Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 79{.O`v
]k'#g Z$
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 N+\oFbE
`7QvwXsH]
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 u8-a-k5<
MtpU~c
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 MiSja#"+A
"ib K1}-
。 lL:KaQ 0E
6\,DnO
分页支持类: 6[+\CS7Lt
zB#_:(1qK
java代码: LyuSZa]
iUeV5cB
qs6Nb'JvQR
package com.javaeye.common.util; 935-{h@k
?(5o@Xq
import java.util.List; U6c)"^\
j>$=SMc
publicclass PaginationSupport { pau*kMu^}
vF9*tK'
publicfinalstaticint PAGESIZE = 30; n9]IBIthe
OLk9A
privateint pageSize = PAGESIZE; 3)6+1Yc
tMxsR>sH
privateList items; F5FNhuC
0hrCG3k.91
privateint totalCount; 0V<Aub[${
M|/oFV
privateint[] indexes = newint[0]; Np.no$_
Zg)_cRR
privateint startIndex = 0; )ZT6:)
5z1\#" B[
public PaginationSupport(List items, int ~A8qeaP
D ?Nd; [
totalCount){ 4t&gW
setPageSize(PAGESIZE); >EBZ$ X
setTotalCount(totalCount); 0n4g$JK7
setItems(items); x`]Ofr'
setStartIndex(0); 8O~0RYk
} nGq]$h
B3y?.
public PaginationSupport(List items, int %*$5!;
Wyy^gJl
totalCount, int startIndex){ wVx,JL5Jr
setPageSize(PAGESIZE); NFB*1_m
setTotalCount(totalCount); ;M}itM
setItems(items); b->eg 8|
setStartIndex(startIndex); 1pd 9s8CA
} lemVP'cn
pTcbq
public PaginationSupport(List items, int h7bPAW=(
EfFz7j&X
totalCount, int pageSize, int startIndex){ gO+\O
setPageSize(pageSize); ~c9>Nr9|`
setTotalCount(totalCount); j(0Ilx|7v
setItems(items); v2Dt3$@H6
setStartIndex(startIndex); uzHT.iBn
} ?TIV2m^?
w?kGi>7E
publicList getItems(){ MVeFe\r
return items; F(d:t!
} x|.v{tQa
mfZ)^X
publicvoid setItems(List items){ HwB {8S?sm
this.items = items; 3Bejp+xX
} j3
6,w[Y:
n%F-cw
publicint getPageSize(){ Z+NF(d
return pageSize; #X#8ynt
} T
|37#*c
(jMtN?&0H-
publicvoid setPageSize(int pageSize){ 8QT<M]N%
this.pageSize = pageSize; St6aYK
} }x]&L/
ypH8QfxLTr
publicint getTotalCount(){ VLiIO"u;
return totalCount; 9*4 .
} /$;,F't#2M
#S%4?
