Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 sx IvL7jl
B*p`e1
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 \:9dt8(-U
0m7ANqE[Z
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 wv>*g:El'
zD:"O4ZM^^
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 1r;]==
k'E3{8<!
。 0B#9CxU%
Y
m=ihQ|
分页支持类: O|=5+X
oa$-o/DhB
java代码: {m~.'DU
|1wfLJ4--l
je@F:5
package com.javaeye.common.util; B :#5U85m
W~(@*H
import java.util.List; "{1`~pDj?
8TGO6oY+=
publicclass PaginationSupport { A Vf'"~?
'g.9
goQ
publicfinalstaticint PAGESIZE = 30; . > [d:0
g*?)o!_*
privateint pageSize = PAGESIZE; ["Mq
B,@geJ
privateList items; Dn~r~aR$g
6x|"1
G{
privateint totalCount; '8\7(0$c
V/5.37FSb
privateint[] indexes = newint[0]; CZ"~N`
P1KXvc}JGe
privateint startIndex = 0; X- 2 rC
a,g3/
public PaginationSupport(List items, int u U Xj
3fPd|F.kF
totalCount){ jN
9|q
setPageSize(PAGESIZE); "&;8U.
setTotalCount(totalCount); n " ?It
setItems(items); FeOo;|a
setStartIndex(0);
uyBmGS2
} IlQNo 1
ATx6YP@7~
public PaginationSupport(List items, int j06?Mm_c2
e59P6/z
totalCount, int startIndex){ 6Y?%G>$6
setPageSize(PAGESIZE); ]Hr:|2|.
setTotalCount(totalCount); gq9IJ
setItems(items); n${,r
setStartIndex(startIndex); -5;Kyio
} !lxs1!:
8>^(-ca_
public PaginationSupport(List items, int C><]o
.,Qj3
totalCount, int pageSize, int startIndex){ eS)2#=
setPageSize(pageSize); uG<VQ2LM
setTotalCount(totalCount); W *?mc2;/
setItems(items); CR8a)X4j#
setStartIndex(startIndex); Z3jh-{ 0
} }*eiG
|m{Q_zAB
publicList getItems(){ 8 Z|c!QIU
return items; qYpuo
D
} M]9oSi
I#lvaoeN
publicvoid setItems(List items){ :lf;CT6$
this.items = items; OSP#FjH
} ~DY5`jV
d'j8P
publicint getPageSize(){ @;>i3?
return pageSize; :eIPPh|\
} &XG k
kkWqP20q
publicvoid setPageSize(int pageSize){ 1K(a=o[Ce
this.pageSize = pageSize; S}fU2Wi
} QY14N{]T\p
"s-e)svB
publicint getTotalCount(){ <3?T^/8
return totalCount; Ce&nMgd~
} _<Hx1l~
%1f, 8BM
publicvoid setTotalCount(int totalCount){ W5'07N^
if(totalCount > 0){ b _Q:v&
this.totalCount = totalCount; C\.mv |aW~
int count = totalCount / n =SY66
-^A=U7
pageSize; _`RzPIS^
if(totalCount % pageSize > 0) %Xm3m0nsv{
count++; VrG4wLpLs
indexes = newint[count]; \=n0@1Q=>
for(int i = 0; i < count; i++){ O<}^`4d
indexes = pageSize * /WIO@c
gkxEy5c[
i; s=)0y$
} do3 BI4Q
}else{ #$\cRLPg
this.totalCount = 0; ;=rM Ii
} [>`[1;a X
} #Bo/1G=
lo }[o0X
publicint[] getIndexes(){ @3D8TPH
return indexes; %y@iA91K
} @\~qXz{6J
44s
K2
publicvoid setIndexes(int[] indexes){ ]J=S\
this.indexes = indexes; C):RE<X
} eFO+@
n])-+[F
publicint getStartIndex(){ M~&|-Hm
return startIndex; i?7%z`
} {HgW9N(
re.%$D@
publicvoid setStartIndex(int startIndex){ ]U :1NC"
if(totalCount <= 0) p(2j7W-/
this.startIndex = 0; ,H{
/@|RW
elseif(startIndex >= totalCount) K?l1Gj
this.startIndex = indexes Effp^7 3
F~Kd5-I@
[indexes.length - 1]; mtfyhFk
elseif(startIndex < 0) *q5'~)W<
this.startIndex = 0; ]mU,y$IQ
else{ 0 O{Y
Vk`
this.startIndex = indexes !;Mh5*-
?nm:e.S+?
