Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 0xM\+R~,
.5zqpm
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 V1j5jjck
qJN2\e2~f
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 /r Hd9^Y
Hb;#aXHSd
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 *.J)7~(P
jdGoPa\
。 IOsitMOX:
4`
gAluJ#
分页支持类: [huS"1
1/YWDxo,
java代码: bi bjFg
vo[Zuv?<h
^MGgFS]G
package com.javaeye.common.util; {(#>%f+|C
gI
qYIt
import java.util.List; <o";?^0Q
^{GnEqml&
publicclass PaginationSupport { c?{&=,u2
z5v)~+"1
publicfinalstaticint PAGESIZE = 30; 7N/v
a8Jn.!
privateint pageSize = PAGESIZE; IR,`-
>?q()>l
privateList items; kmm1b (
k!K}<sX2
privateint totalCount; shOQ/
d3#
>\QCD9
privateint[] indexes = newint[0]; hSq3LoHV
mpBSd+;Z
privateint startIndex = 0; `2y2Bk
! 3O#'CV
public PaginationSupport(List items, int !52]'yub
eEkFZx
totalCount){ EC2KK)=n}
setPageSize(PAGESIZE); sHSZIkB-r
setTotalCount(totalCount); 'dp3>4
setItems(items); vl<W`)'
setStartIndex(0); POQRq%w
} wvum7K{tI
)Ab!R:4
public PaginationSupport(List items, int F{a- -
k1HukGa
totalCount, int startIndex){ W|o LS
setPageSize(PAGESIZE); (7G5y7wI"
setTotalCount(totalCount); #=@(
m.k:s
setItems(items); C&b^TLe
setStartIndex(startIndex); W~J@v@..4
} ]VY}VALZ
Tp&03
public PaginationSupport(List items, int E4aCL#}D
oX@0+*"
totalCount, int pageSize, int startIndex){ QXnL(z
setPageSize(pageSize); #`rvL6W q}
setTotalCount(totalCount); EM+#h'%-
setItems(items); wIIxs_2Q0c
setStartIndex(startIndex); C d)j%
} G%w hOIFRq
)pV5l|`
publicList getItems(){ "If]qX(w
return items; gN|[n.W4
} A"8`5qa
9pD=E>4?#
publicvoid setItems(List items){ uI^E9r/hB
this.items = items; Bkvh]k;F8
} qh!2dj
&y/
publicint getPageSize(){ lV/-jkR
return pageSize; GU\}}j]
} #y }{ 'rF?
FOxMt;|M
publicvoid setPageSize(int pageSize){ sHx>UvN6
this.pageSize = pageSize; RfVVAaI
} )54;YK
y| *X
publicint getTotalCount(){ =^m,|j|d>4
return totalCount; !%<bLD8
} ;ZMm6o
\*Roa&<!
publicvoid setTotalCount(int totalCount){ gz-X4A"
if(totalCount > 0){ V)CS,w
this.totalCount = totalCount; SR@yG:~
int count = totalCount / n$n)!XL/
!sA[A>
pageSize; XS5*=hv:
if(totalCount % pageSize > 0) G:NI+E"]
count++; 7yGc@kJ?
indexes = newint[count]; m?I$XAE
for(int i = 0; i < count; i++){ i#o:V/Z.
indexes = pageSize * u/3[6MIp
iO)FZ%?"
i; s*<\mwB
} 8C1 ' g7A<
}else{ RM8p[lfX
this.totalCount = 0; 'xi[- -
} j3`#v3
} G j^J pG
eHUr!zH:
publicint[] getIndexes(){ \^O#)&5 V
return indexes; ]]~tFdh
} 9Ml^\|
E_-3G<rt
publicvoid setIndexes(int[] indexes){ >h+[#3vD
this.indexes = indexes; K]4XD1n7
} @C]]VE
1oq5|2p
publicint getStartIndex(){ Gzxq] Mg
return startIndex; jU\vg;nr
} x_&=IyU0j
+cS%b}O`$
publicvoid setStartIndex(int startIndex){ Uf#.b2]
if(totalCount <= 0) UV}\#86!
this.startIndex = 0; UX3
]cr
elseif(startIndex >= totalCount) /,v>w,
this.startIndex = indexes wg<UCmfu!
%$K2$dq5
[indexes.length - 1]; V7}5Zw1
elseif(startIndex < 0) 34ij5bko_)
this.startIndex = 0; 3T)GUzt`
else{ +L(0R&C
this.startIndex = indexes i;4|UeUl
nX,2jT;@L
[startIndex / pageSize]; Q@B--Omfh
} 9aYDi)
} :<$B o
y{CyjYpz^
publicint getNextIndex(){ _&!%yW@
int nextIndex = getStartIndex() + vK\n4mE[,
~Pq(Ta
pageSize; d~B]s
if(nextIndex >= totalCount) DA'A-C2
return getStartIndex(); \LX!n!@
else ;Ml??B]C
return nextIndex; M{ #
} LgN\%5f-
{k.Dy92
publicint getPreviousIndex(){ L'XX++2
int previousIndex = getStartIndex() - nO{@p_3mi
:2#8\7IU^'
pageSize; MRzrZZ%LQ
if(previousIndex < 0) Q"UWh~
return0; ^6*LuXPv
else HZ$q`e
return previousIndex; ;4DqtR"7Y
} 6- H81y3
|BrD:+
} oNV5su
V_Owi5h
Z]-C,8MM
pAwmQS\W
抽象业务类 #$trC)? ~q
java代码: o(iv=(o
moO=TGG;F
ZZ 1s}TG
/** -&87nR(eW
* Created on 2005-7-12 @o&.]FZs
*/ Gt{'` P,&9
package com.javaeye.common.business; xi5/Wc6
WU oGIT'
import java.io.Serializable; /9/svPc]
import java.util.List; \Kh@P*7
\@]/ks=K
import org.hibernate.Criteria; qkX}pQkG)h
import org.hibernate.HibernateException;
DtBIDU]
import org.hibernate.Session; }q0lbwYlb
import org.hibernate.criterion.DetachedCriteria; utk'joo
import org.hibernate.criterion.Projections; &mebpEHUG7
import 2q2;Uo`"S.
Al?LO;$Pa?
org.springframework.orm.hibernate3.HibernateCallback; 1S!<D)n
import hR;J#w
Mv9q-SIc[
org.springframework.orm.hibernate3.support.HibernateDaoS ]KX _a1e
I{Pny/d`
upport; mG,%f"b0
&=SP"@D
import com.javaeye.common.util.PaginationSupport; bJ8~/d]+
DwTqj=l
public abstract class AbstractManager extends v@OyB7}
lNV%R(
HibernateDaoSupport { BaSNr6
YW
I W_:nm6
privateboolean cacheQueries = false; b"Ep?=*5
~r~~0|=
privateString queryCacheRegion; )IIQ{SwQq
>patv
publicvoid setCacheQueries(boolean k:(i sKIA
&&