publicvoid setTotalCount(int totalCount){ &B}Lo
if(totalCount > 0){ >L^xlm%7o
this.totalCount = totalCount; Yg/}ghF\
int count = totalCount / q7|:^#{av
#;`Oj
pageSize; xZX`%f-
if(totalCount % pageSize > 0) W$r^
count++; 88
{1mA,v
indexes = newint[count]; fO6[!M(
for(int i = 0; i < count; i++){ Nu@5 kwH
indexes = pageSize * G%S6$@:
tmp6hB
i; bMsECA&
} a.?v*U@z@#
}else{ ~F;CE"3A
this.totalCount = 0; $`pd|K`
} =ai2z2z
} %MN.O-Lc
W@^J6sH
publicint[] getIndexes(){ fe|g3>/|
return indexes; >:2}V]/;
} 6JSY56v
P'sfi>A
publicvoid setIndexes(int[] indexes){ :/6()_>bO
this.indexes = indexes; E4r.ky`#~
} A#(`9
ur6e&bTp
publicint getStartIndex(){ bw9
nB{C<
return startIndex; ]BfS270
} vs+QbI6>-
-j&Vtr
publicvoid setStartIndex(int startIndex){ fp{G|.SA
if(totalCount <= 0) 8.yCA
this.startIndex = 0; c_#*mA"+
elseif(startIndex >= totalCount) 1fY>>*oP
this.startIndex = indexes ><=rIhG%H@
JdiP>KXV
[indexes.length - 1]; Yrxk Kw#
elseif(startIndex < 0) ZYa\"zp-
this.startIndex = 0; G=|70pxU
else{ b,Ke>.m
this.startIndex = indexes Nt~x&s
^LVk5l)\>g
[startIndex / pageSize]; Um z05*
} ]boE{R!I
} L6+C]t}>6
yAG+] r
publicint getNextIndex(){ C',6%6P
int nextIndex = getStartIndex() + xIL#h@dz
0Gsu
pageSize; !"E-\cc'
if(nextIndex >= totalCount) (9]6bd
return getStartIndex(); zT7"VbP
else P$ucL~r
return nextIndex; O#EqG.L5
} <B)
:3^dF}>
publicint getPreviousIndex(){ fagM7)x
int previousIndex = getStartIndex() - #Ao !>qCE
DtI$9`~
pageSize; `*aBRwvK~
if(previousIndex < 0) +AoP{x$Ia
return0; U;U08/y
else rP'AJDuq
return previousIndex; O9^T3~x[V
} "Zcu[2,
HTk\723Rdw
} |9IC/C!HC
)3%@9
T@P!L
N*_"8LIfi_
抽象业务类 vk'rA{x
java代码: 8eJE>g1J
Y5Z!og
z)}!e,7
/** 9i=B
* Created on 2005-7-12 <6jFKA<
*/ ` 1+%}}!$u
package com.javaeye.common.business; 9x?'}
Vb!O8xV4;+
import java.io.Serializable; c-B/~&
import java.util.List; /e1(?
20
oa`#RC8N
import org.hibernate.Criteria; {DwIjy31T
import org.hibernate.HibernateException; ?pG/m%[
import org.hibernate.Session; =45W\
import org.hibernate.criterion.DetachedCriteria; .'T 40=7
import org.hibernate.criterion.Projections; {kL&Rv%'
import 3-|3`(
GeV+/^u
org.springframework.orm.hibernate3.HibernateCallback; .z-UOyer
import uel{`T[S
J,5+47b1}R
org.springframework.orm.hibernate3.support.HibernateDaoS wL3,g2- L
$a(`ve|
upport; bd==+
>c~RI7uu
import com.javaeye.common.util.PaginationSupport; ~3CVxbB^<
IQnIaZ
public abstract class AbstractManager extends ,T|x)"uA`
U~H?4Izl=
HibernateDaoSupport { 4 1t)(+r
;>>C)c4V "
privateboolean cacheQueries = false; V%NeZ1{ e
K_ke2{4Jm
privateString queryCacheRegion; Sh&PNJ-*
g"K>5Cb
publicvoid setCacheQueries(boolean a#[-*ou`
3FNT|QF
cacheQueries){ =Op+v"
this.cacheQueries = cacheQueries; (D7$$!}
} _<*Hv*Zm
)`+YCCa6F
publicvoid setQueryCacheRegion(String ;Vu5p#,O<M
(9C<K<
queryCacheRegion){ Kat&U19YH
this.queryCacheRegion = 7L3ik;>
;Ii1B{W
queryCacheRegion; _#C()Ro*P
} %j+xgX/&
:P+\p=
publicvoid save(finalObject entity){ .`p&ATgv
getHibernateTemplate().save(entity); fex,z%}p
} -VT+O+9_A
)L5i&UK.
publicvoid persist(finalObject entity){ )rm4cW_
getHibernateTemplate().save(entity); ;\{`Ci\
} f_=~H<j!
