Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ysfR@ sH7
yf!
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 <`sVu
ul+
+h4N
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-uNJ'.N
/_?E0r
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 }'dnL
wh:O"&qk
。 %b2.JGBqJ
|,j6cFNw
分页支持类: .!Kdi| a)
W$@q
~/E
java代码: *usfJ-
P@:#NU[
\Nu(+G?e
package com.javaeye.common.util; gM20n^
KUVsCmiT
import java.util.List; dWE[*a\g
"xlf6pm%
publicclass PaginationSupport { uAR!JJ
!mrB+<:
publicfinalstaticint PAGESIZE = 30; ~wIVw}
ehI*cf({
privateint pageSize = PAGESIZE; B2%)G$B
;uNcrv0J
privateList items; t<9oEjk["
4_J*
0=U
privateint totalCount; M ]W'>g)G
;"\e
aKl
privateint[] indexes = newint[0]; 0ANqEQX
b5
YE4h8%
privateint startIndex = 0; |Sy|E
g>x2[//pk
public PaginationSupport(List items, int H1f){L97wR
/] ce?PPC
totalCount){ _CPe
setPageSize(PAGESIZE); "-kb=fY
setTotalCount(totalCount); Z$Ynar
setItems(items); UXoaUW L
setStartIndex(0); a <FzHCw
} T{bM/?g
@0?Mwy!
public PaginationSupport(List items, int |cJyP9}n
8Vv"'CU#
totalCount, int startIndex){ 4aGV1u+4
setPageSize(PAGESIZE); &}VGC=F;d
setTotalCount(totalCount); ~Rk%M$E9
setItems(items); ;14[)t$
setStartIndex(startIndex); 9]BpP0f\
} ^<$dTr'
s2iR }<
public PaginationSupport(List items, int 4QdY"s(n
iCao;Zb
totalCount, int pageSize, int startIndex){ zuWj@YG\.
setPageSize(pageSize); xj)*K%re
setTotalCount(totalCount); W+&ZYN'E
setItems(items); tS8*l2Y`
setStartIndex(startIndex); LCK
} 'O8"M
xZjD(e'
publicList getItems(){ |Rw0$he
return items; fzRzkn:=
} tQbDP!,A*=
?C//UN;
publicvoid setItems(List items){ .GM&]Hb
this.items = items; x:O?Fj
} BS>|M}G)r
bgqN&J)Jr)
publicint getPageSize(){ QS,IM>Nr
return pageSize; }]N7CWy
} 7qV_QZ!.
QKYIBX
publicvoid setPageSize(int pageSize){ y'xB? >|
this.pageSize = pageSize; 7 w_`<b6
} ej4 7'#EY
+,9I3Dq
publicint getTotalCount(){ li8l+5d q
return totalCount; c~b[_J)
} !v<r=u
,(}7 ST
publicvoid setTotalCount(int totalCount){ abuHu'73
if(totalCount > 0){ bKYLBu:
this.totalCount = totalCount; [Oe$E5qv)]
int count = totalCount / uz".!K[,wE
5Jd&3pO
pageSize;
FAJ\9
if(totalCount % pageSize > 0) !]&a/$U
count++; aJ8 8U69
indexes = newint[count]; muo(bR8
for(int i = 0; i < count; i++){ bdk"7N
indexes = pageSize * ~4'e)g.hG
>,Zjlkh3
i; u^|XQWR$:
} uJA8PfbD
}else{ `MlQPLH
this.totalCount = 0; kB_G L>fc
} (]^9>3{|
} 9XX&~GW/
BJ<hP9#
publicint[] getIndexes(){ ,h5\vWZ
return indexes; o*eU0
} rV)mcfw:Z
m:d
P,
publicvoid setIndexes(int[] indexes){ a[]=*(AZI
this.indexes = indexes; _)O1v%]"4
} 9xyj,;P>
+^Eruv+F
publicint getStartIndex(){ ?P,z^
return startIndex; ~dC)EG
} )7Gm<r
3_~V(a
publicvoid setStartIndex(int startIndex){ UGj!I
if(totalCount <= 0)
ZK1d3
this.startIndex = 0; r@f8-!{s2h
elseif(startIndex >= totalCount) 2aX|E4F
this.startIndex = indexes Jm0P~E[n
