Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 c-bTf$6}
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Gjo&~*;
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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 l\1_v7s
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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 WiCJhVF3
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分页支持类: Jqgo\r%`
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java代码: N"&qy3F
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package com.javaeye.common.util; \K(QE ~y'W
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import java.util.List; |g8Q.*"l[
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publicclass PaginationSupport { 1n|K
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publicfinalstaticint PAGESIZE = 30; i $;y
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privateint pageSize = PAGESIZE; R?H[{AX
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privateList items; NncII5z
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privateint totalCount; 7/GL@H
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privateint[] indexes = newint[0]; F=r`'\JV[
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privateint startIndex = 0; h^=9R6im
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public PaginationSupport(List items, int +DA,|~k_
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totalCount){ 4&+lc*
setPageSize(PAGESIZE); GP;UuQz
setTotalCount(totalCount); &1$|KbmV4
setItems(items); a7wc>@9Q,
setStartIndex(0); U#
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} d0 qc%.s
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public PaginationSupport(List items, int ;J&9l
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totalCount, int startIndex){ Ul%D}(,
setPageSize(PAGESIZE); '(!U5j
setTotalCount(totalCount); N(=\S:
setItems(items); 8$C?j\J|*
setStartIndex(startIndex); wA?q/cw C
} 1JWo~E'
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public PaginationSupport(List items, int
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totalCount, int pageSize, int startIndex){ Ki(
setPageSize(pageSize); \1mTKw)S
setTotalCount(totalCount); k~HS_b*]d
setItems(items); {axMS yp;
setStartIndex(startIndex); vfPIC!
} )2mvW1M=7;
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publicList getItems(){ _W^{,*p
return items; v"J7VF2
} wC~LZSTt
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publicvoid setItems(List items){ bFtzwa5Gc
this.items = items; p{S#>JTr
} n06Jg+
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publicint getPageSize(){ )R@M~d-o
return pageSize; fNaboNj[
} )h,-zAnZ
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publicvoid setPageSize(int pageSize){ |+r5D4]e
this.pageSize = pageSize; <Pg<F[eDM
} IBSoAL
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publicint getTotalCount(){ z)0%gd|
return totalCount; Z|IFT1K
} WuUT>omH
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publicvoid setTotalCount(int totalCount){ gi5Ffvs$
if(totalCount > 0){ Z&Ao;=Gp1
this.totalCount = totalCount; VaLl$w
int count = totalCount / }Asp=<kCc
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pageSize; ~zD*=h2C
if(totalCount % pageSize > 0) 7R5!(g
count++; EGIwqci:
indexes = newint[count]; @(_f}SgfE
for(int i = 0; i < count; i++){ |?Bb{Es
indexes = pageSize * aT`. e
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} a-Ef$(i_
}else{ z }f;_NX
this.totalCount = 0; \r7gubD
} bf&k:.v'8
} c`x[C
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publicint[] getIndexes(){ 4,P!D3SH
return indexes; qk=0ovUzg
} ;|H(_J=6k
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publicvoid setIndexes(int[] indexes){ y_A?}'X
this.indexes = indexes;
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} !-Br?
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publicint getStartIndex(){ `.F+T)G
return startIndex; SdOE^_@:
} j+7ok 5J#
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publicvoid setStartIndex(int startIndex){ yNkE>
if(totalCount <= 0) kFsq23Ne
this.startIndex = 0; U**v'%{s
elseif(startIndex >= totalCount) 4C[n@p2
this.startIndex = indexes hDc)\vzr
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[indexes.length - 1]; GYM6 `
elseif(startIndex < 0) >h<bYk "9Q
this.startIndex = 0; Isna
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else{ AiE\PMF~{P
this.startIndex = indexes s#2<^6
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[startIndex / pageSize]; 4bZ
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} .e8S^lSl
} Owz.C_{)
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publicint getNextIndex(){ 'I *&P5|
int nextIndex = getStartIndex() + p&4#9I5
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pageSize; jtFet{
if(nextIndex >= totalCount) {P>%l\?
return getStartIndex(); XOi[[G}
else m"RE[dQ
return nextIndex; >iIUS
} ":upo/xN
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publicint getPreviousIndex(){ mbm|~UwD
int previousIndex = getStartIndex() - ?=X_a{}/
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pageSize; ezR!ngt
if(previousIndex < 0) NDaM;`
return0; "-;l{tL
else EFKOElG(k
return previousIndex; zu-1|XX
} WJN}d-S=^
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} ,BCo/j
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抽象业务类 OK"B`*
java代码: P Zc{wbjp&
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/** u/8urxpy
* Created on 2005-7-12 lC&B4zec
*/ /P-Eg86V'
package com.javaeye.common.business; umo@JWr
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import java.io.Serializable; CN"hx-f
import java.util.List; ugI9rxT]Kv
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import org.hibernate.Criteria; h&4f9HhS=
import org.hibernate.HibernateException; -n `igC
import org.hibernate.Session; HRY?[+
import org.hibernate.criterion.DetachedCriteria; CL-mt5Kx#7
import org.hibernate.criterion.Projections; {,aI0bw;
import 7>`VZ?
