Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 (uskVK>L
:I^I=A%Pe(
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 @b"J FB|
%oqC5O6
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 6$*ZH*
v6`TbIq%
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 #&ZwQw
2';f8JLY
。 .@(9v.:_u
W=@]YI
分页支持类: <hSrx7o
b6A]/290x
java代码: *&lNzz5&
%vFoTu)2
i$!-mYi+Q!
package com.javaeye.common.util; kA%"-$3
CP!>V:w%9!
import java.util.List; $d_%7 xx
{P@OV1
publicclass PaginationSupport { COk;z.Kn
1Ydym2
publicfinalstaticint PAGESIZE = 30; maR5hgWCHe
([a[fi
privateint pageSize = PAGESIZE; f|X./J4Bl
?oO<PR}y
privateList items; n; fUwon
9>na3ISh
privateint totalCount; +Pm
yFJH
\5s#9
privateint[] indexes = newint[0]; KZ;Q7 1
]K(>r#'nH
privateint startIndex = 0; *Af:^>mh
[exIK
public PaginationSupport(List items, int TwZASn]o
Z:(yX0U,[
totalCount){ m}dO\;
setPageSize(PAGESIZE); !R.*Vn[
setTotalCount(totalCount); V"{+cPBO)
setItems(items); uNSbAw3
setStartIndex(0); dJ}E,rW}
} $Q cr
B1!b@0^
public PaginationSupport(List items, int 0kdPr:B Q0
Z U^dLN-N
totalCount, int startIndex){ KixS)sG
setPageSize(PAGESIZE); r|>a;nY
setTotalCount(totalCount); ) ]x/3J@
setItems(items); nR1QS_@{L
setStartIndex(startIndex); Dtw1q-
} >uN)O-
rG*Zp7{
public PaginationSupport(List items, int Y}pCBw
Q(\U'|%J
totalCount, int pageSize, int startIndex){ 8NRc+@f|m
setPageSize(pageSize); <p74U( V
setTotalCount(totalCount); z]Dbca1a`
setItems(items); }+fMYgw
setStartIndex(startIndex); R|Lr@k{6+r
} 05cyWg9a
- s,M+Q(<
publicList getItems(){ U 3f a*D
return items; G$B( AWL
} ]%y3*N@AZ
6cV -iDOH
publicvoid setItems(List items){ DcQ[zdEz+
this.items = items; 6eNo}Tos9
} "=S< xT+
=
UT^5cl(
publicint getPageSize(){ (ugB3o
return pageSize; C\B&'+uR
} LK1 r@
VdZmrq;?/
publicvoid setPageSize(int pageSize){ 8>
-3G
this.pageSize = pageSize; o"a~
} [o0Z;}fU
y,D4b6
publicint getTotalCount(){ 6:v$g
return totalCount; i,Q{Z@,
} ymxYE#q
m.}Yn,
publicvoid setTotalCount(int totalCount){ 5g{F-
if(totalCount > 0){ :bhpYEUMx
this.totalCount = totalCount; ^K#PcPF-j
int count = totalCount / c3>#.NP_
+v`?j+6z
pageSize; F( w
if(totalCount % pageSize > 0) Wx<fD()
count++; w,t>M_(N
indexes = newint[count]; =&J7
'nDP
for(int i = 0; i < count; i++){ >+ZG{'!j
indexes = pageSize * JToc("V
&GC`4!H
i; dvAvG.;U
} 2$g3ABfV
}else{ i8\&J.
this.totalCount = 0; KfO$bmwmx
} 8d90B9
} ?5A!/`E&%
,&1DKx
publicint[] getIndexes(){ d&dp#)._8
return indexes; &3Q!'pJJ
} Z*}5M4
rl0sN5n
publicvoid setIndexes(int[] indexes){ ~e,D`Lv
this.indexes = indexes; i9qn_/<c
} =-r[ s%t&
yH'vhtop
publicint getStartIndex(){ *h`%u8/{
return startIndex; X5| <qu
} @C]Q;>^|
QeK@++EVc
publicvoid setStartIndex(int startIndex){ 1q])"l"<
if(totalCount <= 0) <F=U(WWn9
this.startIndex = 0; 0jlwL
elseif(startIndex >= totalCount) hpxqL%r
this.startIndex = indexes aP%2CP~_ P
rHir>
p
[indexes.length - 1]; | Vtd!9
elseif(startIndex < 0) m@r+M"!R
this.startIndex = 0; D ]H@Sx
else{ ^=H. .pr
this.startIndex = indexes W3XVr&
aIrQ=}
[startIndex / pageSize]; vgc#IEx@
} B>hC8^.S|w
} F
;o ^.
z"b}V01F#
publicint getNextIndex(){ oA^aT:o +
int nextIndex = getStartIndex() + SIBNU3;DL
bOt6q/f
pageSize; dPdodjSu,!
