Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 /cJ$`
pN
wDem
}uO
detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 -F4CHpua
O#H `/z
据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 YCeE?S1gk3
ZJP.-` U
自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 A_{QY&%m
b?CmKiM%
。 W+H27qsv
yT-m9$^v
分页支持类: v8y77:
+'=^/!
java代码: ?T$i
_q)`Y:2
g/lv>*+gS
package com.javaeye.common.util; ~fAdOh
^ ^}
import java.util.List; 67 }y/C]<
7eQ7\,^H
publicclass PaginationSupport { F{[2|u(4
[bJ"*^M)
publicfinalstaticint PAGESIZE = 30; 4eU};Pv
TcpD*%wW
privateint pageSize = PAGESIZE; >Hic
tH
_&XT
=SW}
privateList items; {tu* ="d=
'iXjt
MX
privateint totalCount; Mn7 y@/1
wI
#_r_
privateint[] indexes = newint[0]; z/F(z*'v
QD+dP nZu
privateint startIndex = 0; w<J$12
"p+
2(5wFc
public PaginationSupport(List items, int `2J6Dz"W
`;hsOfo
totalCount){ oE"!
setPageSize(PAGESIZE); n1y#gC
setTotalCount(totalCount); r7C
m
setItems(items); yHCQY4/
setStartIndex(0); RT)0I;
} lh7{2WQ
T_[W=9
public PaginationSupport(List items, int +;Q&
nvu|V3B0
totalCount, int startIndex){ =XQ3sk6U
setPageSize(PAGESIZE); mmwwz
setTotalCount(totalCount); !g=,O6
setItems(items); UmiW_JB
setStartIndex(startIndex); HpDU:m
} ~b3xn T
zST#X}
public PaginationSupport(List items, int VXn]*Mo
MZn7gT0
totalCount, int pageSize, int startIndex){ p
%
3B^
setPageSize(pageSize); %ghQ#dZ]&
setTotalCount(totalCount); '}P)iS2
setItems(items); <H}"xp)j0
setStartIndex(startIndex); nl*{@R.q @
} #n{wK+lz
u<!!%C~+=
publicList getItems(){ <C+:hsS=
return items; &^63*x;hE
} e~'y %| D
6xk"bIp
publicvoid setItems(List items){ 9{70l539
this.items = items; /-^gK^
}
*ErTDy(
aZ*b"3
publicint getPageSize(){ U[U$1LSS
return pageSize; +'uF3-+WY
} wCMsaW
Z)P x6\?+
publicvoid setPageSize(int pageSize){ xfkG&&
this.pageSize = pageSize; '[qG ,^f
} 'bY^=9&|
K&BlWXT
publicint getTotalCount(){ p|(910OEQ
return totalCount; X2dTV}~i
} u-OwL1S+
"! p#8jR^
publicvoid setTotalCount(int totalCount){ eU@yw1N
if(totalCount > 0){ U6jlv3
this.totalCount = totalCount; -CtA\<7I
int count = totalCount / BB--UM{7
wE%v[q[*X
pageSize; JF: QQ\
if(totalCount % pageSize > 0) cp0>Euco=
count++; ~M(K{6R
indexes = newint[count]; [xO^\oQa=c
for(int i = 0; i < count; i++){ x"8(j8e
indexes = pageSize * 9@QP?=\Y
1_7x'5GdA
i; L9fhe,en
} H!Uy4L~>
}else{ r.-NfK4
this.totalCount = 0; #Sb1oLC
} v}xz`]MW<,
} (G#)[0<fX
pSE"]N
publicint[] getIndexes(){ wMt?yc:X
return indexes; T-fW[][&$
} 4{CVBowi
9m!4 U2N,s
publicvoid setIndexes(int[] indexes){ `9a%}PVQ-
this.indexes = indexes; ``w,CP ?
} C~'}RM
s,K @t_J
publicint getStartIndex(){ +wD--24!(
return startIndex; [g=yuVXNZZ
} }4cLU.L8O
$o/?R]h
publicvoid setStartIndex(int startIndex){ J:#B,2F+^
if(totalCount <= 0) oF]0o`U&a
this.startIndex = 0; D?@330'P9C
elseif(startIndex >= totalCount) KNIYar*3
this.startIndex = indexes m[ay
K`(STvtM
[indexes.length - 1]; g@MTKqs
elseif(startIndex < 0) {n$9o
this.startIndex = 0; eW\7X%I
else{ e_k1pox]l
this.startIndex = indexes fcnbPO0M
+c}fDrr)
[startIndex / pageSize]; T>vH ZZiO
} ws?p2$ Cla
} }(op;7
U+~0m!|4
publicint getNextIndex(){ {(ey!O
int nextIndex = getStartIndex() + b=K
6D{|! i|r4
pageSize; Iimz
if(nextIndex >= totalCount) f*W<N06EZ
return getStartIndex(); CN\s,. ]
else .H7"nt^
return nextIndex; B`"-~4YAf
} !x;T2l
+P}'2tE~'
publicint getPreviousIndex(){ hkHMBsNi
int previousIndex = getStartIndex() - :V}8a!3h
,6i67!lb
pageSize; c{|soc[#
if(previousIndex < 0) #(ANyU(#e
return0; =ZzhH};aX
else r^WO$u|@i
return previousIndex; <X|"5/h
} ;#`Z(A}
f7d)
} Sh2q#7hf
>,uof ?