[startIndex / pageSize]; !U02>X
} KR
} Kd_WN;l
)G(6=l*
publicint getNextIndex(){ ^V^In-[!y:
int nextIndex = getStartIndex() + #=WDJT:
pv;c<NQ'1
pageSize; gto@o\&=
if(nextIndex >= totalCount) S}"?#=Q.%O
return getStartIndex(); niO(>
else T;- Zl[H
return nextIndex; "Y&+J@]
} vPG!S{4
b0a'Y"oef4
publicint getPreviousIndex(){ >K`.!!av,Y
int previousIndex = getStartIndex() - '-jKv=D+
D\Y)E#%,
pageSize; !$q1m@K1
if(previousIndex < 0) ?Y"bt^4j
return0; d}f| HOFq
else ~A8%[.({5
return previousIndex; `Tzqvnn
} 5H6GZ:hp
l3aG#4jj
} -;$+`<%
UQ|zSalv,
F"a^`E&
b("JgE`
抽象业务类 YYI
java代码: $Z;HE/3
oeXNb4; 4
>J=x";,D|~
/** (PYUfiOf
* Created on 2005-7-12 LvpHR#K)F5
*/ T0_9:I`&
package com.javaeye.common.business; .}fc*2.'
MCma3^/1
import java.io.Serializable; @C=, >+D
import java.util.List; h3;Ij '
PMZdz>>T
import org.hibernate.Criteria; VGcl)fIqw?
import org.hibernate.HibernateException; Q}jbk9gM5
import org.hibernate.Session; f}4c#x
import org.hibernate.criterion.DetachedCriteria; ,8uu,,c
import org.hibernate.criterion.Projections; ;U<)$5
import f5a%/1?
0:G@a&Lr
org.springframework.orm.hibernate3.HibernateCallback; 81a&99k#
import k;3P;@3,W
~QdwoeaD
org.springframework.orm.hibernate3.support.HibernateDaoS hE:P'O1
!W:QLOe6F
upport; Rn{q/h
2h&pm
import com.javaeye.common.util.PaginationSupport; rOY^w9!
<YL\E v/[
public abstract class AbstractManager extends OxF\Hm)(
pb%#`2"
HibernateDaoSupport { 3Gn2@`GC
9BANCW"
privateboolean cacheQueries = false; lGB7(
X_
>B7(k
privateString queryCacheRegion; >/n5=RWh
V`69%35*@
publicvoid setCacheQueries(boolean >1ZMQgCG
^F?H)[0
cacheQueries){ _0F6mg n
this.cacheQueries = cacheQueries; iy
tSC
} MbnV5 b:X
zi>f436-
publicvoid setQueryCacheRegion(String 62EJ# q[
[ur/`
queryCacheRegion){ E08AZOY&g
this.queryCacheRegion = B4R,[WE"
j~DoMP5Ls
queryCacheRegion; pq5)Ug
} e;3$7$n Pv
!xo@i XL
publicvoid save(finalObject entity){ \)BKuIP
getHibernateTemplate().save(entity); aic6,>\!'
} {>FA ~}cX.
&P3B
publicvoid persist(finalObject entity){ 0'97af
getHibernateTemplate().save(entity); =< CH( 4!
} D~f.)kkC4
.M>u:,v
publicvoid update(finalObject entity){ RAE|eTnna
getHibernateTemplate().update(entity); QHs=Zh;"
} ciC4V^f
oU~V0{7g
publicvoid delete(finalObject entity){ {OAy@6
+
getHibernateTemplate().delete(entity); \yG_wZs
} =As'vt
0
nBiSc*
publicObject load(finalClass entity, U}A+jJ
6C]!>i}U
finalSerializable id){ ZQBo|8*
return getHibernateTemplate().load uaDU+ywL
6l_8Q w*5I
(entity, id);
l3g6y9;
} Zt!l3(*tt
dN*<dz+4r
publicObject get(finalClass entity, +}+hTY$a
V$v;lvt^Uq
finalSerializable id){ T)C
return getHibernateTemplate().get Fah}#,
5 #kvb$97
(entity, id); !d(!1fC
} g<.8iW 'c
|e< U %v
publicList findAll(finalClass entity){ D[-Ct
return getHibernateTemplate().find("from +H<%)Lk J
T!a8c<'V
" + entity.getName()); +^69>L2V
} VGvOwd)E
G,"$Erx
publicList findByNamedQuery(finalString 4|+
|L_
w@:o:yLS
namedQuery){ )d.7xY7!
