Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 wqo2iRql
@(.?e<
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 6suB!XF;
Db({k,P'Y
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 ~D@pk>I
2L.UEAt
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 &*g5kh{
uF5d
]{Qt
。 fX G+88:2
@t`|w.]ml
分页支持类: #I9|>XE1
%o<&O(Y
java代码: QQ@, v@j5
R7T"fN
}4xxge?r
package com.javaeye.common.util; L]0+u\(
RLY Ae
import java.util.List; `9Ngax=_
RhyI\(Z2q
publicclass PaginationSupport { 9\TvX!)h
,G1|]
~
publicfinalstaticint PAGESIZE = 30; `< y[V
i2b\`
805
privateint pageSize = PAGESIZE; !Dkz6B*
hXS'*vO"
privateList items; sAk~`(:4!
9<<$uf.B
privateint totalCount; BieII$\P%P
YkPz ~;
privateint[] indexes = newint[0]; do*`-SDy
'N=' B<^;%
privateint startIndex = 0; ?t)y/@eG
fh$U"
public PaginationSupport(List items, int 4q@o4C<0
3]'=s>UO>^
totalCount){ F-k1yZ?^
setPageSize(PAGESIZE); s5|LD'o!
setTotalCount(totalCount); M;zRf3S
setItems(items); cv:nlq)
setStartIndex(0); _KmpC>J+
} 9b]*R.x:$&
/Re1QS
public PaginationSupport(List items, int aC3\Hs
l=9&
totalCount, int startIndex){ voQ, K9
setPageSize(PAGESIZE); %9mB4Fc6b)
setTotalCount(totalCount); qCgP8U/jv
setItems(items); tP!sOvQ:
setStartIndex(startIndex); 3}g?d/^E3
} 1I3u~J3]/
pI(FUoP^
public PaginationSupport(List items, int 1b3Lan_2
\<lV),
totalCount, int pageSize, int startIndex){ EUuMSDp
setPageSize(pageSize); w?M*n<)
O
setTotalCount(totalCount); V<4)'UI?k9
setItems(items); ~w]1QHA'f
setStartIndex(startIndex); :Yz.Bfli
} }sJ%InL
4vqu(w8
L
publicList getItems(){ DA@
{ d-A
return items; S"3g 1yU^_
} iUI,r*
vy|}\%*r~
publicvoid setItems(List items){ &<UOi@
this.items = items; SmR*b2U
} ?!~au0
ui 2RTAb
publicint getPageSize(){ $ @1&G~x
return pageSize; kI[EG<N1k
} 82/iVm1
q6_1`Ew
publicvoid setPageSize(int pageSize){ =Fj:#s
this.pageSize = pageSize; IwH
,g^0\
} ["L?t ^*G
:cC`wX$
publicint getTotalCount(){ ;( 2uQ#Y
return totalCount; ^Ws~h\{%
} LoCxoAg
D3^v[>E2
publicvoid setTotalCount(int totalCount){ i-ogeR?
if(totalCount > 0){ 1}ToR=
this.totalCount = totalCount; *n[Fl
int count = totalCount / hR`dRbBi%
6kDU}]c:H]
pageSize;
?5GjH~
if(totalCount % pageSize > 0) 5cE[s<=
count++; /:USpuu
indexes = newint[count]; O-'T*M>
for(int i = 0; i < count; i++){ cxv)LOl-
indexes = pageSize * ljf9L:L
9a4RW}S<
i; \@F{Q-
} _9gn;F
}else{ (f.A5~e
this.totalCount = 0; ^al
SyJ`
} ePY K^D
} ,`Mlo
OB^
publicint[] getIndexes(){ =VSieh
return indexes; :m~lgb<
} X>B/DT
kN) pi "
publicvoid setIndexes(int[] indexes){ V\xQM;
this.indexes = indexes; w'eenIX^^
} #,9|Hr%
s`TBz8QO$
publicint getStartIndex(){ 2>r.[
return startIndex; u}h'v&"e,
} He@= bLLa
7xcYM
publicvoid setStartIndex(int startIndex){ :Oj+Tc9A
if(totalCount <= 0) Q:LuRE!t
this.startIndex = 0; @Uu\x~3y
elseif(startIndex >= totalCount) PDsLJ|:yL
this.startIndex = indexes g[n8N{s
<wA_2S
Y
[indexes.length - 1]; ditzl(L
elseif(startIndex < 0) M]{!Nx
this.startIndex = 0; t2gjhn^p
else{ i0!F
this.startIndex = indexes 2u:j6ic
6]3ZUH;
[startIndex / pageSize]; =1(BKk>
} Ij8tBT?jlL
} lyPXlt
%qHT!aP
publicint getNextIndex(){ |)_R
bqZ
int nextIndex = getStartIndex() + Y>%NuL|s
u0e#iX
pageSize; Y^G3<.B
if(nextIndex >= totalCount)
R
pbl)
return getStartIndex(); t<7WM'2<y
else 2uTa}{/%
return nextIndex; `3KprpE8v
} +g[B &A!d+
N'1~ wxd
publicint getPreviousIndex(){ g}-Z]2(c#
int previousIndex = getStartIndex() - Gpu?z-)
l_%~X9"
pageSize; m [g}vwS
if(previousIndex < 0) "m3Y))a
return0; |gz,Ip{
else rZv+K/6*M
return previousIndex; :I('xVNPz
} ;cr6Xop#?
