Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 9qyA{
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 fq*.4s
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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 E]G#"EV!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 k-5Enbkr
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分页支持类: QcZ*dI7]:
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java代码: #"tHT<8 u
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package com.javaeye.common.util; K$>C*?R
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import java.util.List; C>%2'S^.b
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publicclass PaginationSupport { kpc3l[.A
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publicfinalstaticint PAGESIZE = 30; Vc}#Ok
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privateint pageSize = PAGESIZE; S*3N6*-l"
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privateList items; ~G0\57;h
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privateint totalCount; +T}:GBwD7
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privateint[] indexes = newint[0]; @^g/`{j>J
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privateint startIndex = 0; |7@[+
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public PaginationSupport(List items, int ]{->/.oB
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totalCount){ ;6o p|O
setPageSize(PAGESIZE); 7^Y "K
setTotalCount(totalCount); W/*2I3a
setItems(items); ,TrrqCw>
setStartIndex(0); dP8b\H
} weMC9T)B
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public PaginationSupport(List items, int c^^[~YWj
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totalCount, int startIndex){ J23Tst#s
setPageSize(PAGESIZE); X+l&MD
setTotalCount(totalCount); sGx"ja+
setItems(items); xyGk\= S
setStartIndex(startIndex); rLMjN#`^
} <DG=qP6O
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public PaginationSupport(List items, int CA2 ,
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totalCount, int pageSize, int startIndex){ *ea%KE":
setPageSize(pageSize); #R_IF&7
setTotalCount(totalCount); <5qXC.{Cyp
setItems(items); 0@w8,x
setStartIndex(startIndex); CXqU<a&
} )6?(K"T
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publicList getItems(){ ImJ2tz6
return items; P,xI3U<
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} T7f>u}T
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publicvoid setItems(List items){ e1'<;;; L
this.items = items; nS xFz!
} l7G&[\~
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publicint getPageSize(){ i7h!,vaK
return pageSize; 6FMW}*6<
} x!CCSM;q
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publicvoid setPageSize(int pageSize){ ?)=A[
this.pageSize = pageSize; g~FA:R
} N?`-$C ]
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publicint getTotalCount(){ r+8%oWj
return totalCount; ]Bo !v*12
} wOH$S=Ba5,
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publicvoid setTotalCount(int totalCount){ Xy{\>}i]N
if(totalCount > 0){ ><odBM-
this.totalCount = totalCount; j6wdqa9!~
int count = totalCount / 5&5
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pageSize; eNN)2-96
if(totalCount % pageSize > 0) s;-(dQ{O
count++; `TNWLD@Z
indexes = newint[count]; Y{P0?`
for(int i = 0; i < count; i++){ 8=;'kEU
indexes = pageSize * %{$iN|%J%$
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} ha6jbni
}else{ H f}->
this.totalCount = 0; DyiyH%SSD
} CR$\$-
} 1#H=<iJ
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publicint[] getIndexes(){ cPcp@Dp
return indexes; #Z8=z*4
} 3D3/\E#'o
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publicvoid setIndexes(int[] indexes){ -3
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this.indexes = indexes; -e H5s3:A
} \W5fcxf
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publicint getStartIndex(){ n_[;2XQQ
return startIndex; d+ P<nI/|
} s)HLFdis@
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publicvoid setStartIndex(int startIndex){ -LAYj:4
if(totalCount <= 0) W0GDn
this.startIndex = 0; z:B4
elseif(startIndex >= totalCount) VfS&V*un
this.startIndex = indexes if6/ +7
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[indexes.length - 1]; =aM(r6 C
elseif(startIndex < 0) ~>:uMXyV2t
this.startIndex = 0; QKW;r
else{ \{W}
this.startIndex = indexes \A@Mlpe&t
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[startIndex / pageSize]; w'NL\>
} Opc, {,z6
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publicint getNextIndex(){ 4+fWIY1
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int nextIndex = getStartIndex() + nH*JR
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pageSize; #*QnO\.
if(nextIndex >= totalCount) rPf<8oH
return getStartIndex(); 9ohaU
else ZzZy2.7
return nextIndex; yu ~Rk
} N?]HWP^pg
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publicint getPreviousIndex(){ >OP[qj
int previousIndex = getStartIndex() - 0[(TrIpXl
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pageSize; "uR,WY
if(previousIndex < 0) EqW/Wxv7b
return0; &z!yY^g
else .EJo9s'
return previousIndex; Jw;Tq"&
} WCc7 MK
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} wxy.&a]
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抽象业务类 0q6$KP}q
java代码: a o"\L0;{
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/** m0*bz5
* Created on 2005-7-12 wjLtLtK?
*/ 1ztL._Td
package com.javaeye.common.business; ?];?3X~|
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import java.io.Serializable; /l o;:)AiP
import java.util.List; ?)x"+[2
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import org.hibernate.Criteria; >NL4&MV:
import org.hibernate.HibernateException; b#ih=qE
import org.hibernate.Session; $\:;N]Cs~0
import org.hibernate.criterion.DetachedCriteria; tGq0f"}'J
import org.hibernate.criterion.Projections; W!@*3U]2R
import 3zdm-5R.b
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org.springframework.orm.hibernate3.HibernateCallback; }@R*U0*E
import l_ Eeus
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org.springframework.orm.hibernate3.support.HibernateDaoS Qq,w6ekr
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