Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 g+h)s!$sB
U-(2;F)
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 o*H j E
VH1PC
据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 Eh\0gQ=
e,/b&j*4th
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 _gZ8UZ)
?2l#=t?PP
。 KWIH5* AM
VA*~RS
分页支持类: <oG+=h
q6'3-@%
java代码: NqcmjHvy
in_~,fd
7(B|NYq
package com.javaeye.common.util; Z+h^ ie"g
"HTp1
import java.util.List; -.=q6N4
k@nx+fO}P
publicclass PaginationSupport { <H3 njv
sev^
publicfinalstaticint PAGESIZE = 30; Dpp3]en.
w7NJ~iy
privateint pageSize = PAGESIZE; vKYdYa\
z6e)|*cA$
privateList items; ]O2ku^yM
v2R41*z,
privateint totalCount; $ )ps~
!HyPe"`oL
privateint[] indexes = newint[0]; qa
'YZE`
p?S:J`q
privateint startIndex = 0; e R"XXF0u
|r*btyOJk
public PaginationSupport(List items, int FT'_{e!M
vq yR aaMf
totalCount){ S'~Zlv3`
setPageSize(PAGESIZE); ~_v?M%5i
setTotalCount(totalCount); |&vQ1o|}
setItems(items); | _/D-m*
setStartIndex(0); [V'3/#Z
} tpw0j
CVu
&>kklP
public PaginationSupport(List items, int a86m?)-c
FtbqZN[
totalCount, int startIndex){ csZIBi
setPageSize(PAGESIZE); j.O7-t%C
setTotalCount(totalCount); hM
setItems(items); 5m2(7FC%su
setStartIndex(startIndex); WK5~"aw
} g7!P|
1{\{'EP{
public PaginationSupport(List items, int \5UwZx\
fRKO> /OT
totalCount, int pageSize, int startIndex){ qGG
setPageSize(pageSize); 1;E[Ml
setTotalCount(totalCount); JJJlgr]#
setItems(items); BEM_y:#
setStartIndex(startIndex); IxC/X5Mp^q
} (5[|h
c`~aiC`l
publicList getItems(){ DE3>F^ j
return items; G4g<PFx
} '@'~_BBZP
Qo+_:N
publicvoid setItems(List items){ pC,MiV$c"
this.items = items; S%n5,vwE
} SpbOvY=>
xzF@v>2S+
publicint getPageSize(){ "<b~pfCOQk
return pageSize; (9q61zA
} v|acKux=t
lV!ecJw$
publicvoid setPageSize(int pageSize){ j~!0n[F
this.pageSize = pageSize; Q:?]:i/*
} < V) T_
X}b%gblx
publicint getTotalCount(){ 3XY;g{`=q
return totalCount; `-!t 8BH
} \IY)2C<e
*=i|E7Irg
publicvoid setTotalCount(int totalCount){ a>A29*q
if(totalCount > 0){ K~**. NF-n
this.totalCount = totalCount; clK3kBh~&
int count = totalCount / hEAt4z0P
vtw{
A}
pageSize; @f442@_4
if(totalCount % pageSize > 0) "o&_tB;O
count++; ZY-UQ4_|u
indexes = newint[count]; E>~DlL%
for(int i = 0; i < count; i++){ [FLRrTcE
indexes = pageSize * cy|]}n85
j>XM+>
i; vy W/f
} yQb^]|XG
}else{ v3
4!rL
this.totalCount = 0; 7eb^^a?
