Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 u&Xn#fh
LtDGu})1
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 rY=dNK]d
&nn+X%m9g
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 5[+E?4,&
x@VZJrQQ
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 N2EX`@_2
Ymcc|u6 $"
。 .Dyxul
*ur [u*g
分页支持类: Zdu8axK:
Bnd Y\
java代码: Wl>$<D4mO[
AcY!
KSl@V>!_
package com.javaeye.common.util; yuB\Z/
8&y3oxA,
import java.util.List; p@=B\A]
3)~z~p7
publicclass PaginationSupport { 3%V VG~[
1GgG9I
publicfinalstaticint PAGESIZE = 30; V7Mp<x%
1d~cR
privateint pageSize = PAGESIZE; }z wHUf9q1
MB(l*ju0
privateList items; ! lm0zR
^: V6=
privateint totalCount; (qy82F-|2
x4S0C[k
privateint[] indexes = newint[0]; l`<u\],
0o&c8?@j
privateint startIndex = 0; - z"D_5
\]p[DYBY#
public PaginationSupport(List items, int vM/D7YS:
@I0[B<,:G
totalCount){ ~_yz\;#
setPageSize(PAGESIZE); %-, -:e
setTotalCount(totalCount); ~]lVixr9
setItems(items); 'uV;)~
setStartIndex(0); P'CDV3+
} -]vPF|
c9xc@G!
public PaginationSupport(List items, int ,W&::/2<7
RVe UQ%
totalCount, int startIndex){ [=KA5c<
setPageSize(PAGESIZE); F$&{@hd
setTotalCount(totalCount); =5X(RGK
setItems(items); w}QU;rl8q
setStartIndex(startIndex); -D30(g{O
} NYN(2J
K.2l)aRd
public PaginationSupport(List items, int #Q_
d
x4bj?=+
totalCount, int pageSize, int startIndex){ 7<3eB)S
setPageSize(pageSize); UZRCJ
setTotalCount(totalCount); C{Er%
setItems(items); O'<cEv'B*
setStartIndex(startIndex); g_t1(g*s
} SAw. 6<Wy-
n g?kl|VG
publicList getItems(){ _0]{kB.$_
return items; B[6y2+6$0
} .6nNqGua1
C
Ejf&n
publicvoid setItems(List items){ cv/
this.items = items; k'$UA$2d
} `}9j vR5
h\qM5Qx+Q
publicint getPageSize(){ SPK%
' s
return pageSize; W"L;8u
} d|(@#*{T]
-&\?Q_6
publicvoid setPageSize(int pageSize){ a8!/V@a
this.pageSize = pageSize; N=P+b%%:Z
} F`\7&'I
ZI'Mr:z4
publicint getTotalCount(){ A#B6]j)
return totalCount; 34\:1z+s M
} u|a+:r)*4
<[mvfw
publicvoid setTotalCount(int totalCount){ i=G.{.
if(totalCount > 0){ atO/Tp
this.totalCount = totalCount; !@[@xdV
int count = totalCount / w-.=u3
m"Y|xvIA
pageSize; BJi
if(totalCount % pageSize > 0) 2K1odqO#
count++; K1K3s<y+
indexes = newint[count]; OCVF+D :
for(int i = 0; i < count; i++){ E
_DSf
indexes = pageSize * SecZ5(+=
- &/n[EE
i; ]B"YW_.x2
} 5+[`x']l
}else{ 5U^
this.totalCount = 0; 4 06.6jmv
} _U`_;=(
} 1"Z61gXrz
gM<*(=x'
publicint[] getIndexes(){ aZMMcd
return indexes; J~[A8o
} dkRG4
)~g
:b_R1ZV|
publicvoid setIndexes(int[] indexes){ KvrcO#-sL
this.indexes = indexes; H/Fq'FsQB
} !@x'?+
#D-L>7,jA
publicint getStartIndex(){ qs]7S^yw
return startIndex; $`&uu
} }.UE<>OX
iX{Lc+u3
publicvoid setStartIndex(int startIndex){ _DK%-,Spu
if(totalCount <= 0) W 6m
oFn
this.startIndex = 0; <""
fJ`7
elseif(startIndex >= totalCount) D<2|&xaR
this.startIndex = indexes loLN
~6
L[Dr[
[indexes.length - 1]; Ws;}D}+
elseif(startIndex < 0) J c~{ E
this.startIndex = 0; W1
qE,%cx
else{ ^&W(|R-,J&
this.startIndex = indexes q{W@J0U
)NwIEk>Tf
[startIndex / pageSize]; PfI~`ke
} "Oh(&N:U
} 6^]Y])
9(>l trA
publicint getNextIndex(){ CR-6}T
int nextIndex = getStartIndex() + )PU?`yLTr
$Y!$I.+
pageSize; X=<-rFW
if(nextIndex >= totalCount) oD]riA>jC
return getStartIndex(); 2<*DL6
else ",\,lqV
return nextIndex; "]dNN{Wka
} R~$W
szY=N7\S*
publicint getPreviousIndex(){ :h>d'+\
int previousIndex = getStartIndex() - AiT&:'<UT
6}YWM]c%
pageSize; k:Iz>3O3]
if(previousIndex < 0) s:j"8ZH
return0; TS9=A1J#
else G &'eP
return previousIndex; i>n.r_!E
} LCrE1Q%VP
|=7ouFl
} 8#gS{
+`_I!