if(nextIndex >= totalCount) GWNLET
return getStartIndex(); { *"I4
else jIq@@8 @o
return nextIndex; ^ di[J^
} zHI_U\"8D
t8Sblgq
publicint getPreviousIndex(){ om`x"x&6
int previousIndex = getStartIndex() - Ag3[Nu1
JMMT886
pageSize; U4J9bp|
if(previousIndex < 0) |mSF a8G@
return0; -'j_JJ
else q K sI}X~
return previousIndex; \GL!x 7s1A
} ;b(*Bh<
l(EDe
} vo9DmW
%_rdO(
3fS+,>s\O
gEVN;G'B<=
抽象业务类 b
h%@Lo
java代码: U>b mCK2
)575JY `6K
i?.7o*w8
/** i`]-rM%J#
* Created on 2005-7-12 y;)j
*/ wUGSM"~
|
package com.javaeye.common.business; W6_~.m"b
0Q81$% @<
import java.io.Serializable; XYJ7k7zc+Y
import java.util.List; u!=9.3
C%$:Oq
import org.hibernate.Criteria; 7oPLO(0L
import org.hibernate.HibernateException; Y#>'.$(Az
import org.hibernate.Session; C@{#OOa
import org.hibernate.criterion.DetachedCriteria; wABaNB=9;
import org.hibernate.criterion.Projections; hL1q9%
import cs]N%M^s
LL|uMe"Jb
org.springframework.orm.hibernate3.HibernateCallback; DrfOz#a0Uu
import w4m-DR5
'W!N1W@
org.springframework.orm.hibernate3.support.HibernateDaoS 8oM]gW;J~
?-40bb
upport; b51{sL
V Ae@P
import com.javaeye.common.util.PaginationSupport; q
.[hwm
%^e~;i=2
public abstract class AbstractManager extends s*"Yi~
O~E6"vQ
HibernateDaoSupport { [D8u.8q
Q}pnb3J>T
privateboolean cacheQueries = false; V'kCd4
^hG
Y,\K9
privateString queryCacheRegion; _0~WT
"|{3V:e>a
publicvoid setCacheQueries(boolean <r6e23
qb^jcy
cacheQueries){ ]g#ur@Y%
this.cacheQueries = cacheQueries; |'w_5?|4
} K4]42#
Rgb1B3gu
publicvoid setQueryCacheRegion(String PNm WZW*
>EVlMt27'
queryCacheRegion){ H3$~S '
this.queryCacheRegion = (AHZmi
V
]2^tV.^S^
queryCacheRegion; e,Ih7-=Er,
} + 9vd(c
XCQS_'D
publicvoid save(finalObject entity){ 0*G5Vd
getHibernateTemplate().save(entity); !1i(6 ?~#4
} 9.<d S
c$X0C&m
publicvoid persist(finalObject entity){ BXNt@%
getHibernateTemplate().save(entity); >d.o1<
} / v";u)
Y,-?oBY
publicvoid update(finalObject entity){ Kd2?9gaw
getHibernateTemplate().update(entity); \,:3bY_d
} ^%)H;
oSmv
(O
publicvoid delete(finalObject entity){ tc go
'V
getHibernateTemplate().delete(entity); $U,`M"
} 8vzjPWu
Dj=OUo[[d
publicObject load(finalClass entity, 2h<{~;
.rfufx9Sw
finalSerializable id){ {fkW0VB;
return getHibernateTemplate().load K\Oz
~,z
-7GF2
@
(entity, id); 6kW <i,A
-
} 1-_op!N
ZTCzD8
publicObject get(finalClass entity, JNQiCK,)}M
z^+`S:
finalSerializable id){ \(y6o}aW
return getHibernateTemplate().get #+mt}w/
,@+7(W
(entity, id); MQL1 />j;
} ,2Y PD4
fz%I'+!
publicList findAll(finalClass entity){ f tVA
return getHibernateTemplate().find("from %bM^/7
rlj @'
" + entity.getName()); ;]ojfR=?%
} "=cWcztiP
r 5!ie!5gE
publicList findByNamedQuery(finalString
Vf:w.G A
\Y)pm9!
namedQuery){ oY!nM%z/
return getHibernateTemplate 44H#8kV
@Y/PvS8!
().findByNamedQuery(namedQuery); ]LF Y2w<
} Z]$RO
[emUyF
publicList findByNamedQuery(finalString query, X~/hv_@
EJ$-
finalObject parameter){ =bJj;bc'5
return getHibernateTemplate #;Yn8'a~
u{0'"jVJ
().findByNamedQuery(query, parameter); hkzyI~7
} [ vU$zZ<
%
K$om|]p
publicList findByNamedQuery(finalString query, g8 (zvG;Y
|_&Tu#er3
finalObject[] parameters){ L2s)B
return getHibernateTemplate }}a<!L,{
@\[UZVmBw
().findByNamedQuery(query, parameters); VGbuEC [Y
} _Je k;N
#qk}e4u
publicList find(finalString query){ .@0 i,7S
return getHibernateTemplate().find DKV^c'
$gi{)'z
(query); v#iKa+tx
} >|<8QomD
9>qc 1z
publicList find(finalString query, finalObject */gm! :Ym
az7<@vSXi
parameter){ /0(2PVf
y
return getHibernateTemplate().find GO@pwq<
l~.}#$P]
(query, parameter); x`'2oz=,F4
} pWo`iM& F
5t6!K?}
public PaginationSupport findPageByCriteria 3L24|-GxH
&5&C
(final DetachedCriteria detachedCriteria){ )^+v*=Dc-i
return findPageByCriteria yVe<[!hJ
ebk{p<
(detachedCriteria, PaginationSupport.PAGESIZE, 0); ny:c&XS
} Lp\89tB>
".&x`C
public PaginationSupport findPageByCriteria vkE[Ur>
3z Jbb3e
(final DetachedCriteria detachedCriteria, finalint g%z?O[CN
r>+Hwj0>
startIndex){ O=os ,'"
return findPageByCriteria kc&