Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 f]tc$`vb
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 +?5nkhH
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 y
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 _Y4%Fv>@
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分页支持类: Z
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java代码: ~e~iCyW;S
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package com.javaeye.common.util; tY-{uHW&h
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import java.util.List; 8
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publicclass PaginationSupport { vn}:$|r$J
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publicfinalstaticint PAGESIZE = 30; 7E*d>:5I
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privateint pageSize = PAGESIZE; `rzgC \
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privateList items; hg_@Ui@[z
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privateint totalCount; ;i\m:8!;
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privateint[] indexes = newint[0]; ~Wp>tnl
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privateint startIndex = 0; i1v0J->
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public PaginationSupport(List items, int oswS<t{Z
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totalCount){ 0"]N9N;/
setPageSize(PAGESIZE); ;^za/h>r
setTotalCount(totalCount); M >#kfSF+
setItems(items); X-%XZDB6
setStartIndex(0); ^"WrE(3
} 0Ah'G
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public PaginationSupport(List items, int &sleV5V
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totalCount, int startIndex){ {gT2G*Ed^Z
setPageSize(PAGESIZE); ^iAOz-H
setTotalCount(totalCount); \ws<W7
setItems(items); \yP\@cpY{
setStartIndex(startIndex); %g1:yx
} 't'~p#$,F
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public PaginationSupport(List items, int |giV<Sj
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totalCount, int pageSize, int startIndex){ LxaR1E(Cc'
setPageSize(pageSize); CBz$N) f
setTotalCount(totalCount); *Y8nea^$
setItems(items); T|RW-i3
setStartIndex(startIndex); w7aC=B/{?i
} <2@V$$Qg.~
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publicList getItems(){ ;/T=ctIs
return items; N) D;)ZH
} n\Y{?x
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publicvoid setItems(List items){ P/uk]5H^
this.items = items; OIPJN8V
} \@8j&],dl
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publicint getPageSize(){ ',`GdfAsH
return pageSize; Y~@@{zP
} EF1aw2
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publicvoid setPageSize(int pageSize){ yzJ
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this.pageSize = pageSize; \1x<bx/1
} RS'!>9I
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publicint getTotalCount(){ d/oxRzk'L
return totalCount; ,ND}T#yTR
} +72[*_ <
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publicvoid setTotalCount(int totalCount){ CJ0{>?
if(totalCount > 0){ +
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this.totalCount = totalCount; 4mNg(w=NF
int count = totalCount / v53qpqc
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pageSize; [AgS@^"sf5
if(totalCount % pageSize > 0) 6bj.z
count++; GddP)l{uCF
indexes = newint[count]; gYb}<[O!
for(int i = 0; i < count; i++){ zq\YZ:JC
indexes = pageSize * %^1@c f?.
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} 24;F~y8H
}else{ Npu#.)G
this.totalCount = 0; w#ha ^4
} |j3fS[.$
} iBlZw%zKP
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publicint[] getIndexes(){ Hqsj5j2i
return indexes; ;Oh abbj*
} liu%K9-r
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publicvoid setIndexes(int[] indexes){ x""gZzJ$L
this.indexes = indexes; ]r6S|;:
} e6O +hC]:
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publicint getStartIndex(){ %OS}BAh^i
return startIndex; T4H/D^X|
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publicvoid setStartIndex(int startIndex){ Z+# =]Kw)
if(totalCount <= 0) `R\aNgCS}
this.startIndex = 0; %5) 1^
elseif(startIndex >= totalCount) W+F{!dW
this.startIndex = indexes (~}P.?C8
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[indexes.length - 1]; ="yN4+0-p
elseif(startIndex < 0) 2@&|/O6_\h
this.startIndex = 0; ?ykQ]r6a<
else{ Io8h 8N-
this.startIndex = indexes dS+/G9X^
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[startIndex / pageSize]; v$H=~m
} iR_j
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publicint getNextIndex(){ e7T}*Up
int nextIndex = getStartIndex() + }(*eR F'
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pageSize; ao+lLCr
if(nextIndex >= totalCount) \w;d4r8x
return getStartIndex(); QL_vWG-
else )9oF?l^q
return nextIndex; `a$c6^a
} Rw
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publicint getPreviousIndex(){ -^R6U~
int previousIndex = getStartIndex() - c8@zpkMj/
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pageSize; pZVT:qFF
if(previousIndex < 0) WNO|ziy
return0; vS@;D7ep
else SC Qr/Q
return previousIndex; `f|Gw5R
} sf7~hN*
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} <6!;mb
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抽象业务类 80'!XKSP
java代码: >TKl`O
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/** 3|se]~
* Created on 2005-7-12 EuJ_UxkG
*/ o0Z~9iF&
package com.javaeye.common.business; 6_&uYA<8pE
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import java.io.Serializable; tCF,KP?
import java.util.List; ]"wl*$N
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import org.hibernate.Criteria; ;Xr|['\'
import org.hibernate.HibernateException; p;x3gc;0
import org.hibernate.Session; ji&%'h
import org.hibernate.criterion.DetachedCriteria; m9Pzy^g1
import org.hibernate.criterion.Projections; e`7dRnx&0
import ?=},%^
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org.springframework.orm.hibernate3.HibernateCallback; [(O*W
import .Fl5b}C(
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org.springframework.orm.hibernate3.support.HibernateDaoS
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import com.javaeye.common.util.PaginationSupport; LQo>wl
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public abstract class AbstractManager extends #~JR_oQE!
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HibernateDaoSupport { ,q".d =6
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privateboolean cacheQueries = false; yGs:3KI
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privateString queryCacheRegion; g'pB<?'E'
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publicvoid setCacheQueries(boolean 9 aacW
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cacheQueries){ PF+SHT'4}#
this.cacheQueries = cacheQueries; [
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} b\.l!v n0
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publicvoid setQueryCacheRegion(String 3
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queryCacheRegion){ Z37%jdr
this.queryCacheRegion = l`b%imX
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