Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 dGU8+)2cn
_!%M%
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 (U _wp's
qv$!\ T
据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 H }B2A"
SYeE) mI
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 `2,a(Sk#
M}u1qXa
。 oE6|Zw
Fav^^vf*1
分页支持类: -w\M-wc/$
ljuNs@q
java代码: 5tMh/]IeS
$HxS:3D%D
b9DR%hO:
package com.javaeye.common.util; GY9y9HNZ
o(zTNk5d
import java.util.List; =!<^^6LZ
.$P|^Zx,
publicclass PaginationSupport { b[yE~EQxr
N2[jO+6
publicfinalstaticint PAGESIZE = 30; *Wso3 6an
p&\K9hfi
privateint pageSize = PAGESIZE; dHq#
McP~}"!^
privateList items; :PUK6,"5]O
>(OYK}ZN
privateint totalCount; HS7_MGU
^&-a/'D$,
privateint[] indexes = newint[0]; (_U^
dqxd3,Z
privateint startIndex = 0; [g`, AmR\!
%<AS?Ry
public PaginationSupport(List items, int _[F@1NJ
O)1E$#~
totalCount){ S+iP^*L,c
setPageSize(PAGESIZE); Xo8DEr
setTotalCount(totalCount); <}]{~y
setItems(items); C38%H
setStartIndex(0); iE=P'"I
} ewym1}o
|by@ :@*y
public PaginationSupport(List items, int 06jMj26!
GQ[pG{_+
totalCount, int startIndex){ ikIzhUWE
setPageSize(PAGESIZE); |(RZ/d<X\a
setTotalCount(totalCount); FQ!Oxlq,Q
setItems(items); c|Y!c!9F
setStartIndex(startIndex); R^6Zafp
} Mi?}S6bp
fnWsm4
public PaginationSupport(List items, int S/fW/W*/}
CL1
oAk
totalCount, int pageSize, int startIndex){ MJ\r 4n
setPageSize(pageSize); +sRP<as
setTotalCount(totalCount); `s%QeAde
setItems(items); .it2NS
setStartIndex(startIndex); 'in@9XO
} kW+G1|
;_N"Fdl
publicList getItems(){ :3 y_mf>
return items; ?@DNsVwb
} nj
oq. r\r
publicvoid setItems(List items){ ??(Kwtx{
this.items = items; qv uxhz F
} '?8Tx&}U8
# 66e@
publicint getPageSize(){ 2( _=SfQ
return pageSize; -njQc:4W,-
} YZ**;"<G
u7#z^r
publicvoid setPageSize(int pageSize){ 3~<}bee5|q
this.pageSize = pageSize; N Bz%(?\
} GI_DhU]~)
Pin/qp&Fa8
publicint getTotalCount(){ "{ FoA3g|
return totalCount; yd*3)6=
} cgN>3cE
auL^%M|$R
publicvoid setTotalCount(int totalCount){ aq kix"J
if(totalCount > 0){ K:_($X]
this.totalCount = totalCount; 0+j}};
int count = totalCount / [e1L{ _*l
*KJ7nRKx(w
pageSize; vI|As+`$d
if(totalCount % pageSize > 0) ESv:1o`?n
count++; L/fRF"V
indexes = newint[count]; /AR]dcL@76
for(int i = 0; i < count; i++){ D%gGRA
indexes = pageSize * az2Xch]
KuXkI;63J>
i; H`el#tt_
} KoF
iQ?
}else{ vYdlSe=6G
this.totalCount = 0; L
{qJ-ln:
} ?ZX!7^7
} Up|f=@=
DEtf(lW_
publicint[] getIndexes(){ {cR3.%wX
return indexes; B6%&gXr\
} l;0y-m1
_Ex|f5+
publicvoid setIndexes(int[] indexes){ $:;%bjSI
this.indexes = indexes; l[*sHi
} F.