} %g7 !4
} 9`4mvK/@
H@0i}!U64
publicint[] getIndexes(){ 2\&uO
return indexes; K(RG:e~R0i
} ]~~PD?jh
UO^"<0u
publicvoid setIndexes(int[] indexes){ &UH .e
this.indexes = indexes; v-2_#
} [)U|HnAJ
HNN,1MN
publicint getStartIndex(){ hMz= \)Pl
return startIndex; _?Zg$7VJ
} uPbvN[~t
xVHZZ?e
publicvoid setStartIndex(int startIndex){ u 0KVp6`
if(totalCount <= 0) s.z (1MB]
this.startIndex = 0; '&@'V5}C{
elseif(startIndex >= totalCount) {J3;4p-&
this.startIndex = indexes GkqKIs
x zmg'Br
[indexes.length - 1]; ("UcjB^62
elseif(startIndex < 0) "w]
Bq0
this.startIndex = 0; R,[dEP
else{ lN$#lyy
this.startIndex = indexes Dd8*1,
(xw) pR
[startIndex / pageSize]; e"HA.t[A
} j4H]HGHv
} ]kUF>Wp
Yt79W
publicint getNextIndex(){ F9(*MP|
int nextIndex = getStartIndex() + /bm$G"%d
y]$%>N0vLX
pageSize;
B|E4(,]^
if(nextIndex >= totalCount) v-u53Fy
return getStartIndex(); 7+wy`xi
else /IS_-h7>XS
return nextIndex; ^g/
} 4'JuK{/ A7
_bB:1l?V
publicint getPreviousIndex(){ [5>f{L!<T<
int previousIndex = getStartIndex() - q_PxmPE@3v
?m5@ 635
pageSize; 2(V;OWY(@
if(previousIndex < 0) e1a8>>bcI
return0; kGm-jh
else *'D(
j#&
return previousIndex; k2{*WF
} 5tUp[/]pl
h^ wu8E
} >jxo,xz
|r2U4^
Wt=QCutt
`8^4,
抽象业务类 tow0/Jt
java代码: .OI&Zm-
l1*qDzb
#~]S
/** SSH ))zJ
* Created on 2005-7-12 Y'tPD#|r
*/ {&Kck>C'
package com.javaeye.common.business; i?"
~g!A
,e\'Y!'
import java.io.Serializable; .$nQD.X
import java.util.List; zzlV((8~
A2 'W
import org.hibernate.Criteria; :^~I@)"ov
import org.hibernate.HibernateException; )EQWc0iKG
import org.hibernate.Session; k=D_9_
import org.hibernate.criterion.DetachedCriteria; &&Ruy(&]I
import org.hibernate.criterion.Projections; .}'49=c
import t"[x x_i
t){})nZ/4
org.springframework.orm.hibernate3.HibernateCallback; dqd:V$o
import m$b5Vqq
8Mx+tA
org.springframework.orm.hibernate3.support.HibernateDaoS z0=(l?)#
9K~0:c
upport; h/`]=kCl
=[]V$<G'w{
import com.javaeye.common.util.PaginationSupport; o@SL0H-6|
\@IEqm6
public abstract class AbstractManager extends O |45r
?U+^ctwv7
HibernateDaoSupport { (`C#Tq
PuyJ:#a
privateboolean cacheQueries = false; ko-| hBNv
Mf 'T\^-!
privateString queryCacheRegion; i=Nq`BoQf
&sh5|5EC
publicvoid setCacheQueries(boolean M*XAyo4fI
^d2#J
cacheQueries){ kg0X2^#b
this.cacheQueries = cacheQueries; 6/u]r
} ) -yJKmV
5Ii`|?vg
publicvoid setQueryCacheRegion(String ]Rah,4?9f
bYsK|n
queryCacheRegion){ b,vSE,&xP
this.queryCacheRegion = GWb=X cx
&<??,R14
queryCacheRegion; ']Q4SB"q
} !4"(>Rnw
uY 6]rt_#a
publicvoid save(finalObject entity){ X/< zxM
getHibernateTemplate().save(entity); ~SKV%
} .`./MRC
1Q[I $=-F
publicvoid persist(finalObject entity){ "cJ))v-'
getHibernateTemplate().save(entity); ;U+4!N
} QT\||0V~p
Ag[Zs%X
publicvoid update(finalObject entity){ Kkfz a
getHibernateTemplate().update(entity); 2HA-q),6
} {owXyQ2mK
rlUo#
publicvoid delete(finalObject entity){ q<Tx'Y a
getHibernateTemplate().delete(entity); #bI,;]T
}
6z-ZJ|?
NUSb7<s,&Y
publicObject load(finalClass entity, D\13fjjHlu
V\1pn7~V
finalSerializable id){ dnEIR5%+.
return getHibernateTemplate().load =@e3I)D#?i
qr$h51C&
(entity, id); Sj=x.Tr\
} g|STeg g
SSr#MIS?
publicObject get(finalClass entity, &A/k{(.XP
4F[4H\>'
finalSerializable id){ 7'IcgTWDZy
return getHibernateTemplate().get =()Vrk|uK
D*T*of G
(entity, id); Ms4~P6;%
} r6WSX;K
B3AWJ1o
publicList findAll(finalClass entity){ /RG>n
return getHibernateTemplate().find("from k7L-J
y$Nqw9
" + entity.getName()); }Gvu!a#R
} !=uaB.
