Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 VcpN
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 =cKrp'
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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 1 ,e`,
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分页支持类: s3+6Z~g'B
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java代码: Y V#|qb
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package com.javaeye.common.util; NoD\t(@h
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import java.util.List; Zzea
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publicclass PaginationSupport { h6uv7n~4
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publicfinalstaticint PAGESIZE = 30; \L4+Dv<z
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privateint pageSize = PAGESIZE; |\] _u 3
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privateList items; d_w^u|(K
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privateint totalCount; Qu6Q)dZ<
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privateint[] indexes = newint[0]; u8sK~1CPf
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privateint startIndex = 0; :j4i(qcF
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public PaginationSupport(List items, int 01AzM)U3"m
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totalCount){ ptvM>zw'~g
setPageSize(PAGESIZE); Tj_~ BT
setTotalCount(totalCount); VSQxlAGk@
setItems(items); /'WVRa
setStartIndex(0); (14J~MDB
} ]xf|xs
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public PaginationSupport(List items, int BBUXoz
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totalCount, int startIndex){ 2}HS`) /
setPageSize(PAGESIZE); `z]MQdE_w
setTotalCount(totalCount); -Yf pfNt
setItems(items); @o6^"
setStartIndex(startIndex); pGh A
} f[$9k}.
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public PaginationSupport(List items, int FdVWj
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totalCount, int pageSize, int startIndex){ 2 bQC2
setPageSize(pageSize); ~e@pL*s
setTotalCount(totalCount); ~.'NG?
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setItems(items); i][af
setStartIndex(startIndex); n^m6m%J)
} M.QXwIT
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publicList getItems(){ @vcvte
return items; Tl ?]K
} ;q6FdS
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publicvoid setItems(List items){ SOPQg?'n=V
this.items = items; %`Q<_LTU
} V6{P4 1_
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publicint getPageSize(){ ,0=@cJ
return pageSize; m+Bt9|d
} beM}({:`
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publicvoid setPageSize(int pageSize){ U]h5Q.<SG
this.pageSize = pageSize; !ENb \'>J>
} wZV/]jmlEt
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publicint getTotalCount(){ 5I(gP
return totalCount; TXlxnB
} Uhz<B #tj
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publicvoid setTotalCount(int totalCount){ c>*RQ4vE
if(totalCount > 0){ @'yD(ZMAz
this.totalCount = totalCount; Y=#g_(4*
int count = totalCount / 4LBMhLy
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pageSize; X)K3X:~L+
if(totalCount % pageSize > 0) :"aCl~cy9g
count++; YLfZ;W|6u
indexes = newint[count]; f9Hm2wV
for(int i = 0; i < count; i++){ @pKQ}?
indexes = pageSize * 5$|wW}SA
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} ^dzg'6M
}else{ K8l|qe
this.totalCount = 0; U_UX *
} .d;XLS~
} \HzI*|*A
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publicint[] getIndexes(){ n>Rt9
return indexes; x@I(G "
} U&D"fM8
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publicvoid setIndexes(int[] indexes){ }cL9`a9j
this.indexes = indexes; [8VB"{{&
} ~ZSP K;D[
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publicint getStartIndex(){ <E(#;F^y
return startIndex; W:7oGZ>4
} Vc!;O9dP
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publicvoid setStartIndex(int startIndex){ /l,V0+p
if(totalCount <= 0) tBp146`
this.startIndex = 0; 8-?.Q"D7%
elseif(startIndex >= totalCount) 0wLu*K5$4E
this.startIndex = indexes *:q3<\y{
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[indexes.length - 1]; @eRR#S
elseif(startIndex < 0) l!plw,PYC
this.startIndex = 0; &sp7YkaW
else{ P8Bv3
this.startIndex = indexes pr8eRV!x
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[startIndex / pageSize]; Ocq.<#||H
}
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} !79^M
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publicint getNextIndex(){ h7NS9CgO
int nextIndex = getStartIndex() + jB*%nB*x
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pageSize; ?*~W
if(nextIndex >= totalCount) x?:[:Hf
return getStartIndex(); W27EU/+3
else iw\RQ
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return nextIndex; G SXe=?
} ISI\<qx
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publicint getPreviousIndex(){ " r!O9X6
int previousIndex = getStartIndex() - !e?GS"L~
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pageSize; (bxSN@hp2
if(previousIndex < 0) L\Uf+d:&}G
return0; !F*7Mif_E
else O+Fu zCWj
return previousIndex; gRS}Y8
} i2SR.{&
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} hHsCr@i
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抽象业务类 ^[noGjy
java代码: 84UH&
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/** 66*/"dBwm
* Created on 2005-7-12 0b9;vlGq$
*/ PpD ?TAlA
package com.javaeye.common.business; .az+'1
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import java.io.Serializable; 3%Z:B8:<