T@)7
'Sa!5h
publicint getStartIndex(){ 1.0J2nZpt
return startIndex; {i;6vRr
} Vhph`[dC{
aS/`A
publicvoid setStartIndex(int startIndex){ D:m#d.m
if(totalCount <= 0) +*.1}r&
this.startIndex = 0; 0Cq!\nzz
elseif(startIndex >= totalCount) d1bhJK
this.startIndex = indexes w+=Q6]FxJ
mf2Mx=oy
[indexes.length - 1]; p:tN642
elseif(startIndex < 0) km4g}~N</
this.startIndex = 0; 9I kUZW
else{ jCQho-1QN
this.startIndex = indexes K(3&27sGN
P^zy; Qs7
[startIndex / pageSize]; A{(T'/~"
} On%,l
} )E-E0Hl>7
YxyG\J\|,
publicint getNextIndex(){ ANb"oX c
int nextIndex = getStartIndex() + N9`97;.X
Q;20T
pageSize; +'%\Pr(
if(nextIndex >= totalCount) afUTAP@
return getStartIndex(); (Fqa][0
else @ef$b?wg
return nextIndex; 5Eal1Qu
} }p*?1N
<4f,G]UH_
publicint getPreviousIndex(){ h.^o)T
int previousIndex = getStartIndex() - uP6-cs
TPK@*9rI
pageSize; SUu >6'LN
if(previousIndex < 0) >a@>N
return0; +?V0:Kz]
else [+gzdLad
return previousIndex; l&|)O6N
} &k+*3.X
ev"M;"y
} JY@X2'>v/
g@u;Y5
O<`,,^4w/
-l JYr/MSL
抽象业务类 xFwXW)
java代码: 27iy4(4
_+n;A46
w[sR7T9*
/** [Xh\mDU.
* Created on 2005-7-12 pYh!]0n
*/ $T/#1w P
package com.javaeye.common.business; \u8,!) 4i
[-58Ezyr
import java.io.Serializable; $?$9y^\
import java.util.List; pL)xqKj
@H+~2;B,
import org.hibernate.Criteria; 9[sG1eP!
import org.hibernate.HibernateException; 5p
)IV>G
import org.hibernate.Session; +V1}@6k
:
import org.hibernate.criterion.DetachedCriteria; 9GPb$gtx
import org.hibernate.criterion.Projections; j{"[Ec
import "Z~`e]>
Pw
xIz
org.springframework.orm.hibernate3.HibernateCallback; o&,Y<$!:VH
import R9vY:oN%
^6qjSfFW}
org.springframework.orm.hibernate3.support.HibernateDaoS 0I^Eo|
cAibB&`~
upport; ^jOCenE3
G4m4k
import com.javaeye.common.util.PaginationSupport; ns26$bU
gQR1$n0
public abstract class AbstractManager extends 9FNwpL'C
@>:i-5
HibernateDaoSupport { df
?eL2v
OHhs y|W
privateboolean cacheQueries = false; I+~bCcgPi
9`INC~h
privateString queryCacheRegion; NQR^%<hU
~<eVl
l=
publicvoid setCacheQueries(boolean oAnigu;
K7Gm-=%
cacheQueries){ `Hd9\;NJ
this.cacheQueries = cacheQueries; F"=Hp4-C
} Yw[{beo
HL8(lPgS
publicvoid setQueryCacheRegion(String 5 H *>
h~fWE
queryCacheRegion){ r w\D>}\
this.queryCacheRegion = {U6"]f%
[ro t
queryCacheRegion; xx0k$Dqt2I
} |!xpYT:
KGQC't
publicvoid save(finalObject entity){ Rn;VP:H M
getHibernateTemplate().save(entity); ]?#
#))RUS
} gDv$DB8-
- `4Ty*K
publicvoid persist(finalObject entity){ ENyAF%6
getHibernateTemplate().save(entity); 8 ?" Ze(
} _k|g@"
&SrGh$:X
publicvoid update(finalObject entity){ UM`nq;>
getHibernateTemplate().update(entity); GmAj<