1i bQ'bZ
*bmk(%g
抽象业务类 .LnXKRd{
java代码: *% Vd2jW/
9OF5A<%"u
{YK6IgEsJe
/** ;\4}Hcg
* Created on 2005-7-12 5 xTm]
*/ isWB)$q
package com.javaeye.common.business; 'e;*V$+
L
G{N
import java.io.Serializable; 7lR(6ka&/
import java.util.List; N5%~~JRO
EJdq"6S
import org.hibernate.Criteria; @8n0GCv
import org.hibernate.HibernateException; Tk.MtIs)V}
import org.hibernate.Session; Q}\,7l
import org.hibernate.criterion.DetachedCriteria;
?o9l{4~g
import org.hibernate.criterion.Projections; _f^q!tP&d
import WDE_"Mm
<mrLld#_:C
org.springframework.orm.hibernate3.HibernateCallback; 9DKmXL
import g@B9i=
#\%GrtM
org.springframework.orm.hibernate3.support.HibernateDaoS P*I\FV
^row=5]E
upport; 6st(s@>
(:Bo'q
S
import com.javaeye.common.util.PaginationSupport; 2rPKZ|
a^4(7
public abstract class AbstractManager extends
F_YZV)q!W
9dqD(S#C;"
HibernateDaoSupport { 2=F_<Jh|+
-}4 H'%Z(i
privateboolean cacheQueries = false; Yk?uxZ4)H
+-qD!(&-6
privateString queryCacheRegion; '~3(s?B
N|1J@"H
publicvoid setCacheQueries(boolean
78qf
LP=!u~?
cacheQueries){ "/ @
;6
this.cacheQueries = cacheQueries; KC q3S
} |])%yRAGQ
,1^)JshZ~
publicvoid setQueryCacheRegion(String zs[t<`2
3Y=T8Gi#
queryCacheRegion){ OjrQ[`(E
this.queryCacheRegion = Y<a/(`
/R9>\}.yJ
queryCacheRegion; [h%_` 8z
} 7F}I.,<W
rrbCg(
publicvoid save(finalObject entity){ -W+dsZ Sv8
getHibernateTemplate().save(entity); {oBVb{<
} q.Z0Q
NmOQ7T
publicvoid persist(finalObject entity){ I0Wn?Qq=@
getHibernateTemplate().save(entity); b$rBxe\
} D=9x/ ) *G
,!sAr;Rk`
publicvoid update(finalObject entity){ 2HQHC]
getHibernateTemplate().update(entity); [>C^ 0\Z~
} ag|d_;
V!]e#QH;
publicvoid delete(finalObject entity){ -J? df
getHibernateTemplate().delete(entity); f4@Dn
>BJ
} {a%T <WW
&S3szhe
publicObject load(finalClass entity, LoBKR
c2t
2<u vz<B
finalSerializable id){ 'y'>0'et
return getHibernateTemplate().load Eptsxyz{
Kq-y1h]7H
(entity, id); aASnk2DFd
} pC#Z]_k
LNg[fF^:
publicObject get(finalClass entity, } c&Zv#iO6
W=F?+KgL
finalSerializable id){ [0)iY%^
return getHibernateTemplate().get eYsO%y\I
W{Nhh3
(entity, id); Eq'{uV:
} 1AoBsEnd
dQ;rO$co
publicList findAll(finalClass entity){ M}38uxP
return getHibernateTemplate().find("from ^@{'! N
^0X86
" + entity.getName()); ] +Gi~
} j
q1qj9KZ
;9u6]%hQTX
publicList findByNamedQuery(finalString W]6Y
buP:
Yng9_w9Y
namedQuery){ b3Y9
return getHibernateTemplate z %mM#X
sjShm
().findByNamedQuery(namedQuery); %9Ulgs8 =
} 9J2%9,^
C_'Ug
publicList findByNamedQuery(finalString query, ps<JKHC/c
`33h4G
finalObject parameter){ ?P"ht
return getHibernateTemplate iW)FjDTP
{d^&$~
().findByNamedQuery(query, parameter); %v}:#_va]
} b%|%Rek8
8V~w3ssz
publicList findByNamedQuery(finalString query, #c?\(qjWA
tw*qlb FHv
finalObject[] parameters){ )O2^?Q quS
return getHibernateTemplate _NqEhf:8
AQ+w%>G6
().findByNamedQuery(query, parameters); YW/YeID
} 3fM
HC!$Z`}Y
publicList find(finalString query){ RJBNY;0
return getHibernateTemplate().find C(W?)6?
