Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 wE$s'e
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 c>ad0xce6
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 dEASvD'
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 TDlZ!$g(
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分页支持类: /_V'DJV
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java代码: &<au/^F
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package com.javaeye.common.util; ;XG]Q<S\
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import java.util.List; %}C9
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publicclass PaginationSupport { W`$[j0
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publicfinalstaticint PAGESIZE = 30; &hayR_F9
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privateint pageSize = PAGESIZE; %3M95UZ2
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privateList items; -!cIesK;<
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privateint totalCount; Z>F@nTzb>
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privateint[] indexes = newint[0]; J58#$NC
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privateint startIndex = 0; 9e~WK720=
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public PaginationSupport(List items, int M>T[!*nTj
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totalCount){ lop uf/U0
setPageSize(PAGESIZE); B{p4G`$i1
setTotalCount(totalCount); yRC3
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setItems(items); }W$8M>l
setStartIndex(0); 7JI:=yY!>:
} !z MDP/V
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public PaginationSupport(List items, int pI>*u ]x
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totalCount, int startIndex){ I!0JG`&
setPageSize(PAGESIZE); HA!t$[_Ve
setTotalCount(totalCount); b3\B8:XFo|
setItems(items); xP{-19s1]
setStartIndex(startIndex); !hCS#'
} ^agj4$
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public PaginationSupport(List items, int vX+.e1m
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totalCount, int pageSize, int startIndex){ [ ?iqqG.
setPageSize(pageSize); QH~Jy*\+PX
setTotalCount(totalCount); G>%AZr{M
setItems(items); j0FW8!!-g
setStartIndex(startIndex); 3B{[%#vO
} ?,07;>&
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publicList getItems(){ ;i\C]*
return items; )~V}oKk0t
} 5Z{_m;I.
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publicvoid setItems(List items){ B'}"AC"
this.items = items; +8AvTSgX%
} O8lFx_N7Q
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publicint getPageSize(){ FXahZW~Ol
return pageSize; J &YQ]l
} =g~W%})
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publicvoid setPageSize(int pageSize){ ;cKH1
this.pageSize = pageSize; @2
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} \9)#l#m
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publicint getTotalCount(){ CISO<z0
return totalCount; r`6:Q&&
} 5&!'^!
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publicvoid setTotalCount(int totalCount){ |]W2EV ,b
if(totalCount > 0){ #?Mj$ZB
this.totalCount = totalCount; k4{:9zL1#?
int count = totalCount / ~Ky4+\6o>
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pageSize; _BS
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if(totalCount % pageSize > 0) !msNEE@[
count++; {%b
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indexes = newint[count]; ?n]FNjd
for(int i = 0; i < count; i++){ |~K(F<;j
indexes = pageSize * oM,- VUr
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} NTmi 2c
}else{ WUEHB
this.totalCount = 0; dMvp&M\\'
} nY_?Jq
} #@qN8J}R
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publicint[] getIndexes(){ zO~9zlik
return indexes; K
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} 3yV'XxC
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publicvoid setIndexes(int[] indexes){ gU1 #`r>[)
this.indexes = indexes; CO^Jz
} :243 H
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publicint getStartIndex(){ =X(%Svnp
return startIndex; H&4~Uo.5
} n~g LPHY
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publicvoid setStartIndex(int startIndex){ \9:wfLF8!
