Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 V{A_\
hQWo ]WF(J
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Mz59ac
azK7kM~
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 ?nf !sJ'm
=6.4
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 JxP&znng
dG8_3T}i
。 ww? AGd
,J*C'#sW
分页支持类: l&
A8P
e]9Z]a2
java代码: P/!W']OO
"O}u2B b
qV$\E=%fhM
package com.javaeye.common.util; [SKN}:D
`;~A
import java.util.List; QsemN7B"<
{>v5~G
publicclass PaginationSupport { gT-"=AsxZQ
\iP=V3
publicfinalstaticint PAGESIZE = 30; s(.H"_a
rp&XzMwC4
privateint pageSize = PAGESIZE; +nAbcBJAl
* :kMv;9
privateList items; i! <1&{
!VDNqW
privateint totalCount; -P6Z[V%
n g,&;E
privateint[] indexes = newint[0]; |KMwK
png
k_?Z6RE>
privateint startIndex = 0; 1
ORA6
@S<6#zR
public PaginationSupport(List items, int uh<e-;vU
[d?tf
totalCount){ ;T\+TZ tI
setPageSize(PAGESIZE); dZWO6k9[H
setTotalCount(totalCount); saa3BuV 6
setItems(items); 5:yRFzhqd
setStartIndex(0); #c%FpR4
} %lK/2-
f1$'av
public PaginationSupport(List items, int <9 dfbI)
[4 v1
N
totalCount, int startIndex){ yM2}JsC
setPageSize(PAGESIZE); w}qLI4
setTotalCount(totalCount); _LSp \{Z
setItems(items); 1w!O&kn
setStartIndex(startIndex); jct|}U
} agGgj>DDd
8=MNzcA }
public PaginationSupport(List items, int |Vo{ {)
VPr`[XPXb
totalCount, int pageSize, int startIndex){ |!q,J
setPageSize(pageSize); elGwS\sw
setTotalCount(totalCount); -=WQed}
setItems(items); >bFrJz}
setStartIndex(startIndex); kXroFLrY
} (V x2*Aw]
OLZs}N+ ;]
publicList getItems(){ Gk']Ma2J}
return items; G' '9eV$
} 8l l}"
q o6~)Aws
publicvoid setItems(List items){ =E
w<s5C@
this.items = items; Qv
WvS9]
} ";U#aK1p
8-"D.b4
publicint getPageSize(){ ]~:WGo=_
return pageSize; a@S{A5j
} 2,6~;R
0N87G}Xu
publicvoid setPageSize(int pageSize){ yvWM]A
this.pageSize = pageSize; 9RPZj>ezjA
} ;(-Wc9=
Ge`PVwn
publicint getTotalCount(){ c6T[2Ig
return totalCount; LzQOzl@z
} 5AK@e|G$w
o1Krp '*
publicvoid setTotalCount(int totalCount){ ~l8w]R3A
if(totalCount > 0){ JT! Cb$!
this.totalCount = totalCount; ~p`[z~|
int count = totalCount / |ju+{+
b]4\$ rW7
pageSize; A<y]D.Z"
if(totalCount % pageSize > 0) vW-o%u*
count++; <{T5}"e
indexes = newint[count]; pkf$%{"e
for(int i = 0; i < count; i++){ 2~l +2..
indexes = pageSize * xOx=Z\ c
x=03WQ8
i; t3b M4+n
} t52KF#+>
}else{ `x`zv1U
this.totalCount = 0; .lAPlJOO
} ;efF]")
} >a;LBQ0
)Ut K9;@"
publicint[] getIndexes(){ q 2P_37
return indexes; PJO.^OsM
} tlM >=s'T
t$&'mJ_-w
publicvoid setIndexes(int[] indexes){ zZW5M^z8
this.indexes = indexes; "/yS HB[
} Pm]lr|Q{I
*P/DDRq(2
publicint getStartIndex(){ Ss3~X90!*B
return startIndex; Q?bCQZ{-Lh
} %ol\ sO|
1QPz|3f@\
publicvoid setStartIndex(int startIndex){ =$y;0]7Lwi
if(totalCount <= 0) H)h$@14xu
this.startIndex = 0; I7\T :Q[
elseif(startIndex >= totalCount) :PK2!