Y!VYD_'P
FF"6~
抽象业务类 l^s\^b=W
java代码: sbZ$h
<
$td=h)S^`
[Yx)`e
/** c$)Y$@D
* Created on 2005-7-12 @_tQ:U,v
*/ `.f
{V
package com.javaeye.common.business; (~~*PT-
m@hmu}qz-
import java.io.Serializable; '/^bO# G:
import java.util.List; nR7 usL
JJHr<|K
import org.hibernate.Criteria; qRg^Bp'VD#
import org.hibernate.HibernateException; 289@O-
import org.hibernate.Session; CKShz]1
import org.hibernate.criterion.DetachedCriteria; B!|<<;Da6
import org.hibernate.criterion.Projections; 8Z TN
import 6&pI{
Yx21~:9}
org.springframework.orm.hibernate3.HibernateCallback; ), >jBYMJ
import 3siWq9.
d,fX3
org.springframework.orm.hibernate3.support.HibernateDaoS ;-=Q6Ms8
vc.:du
upport; -2}-;|
lW^bn(_gQ
import com.javaeye.common.util.PaginationSupport; Vy;f 4;I{
&uwj&-u?
public abstract class AbstractManager extends ~f&lQN'1
OI3UC=G
HibernateDaoSupport { L&wJ-}'l
gA)!1V+:
privateboolean cacheQueries = false; _jV(Gv'
G.2ij%Zz
privateString queryCacheRegion; <}~`YU>=v
!`8WNY?K
publicvoid setCacheQueries(boolean #}50oWE
K1rF;7Y6
cacheQueries){ ;=IC.<Q<}
this.cacheQueries = cacheQueries; $d1+ d;Mn
} =VMV^[&>
O j<.3U[C
publicvoid setQueryCacheRegion(String FNpMu3Q
,f`435R
queryCacheRegion){ ]I9Hbw
this.queryCacheRegion = _qg)^M 6
*={`
%
queryCacheRegion; hLyD#XCFA
} 6Q<^,`/T
[AzQP!gi
publicvoid save(finalObject entity){ i{8T 8
getHibernateTemplate().save(entity); r<]Db&k
} M)Iu'
aRBTuLa)fo
publicvoid persist(finalObject entity){ }`g:)gJ
getHibernateTemplate().save(entity); ?{s!.U[T@
} xOCHP|?
OhmKjY/}
publicvoid update(finalObject entity){ % AqUVt9}
getHibernateTemplate().update(entity); @5n!t1(
} x{Y}1+Y4
s hbPy
publicvoid delete(finalObject entity){ Nz`4q%+
getHibernateTemplate().delete(entity); S<"M5e
} *I;,|Jj k
6Z~u2&
publicObject load(finalClass entity, Txkmt$h
^,L vQW4
finalSerializable id){ H"|xG;cf
return getHibernateTemplate().load 82%~WQnS
#s JE{Tb
(entity, id); p[BF4h{E
}
kt8P\/~*i
"(y",!U@
publicObject get(finalClass entity, -TKS`,#
70p1&Y7or
finalSerializable id){ 8X=cGYC#
return getHibernateTemplate().get TRwlUC3hQ
B .p&,K
(entity, id); l6Hu(.Ls;j
} +g_+JLQ
O5HK2Xg,C
publicList findAll(finalClass entity){ V5y8VT=I
return getHibernateTemplate().find("from hC ^|
1iq,Gd-G.
