Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ZW`wA2R0
b}Wm-]|+
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Wrs6t
t`'5|
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 mZ#h p}\.
!.[H!-V.
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 _PGS"O?j
sQ8kLS_q8
。 j&Y{
CFuZ
)q>q]eHz
分页支持类: .Tc?PmN
UUqA^yJ
java代码: 0;2ApYks
Ex4)R2c*
lh*!f$2~
package com.javaeye.common.util; "1ov<
c>L#(D\\
import java.util.List; ;!pJ%p0Sc
uX~YDy
publicclass PaginationSupport { l#rr--];
oU)3du
publicfinalstaticint PAGESIZE = 30; l'kVi
YguY5z
privateint pageSize = PAGESIZE; `WlQ<QEi
]DLs'W;)
privateList items; h[r)HX0hA
:djbZ><
privateint totalCount; :;N2hnHoG
V7$-4%NL
privateint[] indexes = newint[0]; c!J|vRA5
->5[C0: ]
privateint startIndex = 0; f- ~]
F3&:KZ!V&m
public PaginationSupport(List items, int TJz}
8-#t
&?3P5dy_
totalCount){ UaM&/K9
setPageSize(PAGESIZE); ~A,(D-
setTotalCount(totalCount); GLa_[9 "
setItems(items); KKM!($A
setStartIndex(0); +p0Y*.
} W>J1JaO
osI0m7ws:
public PaginationSupport(List items, int K8/I+#j
M
nDaag
totalCount, int startIndex){ "rR$2`v"
setPageSize(PAGESIZE); SI:Iv:>
setTotalCount(totalCount); x)-n[Fu
setItems(items); 8QN/D\uq
setStartIndex(startIndex); dW#?{n-H<
} =[IKwmCX
Q6=>*}Cm6m
public PaginationSupport(List items, int \bv JZ_
8o[+>W
totalCount, int pageSize, int startIndex){ 9[Xe|5?c
setPageSize(pageSize); :[bpMP<bz;
setTotalCount(totalCount); drh,=M\F
setItems(items); zN7Ou .
setStartIndex(startIndex); gutf[Ksu
} 'Ad |*~
r,cK#!<%
publicList getItems(){ [G7S
return items; ~Ut?'}L(
d
} .5+5ca
#E@X'jwu
publicvoid setItems(List items){ 1-?TjR
this.items = items; 0{sYD*gK]
} >3)AO04=;
d2tJ=.DI
publicint getPageSize(){ 48[b1#q]
return pageSize; >on' y+
} q]OgT4ly
8t1,_,2'
publicvoid setPageSize(int pageSize){ 9~yp=JOV@
this.pageSize = pageSize; a\Dw*h?b~
} 0m'tPFQ|
^LAdN8Cbb
publicint getTotalCount(){ 4/E>k <MA
return totalCount; -k}&{v
} -SKcS#IF
-|`E'b81
publicvoid setTotalCount(int totalCount){ f4&k48Ds
if(totalCount > 0){ },vVc/
this.totalCount = totalCount; P*9L3R*=N
int count = totalCount / #4ii!ev
F/0x`l
pageSize; #5mnSky+s
if(totalCount % pageSize > 0) A?Gk8
count++; S")*~)N@
indexes = newint[count]; YveNsn
for(int i = 0; i < count; i++){ 'cvc\=p
indexes = pageSize * 6|ENDd[
l&6+ykQ
i; tk'3Q 1L
} G?v]|wdI
}else{ q{RT~,%
this.totalCount = 0; * ;<>@*
} {iq)[)n
} o Np4> 7Lk
meR5E?Fm
