Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 oj -
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 qC> tni%
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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 NgDhdOB
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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 KU,SAcfR7
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分页支持类: Tse#{
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java代码: q$:7j5E
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package com.javaeye.common.util; `s}L3bR]
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import java.util.List; N!(mM;1X)
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publicclass PaginationSupport { V|MHDMD=
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publicfinalstaticint PAGESIZE = 30; X$>F78e*
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privateint pageSize = PAGESIZE; #{}?=/nJ~-
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privateList items; N l@G\_
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privateint totalCount; 9jTBLp-i#N
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privateint[] indexes = newint[0]; v`Jt+?I
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privateint startIndex = 0; gB'ajX=OA/
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public PaginationSupport(List items, int o99ExQ.
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totalCount){ O`~#X w
setPageSize(PAGESIZE); >[;W~*
setTotalCount(totalCount); -i`jS_-Cv-
setItems(items); l<+[l$0#
setStartIndex(0); 4=^_VDlpd
} P\j\p
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public PaginationSupport(List items, int W#F9Qw
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totalCount, int startIndex){ Op%OQ14$
setPageSize(PAGESIZE); ^v;)6a2
setTotalCount(totalCount); B>fZH\Y
setItems(items); Y"mFUW4
setStartIndex(startIndex); INN}xZ
} )q=F_:$
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public PaginationSupport(List items, int ^X96yj'?
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totalCount, int pageSize, int startIndex){ CeYhn\m5K0
setPageSize(pageSize); [7vV#s3kJ
setTotalCount(totalCount); G,)zn9X
setItems(items); #d@wjQ0DW
setStartIndex(startIndex); sUG!dwqqd
} KW .4 9
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publicList getItems(){ ;:6\w!fc
return items; 0vv~G\yM
} QOB^U-cW
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publicvoid setItems(List items){ TPN+jK
this.items = items; [J,.?'V
} )=5&Q
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publicint getPageSize(){ h!w::cV
return pageSize; sM-,95H
} 8%9 C<+.R
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publicvoid setPageSize(int pageSize){ yqx5_}
this.pageSize = pageSize; (GC]=
} 7X>IS#W]
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publicint getTotalCount(){ `==l2AX
return totalCount; {:1j>4m2
} v #+ECx
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publicvoid setTotalCount(int totalCount){ WE) *~5
if(totalCount > 0){ d/; tq
this.totalCount = totalCount; t /+;#-
int count = totalCount / Ev7.!
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pageSize; *JJ8\R&P0
if(totalCount % pageSize > 0) :{%[6lE^G
count++; ~IhM(Q*mO!
indexes = newint[count]; UA$IVK&{
for(int i = 0; i < count; i++){ ^ptybVo
indexes = pageSize * 8US#SI'x
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} pAy4%|(
}else{ aKj|gwo!
this.totalCount = 0; AT&K> NG
} JWb +
} =|?`5!A
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publicint[] getIndexes(){ 91]|4k93
return indexes; c>LP}PGk
} le/j!
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publicvoid setIndexes(int[] indexes){ roQI;gq^
this.indexes = indexes; LzU'6ah';5
} WGv 47i
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publicint getStartIndex(){ #tV1?q
return startIndex; M/W"M9u
} o|@0.H|
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publicvoid setStartIndex(int startIndex){ s;vt2>;q+e
if(totalCount <= 0) Ih.+-!w
this.startIndex = 0; ^77W#{ Zs
elseif(startIndex >= totalCount) VEgtN}
this.startIndex = indexes ,8 4|qI
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[indexes.length - 1]; "u6pl);G
elseif(startIndex < 0) rDWAZ<;;
this.startIndex = 0; ogFo/TKM
else{ &Sd5]r@+
this.startIndex = indexes YZf{."Opj[
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[startIndex / pageSize]; W:i Q&[f
} RhowhQ) G
} \foThLx
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publicint getNextIndex(){ )k(K/m
int nextIndex = getStartIndex() + X~r9yl>
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pageSize;
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if(nextIndex >= totalCount) x {NBhq(4
return getStartIndex(); GJ%^hr`P
else 0Q{lyu
return nextIndex; }h^
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} 1K9.3n
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publicint getPreviousIndex(){ '7'/+G'~&
int previousIndex = getStartIndex() - jF?0,g
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pageSize; DSLX/uo1
if(previousIndex < 0) 5sJ>+Rg
return0; )h]+cGM
else 7z;2J;u`n
return previousIndex; <W0(!<U
} ??/bI~Sd
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} b\"F6TF:
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抽象业务类 8w:ay,=
java代码: Tr?p/9.m
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/** ?^~ZsOd8B
* Created on 2005-7-12 Pl B3"{}0Q
*/ .s<0}<Aq>
package com.javaeye.common.business; A"7YkOfwH
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import java.io.Serializable; D|5mNX%e
import java.util.List; A$wC!P|;
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import org.hibernate.Criteria; 7]rIq\bM
import org.hibernate.HibernateException; nFlN{_/
import org.hibernate.Session; fK7
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import org.hibernate.criterion.DetachedCriteria; xo@1((|z
import org.hibernate.criterion.Projections; hF-QbO
import KiXfR\S~C
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org.springframework.orm.hibernate3.HibernateCallback; eX"%b(;s
import "_UnN}Uk
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org.springframework.orm.hibernate3.support.HibernateDaoS 51ViJdZ
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upport; [k
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import com.javaeye.common.util.PaginationSupport; t`6]eRR
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public abstract class AbstractManager extends gOg7:VPG
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HibernateDaoSupport { CG%bZco((
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privateboolean cacheQueries = false; GSRf/::I}4
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privateString queryCacheRegion; 5 SQ!^1R 9
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publicvoid setCacheQueries(boolean sO) H#G
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cacheQueries){ B*G]Dr)e
this.cacheQueries = cacheQueries; cWQJ9.:7
} @|(cr: (=H
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