'}e_8FS
[indexes.length - 1]; m"<0sqD;
elseif(startIndex < 0) >K1)XP
this.startIndex = 0; RmY5/IYR|:
else{ _,"T;i
this.startIndex = indexes 'U.)f@L#w
<w`
R;
[startIndex / pageSize]; _(5SiK R
} 21bvSK
} aB0L]i
_d76jmujJ
publicint getNextIndex(){ w&hgJ
int nextIndex = getStartIndex() + Q4Zuz)r*
@AaM]?=P{
pageSize; d
}=fJ
if(nextIndex >= totalCount) *%7 [{Loz
return getStartIndex(); gPh;
else No>XRG+
return nextIndex; XxcY
} !qS~YA
jB!p,fqcb
publicint getPreviousIndex(){ I;<0v@
int previousIndex = getStartIndex() - B\r2M`N5
Fm_^7|
pageSize; u\ro9l
if(previousIndex < 0) G|Rsj{2'
return0; 7"@^JxYN
else ^[,Q2MHCT(
return previousIndex; g(B &A
P_e
} M(KsLu1
4='Xhm
} t'|A0r$
m_zl*s*6
.T
6NMIp*
=e](eA;
抽象业务类 y<0zAsT
java代码: QMLz
a\>+!Vq
n/6#rj^$
/** NY
756B*
* Created on 2005-7-12 Y<-h#_
*/ FeoI+KA
package com.javaeye.common.business; jj_z#6{
*`Swv`
import java.io.Serializable; 4l7TrCB
import java.util.List; bc=,$
:7UC=GKQk
import org.hibernate.Criteria; \@;$xdA$
import org.hibernate.HibernateException; 45. -P
import org.hibernate.Session; dv-L!C
import org.hibernate.criterion.DetachedCriteria; M<^]Ywq*p
import org.hibernate.criterion.Projections; 7aRtw:PQn
import fqrQ1{%UH
V
6I77z
org.springframework.orm.hibernate3.HibernateCallback; fI"sdzu^
import O2;FaASF
<}t~^E,
org.springframework.orm.hibernate3.support.HibernateDaoS J9eOBom8e<
iGB1f*K%x
upport; H
xs'VK*
U;`C%vHff
import com.javaeye.common.util.PaginationSupport; J|,Uu^7`
-{`8Av5)E%
public abstract class AbstractManager extends \~m\pf?
5{Q5?M]
HibernateDaoSupport { (
m/ujz
:B{Wf 2<z
privateboolean cacheQueries = false; lC/1,Z/M
|_."U9!Z^
privateString queryCacheRegion; 8C]K36q
)Tjh
publicvoid setCacheQueries(boolean *N>n5B2
b.I_
cacheQueries){ >*s_)IH2
this.cacheQueries = cacheQueries; &H8wYs
} [As9&]Bv5
F-AU'o
*
publicvoid setQueryCacheRegion(String Em)U`"j/9
S&/,+x'c|
queryCacheRegion){ pHQrjEF*
this.queryCacheRegion = +7\$wc_1I@
g)$/'RB
queryCacheRegion; \]C_ul'
} -Zq\x'
-yOwX2Wv5;
publicvoid save(finalObject entity){ b S-o86u
getHibernateTemplate().save(entity); m%zo? e
} 3LGX ^J<f
j9gn7LS
publicvoid persist(finalObject entity){ i(T[
getHibernateTemplate().save(entity); `-t8ag3
} OT0%p)
)5T82=[h<
publicvoid update(finalObject entity){ /pY-how%!
getHibernateTemplate().update(entity); GDF/0-/Z
} aeZ$Wu>]W
')N[)&&Q{
publicvoid delete(finalObject entity){ `%QXaKO-
getHibernateTemplate().delete(entity); M~%P1@%
} m`i_O0T
&~mJ
).*
publicObject load(finalClass entity, H9;0$Y(e-
;~D$rT
finalSerializable id){ yFoPCA86y
return getHibernateTemplate().load $%BI8_
<W]
RyEg`
(entity, id); o|:c{pwq
} nTsKJX%\
Pi+pQFz5
publicObject get(finalClass entity, %k%%3L,
umT *
finalSerializable id){ 9|D*}OY>
return getHibernateTemplate().get e5RF6roxO
I(<9e"1O
(entity, id); Az7
]qb
} :@uIEvD?
