Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 &]w#z=5SXi
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 :3v9h^|+
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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 z; J
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 L^lS^P
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分页支持类: :AZp}
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java代码: A^-iHm
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package com.javaeye.common.util; ~P/]:=
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import java.util.List; kfXS_\@iW1
F=srkw:*.
publicclass PaginationSupport { Vc| NL^
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publicfinalstaticint PAGESIZE = 30; =c&62;O
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privateint pageSize = PAGESIZE; S/VA~,KCe;
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privateList items; 4Q;<Q"
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privateint totalCount; HcA[QBh
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privateint[] indexes = newint[0]; PB+\jj
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privateint startIndex = 0; RK-x?ZYH'
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public PaginationSupport(List items, int u#FXW_-TK
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totalCount){ 4f!dYo4L
setPageSize(PAGESIZE); QWw"K$l
setTotalCount(totalCount); ;u,rtEMy;
setItems(items); _%%yV
setStartIndex(0); FuuS"G,S
} p5-<P?B
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public PaginationSupport(List items, int &mcR
"qS!B.rt:
totalCount, int startIndex){ jn^fgH?
setPageSize(PAGESIZE); iT.|vr1HG
setTotalCount(totalCount); ^7Lk-a7gp
setItems(items); !Av1Leb9$
setStartIndex(startIndex); >yKpM }6l{
} J?IC~5*2
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public PaginationSupport(List items, int F$h'p4$T
ds]?;l"
totalCount, int pageSize, int startIndex){ -D#5o,]3
setPageSize(pageSize); T%kKVr
setTotalCount(totalCount); ")ED)&e
setItems(items); 9`BEi(z
setStartIndex(startIndex); ]YsR E>
} B9*Sfw%
&:No}6
publicList getItems(){ t!{x<9
return items; l<xFnj
} +*C^:^jA
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publicvoid setItems(List items){ f*<ps
o
this.items = items; !!WJn}
} K6hfauWd[
hO6RQ0Iv@
publicint getPageSize(){ -2 xE#r
return pageSize; &DLhb90
} ~M*gsW$
1"O&40l
publicvoid setPageSize(int pageSize){ 4)^vMG&
this.pageSize = pageSize;
RL*]g*
} TT7PQf >
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publicint getTotalCount(){ {2:d`fqD
return totalCount; (;UP%H>
} /lJjQ]c;>
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publicvoid setTotalCount(int totalCount){ PBrnzkoY
if(totalCount > 0){ %K zbO0
this.totalCount = totalCount; x>
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int count = totalCount / rz.IoQo
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pageSize; /cfHYvnz
if(totalCount % pageSize > 0) Rg&19}BU
count++; -NzTqLBn
indexes = newint[count]; :Fw?{0
for(int i = 0; i < count; i++){ ZMdW2_*F
indexes = pageSize * fa{@$ppx
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i; M/#U2!iFk
} &z>q#'X;.
}else{ EwQae(PpA
this.totalCount = 0; :B.G)M\
} v9rVpYc"
} Q#pnj thM
h<% U["
publicint[] getIndexes(){ dIJGB==
return indexes; Gw{+xz KJ
} q-
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publicvoid setIndexes(int[] indexes){ &@6 GI<
this.indexes = indexes; g$w6kz_[
} j"hASBTgp
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publicint getStartIndex(){ e+@xsn3
return startIndex; v=p0 +J>
} ,|pp67
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publicvoid setStartIndex(int startIndex){ M&yqfb[
if(totalCount <= 0) J=*K"8Qr
this.startIndex = 0; )GJP_*Ab
elseif(startIndex >= totalCount) Qh-4vy=r
this.startIndex = indexes m7m
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tD-gc''H
[indexes.length - 1]; _whF^g8
elseif(startIndex < 0) |<(t}}X
this.startIndex = 0; a$m_D!b~_
else{ 9m8ee&,
this.startIndex = indexes tU:FX[&?R
Qq3fZ=
[startIndex / pageSize]; ~`R1sSr"
} G{o+R]Us
} z+/LS5$
yX!#a>d"H
publicint getNextIndex(){ (Es{l a G
int nextIndex = getStartIndex() + Rla4L`X;
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pageSize; M<(u A'
if(nextIndex >= totalCount) *jF#^=
return getStartIndex(); U$'y_}V
else C[YnrI!
