Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 )t#v55M
[$bK%W{f
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 UW?(-_8
=Co[pt
据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 q0a8=o"|
s;[OR
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 0K*|B.O
]@rt/ eX
。 }+wvZq +c
<RFT W}f!
分页支持类: zZ11J0UI
^zs]cFN#%
java代码: `Zm-F
F CbU> 1R
HL*Fs /W
package com.javaeye.common.util; /`b(} m
2xx
import java.util.List; q]qKU`m!Q`
{|Pg]#Wi&
publicclass PaginationSupport { \F
}s"#
OlwORtWzZ
publicfinalstaticint PAGESIZE = 30; |sIr}}
2[;4D/`*
privateint pageSize = PAGESIZE; GqT0SP
?8O %k<?
privateList items; *;noZ9{"+
ee+*&CT)
privateint totalCount; g=gWkN
<
-3)]IA
privateint[] indexes = newint[0]; EG|fGkv"
d77->FX2
privateint startIndex = 0; N;A#K7A[@
5,,b>Z<
public PaginationSupport(List items, int !pMp
n%r<]
k ='c*`IE
totalCount){ 2Kg+SLU[~
setPageSize(PAGESIZE); G+$A|'<`z
setTotalCount(totalCount); 13X\PO'9
setItems(items); l^$8;$Rq
setStartIndex(0); d;-/F b{4
} 7 z#Xf
Zc<fopi h
public PaginationSupport(List items, int 0<{zW%w
`]0E)
totalCount, int startIndex){ a1 I"Sh
setPageSize(PAGESIZE); wACx}'+M
setTotalCount(totalCount); M]RbaXZ9
setItems(items); 9t1aR*b&@
setStartIndex(startIndex); E<|p9,M
} vj?6,Ae
B"903g 1
public PaginationSupport(List items, int ]sbj8
l?AWG&
totalCount, int pageSize, int startIndex){ 1$]hyC/f
setPageSize(pageSize); dg?[gD8!4&
setTotalCount(totalCount); N!u(G
setItems(items); iLyJ7zby
setStartIndex(startIndex); wy1xZQ<5
} X4D>
8!T6N2O6d
publicList getItems(){ ]0+5@c
return items; x<S?"
} #:5vN-9?
lg(*:To3B
publicvoid setItems(List items){ .YT&V
this.items = items; 7a4b,-93
} k$u/6lw]IB
"/O`#Do/
publicint getPageSize(){ QQB\$[M!Z
return pageSize; t.7KS:
} Tr}
r`
%
[ ;$(;
publicvoid setPageSize(int pageSize){ 20O\@}2q2M
this.pageSize = pageSize; 'rX!E,59
} ~`<(T)rs
SG)hrd
publicint getTotalCount(){ v`Iw:?)%
return totalCount; wTL&m+xr
} ZE!dg^-L
)Ycjx~
publicvoid setTotalCount(int totalCount){ <yxEGjm
if(totalCount > 0){ =xa:>Vh#
this.totalCount = totalCount; $Eo)i
int count = totalCount / !D_Qat
4]VoIUIuN
pageSize; mo$`a6[h<
if(totalCount % pageSize > 0) |BO!q9633V
count++; ~Lyy7B9
indexes = newint[count]; 905%5\Y
for(int i = 0; i < count; i++){ NJVAvq2E.
indexes = pageSize * SXA`o<Ma
AaVj^iy/X
i; $Ka-ZPy<#
} 7AE)P[
}else{ ~ PO)>;
this.totalCount = 0; <Ag`pZ<s
} N<e=!LV
} '\&t3?;
z^KMYvH
g
publicint[] getIndexes(){ e)Be*J]4
return indexes; 4FWb5b!A=
} u+&t"B
-UHa;WH
publicvoid setIndexes(int[] indexes){ }i"\?M
this.indexes = indexes;
S#kA$yO
} &Ow[
z/B[quSio
publicint getStartIndex(){ aQMUC6cPM@
return startIndex; K!JXsdHK
} .5i\L OTd
J <<Ph
publicvoid setStartIndex(int startIndex){ XtJ_po
if(totalCount <= 0) \fHtk _
this.startIndex = 0; * mzJ)4A
elseif(startIndex >= totalCount) v(=?ge YLo
this.startIndex = indexes KqM!7
?l6NQ;z
[indexes.length - 1]; ^9{mjy0Q
elseif(startIndex < 0) ^F>C|FJ2
this.startIndex = 0; HI`
q!LPv
else{ 3rF=u:r7c
this.startIndex = indexes CSUXa8u7
ypCarvQT
[startIndex / pageSize]; P)>`^wc$
} B.e3IM0
} !`3q9RT3."
