Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 J)*y1
.sCo,
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 B~z&
"`
n`CmbM@@
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 5Pn$@3
t@b';Cuv
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 d!,V"*S
)5bhyzSZI
。 ([s2F%S`@
?"J5~_U.
分页支持类: +i{&"o4}
O(CUwk
java代码: V[CS{Hy'
{DAwkJvb]
7
pp[kv;!G
package com.javaeye.common.util; d[jxU/.p;
@eR>?.:&
import java.util.List; XYf;72*
DOf[? vbu
publicclass PaginationSupport { vfmKY iLp
PJO +@+"{@
publicfinalstaticint PAGESIZE = 30; 2#ypM 9
t hTY('m
privateint pageSize = PAGESIZE; y1FS?hSD0
qJUu9[3'm
privateList items; b1E>LrL
^\J/l\n
privateint totalCount; @>&UoH}2
s:,BcVLx^
privateint[] indexes = newint[0]; /zM
*b~$|H-\
privateint startIndex = 0; bv-s}UP0
,"5Fw4G6*
public PaginationSupport(List items, int `TBau:E lI
Dtt[a
totalCount){ Cz8=G;\
setPageSize(PAGESIZE); L-",.U*;
setTotalCount(totalCount); nu|;(ly
setItems(items); @'jC>BS8`
setStartIndex(0); c2-NXSjsW
} |?i-y3N
WR%x4\,d#
public PaginationSupport(List items, int `gSqwN<x%
7J.alV4`/
totalCount, int startIndex){ ku&IVr%
setPageSize(PAGESIZE); gfR B
setTotalCount(totalCount); IEmtt^C
setItems(items); rs`H':a/
setStartIndex(startIndex); XN'x`%!*3#
} P0Z1cN}
o!dTB,Molr
public PaginationSupport(List items, int E0o=
"at*G>+
totalCount, int pageSize, int startIndex){ ag+$qU
setPageSize(pageSize); +W
x/zo
setTotalCount(totalCount); !:'%'@uc
setItems(items); \,+act"v
setStartIndex(startIndex); g/'CX}g`
} p;,Cvw{.;%
4en[!*
publicList getItems(){ Z^zUb
return items; i?.MD+f8
} ep>*]'
*VmJydd
publicvoid setItems(List items){ TyI"fP
this.items = items; pdUrVmW "'
} *F42GiBZR
2^'|[*$k1@
publicint getPageSize(){ D~P I_*h.
return pageSize; B{hP#bYK
} 5|. _K(M
S:"R/EE(
publicvoid setPageSize(int pageSize){ ~G+o;N,V
this.pageSize = pageSize; :OT~xU==H
} Yw&{.<sL
|j3mI\ANF
publicint getTotalCount(){ z%Pbs[*C
return totalCount; |1iCt1~U
} )u ) ]#z
!$ItBn/_
publicvoid setTotalCount(int totalCount){ !#wd~: H
if(totalCount > 0){ E2+x?Sc+
this.totalCount = totalCount; 2Z!%Q}Do
int count = totalCount / 8VxjC1v+
MBXja#(k
pageSize; c((^l&
if(totalCount % pageSize > 0) nK=-SQ
count++; + o^b ,!
indexes = newint[count]; HIM>%
for(int i = 0; i < count; i++){ XaOq &7
indexes = pageSize * gBBS}HF
!#s1'x{o
i; R-CFF
} 5:ca6H
}else{ MDI[TNYG
this.totalCount = 0; ;[9WB<t
} o0t/
} z'FD{xdf
0].*eM
publicint[] getIndexes(){ OJ0Dw*K<
return indexes; }$E cNm$%
} H=Sy.
N&ZIsaK,j
publicvoid setIndexes(int[] indexes){ jF4h/((|EU
this.indexes = indexes; 29#&q`J
} Byq4PX%B
svki=GD_(.
publicint getStartIndex(){
ETQ.A< v
return startIndex; O
:P%gz4
} d9@!se9&Z
(KQAKEhD!
publicvoid setStartIndex(int startIndex){ u`GzYG-L
if(totalCount <= 0) ;-Bi~XD
this.startIndex = 0; KUH&_yCRB
elseif(startIndex >= totalCount) h.'h L
this.startIndex = indexes n2,b~S\e
f{ S)wE>;
[indexes.length - 1]; !9iVe7V
elseif(startIndex < 0) %XG X(
this.startIndex = 0; vR1%&(f{
else{ @u6#Tvxy[
this.startIndex = indexes /q='~t
R52q6y:<x
[startIndex / pageSize]; cx_"{`+e
} !;CY
@=
} Vzbl*Zmx
N.eSf
publicint getNextIndex(){ +<
BAJWU
int nextIndex = getStartIndex() + w #(XiH*
o}WbW }&
pageSize; f.+e
if(nextIndex >= totalCount) nk-6W4
return getStartIndex(); ]iLfe&f
else _rjCwo\
return nextIndex; -]'Sy$,A
} (2qo9j"j/Y
VdK-2O(.-
publicint getPreviousIndex(){ e1&c_"TOih
int previousIndex = getStartIndex() - )J#@L*
?Cu#(
pageSize; \UB<'~z6!
if(previousIndex < 0) fngZ0k!
return0; 6dq U4
else G2L7_?/m
return previousIndex; ^Gs!" Y
} 3v0)oK
E?08=$^5%
} ;y k@`<
&