return nextIndex; <HQ&-j x
} T//S,
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publicint getPreviousIndex(){ e{C6by"j{S
int previousIndex = getStartIndex() - F=}Z51|:~
^>m^\MuZ
pageSize; V;93).-$
if(previousIndex < 0) Dp^/gL=
return0; {?i)K X^
else D{C:d\ e)$
return previousIndex; J^ ={}
} ce' TYkPM
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} lIh[|]
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抽象业务类 kG^dqqn6
java代码: ~lw<799F6
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/** 2OalAY6RS
* Created on 2005-7-12 Jqru AW<
*/ >Z\BfH
package com.javaeye.common.business; ]a/'6GbR
/2@["*^$
import java.io.Serializable; 4;*f1_;f~
import java.util.List; %-j&e44
0 {R/<N
import org.hibernate.Criteria; I/B1qw;MN
import org.hibernate.HibernateException; xK;e\^v
import org.hibernate.Session; "^%Z'ou
import org.hibernate.criterion.DetachedCriteria; ~>%DKJe
import org.hibernate.criterion.Projections; Zq*eX\#C
import uA\J0"0;}
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org.springframework.orm.hibernate3.HibernateCallback; 5f{|"LG&
import 8Rxc&`_X
#J$qa Ul
org.springframework.orm.hibernate3.support.HibernateDaoS Nn#u%xvJt
9#rt:&xo0
upport; Z@J.1SaB
5 =Z!hQ}
import com.javaeye.common.util.PaginationSupport; Uix{"
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public abstract class AbstractManager extends #D)x}#V\
}.{}A(^YR
HibernateDaoSupport { 9;KJr[FQV
j|K.i/
privateboolean cacheQueries = false; >;nS8{2o
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privateString queryCacheRegion; @J vZ[T/
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publicvoid setCacheQueries(boolean ~L4eZ
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cacheQueries){ Y\?j0X;
this.cacheQueries = cacheQueries; 0ar=cuDm
} |F!F{d^p
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publicvoid setQueryCacheRegion(String n`L,]dco
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queryCacheRegion){ uD)-V;}P@;
this.queryCacheRegion = a$}mWPp+f
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queryCacheRegion; -7`-wu
} Sz0+<F#5
.nZ3kT`
publicvoid save(finalObject entity){ EOVZGZF
getHibernateTemplate().save(entity); b3U6;]|x
} X\sm[_I
g%\L&}Jd
publicvoid persist(finalObject entity){ `6Hf&u<
getHibernateTemplate().save(entity); 97!5Q~I
} xl]
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publicvoid update(finalObject entity){ Eark)
getHibernateTemplate().update(entity); gyus8#s T
} t(?<#KUB-
7+XM3
publicvoid delete(finalObject entity){ Lko`F$5X
getHibernateTemplate().delete(entity); p|VcMxT9-
} 1D{#rA.X
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publicObject load(finalClass entity, Iql5T#K+
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finalSerializable id){ |E|6=%^
return getHibernateTemplate().load >oqZ !V5[
|9,UaA
(entity, id); t26ij`V
} ;f%|3-q1[
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publicObject get(finalClass entity, h<3p8eB
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finalSerializable id){ e4.&aIC[
return getHibernateTemplate().get 6
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Do;#NLrWb
(entity, id); yJD>ny
} y1,5$0@G
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publicList findAll(finalClass entity){ h>3H7n.
