Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 V'W*'wo
.`+~mQ
Wn
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 IO"P /Q
ciml:"nQ
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 c|9g=DjK
a]V8F&)g#
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 h~Z &L2V
zc;kNkV#1Y
。 KO#kIM-
V
)oXJL
分页支持类: f['lY1#V1
__$ ;Z
java代码: D3dh,&KO\
ri59LY y=
">t^jt{
package com.javaeye.common.util; l9eTghLi
.U|'KCM9m
import java.util.List; 9(S=0<
';Nc;9
publicclass PaginationSupport { H@wjZ;R
yy8BkG(
publicfinalstaticint PAGESIZE = 30; t855|
gsM$VaF(
privateint pageSize = PAGESIZE; ]f&]E
~i
K3
BWj33
privateList items; %pOz%v~
SWI\;:k
privateint totalCount; 1<#D3CXK
gvo98Id
privateint[] indexes = newint[0]; NR_3nt^h
2D"my]FnF
privateint startIndex = 0; qtZzJ>Y
M$ieM[_T
public PaginationSupport(List items, int *'aJO}$
~b)X:ku
totalCount){ NwYQ6VEA
setPageSize(PAGESIZE); M\CzV$\y
setTotalCount(totalCount); Mpw]dYM
setItems(items); WK*tXc_[b
setStartIndex(0); ;ZI8vFb
} ,#,K_oz
oi7k#^
public PaginationSupport(List items, int N-F&=u}
1/:vFX
totalCount, int startIndex){ 6-"tQ,AZ
setPageSize(PAGESIZE); P8dMfD*"E
setTotalCount(totalCount); s,[I_IiPf
setItems(items); -nC&t~sD
setStartIndex(startIndex); e> 9X
} 7lwI]/ZH*
CckfoJ 9
public PaginationSupport(List items, int Sft
vN-
'G % ]/'_U
totalCount, int pageSize, int startIndex){ $=E4pb4Y
setPageSize(pageSize); VM<0_R24z
setTotalCount(totalCount); F{ vT^/
setItems(items); ZR3,dW6S
setStartIndex(startIndex); 8h|} Q _
} sRcd{)|Cq
EmUn&p%hI
publicList getItems(){ &4WA/'>R
return items; }15&<s
} ~$4(|Fq/
jA:'P~`Hj
publicvoid setItems(List items){ P(8Yz W
this.items = items; vS5}OV
} 6vNn;-gg.
%4x0^<k~
publicint getPageSize(){ %{r3"Q=;W
return pageSize; zB+e;x f |
} C,>n
8NNh8k#6
publicvoid setPageSize(int pageSize){ yxpv;v:)=
this.pageSize = pageSize; 5,f`5'$
} o!+'<IQ'
!fAvxR
publicint getTotalCount(){ + XBF,<P
return totalCount; A ?V-Sz#
} 58#nYt
[W$Mn.5<s
publicvoid setTotalCount(int totalCount){ )_ !a:
if(totalCount > 0){ ERK{smL
this.totalCount = totalCount; UJL'4 t/
int count = totalCount / _,K[kVn
Ofoh4BL'1@
pageSize; R>:D&$[RD
if(totalCount % pageSize > 0) 4pXY7+e2'
count++; RZpjr !R
indexes = newint[count]; xE--)=<$
for(int i = 0; i < count; i++){ JleClB(2n/
indexes = pageSize * _IU5HT}2
=eW4?9Uq
i; *zweZG8:
} Gy["_;+xU
}else{ .c<U5/
this.totalCount = 0; R1Rk00Ow:
} M8Bp-_
} "\;n t5L
Xqm?@JN
publicint[] getIndexes(){ rBL2A
return indexes; m !<FlEkN
} tuwlsBV
'NjeF6
publicvoid setIndexes(int[] indexes){ &DYC3*)Jih
this.indexes = indexes; ~0-)S@
} pl,XS6mB
ckP AH E@
publicint getStartIndex(){ @Q ~;@M
return startIndex; It/'R-H
} 7W4m&+
$;ny`^8
publicvoid setStartIndex(int startIndex){ |p*cI @
if(totalCount <= 0)
X_Lt{mf
this.startIndex = 0; {y@8E>y5$
elseif(startIndex >= totalCount) =$#5Ge]b
this.startIndex = indexes OC,yL Q
4n(w{W>
[indexes.length - 1]; e"sv_$*
elseif(startIndex < 0) #;8VBbc\^
