Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 >jI.$%L$
TDH^x1P
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 dVbFMQ&
36=aahXd\
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 (GC]=
ok\-IU?
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 ?9~^QRLT
pkn^K+<n,
。 &D<R;>iI
i\sBey ND"
分页支持类: P6v ANL-B
oqJYbim
java代码: 5NhFjPETr
uVEJV |^/
Jy(G
A
package com.javaeye.common.util; ;C@mT;hR
<X)\P}"L4
import java.util.List; ]X6<yzu&+l
i7#4&r
publicclass PaginationSupport { ~IhM(Q*mO!
_*o<<C\E
publicfinalstaticint PAGESIZE = 30; yT7$6x
JN
wI{
privateint pageSize = PAGESIZE; Lwl1ta-
t%}<S~"
privateList items; H,(vTthd
P(shbi@
privateint totalCount; "9caoPI0~
ZO<,V
privateint[] indexes = newint[0]; O*~,L6# }
U`(=iyWP=
privateint startIndex = 0; qX@e+&4P0
91]|4k93
public PaginationSupport(List items, int +9Tc.3vQ
a3yNd
totalCount){ -.h)CM@L
setPageSize(PAGESIZE); 5Y *4a%"
setTotalCount(totalCount); KL_/f
setItems(items); A)U"F&tvm
setStartIndex(0); Rt#QW*h\|i
} GB$`b'x@S
8B GZ
public PaginationSupport(List items, int >?@5>wF
y RxrfAdS
totalCount, int startIndex){ DsMo_m/"1
setPageSize(PAGESIZE); M{jXo%C
setTotalCount(totalCount); H^-Y]{7
setItems(items); D>5)',D8xi
setStartIndex(startIndex); H\>{<`sD;f
} :Qge1/
"L~Oj&AN[
public PaginationSupport(List items, int >kQp@r\nQ
hL3up] pZ
totalCount, int pageSize, int startIndex){ 9Vt
^q%DC
setPageSize(pageSize); )-4c@
setTotalCount(totalCount); Jinh#iar
setItems(items); )J 'F]s
setStartIndex(startIndex); m \)B=H!bz
} bL7Gkbs&|
a}@b2Wc*
publicList getItems(){ SMZ*30i
return items; 5sJ>+Rg
} |Y!^E %*
J@-'IJ
publicvoid setItems(List items){ -PPwX~;!
this.items = items; A;d@NOI#,K
} x:)H Ii q/
L/u|90)L
publicint getPageSize(){ LLgw1 @-D
return pageSize; S>dHBR#AD
} @}q, ';H7
gkmof^
publicvoid setPageSize(int pageSize){ QP'sS*saJ
this.pageSize = pageSize; #mU\8M,
} 7]rIq\bM
F${sEtH
publicint getTotalCount(){ .!4'Y}
return totalCount; r-T1^u
} u{4P)DIQ
yP]>eLTSd
publicvoid setTotalCount(int totalCount){ ]|3hK/
if(totalCount > 0){ iM8Cw/DS
this.totalCount = totalCount; uf?;;wg
int count = totalCount / YW7w>}aW
9Z-2MF
pageSize; {gzQ/|}#z-
if(totalCount % pageSize > 0) C
O6}D
count++; 9Buss+K?/h
indexes = newint[count]; XgxO:"B
for(int i = 0; i < count; i++){ jga;q
indexes = pageSize * ,It0brF
b,Eq-Z;
i; QP(d77n
} q&:7R
.Ci
}else{ N-l`U(Z~P
this.totalCount = 0; xtGit}
} P 'h39XoZ
} %sc w]oF
]n4PM=hz
publicint[] getIndexes(){ /cClV"S*G
return indexes; ">7xSWR*4
} p{oz}}
-|'@:cIZ
publicvoid setIndexes(int[] indexes){ fmYx
this.indexes = indexes; PZ/tkw
} FqJd
l8E))oz1T
publicint getStartIndex(){ \:h7,[e
return startIndex; 2+u+9 rW
} t!wbT79/
G>pedE\
publicvoid setStartIndex(int startIndex){ Vw;iE=L
if(totalCount <= 0) [DpOI
this.startIndex = 0; :[l}Bb,
elseif(startIndex >= totalCount) #TUm&2 +V
this.startIndex = indexes w5q6c%VZ
Yjo$vQi
[indexes.length - 1]; y:\<FLR}j
elseif(startIndex < 0) mqeW,89
this.startIndex = 0; )*%uG{h
else{ Rm3W&hQ
this.startIndex = indexes \ MuKS4
]pNM~,
[startIndex / pageSize]; ],AtR1k
} Z3o HOy
} +Q"s!\5
oG22;
publicint getNextIndex(){ 4grV2xtX
int nextIndex = getStartIndex() + /E/6(c
(M;d*gNr
pageSize; @<P;F
if(nextIndex >= totalCount) {B=64,D^7R
return getStartIndex(); ,6y.wNb :F
else tM@%EO
return nextIndex; Y".?j5f?
} FM3.z)>
4Tuh]5
publicint getPreviousIndex(){ *#p}FB2H#
int previousIndex = getStartIndex() - 7.{+8#~nV
J%Y-3{TQK
pageSize; %eF=;q
if(previousIndex < 0) 0dx%b677d
return0; 6I~M8Lo;
else R(>
oyxA[F
return previousIndex; 0(5qVJ12
} 1OY
5tq
4EeVO5
} 5:+x7Ed
<_8eOL<X
Gf7r!Ur;g
Y}}1]}VIK
抽象业务类 >]Mhkf/=)
java代码:
B*`[8kb,
aEUEy:.
<YG 42,N
/** UM1h[#?&V)
* Created on 2005-7-12 }uD*\.
*/ ^~B#r#
package com.javaeye.common.business; &mJm'Ks
/xg1i1Et
import java.io.Serializable; Zz|et206
import java.util.List; ?S)Pv53>}
EwfL.z
import org.hibernate.Criteria; ckdCd
J
import org.hibernate.HibernateException; [*vR&