return getHibernateTemplate().find("from Hj~O49%j&
OM!=ViN(=
" + entity.getName()); I;j3*lV_
} SrZ50Se
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publicList findByNamedQuery(finalString 25em[Q:
s~$zWx@v
namedQuery){ 9S1#Lr`r
return getHibernateTemplate :p-Y7CSSu
r95zP]T
().findByNamedQuery(namedQuery); ] !Zty[
} *K)0UKBr
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publicList findByNamedQuery(finalString query, l)8sw=
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finalObject parameter){ rYGRz#:~+
return getHibernateTemplate ")M;+<c"l
IJPgFZ7
().findByNamedQuery(query, parameter); zilaP)5x6
} OoaY
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publicList findByNamedQuery(finalString query, o#e7,O
iz`jDa Q|1
finalObject[] parameters){ rJ(OAKnY
return getHibernateTemplate YzV(nEW
}1>atgq]w
().findByNamedQuery(query, parameters); \_ -DyD#3
} 3w'W~
0<&M?^
publicList find(finalString query){ `d*b]2
return getHibernateTemplate().find 263*: Y
},PBqWe
(query); ragSy8M
} NI\H
\#bJ
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publicList find(finalString query, finalObject p7UTqKi
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parameter){ v3^t/[e~:
return getHibernateTemplate().find :t>Q:mX(N
,}<RrUfD
(query, parameter); Z| L2oce
} .)`-Hkxa
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public PaginationSupport findPageByCriteria Jvj=I82
1S*P"8N}0h
(final DetachedCriteria detachedCriteria){ XU-*[\K
return findPageByCriteria ~:Ixmqi}R
o<J5!
(detachedCriteria, PaginationSupport.PAGESIZE, 0); xt))]aH
} wlVvxX3%
[q$e6JwAt
public PaginationSupport findPageByCriteria ;+/NjC1
hVZo"XUb
(final DetachedCriteria detachedCriteria, finalint 0n5!B..m}
)*
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startIndex){ 4NUNOv`[{
return findPageByCriteria VN+\>j-
NL-_#N$
(detachedCriteria, PaginationSupport.PAGESIZE, J)huy\>,
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startIndex); ?cxr%`E
} H:Lt$
' =}pxyg
public PaginationSupport findPageByCriteria l0#4Fma
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(final DetachedCriteria detachedCriteria, finalint ~oFh>9u
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pageSize, 0BDoBR
finalint startIndex){ {? 2;0}3?;
return(PaginationSupport) >KHp-|0pv
w&C1=v -h
getHibernateTemplate().execute(new HibernateCallback(){ :iEA UM
publicObject doInHibernate .FJj
@it/$>R^)
(Session session)throws HibernateException { GoL|iNW`
Criteria criteria = Z>h{`
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detachedCriteria.getExecutableCriteria(session); ki4Xp'IK
int totalCount = N-Z^G<[q.
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((Integer) criteria.setProjection(Projections.rowCount o"4E+1qwM
!"%S#nrL$
()).uniqueResult()).intValue(); j"0rkN3$J
criteria.setProjection \H[Yyp4
N5ci};?
(null); Onyh1
List items = |C4o zl=O?
JeL~]F
criteria.setFirstResult(startIndex).setMaxResults `xGT_0&ck
py.!%vIOQ
(pageSize).list(); ;tXY =
PaginationSupport ps = "G@E6{/
p $XnOh
new PaginationSupport(items, totalCount, pageSize, d96fjj~
IG&B2*
startIndex); _trpXkQp
return ps; :S#i9# aB
} ] .`_,
IO
}, true); <oQ6 Z X
} IBDVFA
03C .Xh=!
public List findAllByCriteria(final "5y<G:$+~
~Z7)x7
z
DetachedCriteria detachedCriteria){ 4NJVW+:2
return(List) getHibernateTemplate sc9]sIb
/RMer
Xj
().execute(new HibernateCallback(){ 0+rW;-_(
publicObject doInHibernate =8@RKG`>;
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(Session session)throws HibernateException { 16L"^EYq
Criteria criteria = URk$}_39
+<z7ds{Z
detachedCriteria.getExecutableCriteria(session); 8z?$t-D O
return criteria.list(); 8pd&3G+
} T:Bzz)2/
}, true); :bI,rEW#_
} G%Y*q(VrEu
s
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public int getCountByCriteria(final + 2OZJVJ
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DetachedCriteria detachedCriteria){ 1R*1BStc
Integer count = (Integer) $f9 ,##/
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getHibernateTemplate().execute(new HibernateCallback(){ f]hBPkZ6
publicObject doInHibernate 2lF WW(
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(Session session)throws HibernateException { .iN-4"_j1
Criteria criteria = e<kpcF5{\
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detachedCriteria.getExecutableCriteria(session); N!]PIWnC
return JATS6-Lz`
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criteria.setProjection(Projections.rowCount 1<;\6sg
| h
()).uniqueResult(); XC
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}
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}, true); X>3iYDe
return count.intValue(); `^?}s-H+
} )r-T=
} }_Tt1iai*
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用户在web层构造查询条件detachedCriteria,和可选的 VFQq`!*i
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startIndex,调用业务bean的相应findByCriteria方法,返回一个 d;;>4}XJ]
7qCJ]%)b6
PaginationSupport的实例ps。 |Ba4 G`
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ps.getItems()得到已分页好的结果集 v!WU |=u
ps.getIndexes()得到分页索引的数组 jydp4ek_n
ps.getTotalCount()得到总结果数 ls8olLM>
ps.getStartIndex()当前分页索引 ;u4@iN}p
ps.getNextIndex()下一页索引 jx^|2
ps.getPreviousIndex()上一页索引 DLwC5Iir
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连续看了两篇robbin有关DetachedCriteria的介绍,感觉真的不错 =:t@;y
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,尤其是上面的示例代码,让我着实觉得该对我原来的分页查询做 Pn'QOVy
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一下代码重构了。 .FfwY 'V
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我把原本我的做法也提供出来供大家讨论吧: y9l#;<b
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首先,为了实现分页查询,我封装了一个Page类: 3{N p 9y.