this.startIndex = 0; vOKNBR2
else{ oo]P}ra
this.startIndex = indexes (?,jnnub
A\7sP =
[startIndex / pageSize]; _f>)G3p
} QRl+7V
} d?YSVmG
K9ih(fh)
publicint getNextIndex(){ dQp>z%L)
int nextIndex = getStartIndex() + oIj/V|ByK
>^#Liwm
pageSize; :si&A;k
if(nextIndex >= totalCount) ^o q|^O
return getStartIndex(); P$h) Y
else 5HbJE'
return nextIndex; &dw=jHt
} c@]G;> o
ca0vN^Ji
publicint getPreviousIndex(){ ^a3 (QKS
int previousIndex = getStartIndex() - W95q1f#7
7bGt'gvv
pageSize; bqF?!t<B
if(previousIndex < 0) 4C:dkaDq]
return0; {4[dHfIy
else t^6ams$
return previousIndex; cyjgi /Z
} i[.7 8K-s
+W-b3R:1>
} jL3
*m
wLO"[,
D"fjk1
:TnU} i_/h
抽象业务类 zC[LcC*+J
java代码:
}7fzEo`g
b/#<::D `
l_2l/ff9
/** L4u.cHJ}0
* Created on 2005-7-12 Q>w)b]d~c
*/ wax^iL!
package com.javaeye.common.business; _q@lP|
kwS[,Qy\
import java.io.Serializable; [CV0sYEA
import java.util.List; q~AvxO
vu*{+YpH
import org.hibernate.Criteria; 0&&P+adk
import org.hibernate.HibernateException; drwxrZt
import org.hibernate.Session; [%Dh0hOg
import org.hibernate.criterion.DetachedCriteria; Bz:Hp{7&
import org.hibernate.criterion.Projections; d|UH AX
import 8)`
'}>8+vU`
org.springframework.orm.hibernate3.HibernateCallback; O7&OCo|b%>
import fR2,NKM@
oc-o>H
org.springframework.orm.hibernate3.support.HibernateDaoS j~;y~Cx?
FS?1O"_
upport; Skux&'N:
%A&g-4(
import com.javaeye.common.util.PaginationSupport; <x$fD37
> -fXn
public abstract class AbstractManager extends `C6,**`R$k
K_N`My
HibernateDaoSupport { NY[48H
F?y
C=
privateboolean cacheQueries = false; r|3u]rt
ZiH4s|
privateString queryCacheRegion; bhZ5-wo4%
DAMw(
publicvoid setCacheQueries(boolean hSh^A5
/
`I|Y7GoUO
cacheQueries){ cIuCuh0I`
this.cacheQueries = cacheQueries; pFo,@M
} dftX$TS
`\BBdQ#bH
publicvoid setQueryCacheRegion(String 6p,}?6^
Fk`6
q
queryCacheRegion){ 0 R&7vn
this.queryCacheRegion = 3`"k1W
]<fZW"W<q
queryCacheRegion; }4Gn$'e
} *Hh*!ePp
hH?ke(&=f
publicvoid save(finalObject entity){ _B}QS"A
getHibernateTemplate().save(entity); oJ=u
pnBn-
} WCI'Kh
PCKxo;bD
publicvoid persist(finalObject entity){ |ew:}e: k<
getHibernateTemplate().save(entity); % <%r
} ,fm{
krE
:3}K$
publicvoid update(finalObject entity){ R*vfp?x
getHibernateTemplate().update(entity); >4T7DMy
} =D 5!Xq'|
Zk gj_
publicvoid delete(finalObject entity){ ].gC9@C:$i
getHibernateTemplate().delete(entity); pl 1CEoe
} +k
vZSwX@0
publicObject load(finalClass entity, WMoRosL74
_p+q)#.W
finalSerializable id){ ljh,%#95=
return getHibernateTemplate().load B8V85R
mj2sbRiSR=
(entity, id);
ck`$ `
} Oo%%f+
u,@x7a,z
publicObject get(finalClass entity, XToYtdt2
D4+OWbf6
finalSerializable id){ [rhK2fr:i
return getHibernateTemplate().get `[f IK,
-n$hm+S
(entity, id); 7q^a@5f BG
} w:9n/[
^`(3X
publicList findAll(finalClass entity){ X*:)]p(R
return getHibernateTemplate().find("from )|S!k\^A
~eGtoEY
" + entity.getName()); Sj4 @pMh4
} [#2z=Xg
\88IFE
publicList findByNamedQuery(finalString }e,*'mCC*
?)+I'lW!
