Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 W]}V<S$
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 e, 0I~:
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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 Ww
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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
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分页支持类: _%Ld
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java代码: Bt7v[Ot
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package com.javaeye.common.util; )9 jQ_
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import java.util.List;
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publicclass PaginationSupport { Bg0cC
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publicfinalstaticint PAGESIZE = 30; v!h-h&p O7
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privateint pageSize = PAGESIZE; swq!Sp
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privateList items; *`.{K12T
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privateint totalCount; I8]NY !'cW
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privateint[] indexes = newint[0]; -?1J+}?
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privateint startIndex = 0; j:KQIwc
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public PaginationSupport(List items, int emPm^M5/K
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totalCount){ J\D3fh97-
setPageSize(PAGESIZE); (+ anTA=
setTotalCount(totalCount); .LR>&N _U
setItems(items); E"&9FxS]^
setStartIndex(0); m9cT}x&j
}
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public PaginationSupport(List items, int lB~'7r`
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totalCount, int startIndex){ 't.F.t
setPageSize(PAGESIZE); d( g_y m*
setTotalCount(totalCount); ]sAD5<;
setItems(items); T["(YFCByg
setStartIndex(startIndex); S9oGf
} nW'x#0-
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public PaginationSupport(List items, int hO@3-SRa,k
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totalCount, int pageSize, int startIndex){ <t37DnCgI
setPageSize(pageSize); (SA*9%
setTotalCount(totalCount); F
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setItems(items); !I_4GE,
setStartIndex(startIndex); :q1r2&ne
} {?hjx+v[
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publicList getItems(){ X-FHJ4
return items; oH"N>@ Vl
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publicvoid setItems(List items){ y8z%s/gRh
this.items = items; ]#n4A|&H
} H]X)@n>
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publicint getPageSize(){ Zh^w)}(W
return pageSize; e*H$c?7NL
} nVzo=+Yp
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publicvoid setPageSize(int pageSize){ BUyA]
this.pageSize = pageSize; P7-3Vf_L
} xK3;/!\`
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publicint getTotalCount(){ sXu+F2O
return totalCount; J]B5w{??b
} <@u6*]
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publicvoid setTotalCount(int totalCount){ e
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if(totalCount > 0){ H
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this.totalCount = totalCount; U w"
int count = totalCount / 4>* `26
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pageSize; Kq$1lPI
if(totalCount % pageSize > 0) {wI0 =U
count++; C.<4D1}P
indexes = newint[count]; 9OUhV[D
for(int i = 0; i < count; i++){ 3yN1cd"#?
indexes = pageSize * YPl{5=
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} O5
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}else{ Ek3O{<
this.totalCount = 0; |:z%7J3wP
} 4<|u~n*JF
} Za w+
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publicint[] getIndexes(){ xh0!H|
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return indexes; R9(^CWs
} |4vk@0L
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publicvoid setIndexes(int[] indexes){ Dg`W{oj
this.indexes = indexes; ^^#A9AM
} \Z8!iruN
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publicint getStartIndex(){ ?W()Do1tR
return startIndex; bPNsy@"6
} i+}M#Y-O
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publicvoid setStartIndex(int startIndex){ r_G`#Z_5F
if(totalCount <= 0) /1*\*<cs
this.startIndex = 0; Eq
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elseif(startIndex >= totalCount) ScEM#9T |
this.startIndex = indexes xQQ6D
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[indexes.length - 1]; ZD3S|1zSQ
elseif(startIndex < 0) WVZ\4y
this.startIndex = 0; _>s.V`N'
else{ -Db(
this.startIndex = indexes &PbH!]yd
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[startIndex / pageSize]; BtspnVBez
} >|<6s],v
} ~jgd92`{z
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publicint getNextIndex(){ C4y<+G.`
int nextIndex = getStartIndex() + q_!3<.sf
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pageSize; --FvE|I
if(nextIndex >= totalCount) ~/t#J
return getStartIndex(); \>+gZc]an
else E>&dG:3no
return nextIndex; pcE.