java代码: rf1wS*uU+
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/*Created on 2005-4-14*/ ,d9%Ce.$2
package org.flyware.util.page; 1C5kS[!
qaCi)f!Dl
/** rR),~ @]sL
* @author Joa eR#gG^o8
* ?3B t;<^
*/ a<a&63
publicclass Page { E.7AbHph0
r{Qs9
/** imply if the page has previous page */ Mipm&5R
privateboolean hasPrePage; U5@TaGbx
S*2L4Uj`|
/** imply if the page has next page */ 9TbS>o
privateboolean hasNextPage; :FKYYH\
thlpj*|
/** the number of every page */ teQaHe#
privateint everyPage; .g(\B
Pq[0vZ_}dN
/** the total page number */ hy!'Q>[`
privateint totalPage; =
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o3\SO
/** the number of current page */ u~naVX\3b
privateint currentPage; 84hi, S5P
>[E|p6jgT
/** the begin index of the records by the current ei|*s+OZu
8;+Hou
query */ _!$Up
privateint beginIndex; Z;"4$@|qE
'
q=NTP
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/** The default constructor */ }v'PY/d.
public Page(){ a@S4IoBg%
#(26t _a
} ?hry=I(7r
xsY>{/C
/** construct the page by everyPage Nw3I
* @param everyPage mvL0F%\.\
* */ +s*l#'Q
public Page(int everyPage){ `DWi4y7
this.everyPage = everyPage; 5 vu_D^Q
} [#P`_hx
=?`y(k4a
/** The whole constructor */ Nak'g/uP>
public Page(boolean hasPrePage, boolean hasNextPage, DO1N`7@o
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int everyPage, int totalPage, C9z~)aL}7
int currentPage, int beginIndex){ ~Hyyq-
this.hasPrePage = hasPrePage; vhE}{ED
this.hasNextPage = hasNextPage; p0y0T|H^
this.everyPage = everyPage; m|e*Jc
this.totalPage = totalPage; G\,A> mT/P
this.currentPage = currentPage; uz#eO|z@o
this.beginIndex = beginIndex; ;*37ta
} q _T?G e
{Y@-*pL]
/** tmY-m,U
* @return B;D:9K
* Returns the beginIndex. . ;ea]_Z
*/ nX.s h
publicint getBeginIndex(){ dx?njR
return beginIndex; r3BDq
} ~D`oP/6
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/** t\|K"
* @param beginIndex asmW
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* The beginIndex to set. thZ@BrO#
*/ d'x<F[`O
publicvoid setBeginIndex(int beginIndex){ "e7$q&R
|
this.beginIndex = beginIndex; F)<G]i8n~
} h2/1S{/n]
hOrk^iYN=
/** +k(3+b$S-
* @return )R
a/
* Returns the currentPage. RwE*0 T
*/ Cf1wM:K|8
publicint getCurrentPage(){ SFk11
return currentPage; `9Q,=D+
} \Zz= 4
j
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/** lA
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* @param currentPage x}8T[
* The currentPage to set. sKG~<8M}
*/ i37a}.;
publicvoid setCurrentPage(int currentPage){ ]stLC; nI
this.currentPage = currentPage; g`5`KU|
} Uc4L|:
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/** @IyH(J],h
* @return }^Ua
* Returns the everyPage. <{z3p:\
*/ Lugk`NUvF
publicint getEveryPage(){ Eztz~oFo
return everyPage; E_gDwWot
} LN3dp?;_{
divZJc
/** #u2&8-Gh
* @param everyPage .jGsO0
* The everyPage to set. * /Ry6Yu
*/
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publicvoid setEveryPage(int everyPage){ !wR{Y[Yu
this.everyPage = everyPage; .L(j@I t
} 18w^7!F?~u
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&S;_