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org.springframework.orm.hibernate3.HibernateCallback; $M T'ZM
import Ka"Z,\T
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org.springframework.orm.hibernate3.support.HibernateDaoS &4ScwK:
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upport; =(~UK9`
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import com.javaeye.common.util.PaginationSupport; {LLy4m
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public abstract class AbstractManager extends M9/c8zZ
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HibernateDaoSupport { 8,,$C7"EP
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privateboolean cacheQueries = false; 7.o:(P1??g
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privateString queryCacheRegion; 6O>GVJbw
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publicvoid setCacheQueries(boolean ( IXe555
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cacheQueries){ =k1 ,jn+
this.cacheQueries = cacheQueries; d,G:+
} vNhi5EU
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publicvoid setQueryCacheRegion(String O,kzU,zOs
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queryCacheRegion){ {i7Wp$ug
this.queryCacheRegion = L.uX
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queryCacheRegion; ORV~F0d<
} |nN{XjNfP5
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publicvoid save(finalObject entity){ to1{7q
getHibernateTemplate().save(entity); >_Dq )n;%
} D9;2w7v
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publicvoid persist(finalObject entity){ RN1q/H|
getHibernateTemplate().save(entity); +%'S>g0W=
} cVt
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publicvoid update(finalObject entity){ G 1rsd
getHibernateTemplate().update(entity); N;9m&)@JR'
} #-_';Er\
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publicvoid delete(finalObject entity){ k|$08EK $
getHibernateTemplate().delete(entity); >Q$, } `U;
} 4E`y*Hmzy+
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publicObject load(finalClass entity, +ou
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finalSerializable id){ b3G4cO;t;
return getHibernateTemplate().load iINd*eXb^
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(entity, id); I6x
} HWJ(O/N
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publicObject get(finalClass entity, fWx
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finalSerializable id){ mTcop yp
return getHibernateTemplate().get 6q[|U_3I@
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(entity, id); I+,~pmn:
} <n4T*
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publicList findAll(finalClass entity){ [X'XxYbZ
return getHibernateTemplate().find("from /Q4TQ\:
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" + entity.getName()); .5ap9li]
} DD3.el}6a
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publicList findByNamedQuery(finalString TBN0u k
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namedQuery){ x=g=e
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return getHibernateTemplate RKu'WD?sdH
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().findByNamedQuery(namedQuery); ^t&S?_DSZ
} d{cd+An
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publicList findByNamedQuery(finalString query, B?
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finalObject parameter){ $4^cbk
return getHibernateTemplate =IQ+9Fl2
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().findByNamedQuery(query, parameter); "@1e0`n
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} CdCo+U5z{
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publicList findByNamedQuery(finalString query, eI8rnp(Ia
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finalObject[] parameters){ rBd}u+:*
return getHibernateTemplate "P)f,n
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().findByNamedQuery(query, parameters); sN`2"t/s
} I}djDtJ
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publicList find(finalString query){ +gZg7]!Z
return getHibernateTemplate().find #k%$A}9
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(query); Hc`)Q vFRW
} !~+"TI}_%w
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publicList find(finalString query, finalObject Aofk< O!M
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parameter){ @>Y.s6a
return getHibernateTemplate().find &cnciEw1
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(query, parameter); 3uSj5+@q6
} td*1
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public PaginationSupport findPageByCriteria ^P4q6BW
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(final DetachedCriteria detachedCriteria){ !S0$W?*
return findPageByCriteria K4\{G
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); K`7(*!HEb
} 4+rr3 $AY
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public PaginationSupport findPageByCriteria F];"d0O#5
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(final DetachedCriteria detachedCriteria, finalint [1+ o
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startIndex){ ,8~qnLy9
return findPageByCriteria 'Z(KE2&?
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(detachedCriteria, PaginationSupport.PAGESIZE, Gjhpi5?%8
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startIndex); RO>3U2
} uY{zZ4iw
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public PaginationSupport findPageByCriteria Un[olp
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(final DetachedCriteria detachedCriteria, finalint \"L
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pageSize, /y8=r"'G
finalint startIndex){ $1aJdZC7
return(PaginationSupport) 4RPc&%
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getHibernateTemplate().execute(new HibernateCallback(){ xEW>7}+\
publicObject doInHibernate <c`+ fPW
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(Session session)throws HibernateException { $<;!F=%8
Criteria criteria = (T290a9y>
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detachedCriteria.getExecutableCriteria(session); Gi=sJV
int totalCount = BHmmvbM#Qm
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((Integer) criteria.setProjection(Projections.rowCount Pu|PIdu!08
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()).uniqueResult()).intValue(); +JyD W%a:L
criteria.setProjection ~>&