Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 'n>v}__&|
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 4Y2!q$}I+
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 (~6D`g`B
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 "^Ax}Jr
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分页支持类: lpy(un
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java代码: T{USzMj
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package com.javaeye.common.util; j(QK 0 "z
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import java.util.List; m,Fug1+N
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publicclass PaginationSupport { 8l50@c4UF~
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publicfinalstaticint PAGESIZE = 30; .|VWYN
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privateint pageSize = PAGESIZE; u ?
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privateList items; /c&;WlE/n
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privateint totalCount; Ft[)m#Dj`
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privateint[] indexes = newint[0]; 38gHM9T
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privateint startIndex = 0; G-DvM6T
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public PaginationSupport(List items, int dsUt[z1w5
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totalCount){ ZLS\K/F>>=
setPageSize(PAGESIZE); =o+js;3
setTotalCount(totalCount); z'!sc"]W6
setItems(items); Ec/-f`8
setStartIndex(0); mu>L9Z~(L_
} i?+>,r@\p
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public PaginationSupport(List items, int >!gW]{
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totalCount, int startIndex){ `{B<|W$=
setPageSize(PAGESIZE); W]-c`32~S
setTotalCount(totalCount); vJ a?5Jr
setItems(items); *#| lhf'
setStartIndex(startIndex); VGVb3@
} ImG7E
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public PaginationSupport(List items, int R #\o*Ta
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totalCount, int pageSize, int startIndex){ a9sbB0q-K@
setPageSize(pageSize); %u@}lG k
setTotalCount(totalCount); k0e {c
setItems(items); \G~<O071
setStartIndex(startIndex); {Rv0@)P$
} XZew$Om[
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publicList getItems(){ qJyGr ?
return items; "?f_U/+D<
} jg3X6 /'
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publicvoid setItems(List items){ "Ei' FM
this.items = items; BM+>.
} +ak<yV1=
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publicint getPageSize(){ r/e} DYL&
return pageSize; GX@=b6#-
} O~bJ<O=?
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publicvoid setPageSize(int pageSize){ _enS_R
this.pageSize = pageSize; gc"A Tc
} 9u^ yEqG`
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publicint getTotalCount(){ FDQP|,
return totalCount; f.{/PL
} &~MM\,KML
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publicvoid setTotalCount(int totalCount){ }^"#&w3<
if(totalCount > 0){ ysDGF@wZC
this.totalCount = totalCount; 62Q`&n6
int count = totalCount / enB2-)<K
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pageSize; |jw{7\+
if(totalCount % pageSize > 0) p8bAz
count++; f$I$A(0P
indexes = newint[count]; y=k!>Y|E
for(int i = 0; i < count; i++){ -q")qNt.
indexes = pageSize * ig}H7U2q@
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} pY"&=I79tb
}else{ &3~_9+
this.totalCount = 0; ;]A:(HSZj
} U+7!Vpq
} hI}rW^o^
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publicint[] getIndexes(){ 0WO-+eRB/
return indexes; %&\DCAFk
} X6SqOb\(a
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publicvoid setIndexes(int[] indexes){ O[|prk,
this.indexes = indexes; u[b0MNE~
} .'Rz
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publicint getStartIndex(){ 'ngx\Lr
return startIndex; 7a5G,C#QQ
} _fmOTz G
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publicvoid setStartIndex(int startIndex){ J=7<dEm&
if(totalCount <= 0) f
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this.startIndex = 0; 227 Z6#CF!
elseif(startIndex >= totalCount) 3Jj 3!aDB
this.startIndex = indexes ^oH!FN`;{
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[indexes.length - 1]; yh{Wuz=T
elseif(startIndex < 0) VcpN
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this.startIndex = 0; LP:U6 Z
else{ Ew$-,KC[
this.startIndex = indexes OtD!@GQ6
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[startIndex / pageSize]; E
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} VU ,tCTXz
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publicint getNextIndex(){ 6 ,j&u7
int nextIndex = getStartIndex() + Hr/3nq}.
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pageSize; ~9h/{$
if(nextIndex >= totalCount) yIG*
return getStartIndex(); 0OF ]|hH
else nA 5-P}
return nextIndex; LAcK%
} Y>a2w zr
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publicint getPreviousIndex(){ IKVS7m
int previousIndex = getStartIndex() - V(6GM+
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pageSize; |\] _u 3
if(previousIndex < 0) r}~|,O3bc'
return0; d_w^u|(K
else `@#,5S$ E
return previousIndex; Qu6Q)dZ<
} ganXO5T$
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} \r^*4P,,
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抽象业务类 DY' 1#$;
java代码: * u{CnH
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/** y+K21(z.