/** SeJFZ0p
* @return k4AE`[UE
* Returns the hasNextPage. I }W-5%
*/ KutgW#+40
publicboolean getHasNextPage(){ :
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return hasNextPage; I9G*iu=U
} /&!d
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/** R#Nd|f<
* @param hasNextPage oQjB&0k4
* The hasNextPage to set. &_^*rD~
*/ @Jn:!8U0
publicvoid setHasNextPage(boolean hasNextPage){ w KMk|y>
this.hasNextPage = hasNextPage; y[5P<:&s
} Ccd7|L1
vyx\N{
/** Lv5
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* @return eN?P) ,
* Returns the hasPrePage. O\8|niW|
*/ !%\To(r[
publicboolean getHasPrePage(){ rs<&x(=Hv
return hasPrePage; \gzwsT2&
} Rd1ku=
hy&Hl
/** z9kX`M+
* @param hasPrePage pA,EUh|H
* The hasPrePage to set. uj1E*
98m
*/ e}4^N1'd/
publicvoid setHasPrePage(boolean hasPrePage){ .5CELtR
this.hasPrePage = hasPrePage; #M9D"
<pn}
} #m$% S%s
K,,@',
/** ,JBw$C
* @return Returns the totalPage. T[[
* 8OtUY}R
*/ WT!\X["FI$
publicint getTotalPage(){ |%cO"d^ri
return totalPage; O2/w:zOg'
} aE cg_es
g*c\'~f;
/** /uz5V/i0
* @param totalPage ?N?pe}
* The totalPage to set. pr,1Wp0l
*/ %iS]+Sa.K
publicvoid setTotalPage(int totalPage){ (*WZsfk>/<
this.totalPage = totalPage; wukos5
} ?G>TaTiK#
#bZ=R
} w~KBk)!*
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-GWzMBS S
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@N_H]6z4
上面的这个Page类对象只是一个完整的Page描述,接下来我写了一 od's1'cR
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个PageUtil,负责对Page对象进行构造: Aag)c~D
java代码: 2hC$"Dfp
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R}6la.mQ
/*Created on 2005-4-14*/ Tocdh.H|
package org.flyware.util.page; n_&)VF#n(
%s :
import org.apache.commons.logging.Log; A-Pwi.$
import org.apache.commons.logging.LogFactory; 2Yd~v|
O*/-I
pM
/** GJt9hDM$0
* @author Joa 3N*C]
* NE%yv,B
*/ (Dh;=xG
publicclass PageUtil { S!!\!w>N
2/4x]i
H*
privatestaticfinal Log logger = LogFactory.getLog .'mC3E+$
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(PageUtil.class); .-~%w
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p~
/** -&D6w9w
* Use the origin page to create a new page f#Cdx"
* @param page <\>ak7m
* @param totalRecords RYJc>
* @return SVWSO
*/ :O+b4R+
publicstatic Page createPage(Page page, int rkc%S5we
54cgX)E[x
totalRecords){ sH,)e'0
return createPage(page.getEveryPage(), {ZEXlNPww
Dlf=N$BL7d
page.getCurrentPage(), totalRecords); 5
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} ZV4'
|q
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/** (C|V-}/*m
* the basic page utils not including exception "<$vU_
t}+c/ C%b=
handler !,!tNs1 K
* @param everyPage by<@Zwtf
* @param currentPage HF[%/Tu
* @param totalRecords "57G@NC{n
* @return page n >PM_W
*/ poFjhq
/#(
publicstatic Page createPage(int everyPage, int PxD}j
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currentPage, int totalRecords){ J3S+| x h~
everyPage = getEveryPage(everyPage); -?` l<y(
currentPage = getCurrentPage(currentPage); |8{iIvi/
int beginIndex = getBeginIndex(everyPage, FH(+7Lz4;
~EkGG
.