namedQuery){ ?~~,?Uxw!
return getHibernateTemplate NVo=5
<ZeZq
().findByNamedQuery(namedQuery); <$'FTv
} 0OVxx>p/x
HG})VPBa
publicList findByNamedQuery(finalString query, 9'\*Ip^
ob=IaZ@?
finalObject parameter){ 9KZLlEk5O
return getHibernateTemplate %|?PG i@5
x$V[xX
().findByNamedQuery(query, parameter); /57)y_ \
} Pexg"328
)G9,5[
publicList findByNamedQuery(finalString query, 9=MxuBl
e5cvmUF_W
finalObject[] parameters){ y8O<_VOO}"
return getHibernateTemplate a 1pa#WC
}Xy<F?Mh
().findByNamedQuery(query, parameters); N6S}u@{J~N
} ;KW}F|
fYZ)5xnj
publicList find(finalString query){ 6imQjtI
return getHibernateTemplate().find e_CgZ
*ps")?tlC
(query); 6rzXM`cs
} \Ot,&Z k2
?bK^IHh
publicList find(finalString query, finalObject W6uz
G
;(9q, )
parameter){ UR.l*+<W7
return getHibernateTemplate().find e@crM'R7Lo
>I.X]<jI
(query, parameter); C&KH.h/N
} HA(G q
^Zw1X6C5~
public PaginationSupport findPageByCriteria Y[ toN9,
Yf,U2A\
(final DetachedCriteria detachedCriteria){ Y+#VzIZw
return findPageByCriteria _n_|skG
o8ADAU"
(detachedCriteria, PaginationSupport.PAGESIZE, 0); c27A)`
} M&K'5G)7
,Tc598D
public PaginationSupport findPageByCriteria dJd(m&.|N
Q68q76
(final DetachedCriteria detachedCriteria, finalint !XS ;&s7[*
N;]"_"
startIndex){ '0>w_ge4
return findPageByCriteria 2q.J1:lW
M2e_)f:
(detachedCriteria, PaginationSupport.PAGESIZE, ;?0k>
ojZvgF
startIndex); V,)bw
} =;^#5dpt$
Zo|# ,AdE>
public PaginationSupport findPageByCriteria r%~/y
(Y%pk76d
(final DetachedCriteria detachedCriteria, finalint u>o2lvy8
sKI{AHJ?X
pageSize, rXlJW]i
finalint startIndex){ WfE,U=e*
return(PaginationSupport) I='S).
&]Q\@;]Aq
getHibernateTemplate().execute(new HibernateCallback(){ StJ&YYdD
publicObject doInHibernate \sZ!F&a~
0(!D1G{ul
(Session session)throws HibernateException { h*9s^`9)
Criteria criteria = H"A|Z6y$^
z<c@<M=Q*
detachedCriteria.getExecutableCriteria(session); fB3W} dr
int totalCount = !4B($]t
VCZ.{MD
((Integer) criteria.setProjection(Projections.rowCount D|p`~(
2-*zevPiG=
()).uniqueResult()).intValue(); Jx8?x#}
criteria.setProjection 4:p+C-gs
|+Fko8-
(null); 'XHKhpm<
List items = UfnjhHu
Hqpw Q
criteria.setFirstResult(startIndex).setMaxResults R4Vi*H
{m/h3hjFa
(pageSize).list(); !yQ# E2/A
PaginationSupport ps = A\7qPfpG
LD~/*
new PaginationSupport(items, totalCount, pageSize, 8QN#PaY
=)GhrWeVi4
startIndex); i?&g;_n^
return ps; H#luG_)
} +84JvOkWi
}, true); Hki
} s<t*g]0`/
P=%'2BQ{{
public List findAllByCriteria(final AF}6O(C~
!Z*2X
^
DetachedCriteria detachedCriteria){ ~;A36M-[.
return(List) getHibernateTemplate <