Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 H:\k}*w
)CyS#j#=
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 r%N)bNk~
tI{_y
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!%CffF2
1nOCQ\$l
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 /Q )\ +
|Ds=)S"
K
。 A(N4N
]{L jRSV
分页支持类: +^<](z
c"xK`%e
java代码: UZ$/Ni
E!AE4B1bd
k+4#!.HX^
package com.javaeye.common.util; Cls%M5MH
07 $o;W@
import java.util.List; xwty<?dRW1
|)G<,FJQE_
publicclass PaginationSupport { Xry47a
)
RFH0
publicfinalstaticint PAGESIZE = 30; {BHO/q3
$mB;K]m
privateint pageSize = PAGESIZE; PxE3K-S)G
Lh<).<S
privateList items; 6 aV_@no.C
hpJ-r
privateint totalCount; 3k?X-|O8AZ
{}x^ri~
privateint[] indexes = newint[0]; ]+$?u&0?w
Mc}^LDX
privateint startIndex = 0; bJ;'`sw1
=I~mKn
public PaginationSupport(List items, int *\q
d
2Hv+W-6v
totalCount){ Tac$LS\Q
setPageSize(PAGESIZE); >"<Wjr8W!$
setTotalCount(totalCount); !g.?
setItems(items); qjc4.,/
setStartIndex(0); RX5dO%
} CWS4lx
cs'{5!i]
public PaginationSupport(List items, int wa3}SB
OUXR
totalCount, int startIndex){ rXU\
setPageSize(PAGESIZE); +t;7tQDVB
setTotalCount(totalCount); j8`BdKg
setItems(items); +2j AC r
setStartIndex(startIndex); BF <ikilR
} {qMIGwu
!?gKqx'T$
public PaginationSupport(List items, int k#rBB
`~`k_7t.
totalCount, int pageSize, int startIndex){ IaXeRq?<
setPageSize(pageSize); fd2T=fz-
setTotalCount(totalCount); O7IJ%_A&
setItems(items); alvrh'51
setStartIndex(startIndex); 6K<K
} Tu 7QCr5*
r>U@3%0&
publicList getItems(){ O8.5}>gDn.
return items; #1G:lhkC
} tNX|U:Y*
>e"#'K0?\
publicvoid setItems(List items){ t<viX's
this.items = items; }Z,x~G
} IB7E}56l
# Vha7
publicint getPageSize(){ I.k
*GW
return pageSize; .VzT:4-<Q"
} 1y4
<A'$%`6m
publicvoid setPageSize(int pageSize){ 0_t`%l=
this.pageSize = pageSize; %|i`kYsy
} ^ovR7+V
Y.r+wc]
publicint getTotalCount(){ `$C
n~dT
return totalCount; 8pgEix/M5o
} 'X2POay1
(*)hD(C5
publicvoid setTotalCount(int totalCount){ ox (%5c)b|
if(totalCount > 0){ d;}nh2*
this.totalCount = totalCount; {jX2}
int count = totalCount / <3hRyG@vB
igR";OQk
pageSize; %- 0t?/>
if(totalCount % pageSize > 0) 2('HvH]k
count++; Hg$lXtn]
indexes = newint[count]; w
G<yBI0
for(int i = 0; i < count; i++){ 46&/gehr
indexes = pageSize * $H>W|9Kg,
~La>?:g <+
i; EJNU761
} fsWTF<Y
}else{ 'CkIz"Wd
this.totalCount = 0; 'y3!fN=h
} Fun^B;GA:
} v OpKNp
7s{GbU\
publicint[] getIndexes(){ <<R*2b
return indexes; kq,ucU%>p
} e&aWq@D
r?