* Created on 2005-7-12 &XH{,fv$
*/ S)~Riuy$
package com.javaeye.common.business; UCDvN
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import java.io.Serializable; ]id5jVY
import java.util.List; "F8A:tR
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import org.hibernate.Criteria; }2i3
import org.hibernate.HibernateException; 53jtwklA
import org.hibernate.Session; B}A7Usm
import org.hibernate.criterion.DetachedCriteria; n]]!:jFC
import org.hibernate.criterion.Projections; 6yRxb(
import W$_@9W(Bl
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org.springframework.orm.hibernate3.HibernateCallback; '@Q
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import oP( Hkp,'
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org.springframework.orm.hibernate3.support.HibernateDaoS qGgqAF#B
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upport; u%`4;|tI
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import com.javaeye.common.util.PaginationSupport; 2(Ez
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public abstract class AbstractManager extends @vcvte
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HibernateDaoSupport { U3zwC5}BN
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privateboolean cacheQueries = false; ?]bZ6|;2
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privateString queryCacheRegion; d,0Yi
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publicvoid setCacheQueries(boolean k2S6 SB
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cacheQueries){ hc4W|Ofj
this.cacheQueries = cacheQueries; ND|!U#wMNV
} DTw3$:
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publicvoid setQueryCacheRegion(String 1]lm0bfs
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queryCacheRegion){ ]/y&5X
this.queryCacheRegion = 3#@ETt0X(
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queryCacheRegion; "jyh.@<
} 38hA guZX
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publicvoid save(finalObject entity){ 8}0O @ wq
getHibernateTemplate().save(entity); Y=#g_(4*
} TLk=HGw
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publicvoid persist(finalObject entity){ 1Lf:TQB
getHibernateTemplate().save(entity); [|\JIr=of5
} e2v[ma-
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publicvoid update(finalObject entity){ !a[1rQH
getHibernateTemplate().update(entity); ]zza/O;31(
} oKJj?%dHK9
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publicvoid delete(finalObject entity){ e Ert_@}
getHibernateTemplate().delete(entity); K 8gd?88
}
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publicObject load(finalClass entity, [ Yzh(a8
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finalSerializable id){ fdD?"z
return getHibernateTemplate().load 1o;+.]B
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(entity, id); s C9j73vf
} ]tVU$9D
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publicObject get(finalClass entity, ">G|\_ZF
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finalSerializable id){ 'j)xryw
return getHibernateTemplate().get 0.~Pzg
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(entity, id); !6pOY*> j
} 'y
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publicList findAll(finalClass entity){ ^+JpI*,
return getHibernateTemplate().find("from }/yhwijg
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" + entity.getName()); |8$x
} (= H%VXQH
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publicList findByNamedQuery(finalString O6^>L0'
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namedQuery){ _U.D*f<3)
return getHibernateTemplate n+M:0{Y|
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().findByNamedQuery(namedQuery); dooS|Mq
} 4dXuy>Km
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publicList findByNamedQuery(finalString query, );wSay>%(
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finalObject parameter){ ?=B$-)/
return getHibernateTemplate #cqia0.H
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().findByNamedQuery(query, parameter); Hb KJ&^
} gL(ny/Ob9
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publicList findByNamedQuery(finalString query, W27EU/+3
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finalObject[] parameters){ ec:?Q0
return getHibernateTemplate ISI\<qx
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().findByNamedQuery(query, parameters); ;^}gC}tq
} #7IM#tc@
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publicList find(finalString query){ r=<Oy1m/
return getHibernateTemplate().find 1nb]~{l
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(query); :=BFx"Y
} 9Xt5{\PJ
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publicList find(finalString query, finalObject TC80nP
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parameter){ m]8rljo
return getHibernateTemplate().find kzqW&`xn?
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(query, parameter); Gpws_jw
} QCFLi n+r
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public PaginationSupport findPageByCriteria 05mjV6j7m
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(final DetachedCriteria detachedCriteria){ PpD ?TAlA
return findPageByCriteria nc#}-}`5
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 3%Z:B8:<