(1EtC{
m
publicList findAll(finalClass entity){ 6VUs:iO1j5
return getHibernateTemplate().find("from KH$|wv
"I3
#/~q
" + entity.getName()); 8Y4mTW
} IR2=dQS
BP4xXdG
publicList findByNamedQuery(finalString @C-03`JWuK
s$% t2UaV
namedQuery){ Hr_5N,
return getHibernateTemplate {V,aCr
{Qi J-[q
().findByNamedQuery(namedQuery); :)Pj()Os|
} N0DzFXp
:KmnwYm
publicList findByNamedQuery(finalString query, &(7=NAQsE
dI%?uk
finalObject parameter){ 6k_Uq.<X
return getHibernateTemplate i0:1+^3^U
7s0\`eXo/
().findByNamedQuery(query, parameter); =cpUc]~
} },n?
q9:g
publicList findByNamedQuery(finalString query, lZAXDxhnT
=oBlUE
finalObject[] parameters){ rD+mI/_J`
return getHibernateTemplate VV;%q3}:
_ amP:h
().findByNamedQuery(query, parameters); {J1iheuS}
} %afN&T
hkb&]XWi[
publicList find(finalString query){ 9tX+n{i
return getHibernateTemplate().find Zg$S% 1(Q
i;rcgd
(query); H;R~d%!b
} mC0_rN^Aj
- "NK"nb
publicList find(finalString query, finalObject #c!rx%8I
Lqdapx"Z_
parameter){ }DQTy.d;P
return getHibernateTemplate().find 78 w
U9ZuD40\
(query, parameter); It7R}0Smg
} X n8&&w"
SRtw
public PaginationSupport findPageByCriteria Jz}`-fU`
VKkvf"X
(final DetachedCriteria detachedCriteria){ QM![tZt%;
return findPageByCriteria o\F>K'
a:8 MoH 4
(detachedCriteria, PaginationSupport.PAGESIZE, 0); ;4U"y8PVTh
} l?QA;9_R'
+OqEe[Wk#
public PaginationSupport findPageByCriteria ]#Cc7wa
9: .m]QN
(final DetachedCriteria detachedCriteria, finalint 35Fxzj $
42~.N=2
startIndex){ 55'
return findPageByCriteria Y)@Y$_
EK=
y!>
(detachedCriteria, PaginationSupport.PAGESIZE, [UXN=
76N
T/A2Y+@N;
startIndex); 2"HTD|yy
} *Y?oAVkz
4(*PM&'R
public PaginationSupport findPageByCriteria )Gavjj&uJ
DuNindo8
(final DetachedCriteria detachedCriteria, finalint `m#-J;la
Vpne-PW
pageSize, Jz=|-F(Sy
finalint startIndex){ ~4pP(
JP
return(PaginationSupport) |.,]0CRg
pHuR_U5*?
getHibernateTemplate().execute(new HibernateCallback(){ ^B0Qk:%P^N
publicObject doInHibernate t7l{^d_L
}toe'6
(Session session)throws HibernateException { m~
5"q%;
Criteria criteria = cF4,dnI
y=c={Qz@vn
detachedCriteria.getExecutableCriteria(session);
gyMHC{l/B
int totalCount = iGSA$U P|
67hfv e
((Integer) criteria.setProjection(Projections.rowCount gROK4'j6y
0^R, d M
()).uniqueResult()).intValue(); zz[fkH3
criteria.setProjection B2oKvgw
'da
'WZG
(null); O!%T<2i3
List items = rf-yUH]&S
}NoP(&ebz*
criteria.setFirstResult(startIndex).setMaxResults hf]m'5pb
.b+ix=:
(pageSize).list(); i(pHJP:a:
PaginationSupport ps = 2,dWD<h
5VP0Xa ~
new PaginationSupport(items, totalCount, pageSize, "!D y[J
=/_u k{
startIndex);
_XT'h;m
return ps; t/Y0e#9,
} Bcarx<P-p
}, true); 4xEw2F
} lyX3'0c
Vi: ^bv
public List findAllByCriteria(final W^H3 =hZ
.=9WY_@SZ
DetachedCriteria detachedCriteria){ :^Pks R
return(List) getHibernateTemplate );%H;X+x
PWyf3
().execute(new HibernateCallback(){ ~x!up9
publicObject doInHibernate A$r$g\5+
D/f4kkd
(Session session)throws HibernateException { MW6z&+Z
Criteria criteria = DrKB;6
?WHf%Ie2(
detachedCriteria.getExecutableCriteria(session); # H
w(w
return criteria.list(); iX6>u4~(
} u*v<