jc& Fk
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pageSize; sF{aG6u
if(totalCount % pageSize > 0) X@\W*
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count++; h)HEexyRg
indexes = newint[count]; Kgu8E:nL
for(int i = 0; i < count; i++){ Vb(b3
indexes = pageSize * (.ir"\k1(
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i; u
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} W[\6h Zv
}else{ G@k]rwub
this.totalCount = 0; %tyo(HZQ
} 4#B'pJMw9
} }4A] x`3
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publicint[] getIndexes(){ V 95o(c.p
return indexes; cKt=?
} -&5YRfr!
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publicvoid setIndexes(int[] indexes){ 1 ~zjsi
this.indexes = indexes; lT|Gkm<G
} K*>%,mP$i
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publicint getStartIndex(){ q!ZM Wg
return startIndex; LjI`$r.B
} X8$i*#D
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publicvoid setStartIndex(int startIndex){ ^m |@pp
if(totalCount <= 0) 5 #K*75>
this.startIndex = 0; M^o_='\bE
elseif(startIndex >= totalCount) /;*_[g5*i
this.startIndex = indexes K92j BR
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[indexes.length - 1]; Q/+`9z+c
elseif(startIndex < 0) Dr3_MWJ+
this.startIndex = 0; 9n&
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else{ ?b;2PH"
this.startIndex = indexes (~GQncqa
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[startIndex / pageSize]; =-h^j
} Y[{:?i~9,
} SYCL\b
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publicint getNextIndex(){ LhJUoX
int nextIndex = getStartIndex() + srGOIK.
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pageSize; >JyS@j}
if(nextIndex >= totalCount) 6 c_#"4
return getStartIndex(); -s3`mc}*
else 0bTj/0G?
return nextIndex; s1:Wrz?4
} $UR:j8C{p$
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publicint getPreviousIndex(){ o,6t:?Z
int previousIndex = getStartIndex() - 2J7|y\N,
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pageSize; F]aoTy
if(previousIndex < 0) h?mDtMCw2
return0; V}jGxt0
else B9maz"lJ
return previousIndex; XO+BZB`F
} mUBy*.
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} M3tl4%j
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抽象业务类 !eW1d0n'+f
java代码: K:,V>DL
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/**
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* Created on 2005-7-12 pbH!u+DF
*/ jIol`WX
package com.javaeye.common.business; ?qgQ)#6
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import java.io.Serializable; %K6veB{M
import java.util.List; 7%*#M#(T
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import org.hibernate.Criteria; I!lDKS,b
import org.hibernate.HibernateException; d?zSwLsl
import org.hibernate.Session; 1}(22Q;
import org.hibernate.criterion.DetachedCriteria; /ZvP.VW&
import org.hibernate.criterion.Projections; scg&"s
import )DgXsT
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org.springframework.orm.hibernate3.HibernateCallback; 6{h\CU}"
import zI`I
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org.springframework.orm.hibernate3.support.HibernateDaoS EF0v!XW
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upport; gv*b`cl
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import com.javaeye.common.util.PaginationSupport; 3~>-A=
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public abstract class AbstractManager extends =:H-9
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HibernateDaoSupport { ;UQGi}?CD
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privateboolean cacheQueries = false; r w?wi}}gn
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privateString queryCacheRegion; ;uBGB
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publicvoid setCacheQueries(boolean Q((&Q?Vi
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cacheQueries){ B2;P%B
this.cacheQueries = cacheQueries; uo"<}>iJ
} \Zj%eW!m
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publicvoid setQueryCacheRegion(String 69c4bT:b"
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queryCacheRegion){ ^ja]e%w#
this.queryCacheRegion = y=Y k$:-y
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queryCacheRegion; UqK.b}s
} ]s\r3I]
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publicvoid save(finalObject entity){ S\GWMB!oF
getHibernateTemplate().save(entity); 8E%LhA.
} (?z?/4>7<
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publicvoid persist(finalObject entity){ +Mo4g2W
getHibernateTemplate().save(entity); wm5&5F4:
} I}`pY3
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publicvoid update(finalObject entity){ x@NfN*?/+i
getHibernateTemplate().update(entity); 7-744wV}Z
} (\6E.Z#
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publicvoid delete(finalObject entity){ U0&myj 8L
getHibernateTemplate().delete(entity); _Ewh:IM-
} ]#o;`5'
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publicObject load(finalClass entity, &^`Wtd~g
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finalSerializable id){ 9g6$"',H
return getHibernateTemplate().load [ V.67_~
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(entity, id); #}7T$Va
} }U}zS@kI
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publicObject get(finalClass entity, hK?GIbRZ
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finalSerializable id){ [2@:jLth=
return getHibernateTemplate().get IdmP!(u
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(entity, id); T+Yv5l
} Cy-p1s
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publicList findAll(finalClass entity){ Xt$qjtVM
return getHibernateTemplate().find("from ,
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" + entity.getName()); Q>5f@aN
} AXbb-GK
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publicList findByNamedQuery(finalString v!I z&M:z
)@!fLAT
namedQuery){ !oH{=.w
return getHibernateTemplate I~l
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().findByNamedQuery(namedQuery); 4)iP%%JH
} [{Wo:c9Qq1
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publicList findByNamedQuery(finalString query, lWRl
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finalObject parameter){ kqB# 9
return getHibernateTemplate V Rv4p5
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().findByNamedQuery(query, parameter); 2TGND-(j
} -;cF)C--12
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publicList findByNamedQuery(finalString query, lJ3VMYVrUP
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finalObject[] parameters){ W3~u J(
return getHibernateTemplate Q0xGd(\
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().findByNamedQuery(query, parameters); O
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} "rMfe>;FJ
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publicList find(finalString query){ ;bwBd:Y
return getHibernateTemplate().find (1x8DVXNN
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