Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 508v:?^'
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ^M0
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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 zc K`hS
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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 ]lqLC
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分页支持类: Y7BmW+
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java代码: a`I
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package com.javaeye.common.util; o, PpD,,
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import java.util.List; {>g{+Eq
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publicclass PaginationSupport { z.lIlp2:
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publicfinalstaticint PAGESIZE = 30; 9k/L m
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privateint pageSize = PAGESIZE; C cPOK2
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privateList items; A*G ~#v^
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privateint totalCount; 1%ENgb:8
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privateint[] indexes = newint[0]; H-\Ym}BGu
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privateint startIndex = 0; &+ "<ia(
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public PaginationSupport(List items, int 1_WP\@O
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totalCount){ ;* QK^ #
setPageSize(PAGESIZE); y4U|~\]
setTotalCount(totalCount); ~[%_]/#&%z
setItems(items); ncqAof(/
setStartIndex(0); AXF
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public PaginationSupport(List items, int x$;RfK2&p
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totalCount, int startIndex){ Dj>eAO>
setPageSize(PAGESIZE); djH&)&q!
setTotalCount(totalCount); }yVx"e)
setItems(items); :_}xN!9LA
setStartIndex(startIndex); k4a51[SYBK
} 4sRM"w;
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public PaginationSupport(List items, int z%S$~^=b
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totalCount, int pageSize, int startIndex){ w"5Eyz-eO
setPageSize(pageSize); ~m_{&,CA.
setTotalCount(totalCount); `;Ho<26
setItems(items); yts@cd`$
setStartIndex(startIndex); R2v9gz;W
} 3~{I/ft
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publicList getItems(){ ?a#Gn2
return items; _V4O#;%?
} !KMl'kswe:
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publicvoid setItems(List items){ /jNvHo^B
this.items = items; ! ui
} ^3[_4av
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publicint getPageSize(){ *?BY+0
return pageSize; +j{(NwsX
} TG[u3Y4
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publicvoid setPageSize(int pageSize){ rRg,{:;A
this.pageSize = pageSize; D'<L6w`
} R\|,GZ!`+
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publicint getTotalCount(){ ]XU4nNi
return totalCount;
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} |Fe[RGi+8
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publicvoid setTotalCount(int totalCount){ aX`uF<c9
if(totalCount > 0){ V:w%5'^3
this.totalCount = totalCount; ?TeozhUY
int count = totalCount / b3EGtC}^
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pageSize; ?HJh;96B
if(totalCount % pageSize > 0) j*@@H6G
count++; jB8Q% {%
indexes = newint[count]; ele@xl
for(int i = 0; i < count; i++){ <Xl#}6II
indexes = pageSize * x(._?5
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} "h#R>3I1)
}else{ Wk\(jaL%
this.totalCount = 0; GA[Ebzi
} ydy TDn
} g]lEG>y1R
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publicint[] getIndexes(){ u
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return indexes; &nP0T-T5y
} gE _+r
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publicvoid setIndexes(int[] indexes){ /1MmOB
this.indexes = indexes; "aOs#4N
} RqgN<&g?
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publicint getStartIndex(){ kzKej"a;
return startIndex; 2uOYuM[7gH
} (oi:lC@h*
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publicvoid setStartIndex(int startIndex){ \rFS^#
if(totalCount <= 0) Ww,\s5Uw
this.startIndex = 0; }9+;-*m/
elseif(startIndex >= totalCount) uR ?W|a
this.startIndex = indexes -T,?'J0 2
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[indexes.length - 1]; &1$d`>fn
elseif(startIndex < 0) r|EN 5
this.startIndex = 0; R3~,&ab
else{ B:Ts_9*
this.startIndex = indexes J-hJqR*;K
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[startIndex / pageSize]; H:@hCO[a
} >E>yA d
} HEBeJ2w
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publicint getNextIndex(){ @khFk.LBD
int nextIndex = getStartIndex() + x"{aO6M
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pageSize; =0pt-FQ
if(nextIndex >= totalCount) wAKHD*M)
return getStartIndex(); f`n4'dG
else Z^_qXerjP
return nextIndex; !?nbB2,
} hyH[`wiq
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publicint getPreviousIndex(){ m+0yf(w
int previousIndex = getStartIndex() - #RBrii-,
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pageSize; :j]1wp+
if(previousIndex < 0) C(ij_>
return0; wb0$FZzh
else s*k)h,\
return previousIndex; j6GIB_
} a_RY Yj
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} )A\
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抽象业务类 sp,-JZD
java代码: oX|T&"&
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/** 1Cw]~jh
* Created on 2005-7-12 }R%H?&P
*/ aUaeK(x:H
package com.javaeye.common.business; 6kYluV+j
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import java.io.Serializable; {y9G
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import java.util.List; z&6_}{2,]
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import org.hibernate.Criteria; $*ff]>#
import org.hibernate.HibernateException; N&HI)X2&
import org.hibernate.Session; >v]^nJl
import org.hibernate.criterion.DetachedCriteria; iH8we,s'
import org.hibernate.criterion.Projections; N d].(_
import ubwM*P
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org.springframework.orm.hibernate3.HibernateCallback; GC')50T J
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org.springframework.orm.hibernate3.support.HibernateDaoS =Hg!@5]H
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upport; l7|z]v-
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import com.javaeye.common.util.PaginationSupport; 3vY-;&
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public abstract class AbstractManager extends BU:;;iV8
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HibernateDaoSupport { 8A#,*@V[
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privateboolean cacheQueries = false; MgeC-XQM
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privateString queryCacheRegion; Tn&