XS L*e
publicint getNextIndex(){ 9]{(~=D7
int nextIndex = getStartIndex() + , ;'y <GA
eQiK\iDS
pageSize; IfeCSK,x
if(nextIndex >= totalCount) -v'|#q
return getStartIndex(); G(g.~|=EZ
else yX^/Oc@j
return nextIndex; Rh[%UNl
} _y,?Cj=u|
Nq$Xe~,*
publicint getPreviousIndex(){ q_h=O1W
int previousIndex = getStartIndex() - deRnP$u0
/$q9
Kxb
pageSize; (}]ae*
if(previousIndex < 0) :y>$N(.8f
return0; z1-JoZ
else TqvgCk-
return previousIndex; [>rX/a%c
} x&n gCB@O
pj~Ao+
} +"u6+[E
CJ@G8>
Rxg^vM*
=B+^-2G8
抽象业务类 F%Xj'=
java代码: gc
ce]QS
lg9`Z>?
9S.J%*F7
/** 5IwQ<V
* Created on 2005-7-12 WOv m%sX
*/ {^Y0kvnd
package com.javaeye.common.business; 8Pkw'.r
$KmhG1*s
import java.io.Serializable; Y(qyuS3h~*
import java.util.List; sX8?U,u
ai3wSUYJi
import org.hibernate.Criteria; i9QL}d
import org.hibernate.HibernateException; '@{'T LMCi
import org.hibernate.Session; f
_
O
import org.hibernate.criterion.DetachedCriteria; *0*1.>Vg
import org.hibernate.criterion.Projections; zqDG#}3f^
import STr&"9c
p$qpC$F
org.springframework.orm.hibernate3.HibernateCallback; c{qoASc?
import 'S[&-D%(3
L~WC9xguDl
org.springframework.orm.hibernate3.support.HibernateDaoS \-Oq/g{j
/3(|P
upport; A6 D@#(D
f vAF0
a
import com.javaeye.common.util.PaginationSupport; -0 e&>H%
3I" <\M4x
public abstract class AbstractManager extends yY3Mv/R
D^G5$hi
HibernateDaoSupport { l6[0i
b?=>)':f
privateboolean cacheQueries = false; ~h:/9q
2I8RO\zR
privateString queryCacheRegion; eSC69mfD
p+t79F.js
publicvoid setCacheQueries(boolean R*DQm
3U_,4qf
cacheQueries){ c`F~vrr)X
this.cacheQueries = cacheQueries; 7%%FYHMO:
} "K!9^!4&
ZRK1UpP
publicvoid setQueryCacheRegion(String T%opkyP>=
6v]y\+
queryCacheRegion){ O%$XgEJ8p
this.queryCacheRegion = {<p-/|Z52
uoryxKRjc~
queryCacheRegion; ]]InD N
} 7AOjlC9R}
2I!L+j_
publicvoid save(finalObject entity){ "!fvEE
getHibernateTemplate().save(entity); A#WvN>
} $69ef[b
|?kZfr&9q
publicvoid persist(finalObject entity){ [pc6!qhDG&
getHibernateTemplate().save(entity); W@T_-pTCjK
} hDP&~Mk
M_ GN3
publicvoid update(finalObject entity){ A3!xYG=+
getHibernateTemplate().update(entity); :epjJ1mW
} OLl?1
B?-~f^*,jG
publicvoid delete(finalObject entity){
a2z1/Nh
getHibernateTemplate().delete(entity); 0zL7$Q#c
} SU {U+
B(omD3jzN
publicObject load(finalClass entity, hPM:=@N$
ff1Em.
finalSerializable id){ T VuDK
return getHibernateTemplate().load " %,KZI
K<3$>/|
(entity, id); PCx] >&
} cc$L56q
W,g0n=2V
publicObject get(finalClass entity, HZG<aY="
*1>zE>nlP
finalSerializable id){ Bl
>)G X\l
return getHibernateTemplate().get s--\<v
,o_Ur.UJ
(entity, id); Py3Y*YP
} 0VA$
Ige
uPp9
UW
publicList findAll(finalClass entity){ +pq/:h
return getHibernateTemplate().find("from 2f=7`1RCD
-%h0`hOG{
" + entity.getName()); 60A
E~
} UP*\p79oO
nj@l5[
publicList findByNamedQuery(finalString +dt b~M
!OO{qw(*g
namedQuery){ (ohza<X;6
return getHibernateTemplate <]/z45?