m5pVt4
} |DD?3#G01
;`B35K
lo: ~~l
(0Cszm.
抽象业务类 cZ >W8{G
java代码: >B
DO1{r/Ib.{
Yn>zR I
/** 5m42Bqy"
* Created on 2005-7-12 *F*X_O
*/ -/%jeDKp
package com.javaeye.common.business; to 6Q90(
&*aU2{,s,;
import java.io.Serializable; ^mpB\D)q
import java.util.List; j!\0Fyr
oDUMoX%4s
import org.hibernate.Criteria; 63S1ed[
import org.hibernate.HibernateException; WZ&@
J B
import org.hibernate.Session; 6sl<Z=E#
import org.hibernate.criterion.DetachedCriteria; Xb*_LZAU
import org.hibernate.criterion.Projections; lM*O+k
import bOMP8{H,
]ECZU
org.springframework.orm.hibernate3.HibernateCallback; R+0"B
import }dJ ~Iy
x
5Dt5Yp"o
org.springframework.orm.hibernate3.support.HibernateDaoS N RSse"
"v!HKnDT
upport; vXyo
yQ{_\t1Wd
import com.javaeye.common.util.PaginationSupport; 2gAdZE&Y
~@ b}=+n
public abstract class AbstractManager extends YO$b#
Wmxw!
HibernateDaoSupport { Os 2YZ<t
K)UOx#xe1
privateboolean cacheQueries = false; sFCs_u1tNN
y~c[sW
privateString queryCacheRegion; zl
0^EltiU
S\g7wXH
publicvoid setCacheQueries(boolean f^sb0nU
-!G#")<
cacheQueries){ L_ qv<iM$
this.cacheQueries = cacheQueries; :YXQ9/iRr
} zMzf=~
<VR&=YJ
publicvoid setQueryCacheRegion(String zRoEx1
yn":!4U1
queryCacheRegion){
e=)*O
this.queryCacheRegion = zGd*Q5l
3KFrVhB=
queryCacheRegion; mRnzP[7-\)
} k>;r9^D
*5'6E'
publicvoid save(finalObject entity){ f9XO9N,hE:
getHibernateTemplate().save(entity); m\Fb ,
} gc:p@<
DD6`k*RIk.
publicvoid persist(finalObject entity){ r]//Q6|S
getHibernateTemplate().save(entity); j X!ftm2
} UH,4b`b
27YLg c
publicvoid update(finalObject entity){
!QW 0
getHibernateTemplate().update(entity); }V#9tWW
} VBsFT2XiL
lyH X#]
publicvoid delete(finalObject entity){ Ta\8>\6
getHibernateTemplate().delete(entity); {S"
} KYmWfM3^
\
[^)
WQ
publicObject load(finalClass entity, &B7+>Ix,
b}*@=X=4o
finalSerializable id){ /Zeg\}/4[
return getHibernateTemplate().load -k[tFBlw
Or#+E2%1E
(entity, id); U>B5LU9&
} g9weJ6@}M
GKsL~;8"
publicObject get(finalClass entity, sHPwW5j/o'
>&Ui*
finalSerializable id){ "G-0i KW;
return getHibernateTemplate().get pGbFg&
Rr;LV<q+
(entity, id); 2*FWIHyf
} #nf%ojh
K0DXOVT\
publicList findAll(finalClass entity){ ?ZuD
_L-i
return getHibernateTemplate().find("from 6(q`Oj
l;{N/cS
" + entity.getName()); _Dcc<-.