0nK
this.startIndex = indexes )KY4BBc
t`Rbn{
[indexes.length - 1]; Y!`pF
elseif(startIndex < 0) jwg*\HO,s
this.startIndex = 0; 6!HYx
else{ nvCp-Z$
this.startIndex = indexes EiDnUL(W7h
'jXJ!GFw
[startIndex / pageSize]; f_Hh"Vh
} 8!b>[Nsc
} !+z&] S3s
D~FIv
publicint getNextIndex(){ "=ki_1/P
int nextIndex = getStartIndex() + QUm[7<"
jNI9 .45y
pageSize; w9StW94p
if(nextIndex >= totalCount) +k
h
Tl:
return getStartIndex(); 1*e7NJ/.,
else };R2M
return nextIndex; WL|<xNL
} OnH3Ss$
)gD2wk(
publicint getPreviousIndex(){ F|G v
int previousIndex = getStartIndex() - 9 I:3
3mHP=)
pageSize; G?, "AA;
if(previousIndex < 0) !*3]PZ25a(
return0; AV4fN@BX
else #Cx#U"~G`
return previousIndex; Z^BZH/I?
} PC\p>6xT
?-~<Vc*
} e _(';Lk
liqVfB%
PI@?I&Bo
6XHM `S
抽象业务类 0Y'ow=8M
java代码: 3<l}gB'S[
K,6{c^qf
P+y XC^ ,
/** \mTi@T!&
* Created on 2005-7-12 ,:#h;4!VRF
*/ a*t @k*d_
package com.javaeye.common.business; ;n.h !wmJ}
Nobu=
Z
import java.io.Serializable; /;TtMQt
import java.util.List; cNikLd~?A
>5E1y!
import org.hibernate.Criteria; *Z\AO'h=Z
import org.hibernate.HibernateException; 0_AIKJrL
import org.hibernate.Session; Ly/
import org.hibernate.criterion.DetachedCriteria; 0176
import org.hibernate.criterion.Projections; @FZ_[CYg
import @LFB}B
t&p I
org.springframework.orm.hibernate3.HibernateCallback; R)4,f~@"
import >Q'*~S@v3
|#{ i7>2U
org.springframework.orm.hibernate3.support.HibernateDaoS *VHWvj
A^$xE6t
upport; >JA>np
ujl?!
import com.javaeye.common.util.PaginationSupport; yJ`{\7Uqg
y>:U&P^
public abstract class AbstractManager extends `A5n6*A7
cs_
HibernateDaoSupport { M6 8foeeN
L0I|V[
privateboolean cacheQueries = false; <CJy3<$u
"',;pGg|K
privateString queryCacheRegion; tSnsjd<6.
y(/5l
publicvoid setCacheQueries(boolean =c$x xEDD
Q/]o'_[vW
cacheQueries){ sxS%1hp3
this.cacheQueries = cacheQueries; a#G3 dY>
} Pd& Npp3
R^=v&c{@
publicvoid setQueryCacheRegion(String ay||yn:
W8Wjq
DQ
queryCacheRegion){ *>`6{0,9
this.queryCacheRegion = {;th~[
=}@1Z~
queryCacheRegion; %!AzFL
J|Z
} 2s>BNWTU
#qUGc`
publicvoid save(finalObject entity){ uix/O*^
getHibernateTemplate().save(entity); Q, "8Ty
} pr1bsrMuL
)pe17T1|
publicvoid persist(finalObject entity){ C@[U:\
getHibernateTemplate().save(entity); Jh<s '&FR
} X h}D_c
fYzP4
publicvoid update(finalObject entity){ z;?j+ZsdH
getHibernateTemplate().update(entity); 00s)=A_
} XPZ8*8JL
Vy| 4k2
publicvoid delete(finalObject entity){ Rry]6(
getHibernateTemplate().delete(entity); -rjQ^ze
} AlG5n'
yGSZ;BDW:K
publicObject load(finalClass entity, Gg]Jp:GF
%rgW}Z5
finalSerializable id){ =F Y2O`%a
return getHibernateTemplate().load fBh/$
Hq,@j{($
(entity, id); #D%6b
} Qca3{|r`
wf1p/bpf
publicObject get(finalClass entity, fLd2{jI,
&cJ?mSI
finalSerializable id){ LXsZk|IhM
return getHibernateTemplate().get AaoS &q
n)Cr<^j
(entity, id); 7-Oa34ba+
} ^E Rdf2
}%jpqip
publicList findAll(finalClass entity){ 1X`,7B@pz
return getHibernateTemplate().find("from =kzp$ i
>M!LC
" + entity.getName()); Jw&Fox7p
} Ziub%C[oV
[}GK rI
publicList findByNamedQuery(finalString #B6f{D[pI
"wg$ H1K
namedQuery){ AL^tUcl
return getHibernateTemplate ggitUQ+t;G
H~mp*S
().findByNamedQuery(namedQuery); [~RO9=;L
} E/wxX#]\
FC6~V6R
publicList findByNamedQuery(finalString query, %;R&cSZ