} 8 _>R 'u[
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publicint getPreviousIndex(){ xaPTTa
int previousIndex = getStartIndex() - 7Ev~yY;N
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pageSize; >6Q-e$GS@
if(previousIndex < 0) \o/oM,u
return0; PWTAy\
else hSxf;>(d
return previousIndex; p0Vw@R=
} o;t{YfK
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} t ,0~5>5
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抽象业务类 f+rBIE
java代码: wEdXaOEB5
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/** 'INdZ8j_
* Created on 2005-7-12 cEe>Lyt
*/ xSw ^v6!2
package com.javaeye.common.business; Ax&+UxQ0|
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import java.io.Serializable; X4jtti
import java.util.List; Rt+s\MC^r
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import org.hibernate.Criteria; xR$xAcoSB
import org.hibernate.HibernateException; ZZ.GpB.
import org.hibernate.Session; *\emRI>
import org.hibernate.criterion.DetachedCriteria; $///N+B
import org.hibernate.criterion.Projections; f)>=.sp
import 5K,Y6I&$SJ
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org.springframework.orm.hibernate3.HibernateCallback; d>2>mT$U
import Y6+nfh_
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org.springframework.orm.hibernate3.support.HibernateDaoS -e30! A
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upport; L.>`;`dmY
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import com.javaeye.common.util.PaginationSupport; 0Y{A
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public abstract class AbstractManager extends ^dQ#\uy
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HibernateDaoSupport { 60Y&)UR
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privateboolean cacheQueries = false; @`)A)
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privateString queryCacheRegion; OX I.>9
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publicvoid setCacheQueries(boolean O",:0<
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cacheQueries){ WJ8i,7
this.cacheQueries = cacheQueries; VGkwrS;+I
} t=5K#SX}
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publicvoid setQueryCacheRegion(String Ao(Xz$cQfW
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queryCacheRegion){ IF<pT)
this.queryCacheRegion = awGI|d
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queryCacheRegion; tQF,E&Jo8
} }PD?x4
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publicvoid save(finalObject entity){ Hr:WE+'
getHibernateTemplate().save(entity); LNtBYdB`pK
} A?=g!( wB
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publicvoid persist(finalObject entity){ e+j7dmGa
getHibernateTemplate().save(entity); .hXxh)F
} W-2,QVp%
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publicvoid update(finalObject entity){ |X0h-kX4
getHibernateTemplate().update(entity); 6Gwk*%sb
} h,45-#+
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publicvoid delete(finalObject entity){ ,,OO2EgZ`
getHibernateTemplate().delete(entity); O)n"a\LD
} K}LmU{/t/
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publicObject load(finalClass entity, Y:XE4v/)@L
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finalSerializable id){ HTAJn_
return getHibernateTemplate().load e<#t]V
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(entity, id); )[i0~o[
} W$=Ad *
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publicObject get(finalClass entity, &]iiBp#2
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finalSerializable id){ 1^jGSB.%A
return getHibernateTemplate().get VyK[*kyN
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(entity, id); /I(IT=kp
} Y j;KKgk
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publicList findAll(finalClass entity){ ],V_"\ATD
return getHibernateTemplate().find("from OrNi<TY>
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" + entity.getName()); @m[q0G}
} 9!&fak_
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publicList findByNamedQuery(finalString ErnjIx:
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namedQuery){ kZ~ 0fw-
return getHibernateTemplate <b!nI
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().findByNamedQuery(namedQuery); -PPH]?],
} L|A}A[ P
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publicList findByNamedQuery(finalString query, }8`W%_Yk
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finalObject parameter){ }coSMTMv6
return getHibernateTemplate |*W_
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().findByNamedQuery(query, parameter);
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} v,Eqn8/O
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publicList findByNamedQuery(finalString query, 2[-@
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finalObject[] parameters){ iZm#
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return getHibernateTemplate 4LO4SYW7
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().findByNamedQuery(query, parameters); }ya@*jH
} 5G
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publicList find(finalString query){ IdTatE|^
return getHibernateTemplate().find qmQ}
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(query); -hL 0}Wy$N
} [&y