" + entity.getName()); <7HVkAa
} J&4QI( b.
S pxkB!
publicList findByNamedQuery(finalString c$),/0td|
5mB%Xh;bg
namedQuery){ ]>fAV(ix
return getHibernateTemplate YUo{e=m|
7a_pO1MBL
().findByNamedQuery(namedQuery); |;2Y|>=
} $mvcqn;
]]lgCac_U9
publicList findByNamedQuery(finalString query, (4_7ICFI
)3<|<jwcx
finalObject parameter){ EL!V\J`S_
return getHibernateTemplate DA)+)PhY7K
Q3MG+@) S
().findByNamedQuery(query, parameter); D"o}X TH
} y=i_:d0M
?!>B}e&,
publicList findByNamedQuery(finalString query, T'9I&h%\
yX%T-/XJ
finalObject[] parameters){ .<zW(PW
return getHibernateTemplate KK;3<kX
y6.}h9~
().findByNamedQuery(query, parameters); K;jV"R<9
} WF0%zxg ]
CZB!vh0
publicList find(finalString query){ Qs2E>C
return getHibernateTemplate().find FQdz":5
DSG tt/n
(query); ~=h M y`Ml
} CJ B
(_G&S~@.
publicList find(finalString query, finalObject [+0rlmB
Va^Y3/
parameter){ 32!jF}qpD
return getHibernateTemplate().find V@gweci
F"2v5F@
(query, parameter); nR)/k,3W
} 1e`/N+6u
Df;EemCh
public PaginationSupport findPageByCriteria >|%dN
jf@Q
<p"[jC2zF;
(final DetachedCriteria detachedCriteria){ /]H6'
return findPageByCriteria "]M:+mH{]
n%;wQ^
(detachedCriteria, PaginationSupport.PAGESIZE, 0); c$?(zt;
} tins.D
1iWo*+5
public PaginationSupport findPageByCriteria W7I.S5
zfvMH"1
(final DetachedCriteria detachedCriteria, finalint :3`6P:^
C/Vs+aW
n
startIndex){ Q 6djfEN>
return findPageByCriteria OiI[w8
#<ppiu$
(detachedCriteria, PaginationSupport.PAGESIZE, >hqev-
noY~fq/U
startIndex); y<7C!E#b8
} Ay7I_"%
}*.S=M]y$
public PaginationSupport findPageByCriteria e~tgd8a2a
'<N^u@tF7
(final DetachedCriteria detachedCriteria, finalint 4W7
)eFXjnHN
pageSize, #clOpyT*
finalint startIndex){ Jt79M(Hp!
return(PaginationSupport) 9kmEg$WM
0zrgK;9
getHibernateTemplate().execute(new HibernateCallback(){ FEqs4<}E
publicObject doInHibernate *a_U2}N
z%xWP&3%"
(Session session)throws HibernateException { @Qw~z0PE<l
Criteria criteria = ^(<Ecdz(
e~#;ux
detachedCriteria.getExecutableCriteria(session); t']d_Vcza
int totalCount = F?!P7 zW
l ;"v&?
((Integer) criteria.setProjection(Projections.rowCount @<]sW*s
3IXai)6U
()).uniqueResult()).intValue(); k
I{)"
criteria.setProjection l,cnMr^.W
^0A}iJL
(null); 9Q{-4yF9k
List items = p<b//^
&L3OP@;
criteria.setFirstResult(startIndex).setMaxResults BJGL &N
5,/rh,?
(pageSize).list(); N ] KS\
PaginationSupport ps = I'pOB
7.7aHt0
new PaginationSupport(items, totalCount, pageSize, ~>C@n'\lv
VyQ@. Lm
startIndex); H CKD0xx
return ps; ;Du+C%
} ? yL3XB>
}, true); T(LqR?xOo
} !|!k9~v!
t%@sz
public List findAllByCriteria(final a=(D`lQ8
@qP
uYFnw
DetachedCriteria detachedCriteria){ }yQ&[Mt
return(List) getHibernateTemplate P2y`d9,Q
l=EnK"aU
().execute(new HibernateCallback(){ =T_E]>FF9
publicObject doInHibernate XY1D<