} WP@JrnxO\`
E_![`9i
publicList findByNamedQuery(finalString Z/6'kE{l
o S:vTr+$
namedQuery){ ~q]|pD"\K|
return getHibernateTemplate {?>bblw/d
hNq8
uyKx
().findByNamedQuery(namedQuery); sAjKf\][
} mb~=Xyk&
M8",t{7
publicList findByNamedQuery(finalString query, fdq^!MWTi
K7[AiU_I
finalObject parameter){ DtJTnvG~B
return getHibernateTemplate &t*8oNwSs
v1"g!%U6
().findByNamedQuery(query, parameter); THbtu*El
} (4{ C7
4Fr7jD,#k
publicList findByNamedQuery(finalString query, f?>-yMR|
B=Zukg1G
finalObject[] parameters){ JJ
N(M*;
return getHibernateTemplate sx-Hw4.a"
94'k7_q
().findByNamedQuery(query, parameters); 5}d/8tS
} /:Z~"Q*r
g@k#J"Q'[
publicList find(finalString query){ X8,7_D$
return getHibernateTemplate().find 7i+!^Qj?y
_/N'I7g
(query); =mi:<q
} G1?0Q_RN
94p:| 5@
publicList find(finalString query, finalObject =;k+g?.@I
M8#*zCp{5
parameter){ 9Ew:.&d
return getHibernateTemplate().find q2S!m6 !
Mg a@JA"
(query, parameter); :Er^"9'A2
} j5,^9'
n ,&/D
public PaginationSupport findPageByCriteria wZo.ynXT
fd5ZaE#f
(final DetachedCriteria detachedCriteria){ /slm
]'
return findPageByCriteria E VN-<=i^
V>FT~k_"
(detachedCriteria, PaginationSupport.PAGESIZE, 0); l\T!)Ql
} s.R-<Y3
J8u{K.(*7
public PaginationSupport findPageByCriteria `x{.z=xC
XSm"I[.g
(final DetachedCriteria detachedCriteria, finalint M1/M}~
nOAJ9
startIndex){ S'
(cqO}=F
return findPageByCriteria Hhe{ +W@~
5|<yfk8*J
(detachedCriteria, PaginationSupport.PAGESIZE, QQg8+{>
BR& Aq
startIndex); ;~Q
} 99l>CYXd
T~i%j@Q.6
public PaginationSupport findPageByCriteria F`Dg*O
aN^]bs?R
(final DetachedCriteria detachedCriteria, finalint ,:#,}w_HyO
8)^B32
pageSize, \)OZUch
finalint startIndex){ a|DsHZ^6^
return(PaginationSupport) z-EwXE
Y7<zm}=(/
getHibernateTemplate().execute(new HibernateCallback(){ YSR mt/
publicObject doInHibernate hpbwZ
q"gqO%Wb|
(Session session)throws HibernateException { v ! 7s
M
Criteria criteria = _j:UGMTi(U
nNt*} k
detachedCriteria.getExecutableCriteria(session); +h0PR?
int totalCount = E,{GU
z$JX'(<Z7
((Integer) criteria.setProjection(Projections.rowCount Y/.AUN
Z
{Ge+O<mD
()).uniqueResult()).intValue(); aWyUu/g<A`
criteria.setProjection 96(R'^kNX
j|:dYt`WM
(null); e]lJqC
List items = Fi mN?s
rRB~=J"
criteria.setFirstResult(startIndex).setMaxResults ldA!ou7
>\V6+$cNp
(pageSize).list(); ;Vg^!]LL#
PaginationSupport ps = f}^I=pS&
I*EJHBsQ5
new PaginationSupport(items, totalCount, pageSize, bS>R5*Zp
Z&_y0W=t
startIndex); H&M1>JtE
return ps; qAoAUDm
} 9B
/s
}, true); {fZb@7?GF
} JPEIT
Yc^%zxub
public List findAllByCriteria(final a 6%@d_A
}g~g50ci
DetachedCriteria detachedCriteria){ >R!"P[*
return(List) getHibernateTemplate tQWWgLM
m`z7fi7u
().execute(new HibernateCallback(){ LheFQ A
publicObject doInHibernate B`fH^N
OTj,O77k
(Session session)throws HibernateException { U&X2cR &a
Criteria criteria = h4_b!E@
|( G2K'Ab
detachedCriteria.getExecutableCriteria(session); sYJL-2JX
return criteria.list(); (&jW}1D
} WmeKl
}, true); "+)K |9T#
} HTV ~ ?E
Ve}[XqdS^p
public int getCountByCriteria(final `\bT'~P
Oe51PEqn
DetachedCriteria detachedCriteria){ r`jWp\z
Integer count = (Integer) ,>n%
~'gb
`0{ S3v
getHibernateTemplate().execute(new HibernateCallback(){ Ytao"R/
publicObject doInHibernate p~&BChBl!=
b O=yi)
(Session session)throws HibernateException { pj0fM{E
Criteria criteria = >O#grDXb
"X04mQn15
detachedCriteria.getExecutableCriteria(session); c
pk^!@c
return ySe$4deJ
](#&.q%5!
criteria.setProjection(Projections.rowCount 7G<