Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 $^u}a
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 2G$SpfeIu
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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 ,-x!$VqS
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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 $$:ZX
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分页支持类: SIBoCs5
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java代码: \!]Ua.e<
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package com.javaeye.common.util; hhoEb(BA
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import java.util.List; GGhM;%H_99
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publicclass PaginationSupport { %OgS^_tu
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publicfinalstaticint PAGESIZE = 30; $}")1|U,X
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privateint pageSize = PAGESIZE; kB5.(O
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privateList items; p ?wI9GY
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privateint totalCount; ?g!V!VS2
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privateint[] indexes = newint[0]; ~=R SKyzt
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privateint startIndex = 0; }I`a`0/
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public PaginationSupport(List items, int oK{ V7
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totalCount){ oD}uOC}FS{
setPageSize(PAGESIZE); E( us'9c
setTotalCount(totalCount); vkLC-Mzm<
setItems(items); m Sk5u 7
setStartIndex(0); lO2[JP
} E^U0f/5
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public PaginationSupport(List items, int y4+;z2'>
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totalCount, int startIndex){ |yo\R{&6
setPageSize(PAGESIZE); V.wqZ {G
setTotalCount(totalCount); 64:fs?H
setItems(items); mo~*C
setStartIndex(startIndex); p }[zt#v
} =_YG#yS
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public PaginationSupport(List items, int
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totalCount, int pageSize, int startIndex){ /c):}PJ^#7
setPageSize(pageSize); 4Jx"A\5*G
setTotalCount(totalCount); PqM1aoyX
setItems(items); )}9rwZ
setStartIndex(startIndex); xC
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} u4Em%:Xj
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publicList getItems(){ b,8{ X<
return items; qC'{;ko
} _HhbIU
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publicvoid setItems(List items){ xeGb?DPu
this.items = items; \c^45<G2qA
} V]90
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publicint getPageSize(){ v@# b}N0n
return pageSize; 3]?#he
} %Qk/_ R1
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publicvoid setPageSize(int pageSize){ |>z3E z
this.pageSize = pageSize; G9JAcO1
} (rg;IXAq%
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publicint getTotalCount(){ ZoArQ(YFy
return totalCount; sUE?v9
} &>H!}"Yk
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publicvoid setTotalCount(int totalCount){ x`6<m!d`
if(totalCount > 0){ ]vuwkn+)
this.totalCount = totalCount; r_;9'#&'
int count = totalCount / /rSH"$
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pageSize; TwgrRtj'
if(totalCount % pageSize > 0) : _QCfH
count++; }%D^8>S
indexes = newint[count]; LY+|[qka
for(int i = 0; i < count; i++){ `Qeg
indexes = pageSize * VE8;sGaJ
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} @O[5M2|r
}else{ N]RZbzK_5G
this.totalCount = 0; =Fdg/X1
} @Vu(XG
} MTUn3;c/
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publicint[] getIndexes(){ (e"iO`H
return indexes; t'ZWc\
} H<1WbM:w
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publicvoid setIndexes(int[] indexes){ >|;aIa@9
this.indexes = indexes; MeUaTJFEB
} ?mlNL/:
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publicint getStartIndex(){ E}ZJ)V7
return startIndex; 0:b2(^]bg
} RVeEkv[qp
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publicvoid setStartIndex(int startIndex){ }K3x
if(totalCount <= 0) >a}f{\Q
this.startIndex = 0; <vwkjCA`
elseif(startIndex >= totalCount) Onwp-!!.
this.startIndex = indexes @Pt="*g
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[indexes.length - 1]; ]7e =fM9V;
elseif(startIndex < 0) hqRw^2F
this.startIndex = 0; u,6~qQczE
else{ }3?n~s\)6f
this.startIndex = indexes \_B[{e7z
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[startIndex / pageSize]; Qca&E`~Q
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} 2,*M|+W~
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publicint getNextIndex(){ `hb%+-lj+
int nextIndex = getStartIndex() + D::rGB?.b
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pageSize; yiO.z
if(nextIndex >= totalCount) F8apH{&t
return getStartIndex(); []D@Q+1
else 2p"WTd
return nextIndex; ^yOZArc'r
} 4R\Hpt
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publicint getPreviousIndex(){ [Jv@J\
int previousIndex = getStartIndex() - =%/)m:f!^
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pageSize; GI&h`X5,e
if(previousIndex < 0) KVJ_E!i
return0; y99mC$"Ee`
else 6R^^ .tCs
return previousIndex; 8-O)Xx}cU
} LGtIm7
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} cb}[S:&|
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抽象业务类 D
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java代码: ,I,\ml
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/** #{\%rWnCm
* Created on 2005-7-12 /Sh#_\x
*/ 6AhM=C
package com.javaeye.common.business; ' <=+;q
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import java.io.Serializable; yNbjoFM.i
import java.util.List; )>Yu!8i
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import org.hibernate.Criteria; is-7
j7;
import org.hibernate.HibernateException; *I0T{~
import org.hibernate.Session; hyFyP\u]
import org.hibernate.criterion.DetachedCriteria; z5YWt*nm
import org.hibernate.criterion.Projections; {yExQbN
import %QP0
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org.springframework.orm.hibernate3.HibernateCallback; .qZI$
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org.springframework.orm.hibernate3.support.HibernateDaoS r%+V8o
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upport; aYSCw3C<
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import com.javaeye.common.util.PaginationSupport; _/tHD]um
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public abstract class AbstractManager extends tw9f%p
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HibernateDaoSupport { B]l)++~
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privateboolean cacheQueries = false; sc,vj'r
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