currentPage); 9+Bq00-Z$
int totalPage = getTotalPage(everyPage, Prx s2 i 8
kR?n%`&k
totalRecords); cD@lorj
boolean hasNextPage = hasNextPage(currentPage, Y8'_5?+ 0
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totalPage); g@f/OsR76
boolean hasPrePage = hasPrePage(currentPage); N%E2BJ?
G*p.JsZP
returnnew Page(hasPrePage, hasNextPage, O|zmDp8a+
everyPage, totalPage, ?ML<o>OKg
currentPage, /M `y LI
,5uDEXpt{
beginIndex); 8vo7~6yy
} |RXC;zt9s
v$/i5kcWx
privatestaticint getEveryPage(int everyPage){ >Mw =}g@P
return everyPage == 0 ? 10 : everyPage; #f;1f8yrN
} > BCX%<&
grAL4
privatestaticint getCurrentPage(int currentPage){ r74w[6(
return currentPage == 0 ? 1 : currentPage; s(Bi&C\
} 0MGK3o)
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privatestaticint getBeginIndex(int everyPage, int .h^Ld,Chj
,8?*U]}
currentPage){ &?sjeC_
return(currentPage - 1) * everyPage; usf(U>
} -vAG5x/ ,
!O_^Rn+<2
privatestaticint getTotalPage(int everyPage, int >8t[EsW/
&`2*6
)qa
totalRecords){ [;8fL
int totalPage = 0; Xb
1 ^Oj
#N}}8RL
if(totalRecords % everyPage == 0) sswAI|6ou
totalPage = totalRecords / everyPage; 5g7}A`
else 2DdLqZY#
totalPage = totalRecords / everyPage + 1 ; Cms"OkN
8^i,M^f^{
return totalPage; S9055`v5
} )X$n'E
=DwH*U/YR
privatestaticboolean hasPrePage(int currentPage){ tO3B_zC
return currentPage == 1 ? false : true; "z4E|s
} yE{UV>ry
4zbV' ]
privatestaticboolean hasNextPage(int currentPage, io_64K+K
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int totalPage){ 9 NSYrIQ"
return currentPage == totalPage || totalPage == gipRVd*TA
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[0k
0 ? false : true; w*@Z-'(j
} Z9bPj8d
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} ,{t!->K
4HmRsOl
1&E&8In]$r
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kr
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上面的这两个对象与具体的业务逻辑无关,可以独立和抽象。 .W:], 5e
<rxem(PPu
面对一个具体的业务逻辑:分页查询出User,每页10个结果。具体 1H@F>}DP
$R36`wk
做法如下: `o'sp9_3
1. 编写一个通用的结果存储类Result,这个类包含一个Page对象 ;%9ZL[-
[/]3:|
的信息,和一个结果集List: !Xce iQu
java代码: J1MnkxJmpQ
#R|4(HlL
b~echOj
/*Created on 2005-6-13*/ +Q&@2 oY"
package com.adt.bo; 1h{_v!X
X)5O@"4 ?
