Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 K0EY<Ltq
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 54q4CagFq
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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 V=j-Um;
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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 K3vseor
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分页支持类: ]{f^;y8
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java代码: N$\ bg|v
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package com.javaeye.common.util; 7d&DrI@~
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import java.util.List; w)+wj[6
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publicclass PaginationSupport { ?PBa'g
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publicfinalstaticint PAGESIZE = 30; T>}0) s
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privateint pageSize = PAGESIZE; T
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privateList items; /@ y;iJk;
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privateint totalCount; 21r==
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privateint[] indexes = newint[0]; 2O
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privateint startIndex = 0; 8zhBA9Y#~
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public PaginationSupport(List items, int rRB~=J"
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totalCount){ 95=gY
setPageSize(PAGESIZE); kOw=c Gt
setTotalCount(totalCount); J,f/fPaf7
setItems(items); z{ptm7
setStartIndex(0); t)YUPDQ@J
} <fN;
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public PaginationSupport(List items, int "\e:h|
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totalCount, int startIndex){ Pm4e8b
setPageSize(PAGESIZE); 3sH\1)Zz
setTotalCount(totalCount); 1N8;)HLIBJ
setItems(items); 'It?wB W
setStartIndex(startIndex); )2xE z
} {fZb@7?GF
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public PaginationSupport(List items, int '"y}#h__T
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totalCount, int pageSize, int startIndex){ R (G2qi
setPageSize(pageSize); +a%xyD:.?
setTotalCount(totalCount); 3gAR4
setItems(items); 5iVQc -m&
setStartIndex(startIndex); $9K(F~/
} pz{'1\_+9
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publicList getItems(){ i3#'*7f%j
return items; 8".2)W4*
} LheFQ A
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publicvoid setItems(List items){ ?WQNIX4
this.items = items; $B\ H
} 1BJ<m5/1%
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publicint getPageSize(){ Ga v"C{G
return pageSize; H$!+A
} nZfs=@w:y
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publicvoid setPageSize(int pageSize){ yGxv?%%2
this.pageSize = pageSize; (&jW}1D
} yub{8 f;v
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publicint getTotalCount(){ 69-:]7.g
return totalCount; #)o7"PW:
} CK0l9#g
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publicvoid setTotalCount(int totalCount){ Zb(E:~h\
if(totalCount > 0){ AEY$@!8
this.totalCount = totalCount; \q "N/$5{f
int count = totalCount / ef=K_,
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pageSize; %Tv^GP{}
if(totalCount % pageSize > 0) gY(1,+0-
count++; fiVHRSX60
indexes = newint[count]; jfD1
for(int i = 0; i < count; i++){ WK0C
indexes = pageSize * 4*TmlY
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} WF2NG;f=
}else{ rAb&I"\ZY
this.totalCount = 0; >O#grDXb
} Ha%F"V*
} 2?W7I/F
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publicint[] getIndexes(){ ZtK\HDdp
return indexes; Gh}yb-$N`&
} 1svi8wh
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publicvoid setIndexes(int[] indexes){ \=;uu_v$
this.indexes = indexes; Ye5jB2Z
} wG1l+^p
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publicint getStartIndex(){ WkP
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return startIndex; DIaYo4
} \}5p0.=
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publicvoid setStartIndex(int startIndex){ PE"v*9k
if(totalCount <= 0) H6K`\8/SeN
this.startIndex = 0; )}MHx`KT2
elseif(startIndex >= totalCount) WA6!+Gy
this.startIndex = indexes ?<U{{C
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[indexes.length - 1]; kkS~4?-*
elseif(startIndex < 0) v.=/Y(J
this.startIndex = 0; h1[WhBL-O
else{ QJn`WSw$_-
this.startIndex = indexes DWU`\9xA*
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[startIndex / pageSize]; j}:~5 |.
} :K':P5i
} =8Ehrlq
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publicint getNextIndex(){
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int nextIndex = getStartIndex() + kL>d"w
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pageSize; x;LzG t:w
if(nextIndex >= totalCount) ?+0GfIV
return getStartIndex(); At6qtoPRA
else >?lOE
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return nextIndex; qQ0C ?
} C[uOReo
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publicint getPreviousIndex(){ w%y\dIeI'
int previousIndex = getStartIndex() - 8X$LC
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pageSize; MFt*&%,JX
if(previousIndex < 0) VZy4_v=
return0; I.'b'-^
else QA#3bFZt1n
return previousIndex; (=4W-z7
} &fOdlQ?
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} F_;DN:
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抽象业务类 !#2=\LUC
java代码: %JZZ%xc
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/** ~utJB 'gr
* Created on 2005-7-12 ziE*'p
*/ tV;`fV
package com.javaeye.common.business; Y&HK