publicint[] getIndexes(){ $d%NFc&
return indexes; gclw>((5
} q%c"`u/v/
X1\ao[t<;c
publicvoid setIndexes(int[] indexes){ GM>Ms!Y
this.indexes = indexes; e%.|PZ)
} HD9+4~8
i0*6o3h
publicint getStartIndex(){ 6Z68n
return startIndex; d> L*2 g
} }ygxmb^@Z
I=o/1:[-
publicvoid setStartIndex(int startIndex){ L6"?p-:@'
if(totalCount <= 0) _dynqF8*
this.startIndex = 0; VU(#5X%Pn
elseif(startIndex >= totalCount) hwdZP=X
this.startIndex = indexes LOlj8T8Z
>;OwBzB
[indexes.length - 1]; pQOT\- bD
elseif(startIndex < 0) hPgDK.R'
this.startIndex = 0; a$h
zG-
else{ 7;H P_oAu
this.startIndex = indexes $Y_v X
2
ulxy 4] h
[startIndex / pageSize]; *OMW" NZ;
} 1[H1l;
} qjVhBu7A
iV8O<en&i
publicint getNextIndex(){ qlIbnyP<
int nextIndex = getStartIndex() + GXx/pBdy[4
iJ 8I#
j+N
pageSize; \[;Qqn0
if(nextIndex >= totalCount) 7P7d[KP<
return getStartIndex(); i 79;;9M
else 8WL*Pr1I
return nextIndex; o9L$B
} u4;#~##
{_1zIt|
publicint getPreviousIndex(){ (S#nA:E
int previousIndex = getStartIndex() - [wR x)F"
_#rE6./@q
pageSize; Y)OTvKrOA
if(previousIndex < 0) &P3ep[]j
return0; Y"Y+U`Qt
else Pg/$N5->
return previousIndex; zoI0oA
} 9Z;"9$+M
QX&1BKqWn
} coFQu ;i
osW"b"_f
a gM I$
/J` ZO$
抽象业务类 8lcB.M
java代码: '*,P33h9<!
-p2 =?a
f+j-M|A
/** (DrDWD4_
* Created on 2005-7-12 ~q05xy8
*/ R=u!RcvR
package com.javaeye.common.business; <zE~N~;
C'Z6l^{>
import java.io.Serializable; X6lUFko
import java.util.List; Z=\wI:TY1
)k'4]=d
<
import org.hibernate.Criteria; @F,8M
import org.hibernate.HibernateException; gg%9EJpP
import org.hibernate.Session; 'Xw>?[BB
import org.hibernate.criterion.DetachedCriteria; sQ8_j
import org.hibernate.criterion.Projections; +p#Q|o'
import l4`HuNR1
FW7@7cVoF
org.springframework.orm.hibernate3.HibernateCallback; lL{1wCsl
import O9(6 ?n
#K_E/~
org.springframework.orm.hibernate3.support.HibernateDaoS zM*PN|/%sH
CH3bpZv
upport; " .:b43Z
`SGI
Qrb
import com.javaeye.common.util.PaginationSupport; ($A0umW1%
%h-?ff[
public abstract class AbstractManager extends Q( \2(x\
_ZU.;0
HibernateDaoSupport { #+]-}v3
9#A&Qvyywg
privateboolean cacheQueries = false; 4x%R4tk
|g}~7*+i
privateString queryCacheRegion; #X?#v7i",D
m? #J`?E
publicvoid setCacheQueries(boolean ?IHa>f:
MY `V0
cacheQueries){ 6}9`z8
this.cacheQueries = cacheQueries; <.qhW^>X
} R"
'=^
:k*3?*'K
publicvoid setQueryCacheRegion(String #>/stU-
m^rrbU+HM?
queryCacheRegion){ iS%md
this.queryCacheRegion = b`Agb<x"
/,cyp.