\v\f'eQ
publicList findByNamedQuery(finalString {[I]pm~n
ey/{Z<D
namedQuery){ _%R]TlL
return getHibernateTemplate {l0[`"EF
:P'M|U
().findByNamedQuery(namedQuery); 1hTE^\W
} 1]&FB{l
+,g3Xqs}X
publicList findByNamedQuery(finalString query, }Quk n
&':Ecmo~`
finalObject parameter){ $@Bd}35 J
return getHibernateTemplate -v@LJCK7I
]z77hcjB1
().findByNamedQuery(query, parameter); *\$m1g7b
} C%RYQpY*c
"
""k}M2A
publicList findByNamedQuery(finalString query, +nAbcBJAl
o;kxu(>yL'
finalObject[] parameters){ i! <1&{
return getHibernateTemplate !VDNqW
-P6Z[V%
().findByNamedQuery(query, parameters); n g,&;E
} |KMwK
png
0s$;3qE
publicList find(finalString query){ <u_vL
WS
return getHibernateTemplate().find TSKT6_IJw
dug^o c1
(query); z7X,5[P
} m7#v2:OD+
e,K.bgi
publicList find(finalString query, finalObject 5:yRFzhqd
#c%FpR4
parameter){ v ^R:XdH
return getHibernateTemplate().find `GU Gy. b
"Snt~:W>
(query, parameter); GBY-WN4sc[
} 0$g;O5y"i
4JO[yN
public PaginationSupport findPageByCriteria *|4/XHi
]N;\AXZ7
(final DetachedCriteria detachedCriteria){ gyz_$T@x
return findPageByCriteria wJc`^gj
,;@vVm'}
(detachedCriteria, PaginationSupport.PAGESIZE, 0); FP<mFqy
} ]r\FC\n6e
d-cW47
public PaginationSupport findPageByCriteria e>T;'7HSS"
^wIg|Gc
(final DetachedCriteria detachedCriteria, finalint i5 0c N<o
oTN:Q"oK7?
startIndex){ h!mx/Hx
return findPageByCriteria ucYweXsO3
5W!#,jz
(detachedCriteria, PaginationSupport.PAGESIZE, dQs>=(|t
&_$0lIDQ
startIndex); r_hs_n!6
} ";U#aK1p
8-"D.b4
public PaginationSupport findPageByCriteria ]~:WGo=_
QJy1j~9x
(final DetachedCriteria detachedCriteria, finalint K>vi9,4/ks
$%6.lQ
pageSize, #LR.1zZ
finalint startIndex){ ~s{
V!)0
return(PaginationSupport) w9w=2 *
Sq SiuO.D
getHibernateTemplate().execute(new HibernateCallback(){ &+]-e;[
publicObject doInHibernate 9e*o$)j_
9$#@Oe8*
(Session session)throws HibernateException { ]++,7Z\AU
Criteria criteria = ,m Nd#
YTD&swk
detachedCriteria.getExecutableCriteria(session); TD sjNFe3
int totalCount = [XhG7Ly
RT.
%\)))
((Integer) criteria.setProjection(Projections.rowCount V!Pe%.>
@u@,Edh
()).uniqueResult()).intValue(); ,4j^lgJ
criteria.setProjection E?0Vo%Vh
f hjlt#
(null); hTQ8y10a
List items = (?xR<]~g*
`>- 56 %
criteria.setFirstResult(startIndex).setMaxResults 0|DyYu
fcTg/EXn
(pageSize).list(); " ?Ux\)*
PaginationSupport ps = ti^=aB
_;,"!'R`f
new PaginationSupport(items, totalCount, pageSize, xpJ=yxO
m
al?3*x/
startIndex); I|l5e2j
return ps; 9vP#/ -g
} tlM >=s'T
}, true); t$&'mJ_-w
} zZW5M^z8
"/yS HB[
public List findAllByCriteria(final Pm]lr|Q{I
*P/DDRq(2
DetachedCriteria detachedCriteria){ S.Q:O{]
return(List) getHibernateTemplate Q?bCQZ{-Lh
. H}R}^
().execute(new HibernateCallback(){ PpLiH9}
publicObject doInHibernate =$y;0]7Lwi
Q@!XVQx4
(Session session)throws HibernateException { G{!(2D 4!
Criteria criteria = 4F"%X&$
u+O"c
detachedCriteria.getExecutableCriteria(session); "rrw~
return criteria.list(); vm7ag 7@O
} q|}O-A*wa
}, true); fRb
} /:v}Ni"6nF
`-.6;T}2U
public int getCountByCriteria(final "g*`G<