IybMO5Mwn
(query); n"_EDb
} wXNFL9F8
O- r"G
publicList find(finalString query, finalObject [@>Kd`!'
zFQxW4G
parameter){ /6L\`\g
return getHibernateTemplate().find ;O{AYF?,N
.bnoK
(query, parameter); CXA)Zl5#
} fyQAQZT
UN,@K9
public PaginationSupport findPageByCriteria !7 *X{D v
4fpz;2%
(final DetachedCriteria detachedCriteria){ E;-R<X5n
return findPageByCriteria o{zo-:>Jp
{I(Euk>lR
(detachedCriteria, PaginationSupport.PAGESIZE, 0); K6|*-Wo.
} A"S})
7CwG(c/5
public PaginationSupport findPageByCriteria M[TgNWl/[
vK2L"e
(final DetachedCriteria detachedCriteria, finalint q[dls_
5^P)='0*
startIndex){ w6#hsRq[C
return findPageByCriteria i]F,Y;&|
/=Q7RJ@P
(detachedCriteria, PaginationSupport.PAGESIZE, :LcR<>LZ
i~l0XjQbs
startIndex); $?;aW^E
} OZk(VMuI
8$3 Tu"+;
public PaginationSupport findPageByCriteria t0}3QGf;c
u-j Gv| ,|
(final DetachedCriteria detachedCriteria, finalint Y
Xn)?
VCvuZU{<
pageSize, 4-cnkv\~
finalint startIndex){ =I7#Vtd^K<
return(PaginationSupport) KY4|C05,
atW;S99#
getHibernateTemplate().execute(new HibernateCallback(){ Fwho.R-.
publicObject doInHibernate 5:56l>0
MdEZ839J
(Session session)throws HibernateException { Xg.\B1d
Criteria criteria = r7w&p.?
G9}[g)R*
detachedCriteria.getExecutableCriteria(session); /r}t
int totalCount = 9\Yj`,i5
xPsuDi8u
((Integer) criteria.setProjection(Projections.rowCount l'-iIbKX
ogjm6;
()).uniqueResult()).intValue(); dos$d3B4
criteria.setProjection rD<@$KpP
gD&%$&q
(null); +2C:]
List items = e2/&X;2
Isoqs(Oi
criteria.setFirstResult(startIndex).setMaxResults <qHwY.
s u![ST(
(pageSize).list(); #sNa}292"
PaginationSupport ps = i"|'p/9@q
^qV*W1|0
new PaginationSupport(items, totalCount, pageSize, w*Kw#m'U
/ ^!(rHf
startIndex); mn
8A%6W
return ps; T6AFwo,Q
} {WFYNEQ[
}, true); R2u[IVZW:-
} T<p>:$vo
`\O[9.B
public List findAllByCriteria(final u5T\_0
.KRh59yg
DetachedCriteria detachedCriteria){ D~2,0K
return(List) getHibernateTemplate ?]$.3azO
jd(=? !_
().execute(new HibernateCallback(){ !BK^5,4?--
publicObject doInHibernate %&e5i
p3sz32RX
(Session session)throws HibernateException { a>""MC2
Criteria criteria = HykJ}ezX4
B`T9dL[E4
detachedCriteria.getExecutableCriteria(session); Q"QrbU
return criteria.list(); 5#WZXhlc}
} =EV8~hMyqh
}, true); )+\e+Ad}H
} MO/l(wO
L`];i8=I
public int getCountByCriteria(final c5O1h8
5_=&U-? H
DetachedCriteria detachedCriteria){ -FE5sW
Integer count = (Integer) KDHR}`
Ur5X~a\y
getHibernateTemplate().execute(new HibernateCallback(){ J,P7k$t2vv
publicObject doInHibernate (K0FWTmm
:/
"qNPJ
(Session session)throws HibernateException { ,uDB]
Criteria criteria = 64>Zr
+Uj~zx@
detachedCriteria.getExecutableCriteria(session); GAz;4pUZ
return (8H
"'
I /> .P
criteria.setProjection(Projections.rowCount |@V<}2zCZ
c$1ez
()).uniqueResult(); &