queryCacheRegion; o$FYCz n
} E5U{.45
)@OKL0t
publicvoid save(finalObject entity){ 'z.:
e+Q_
getHibernateTemplate().save(entity); =$t
} :i>/aRNh1
\C(dWs
publicvoid persist(finalObject entity){ 6EeK5XLf,
getHibernateTemplate().save(entity); tQ >
IJ
} +f- E8q
Lj(y>{y
publicvoid update(finalObject entity){ -<GSHckD
getHibernateTemplate().update(entity); 6*92I
} ka$oUB)iQ
"Yu';&
publicvoid delete(finalObject entity){ lp=8RbQYC
getHibernateTemplate().delete(entity); (#"iZv,
} ID1/N)56
f/Q7WXl0
publicObject load(finalClass entity, IR<`OA
3S_H hvB
finalSerializable id){ L% cr `<~
return getHibernateTemplate().load nB+ e2e&
OG&X7>'3I{
(entity, id); .oR_r1\y
} NtnKS@Ht
IhYTK%^96
publicObject get(finalClass entity, oA1d8*i^E
eGJ}';O,g
finalSerializable id){ W7ffdODb
return getHibernateTemplate().get 7<ZCeM2x
;0!rq^JG
(entity, id); zu8l2(N
} cqyrao3;
Ao/KB_4f*Q
publicList findAll(finalClass entity){ aAX(M=3
return getHibernateTemplate().find("from s[HQq;S
[8J/#!B
" + entity.getName()); )K+Tvx3(m
} !ufSO9eDx"
|GQFNrNx
publicList findByNamedQuery(finalString (Z72 3)
AX= 4{b'
namedQuery){ s{]2~Z^2od
return getHibernateTemplate a#qC.,$A
t LzX L*
().findByNamedQuery(namedQuery); TnvX&Y'
} MSMgaw?
[sT}hYh+
publicList findByNamedQuery(finalString query, -#ta/*TT:
8eVQnp*
finalObject parameter){ HSR^R
return getHibernateTemplate cI Byv I-
l$s8O0-'T
().findByNamedQuery(query, parameter); =H\ig%%E@
} =!RlU)w
ct3^V M&/
publicList findByNamedQuery(finalString query, =h{jF7
6UkX?I`>
finalObject[] parameters){ sP+ZE>7
return getHibernateTemplate 6_w;dnVA
FLI0C
().findByNamedQuery(query, parameters); q ["T6
} dgIEc]#pH
0y"Ra%Y
publicList find(finalString query){ BP7&wd
return getHibernateTemplate().find y,`SLgBID
3]iBX`Ni
(query); !PFc)J
} #)r
{J}Zv5
publicList find(finalString query, finalObject ^q uv`d
UUF;Q0X
parameter){ iw$n*1M
return getHibernateTemplate().find ?5> Ep:{+/
'z=QV {ni
(query, parameter); q
i27:oJ
} -Xw i}/OX
QE.a2
}
public PaginationSupport findPageByCriteria *k]izWsV*
e uF@SS
(final DetachedCriteria detachedCriteria){ ,/qS1W(
return findPageByCriteria D\Nhq Vw
A{!D7kwTz~
(detachedCriteria, PaginationSupport.PAGESIZE, 0); ?1f(@
} NG2@.hP:uU
j;|rI`67~
public PaginationSupport findPageByCriteria f~LM-7!zf}
B tZycI
(final DetachedCriteria detachedCriteria, finalint 8u401ddg
0PK*ULwSN
startIndex){ 3r)<:4a
u&
return findPageByCriteria ^_cR
!/6`<eQ
`
(detachedCriteria, PaginationSupport.PAGESIZE, jNIZ!/K
zuR F6?un
startIndex); L)sCc0fv7k
} B@Ae2_;
3+%c*}KC~
public PaginationSupport findPageByCriteria "2}E ARa
RK*ZlD<
(final DetachedCriteria detachedCriteria, finalint dh~+0FZ{A
<]u~;e57
pageSize, C>?`1d@
finalint startIndex){ Qo!/n`19
return(PaginationSupport) wuv2bd )+
Iaq7<$XU
getHibernateTemplate().execute(new HibernateCallback(){ k lRS:\dW
publicObject doInHibernate K'`N(WiL
d `z),A=
(Session session)throws HibernateException { O=HT3gp&
Criteria criteria = .[Z<r>
{ws:g![
detachedCriteria.getExecutableCriteria(session); H^N@fG<*dh
int totalCount = Z.Sq5\d
kO]],Vy`
((Integer) criteria.setProjection(Projections.rowCount @y (9LSs
6<h?%j(
()).uniqueResult()).intValue(); v\Y362Xv
criteria.setProjection 6%K,3R-d
!;YmLJk;hN
(null); ?0Qm
List items = )1>fQ9
#8!xIy
criteria.setFirstResult(startIndex).setMaxResults f2sv$#'
-m&