return getHibernateTemplate -x_iqrB
>8AtT=}w
().findByNamedQuery(namedQuery); Z#J{tXZc
} 'xi..
'6WDs]\
publicList findByNamedQuery(finalString query, Ck^= H
1$Hf`h2
finalObject parameter){ (u'/tNGS
return getHibernateTemplate wUV%NZB
LB{a&I LG
().findByNamedQuery(query, parameter); 8 Zj>|u
} rRt<kTk!U
^#t<ILUa
publicList findByNamedQuery(finalString query, cEQa 6
[c W
finalObject[] parameters){ {
o;0Fx
return getHibernateTemplate ih;TQ!c+b
x)U;
().findByNamedQuery(query, parameters); (CV=0{]
} ~Igo
8ykl
RI*%\~6t?
publicList find(finalString query){ L"-&B$B:
return getHibernateTemplate().find C4cg,>P7
PQ(%5c1e
(query); *|3z($*U]
} 6?iP z?5
-'VT
publicList find(finalString query, finalObject :|A db\b
VN".NEL
parameter){ ^}[
N4
return getHibernateTemplate().find jXDo!a|4y
{vH8X(m
(query, parameter); $ta#]>{
} p}!pT/KmpH
V9bLm,DtT
public PaginationSupport findPageByCriteria }wb;ulN)
1`AE]
(final DetachedCriteria detachedCriteria){ |V7a26h
return findPageByCriteria (1HN, iJy
0zxeA+U
(detachedCriteria, PaginationSupport.PAGESIZE, 0); N|)V/no 6
} 1lQ10J
b>(lF%M
public PaginationSupport findPageByCriteria >k#aB.6
{2Ibd i
(final DetachedCriteria detachedCriteria, finalint +=8Po'E^!d
x}[` -
startIndex){ 6qDD_:F
return findPageByCriteria bDNd
m-
)gLasR.1
(detachedCriteria, PaginationSupport.PAGESIZE, c8s/`esA
od fu7P_
startIndex); NEH$&%OV?
} j%h
Y0
.0ZvCv:>
public PaginationSupport findPageByCriteria =>J#_Pprn
tSYnc7
(final DetachedCriteria detachedCriteria, finalint ]mh+4k?b
]>,|v,i
=
pageSize, s#fmGe"8
finalint startIndex){ 9|m L
return(PaginationSupport) iau&k`b`
R}Y=!qjYE=
getHibernateTemplate().execute(new HibernateCallback(){ :F\f}G3
publicObject doInHibernate %G&v@R
<coCu0
(Session session)throws HibernateException { jdp:G
Criteria criteria = w6Q]?p+
)1,&YJM*6l
detachedCriteria.getExecutableCriteria(session); cOgtBEhn
int totalCount = iy"Kg]
]*h}sn=
((Integer) criteria.setProjection(Projections.rowCount ATHz~a
463dLEd
()).uniqueResult()).intValue(); @$R a
criteria.setProjection *)1z-rH`
J#]yKgT
(null); 4\3t5n
List items = jayoARUB
2Qj)@&zKe#
criteria.setFirstResult(startIndex).setMaxResults \#r_H9&s6
`ahXn
(pageSize).list(); R 2s>;V.:
PaginationSupport ps = t_dg$KB
9="sx 8?
new PaginationSupport(items, totalCount, pageSize, 6KG 63`aQ
$C/Gn~k 5
startIndex); y|se^dn
return ps; Hdx|k=-Q^
} (ce NVo&
}, true); zJ`(LnV
} xW4+)F5P(
A'8K^,<