3 E~d
().findByNamedQuery(namedQuery); 3XOf-v:~
} 4Y=sTXbFt
y*AB=d^
publicList findByNamedQuery(finalString query, 2u>
[[U1:
R>3a?.X
finalObject parameter){ "]"!"#aMv
return getHibernateTemplate !GNLq.rQ
neHozmm|
().findByNamedQuery(query, parameter); ub#>kCL9
} l5 FM>q
Je5UVf3>2&
publicList findByNamedQuery(finalString query, \Jcj4
X5M{No>z
finalObject[] parameters){ v+3-o/G7
return getHibernateTemplate LMV0:\>
y'a(>s(
().findByNamedQuery(query, parameters); K?4/x4p@
} Pdg %:aY
+Yuy%VT
publicList find(finalString query){ /j{`hi
return getHibernateTemplate().find 0UHX Li47Y
B;r o(R
(query); $?dAO}f3O)
} 5:=ECtKi
SiM1Go}#
publicList find(finalString query, finalObject @_O,0d
g
XyS|7#o
parameter){ _QhB0/C
return getHibernateTemplate().find xEA%UFB.!G
]{[8$|Mg
(query, parameter); ?^# h|aUp.
} (IrX\Y
e>ZF? (a0
public PaginationSupport findPageByCriteria h,D6MP
E2PMcT{)_
(final DetachedCriteria detachedCriteria){ rQ4i %.
return findPageByCriteria y[}O(
pO~VI$7
(detachedCriteria, PaginationSupport.PAGESIZE, 0); ^aW?0qsH
} _>/T<Db
NW$C1(oT
public PaginationSupport findPageByCriteria ice7J2r_
&|:T+LVv$+
(final DetachedCriteria detachedCriteria, finalint P p}N-me>_
Z1(-FT6O
startIndex){ T@GR Tg
return findPageByCriteria ()E:gqQ
Ul<'@A8
(detachedCriteria, PaginationSupport.PAGESIZE, lu GEBPi
)<6zbG
startIndex); lO+<T[
} "/EE$eU
*L%i-Wg"
public PaginationSupport findPageByCriteria B>^5h?(lt
+18)e;
(final DetachedCriteria detachedCriteria, finalint Y'.WO[dgf
K{
s=k/h
pageSize, yxECK&&P0#
finalint startIndex){ ) OqQz7'
return(PaginationSupport) -*?Y4}mK
I)$of9
getHibernateTemplate().execute(new HibernateCallback(){ )P{I<TBI;
publicObject doInHibernate 5>XrNc91
&zCqF=/9U
(Session session)throws HibernateException { A/ eZ!"Y
Criteria criteria = HzO6hb{jJO
YzcuS/~x
detachedCriteria.getExecutableCriteria(session); AX|-Gv
int totalCount = R|Oy/RGY$
5 i1T?
((Integer) criteria.setProjection(Projections.rowCount !~'\Ey
Kb_R "b3v
()).uniqueResult()).intValue(); V/0?0VKG
criteria.setProjection IH$R XGL
Y:nF.An3
(null); =jik33QV<
List items = q4k)E
]~,V(K
criteria.setFirstResult(startIndex).setMaxResults mErXdb|L
"EoC7
1
(pageSize).list(); 62BJ;/ ]
PaginationSupport ps = :'OCQ.[{s
gyW*-:C
new PaginationSupport(items, totalCount, pageSize, @17hB h
q2I;Ly\3o
startIndex); )P^5L<q>|
return ps; (8!#<$
} iL-I#"qT,
}, true); lR!Sdd} -
} \ B~9Ue!
CfMq?.4%E}
public List findAllByCriteria(final &FWPb#
_v=@MOI/J
DetachedCriteria detachedCriteria){ ]Q\Ogfjp
return(List) getHibernateTemplate D_6GzgZ
:x*8*@kC
().execute(new HibernateCallback(){ Co2* -[R
publicObject doInHibernate Yx_[vLm
AgsMk
(Session session)throws HibernateException { wHW";3w2~
Criteria criteria = Lw=.LN
PmtBu`OkV
detachedCriteria.getExecutableCriteria(session); _tfZg /+)
return criteria.list(); Fj9/@pe1
} @<]xbWhuw
}, true); `Z{kJMS
} r)|X?
&jg