Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Xvu)
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 R] Disljq
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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 G&@-R{i
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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 ]CIQq1iY
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分页支持类: Q)G!Y
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java代码: *f `s%&Y]s
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package com.javaeye.common.util; MOP]\ypn
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import java.util.List; }O.LPQ0
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publicclass PaginationSupport { dv^e9b|
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publicfinalstaticint PAGESIZE = 30; v~V;+S=gz
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privateint pageSize = PAGESIZE; QJ a4R
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privateList items; dd\bI_
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privateint totalCount; 8Wdkztp/S
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privateint[] indexes = newint[0]; n5bXQ
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privateint startIndex = 0; F2bm+0vOJ
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public PaginationSupport(List items, int 'bB>$E
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totalCount){ J 16=!q()
setPageSize(PAGESIZE); /&D'V_Q`*
setTotalCount(totalCount); v#<\:|XAg
setItems(items); 2q"_^deI5*
setStartIndex(0); =MTj4VXh"
} uX[O,l^}
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public PaginationSupport(List items, int g|ql 5jW
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totalCount, int startIndex){ YO@hE>
setPageSize(PAGESIZE); 7o;x (9
setTotalCount(totalCount); >"cr-LB
setItems(items); ljup#:n
setStartIndex(startIndex); nU}~I)@V
} CV!;oB&
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public PaginationSupport(List items, int qs!>tw
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totalCount, int pageSize, int startIndex){ EkRdpiLB
setPageSize(pageSize); Q&u>7_, Du
setTotalCount(totalCount); Az
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setItems(items); '"`
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setStartIndex(startIndex); 968Ac}OA
} 4)c+t"h
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publicList getItems(){ T@(6hEmP,
return items; PSW#^o
} R'G'&H{N
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publicvoid setItems(List items){ + jp|Y?6Z
this.items = items; gWFL
} UskZ%J
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publicint getPageSize(){ UG6M9
return pageSize; .=Pm>o/,
} /"(b.&
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publicvoid setPageSize(int pageSize){ ;US83%*
this.pageSize = pageSize; dKU5;
} cICHRp&&
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publicint getTotalCount(){ +``>,O6
return totalCount; d2ohW|
} :tKbz
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publicvoid setTotalCount(int totalCount){ LPq2+:JpS
if(totalCount > 0){ f4R1$(<
this.totalCount = totalCount; /ca(a\@R
int count = totalCount / 6/|U
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pageSize; rW[SU:
if(totalCount % pageSize > 0) ?#4+r_dP
count++; bKYY{V55
indexes = newint[count]; ~Y% :
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for(int i = 0; i < count; i++){ ,MRvuw0P
indexes = pageSize * * !X4P
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}else{ b 1cd&e
this.totalCount = 0; yP
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} b<\$d4Qy
} Dft4isyt^
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publicint[] getIndexes(){ o5>/}wIf
return indexes; /n(9&'H<
} -=}b;Kf-
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publicvoid setIndexes(int[] indexes){ \kxh#{$z?
this.indexes = indexes; TNx _Rc}
} \F[n`C"Is
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publicint getStartIndex(){ T\jAk+$Jo
return startIndex; mIRAS"Q!m
} C}9Kx }q
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publicvoid setStartIndex(int startIndex){ C]/&vh7ta
if(totalCount <= 0) FK6K6wU52m
this.startIndex = 0; O"qR }W
elseif(startIndex >= totalCount) )R~a;?T_c0
this.startIndex = indexes =m~ruZ/
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[indexes.length - 1]; bCzdszvg3
elseif(startIndex < 0) L/)B}8m\
this.startIndex = 0; *y{+W
else{ goB;EWz
this.startIndex = indexes gd
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[startIndex / pageSize]; p(.N(c
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} U3/8A:$y
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publicint getNextIndex(){ # J]~
int nextIndex = getStartIndex() + ;t|,nz4kJ
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pageSize; zLL)VFCJW
if(nextIndex >= totalCount) b) Ux3PB
return getStartIndex(); ~ibF M5m
else e^=NL>V6p
return nextIndex; g*F~8+]Y
} Y!M~#oqio
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publicint getPreviousIndex(){ 5E`JD
int previousIndex = getStartIndex() - ZEqE$:
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pageSize; V;k#})_-
if(previousIndex < 0) o ~;M"
return0; 3 tF:
else lr0M<5d=p
return previousIndex; zXjwnep
} '=p?
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} -n-Z/5~ X
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抽象业务类 JDKLKHOMZ
java代码: Ts#pUoE~+H
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/** Tv1]v.
* Created on 2005-7-12 BtzYA"
*/ F*,5\s<
package com.javaeye.common.business; jccOsG9;_
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import java.io.Serializable; :WO{x g
import java.util.List; W/=7jM
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import org.hibernate.Criteria; jI A#!4
import org.hibernate.HibernateException; !UVk9
import org.hibernate.Session; \OT6L'l],
import org.hibernate.criterion.DetachedCriteria; ]q&tQJ/Fa
import org.hibernate.criterion.Projections; G%$}WA]|
import Td&