Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Ta[\BWR2
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 b50mMWtG
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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 /z_]7]
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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 E#\Oe_eq~N
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分页支持类: fZj,Q#}D
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java代码: O,9^R
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package com.javaeye.common.util; d!UxFY@
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import java.util.List; } lDX3h
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publicclass PaginationSupport { c-PZG|<C[
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publicfinalstaticint PAGESIZE = 30; araXE~Ac
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privateint pageSize = PAGESIZE; 14"57Jt8
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privateList items; 3LT~-SvL
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privateint totalCount;
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privateint[] indexes = newint[0]; pY@QR?F\
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privateint startIndex = 0; 1f<R,>
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public PaginationSupport(List items, int &92/qRh7
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totalCount){
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setPageSize(PAGESIZE); mEbI\!}H0
setTotalCount(totalCount); ^?Mp(o
setItems(items); @lF?+/=$
setStartIndex(0); D*ZjoU
} Ku%tM7 ad
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public PaginationSupport(List items, int _
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totalCount, int startIndex){ Hf@4p'
setPageSize(PAGESIZE); e`s1z|h
setTotalCount(totalCount); '9Z`y_~)G
setItems(items); cZQ8[I
setStartIndex(startIndex); >7PQOQMW'
} MzX&|wimb
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public PaginationSupport(List items, int Sz@z
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totalCount, int pageSize, int startIndex){ Gk{ 'U
setPageSize(pageSize); !9WGZfK+0Y
setTotalCount(totalCount); gK QJ^a\!
setItems(items); >]pZ;e$
setStartIndex(startIndex); |67Jw2
} L?j0t*do
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publicList getItems(){ P*A+k"DU1
return items; Yu\$Y0 {]
} N?ccG\t
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publicvoid setItems(List items){ Cd_@<
this.items = items; Ai1"UYk\\Y
} (<r)xkn
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publicint getPageSize(){ >jsY'Bm
return pageSize; A{
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} -n&&d8G^s
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publicvoid setPageSize(int pageSize){ wKLYyetM!
this.pageSize = pageSize; e{@RBYX@+c
} J`U]Ux/L
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publicint getTotalCount(){ | J3'#7
return totalCount; 7h}gIm7e"
} >)u;X
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publicvoid setTotalCount(int totalCount){ `P;r[j"
if(totalCount > 0){ }bv+^#
this.totalCount = totalCount; Qdq;C,}Ai.
int count = totalCount / !iKW1ks
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pageSize; ~tA ^[tK
if(totalCount % pageSize > 0) FC] *^B
count++; %-blx)Pc
indexes = newint[count]; T0tX%_6`
for(int i = 0; i < count; i++){ Y2x|6{ #
indexes = pageSize * Gu*y7I8
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} xrPZy*Y,
}else{ Xx{| [2`
this.totalCount = 0; VGc*aQYa
} b^$`2m-?@f
} ZLT?G
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publicint[] getIndexes(){ ZOEe -XW
return indexes; *'-4%7C`1
} <=">2WP{
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publicvoid setIndexes(int[] indexes){ (p[#[CI9
this.indexes = indexes; m"n74cxS
} ChTq !W
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publicint getStartIndex(){ Vc(4d-d5
return startIndex; R.rch2
} _d@YLd78P
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publicvoid setStartIndex(int startIndex){ ~a([e\~
if(totalCount <= 0) ed,A'S=d
this.startIndex = 0; zWC| Qe
elseif(startIndex >= totalCount) L;RE5YrH%6
this.startIndex = indexes lg aSIXDK
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[indexes.length - 1]; eP @#I^_
elseif(startIndex < 0) [=>=5'-
this.startIndex = 0; JD$g%hcVZa
else{ YGo?%.X
this.startIndex = indexes 4u:SE
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[startIndex / pageSize]; ;d6Dm)/(
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} ]3O&8,
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publicint getNextIndex(){ TmG);B}
int nextIndex = getStartIndex() + 7%Y`j/
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pageSize; [Arf!W-QG
if(nextIndex >= totalCount) &>zH.6%$
return getStartIndex(); YCbvCw$Ob
else |fgUW.
return nextIndex; \_`qon$9
} \jiE:Qt
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publicint getPreviousIndex(){ L+8ar9es
int previousIndex = getStartIndex() - INN}xZ
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pageSize; |Mb{0mKb
if(previousIndex < 0) lcdhOjz!N
return0; {$^'oRk
else ?P'$Vxl
return previousIndex; <l<O2 l
} ]I\GnDJ^
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} ;bE/(nz M
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抽象业务类 >5CK&6
java代码: e=0]8l>\V
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/** U!(.i1^n
* Created on 2005-7-12 Hh%!4_AMw
*/ eN=jWUoCh
package com.javaeye.common.business; 3YvKHn|V"
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import java.io.Serializable; t1?aw<
import java.util.List; Z mJ<h&
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import org.hibernate.Criteria; 7 9tE
import org.hibernate.HibernateException; ?8-Am[xH
import org.hibernate.Session; ;M3%t=KV
import org.hibernate.criterion.DetachedCriteria; WWunS|B!
import org.hibernate.criterion.Projections; `dZ|Ko%k
import .TGw+E1k
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org.springframework.orm.hibernate3.HibernateCallback; )=5&Q
import Pu3oQDldV
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org.springframework.orm.hibernate3.support.HibernateDaoS RrMEDMhk6
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upport; sM-,95H
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import com.javaeye.common.util.PaginationSupport; l!tR<$|
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public abstract class AbstractManager extends sycAAmH<
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HibernateDaoSupport { `;UWq{"
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privateboolean cacheQueries = false; ]DVr-f
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privateString queryCacheRegion; "/'3I/}
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publicvoid setCacheQueries(boolean y#GHmHeh
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cacheQueries){ OH
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this.cacheQueries = cacheQueries; i\sBey ND"
} >bW=oTFz
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publicvoid setQueryCacheRegion(String &r1(1<
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queryCacheRegion){ fmW{c mr|
this.queryCacheRegion = 3}|[<^$
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queryCacheRegion; Y^+x<
} U,#~9
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publicvoid save(finalObject entity){ p\&O;48=
getHibernateTemplate().save(entity); D4L&6[W
} Bv<g Vt
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publicvoid persist(finalObject entity){ p{w-
getHibernateTemplate().save(entity); Tdi^P}i_
} =~;~hZj
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publicvoid update(finalObject entity){ %YR&>j
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getHibernateTemplate().update(entity); KsKE#])&l
} eh9?GUr5
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publicvoid delete(finalObject entity){ _WEJ,0*#'
getHibernateTemplate().delete(entity); =.3#l@E!C
} #~
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publicObject load(finalClass entity, c1Ks{%iA
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finalSerializable id){ /yI4;:/
return getHibernateTemplate().load A6]:BuP;c
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(entity, id); m'"r<]pB*4
} Skt-5S#
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publicObject get(finalClass entity, $?56 i4
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finalSerializable id){ +9Tc.3vQ
return getHibernateTemplate().get =dGp&9K,fw
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(entity, id); B7f<XBU6>
} \GL] I.
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publicList findAll(finalClass entity){ (h0@;@@7hW
return getHibernateTemplate().find("from a`'>VCg
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" + entity.getName()); +YvF+E
} gy.UTAs
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publicList findByNamedQuery(finalString On*I.~
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namedQuery){ ]d1'5F][H
return getHibernateTemplate 95,]86
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().findByNamedQuery(namedQuery); &Gt{9#
} 5&