import java.util.List; mz'8
n&&y\?n
import org.flyware.util.page.Page; ?id^v 7d
]TN}`]
/** Q&{5.}L
* @author Joa {'C74s
*/ cn{l
%6K
publicclass Result { Gl9 a5b
"$9ZkADO
private Page page; e#{L~3
0C_Qp% Z
private List content; V^5 t~)#46
Cvy;O~)
/** Id1[}B-T
* The default constructor /m:}rD
*/ 2N#L'v@g=+
public Result(){ T3 Fh7S /
super(); :6{HFMf"
} ]B[Qdn
=B2=UF
/** 2YQ$hL ~
* The constructor using fields #{sb>^BF
* I`1=VC]^8
* @param page O[5ti=W
* @param content @^@-A\7[KO
*/ .quc i(D
public Result(Page page, List content){ cd#TKmh7re
this.page = page; -`o:W?V$u
this.content = content; X_2I4Jz]6
} ['<rfK
7#QH4$@1P
/** nK$m:=
* @return Returns the content. e{/\znBS%
*/ Joj8'
publicList getContent(){ *z~Y *Q0
return content; p6*D^-
} l71\II
C: cu1Y9
/** =?hlgQ
* @return Returns the page. #'oKkrl
*/ [g_@<?zg
public Page getPage(){ ]2'~e,"O
return page; TB\CSXb
} .X9^ A,9
3ji#"cX
/**
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* @param content 5+J/Qm8{bb
* The content to set. A`Nb"N$H13
*/ 4g9VE;Gd
public void setContent(List content){ 6(=:j"w0
this.content = content; *V}}3Degh
} 8wd2\J,]
gS ]'^Sr
/** dewu@
* @param page # L R[6l
* The page to set. ;.Y`T/eWS
*/ Qn7 e6u@V
publicvoid setPage(Page page){ XDF",N)
this.page = page; ohl%<FqS
} @lI/g
} ORTM[cL
MDpXth7
"%Ak[04'
%JZIg!
$) $sApB
2. 编写业务逻辑接口,并实现它(UserManager, #S5vX<"9
s*@.qN
UserManagerImpl) w;"'l]W
java代码: f &|SGD*
5P4>xv[
CT : ac64
/*Created on 2005-7-15*/ |bh:x{h
package com.adt.service; -e ya$C
4^5s\f B
import net.sf.hibernate.HibernateException; {+MMqJCa
\BDNF<_
import org.flyware.util.page.Page; >=bO@)[
li[g =A,
import com.adt.bo.Result; u/AN|
y
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/** In
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* @author Joa &'R]oeag
*/ K67x.P Z
publicinterface UserManager { Onl:eG;@
mP-+];gg
public Result listUser(Page page)throws Xo,BuK&G
-mXEbsm
HibernateException; %`~8j H@
1JM~Ls%Z
} Y9u2:y!LdL
S}+n\pyQ
LX8vVj8K
cX2b:
g8C+j6uR0
java代码: 0|cQx
VJb
83h6>D b
"^\ 4xI
/*Created on 2005-7-15*/ D 6(w}W
package com.adt.service.impl; 6Yklaq5
wo/H:3^N
import java.util.List; `is6\RH
!tVV +vT#
import net.sf.hibernate.HibernateException; 7]Z*]GRX
h1"#DnK7
import org.flyware.util.page.Page; 'ySWf,Q^
import org.flyware.util.page.PageUtil; 6Z3v]X
,J[sg7vcv
import com.adt.bo.Result; X'5te0v`3
import com.adt.dao.UserDAO; Z7(hW,60
import com.adt.exception.ObjectNotFoundException; g+f{I'j
import com.adt.service.UserManager; wL*z+>5
.{6TX"M
/** kys?%Y1
* @author Joa :%Bo)0a9
*/ xKxWtZ0
publicclass UserManagerImpl implements UserManager { u5lj+?
p7z#4 GW
private UserDAO userDAO; ),n?"
Yy&0b(m U
/** 2$jY_{B+x
* @param userDAO The userDAO to set. ZnQnv@{8l
*/ 6Cibc.vt
publicvoid setUserDAO(UserDAO userDAO){ }MoCUN)I
this.userDAO = userDAO; 4m~\S)ad
} Axr'zc
!nu#r$K(
/* (non-Javadoc) ' _N >
* @see com.adt.service.UserManager#listUser )/BKN` ,
1vobfZ-w9
(org.flyware.util.page.Page) Y}0 - &
*/ /%.K`BMN
public Result listUser(Page page)throws Y.-i ;Mmu
N@k:kI
HibernateException, ObjectNotFoundException { U-k6ZV3&8
int totalRecords = userDAO.getUserCount(); o;"!#Z 1SJ
if(totalRecords == 0) *d@}'De{8
throw new ObjectNotFoundException 5ewQjwW0
Ouj5NL
("userNotExist"); ;$86.2S>B
page = PageUtil.createPage(page, totalRecords); 9AS,-5;XQ
List users = userDAO.getUserByPage(page); ,7eN m>$
returnnew Result(page, users); a+MC[aFr
} TiH(HW|:
$u>^A<TBN
} U\ 51j
p{.EFa>H
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