:iUF7P1I
publicvoid update(finalObject entity){ k'3Wt*i
getHibernateTemplate().update(entity); 6.c^u5;
} (gXN%rsY
Vba.uKNjk
publicvoid delete(finalObject entity){ RU#F8O
getHibernateTemplate().delete(entity); 1/Zh^foG
} se9>.}zZN
j
!H^-d}q
publicObject load(finalClass entity, S\#1 7.=
bC6oqF'#
finalSerializable id){ ,"2TArC'z
return getHibernateTemplate().load ~E5z"o6$
D Ml?o:l
(entity, id);
V
9;[M;
} 'T8W!&$
@)6jE!LC
publicObject get(finalClass entity, pv,45z0
O7G"sT1Dv
finalSerializable id){ k cuzB+
return getHibernateTemplate().get =E*Gb[r_7
Y.6SOu5$]
(entity, id); ~AB*]Us
} \jU |(DE
$XnPwOj
publicList findAll(finalClass entity){ >3.X?
return getHibernateTemplate().find("from Zjh2{ :
cr;`Tl~}s
" + entity.getName()); ,5Vt]#F5@
} jp2Q9Z
PBjmGwg7
publicList findByNamedQuery(finalString s^8u&y)3
]9 w76Z
namedQuery){ $ &UZy|9
return getHibernateTemplate 98XVa\|tl
2?q(cpsN
().findByNamedQuery(namedQuery); "sUyHt -&
} h*i9m o
/~p+j{0L3W
publicList findByNamedQuery(finalString query, =/0=$\Ws
K }$&:nao
finalObject parameter){ 3L5r*fa
return getHibernateTemplate !ZXUPH
pv)`%<
().findByNamedQuery(query, parameter); cmwPuK$
} TFQ!7'xk)
1GCzyBSbb
publicList findByNamedQuery(finalString query, 1fU,5+PH
dtt ~ Bd
finalObject[] parameters){ cC{"<fYF
return getHibernateTemplate 0%`4px4J
RO(TvZ0pE
().findByNamedQuery(query, parameters); D<$XyP
} 07v!Zj
l@Z6do
publicList find(finalString query){ 9LC&6Q5O&
return getHibernateTemplate().find i5}4(sV
),}AI/j;zY
(query); rVnd0K
} yR5XJ;Tct
ne}+E
publicList find(finalString query, finalObject EbNd=Z'J
Dh4
6o|P
parameter){ XRN+`J
return getHibernateTemplate().find iUk-'
W i.5Y{
(query, parameter); t<iEj"5
} X;F8_+Np
KJn!Ap
public PaginationSupport findPageByCriteria
08bJCH
bpAv1udX-W
(final DetachedCriteria detachedCriteria){ nAJdr*`a,5
return findPageByCriteria (.Y/
rh*sbZ68>E
(detachedCriteria, PaginationSupport.PAGESIZE, 0); y[};J
vk
} K>:]Bx#F7
xgu `Q`~
public PaginationSupport findPageByCriteria cf_|nL#9
#18 FA|
(final DetachedCriteria detachedCriteria, finalint d~J-|yyT
OWp%v_y]
startIndex){ B5%n(,Lx
return findPageByCriteria <6TT)t<h
2-*V=El
(detachedCriteria, PaginationSupport.PAGESIZE, q/9H..6
^ <`(lyph
startIndex); @D^^_1~
} u^Ku;RQo
U @v*0
public PaginationSupport findPageByCriteria PXoz*)tk
?4H#G)F
(final DetachedCriteria detachedCriteria, finalint Z6C=T;w
VXBY8;+Yp
pageSize, 38ES($
finalint startIndex){ eDI=nSo
return(PaginationSupport) _n8GWBi
q<W=#Sx
getHibernateTemplate().execute(new HibernateCallback(){ N7r_77%m0
publicObject doInHibernate `$LWmm#
:e1o<JgPt
(Session session)throws HibernateException { ~5
N)f
UI\
Criteria criteria = aVs(EHF
T VmH
detachedCriteria.getExecutableCriteria(session); sb_oD{+gW
int totalCount = lT&wO