if(totalCount <= 0) TDNf)Mm
this.startIndex = 0; x /mp=
elseif(startIndex >= totalCount) L{8;Ud_2r
this.startIndex = indexes $_D6_|HK
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[indexes.length - 1]; qOy=O
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elseif(startIndex < 0) L}%dCe
this.startIndex = 0; s B
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else{ mdbp8,O
this.startIndex = indexes +?m0Q;%b
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[startIndex / pageSize]; 6bO~/mpWT~
} {Wv%zA*8
} >v+jh(^
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publicint getNextIndex(){ h7yqk4'Lq
int nextIndex = getStartIndex() + Ev9> @~^
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pageSize; izZ=d5+K
if(nextIndex >= totalCount) 06mlj6hV
return getStartIndex(); h|;qG)f^
else {i [y9
return nextIndex; OB-Q /?0
} zsXpA0~3s
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publicint getPreviousIndex(){ #8h;Bj
int previousIndex = getStartIndex() - r8/l P}(F
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pageSize; ?KE$r~dn
if(previousIndex < 0) OMrc_)he\
return0; `>lzlEhKV
else ,0N94pKy
return previousIndex; +T{'V^
} </"4 zD|
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} )?aaBaN$
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抽象业务类 &^".2)zU
java代码: ,*svtw:2')
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/** PWr(*ZP>hI
* Created on 2005-7-12 =8{WZCW5
*/ wBSQ:f]g
package com.javaeye.common.business; [bz T&o
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import java.io.Serializable; jXg
import java.util.List; An`3Ex[
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import org.hibernate.Criteria; Orn0Zpp<z
import org.hibernate.HibernateException; ]T:;Vo
import org.hibernate.Session; 1bnBji
import org.hibernate.criterion.DetachedCriteria; J^#:qk
import org.hibernate.criterion.Projections; iq$$+y,
import ,m3e?j@;r
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org.springframework.orm.hibernate3.HibernateCallback; K2)!h.W
import dl-l"9~;
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org.springframework.orm.hibernate3.support.HibernateDaoS `:NaEF?Sj
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upport; ,:2'YB
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import com.javaeye.common.util.PaginationSupport; c}Z6V1]QP
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public abstract class AbstractManager extends fV>CZ^=G
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HibernateDaoSupport { )!bUR\
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privateboolean cacheQueries = false; %r\n%$@_
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privateString queryCacheRegion; 56lCwXCgA
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publicvoid setCacheQueries(boolean 0|4%4Mt
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cacheQueries){ LW6ZAETyL
this.cacheQueries = cacheQueries; y9H%
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} DTRJ/@t
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publicvoid setQueryCacheRegion(String ^2D1`,|N
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queryCacheRegion){ K)tQ]P
this.queryCacheRegion = "p&Y^]
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queryCacheRegion; d[^KL;b?6
} 6RO(]5wX
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publicvoid save(finalObject entity){ S{t +>/
getHibernateTemplate().save(entity); ?t&kb7
} B Xms;[
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publicvoid persist(finalObject entity){ ^nJyo:DO;
getHibernateTemplate().save(entity); ?Ea;J0V
} j l.p'$Fbn
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publicvoid update(finalObject entity){ >eQr<-8
getHibernateTemplate().update(entity); ^|~mlY@w
} #AkV/1Y
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publicvoid delete(finalObject entity){ !l?.5Pm])
getHibernateTemplate().delete(entity); $4kH3+WJ
} 8I20*#
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publicObject load(finalClass entity, k %e^kej
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finalSerializable id){ :o-,SrORM
return getHibernateTemplate().load QZp6YSz.4
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(entity, id); K5ZC:Ks
} S1Z2_V
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publicObject get(finalClass entity, _R'Fco
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finalSerializable id){ Q)m4_+,d
return getHibernateTemplate().get ?&G`{Ey
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(entity, id); T{wpJ"F5<]
} Ac2(O6
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publicList findAll(finalClass entity){ cMyiW$;
return getHibernateTemplate().find("from Q$& sTM
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" + entity.getName()); fx=Awba
} P./V6i<:
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publicList findByNamedQuery(finalString mpAR7AG6
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namedQuery){ >EL)X
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return getHibernateTemplate hT$~ygQ
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().findByNamedQuery(namedQuery); H9h@ sSg
} ^4r73ak/):
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publicList findByNamedQuery(finalString query, 4c
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finalObject parameter){ GoA4f3
return getHibernateTemplate
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().findByNamedQuery(query, parameter); gmIqT
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} /27JevE
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publicList findByNamedQuery(finalString query, /{wJEuE
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finalObject[] parameters){ Hsih[f
return getHibernateTemplate QK0h6CX
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().findByNamedQuery(query, parameters); ju}fL<