E)obE
publicvoid setIndexes(int[] indexes){ Da&]y
this.indexes = indexes; fDU!~/#
} exUu7&*:
xjj6WED
publicint getStartIndex(){ ?oHpFlj
return startIndex; eM?I$eP TN
} <3C*Z"aQ>|
^qD$z=z-
publicvoid setStartIndex(int startIndex){ cq/$N
if(totalCount <= 0) 'u |c
this.startIndex = 0; tHwMX1 IG
elseif(startIndex >= totalCount) wov\kV
this.startIndex = indexes ByNn
9e,0\J
[indexes.length - 1]; JB[~;nLlC
elseif(startIndex < 0) )C]gld;8
this.startIndex = 0; W+ko q*P
else{ Y^EcQzLw
this.startIndex = indexes i5Yb`Z[Y
>_"an~Ss
[startIndex / pageSize]; |Uh
} "]b<uV
} D!-g&HBTC
FZslv"F
publicint getNextIndex(){ <s<n
int nextIndex = getStartIndex() + S2GxV/E
x Bi' X
pageSize; .MoU1n{Yc
if(nextIndex >= totalCount) ")XHak.JX
return getStartIndex(); ~;{;,8!)
else 54R#W:t
return nextIndex; .Od!0(0
} 65$+{s
*VhL\IjN]
publicint getPreviousIndex(){ MJ
[m
int previousIndex = getStartIndex() - LR.<&m%~.
41?HY{&2
pageSize; /zVOK4BqN+
if(previousIndex < 0) B; h"lv
return0; *@=/qkaJaI
else ~^fZx5
return previousIndex; XXcl{1Kp!@
} Jgd'1'FOs
e_ANUll1
} P'[3Fqe
EC!02S
Mc_YPR:C
.Una+Z
抽象业务类 3E $f)
java代码: Q%tXQP .r
W^LY'ypT
,,Q O^j]4~
/** 3/e.38m|
* Created on 2005-7-12 $OkBg0
*/ 9oR@UW1
package com.javaeye.common.business; F {4bo$~>
PB`Y
g
import java.io.Serializable; xvl#w
import java.util.List; x'>9d
4`]^@"{
import org.hibernate.Criteria; ]i ,{
import org.hibernate.HibernateException; D_^
nI:
import org.hibernate.Session; KD7dye
import org.hibernate.criterion.DetachedCriteria; Tg)|or/%
import org.hibernate.criterion.Projections; {|_M
#w~&
import
zC@o
Yz"#^j}Kg
org.springframework.orm.hibernate3.HibernateCallback; <~'"<HwtK
import Wk4s reB
a PfO$b:
org.springframework.orm.hibernate3.support.HibernateDaoS suiS&$-E
/dQl)tL
upport; sF?TmBQ*
# 0Q]dO
import com.javaeye.common.util.PaginationSupport; hl (hJfp
1&evG-#<:
public abstract class AbstractManager extends sRL`dEl4l
>xYpNtEs
HibernateDaoSupport { m6&~HfwN
2E/"hQw
privateboolean cacheQueries = false; l2rd9-T
J0\Fhe0'
privateString queryCacheRegion; lN?qp'%H`
lC("y'
::
publicvoid setCacheQueries(boolean Yi+wC}
`nv~NLkl
cacheQueries){ OXSmt
DvJ
this.cacheQueries = cacheQueries; 1;r|g)VM
} [-k
x_6[P2"PP
publicvoid setQueryCacheRegion(String ?o4C;
FR4QUk
queryCacheRegion){ pW@Pt 3u
this.queryCacheRegion = wb5baY9
`maKN \;
queryCacheRegion; ,+vy,<e&
} R_ ,U Mt
Ug t.&IA
publicvoid save(finalObject entity){ K'Tm_"[u
getHibernateTemplate().save(entity); kmsb hYM)
} I{9QeRI
&5spTMw8
publicvoid persist(finalObject entity){ O-~7b(Z
getHibernateTemplate().save(entity); AJ?r,!)
} wh\}d4gN
)72+\C[*~r
publicvoid update(finalObject entity){ YY((V@|K
getHibernateTemplate().update(entity); nE&