Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 c ?(X(FQ
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 o NqIrYH'
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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 J'H}e F`
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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 k`u.:C&
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分页支持类: 4/J"}S
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java代码: =(cfo_B@K
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package com.javaeye.common.util; &o]ic(74c?
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import java.util.List; ?Tr\r1s]
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publicclass PaginationSupport { (S)jV0
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publicfinalstaticint PAGESIZE = 30; NB=!1;^J
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privateint pageSize = PAGESIZE; T_NN.Ol
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privateList items; H
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privateint totalCount; z1vSt[s
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privateint[] indexes = newint[0]; Y4j%K~lsY
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privateint startIndex = 0; hvo7T@*'
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public PaginationSupport(List items, int r0L'
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totalCount){ X*QQVj
setPageSize(PAGESIZE); g3Z"ri~!G
setTotalCount(totalCount); eX3|<Bf
setItems(items); 3@8Zy:[8<
setStartIndex(0); kl[Jt)"4@
} <#%kmYSL
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public PaginationSupport(List items, int <[Y@<
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totalCount, int startIndex){ u|EHe"V"
setPageSize(PAGESIZE); kBr?Q
setTotalCount(totalCount); vL
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setItems(items); e4<[|B!O
setStartIndex(startIndex); o)r%4YOL
} ]rMHO
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public PaginationSupport(List items, int #y>q)Ph
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totalCount, int pageSize, int startIndex){ jk9/EmV*r
setPageSize(pageSize); cOrFe;8-.
setTotalCount(totalCount); GX,)~Syw*
setItems(items); =?oYEO7
setStartIndex(startIndex); 3`U^sr:[%
} uz'MUT(68
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publicList getItems(){ *DS>#x@3*i
return items; \VAm4
} ay`A Gr
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publicvoid setItems(List items){ q)QM+4
this.items = items; >4iVVs
} /P
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publicint getPageSize(){ D\-D~G]x
return pageSize; >#EOCo
} +5xk6RP
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publicvoid setPageSize(int pageSize){ (>M?
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this.pageSize = pageSize; w6<zPrA
} F$nc9x[S
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publicint getTotalCount(){ ?v@pB>NZ
return totalCount; "*JyNwf
} i=AQ1X\s
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publicvoid setTotalCount(int totalCount){ Su*f`~G];
if(totalCount > 0){ 3\E G
this.totalCount = totalCount; '8V>:dy>
int count = totalCount / -W'T3_
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pageSize; rJw
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if(totalCount % pageSize > 0) ukwO%JAr
count++; `w
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indexes = newint[count]; Q1^kU0M }
for(int i = 0; i < count; i++){ -4LckY=]1
indexes = pageSize * " gQJeMU
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} r31)Ed$
}else{ ~tB#Q6`nB
this.totalCount = 0; 7 DW_G
} TS49{^d$
} HtAO9
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publicint[] getIndexes(){ \SyG#.$
return indexes; -APbN(Vi
} 0.z\YTZ9
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publicvoid setIndexes(int[] indexes){ ;nbbKQ]u
this.indexes = indexes; G'0JK+=o
} D0VbD" y
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publicint getStartIndex(){ [Nv)37|W
return startIndex; g\A kf
} SK t&BnW
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publicvoid setStartIndex(int startIndex){ E:ti]$$
if(totalCount <= 0) Ck>{7Gw
this.startIndex = 0; _0h)O
elseif(startIndex >= totalCount) L.Tu7+M4
this.startIndex = indexes c$b~?Mx
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[indexes.length - 1]; Y0xn}:%K
elseif(startIndex < 0) SI9PgC
this.startIndex = 0; ]CGH )4Pe
else{ 49-wFF
this.startIndex = indexes N-YCOSUu
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[startIndex / pageSize]; "a=dx|
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} 6S&OE k
} e!oL!Zg
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publicint getNextIndex(){ xV>sc;PEb
int nextIndex = getStartIndex() + 0@/C5 v
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pageSize; 'tn-o
if(nextIndex >= totalCount) UoOxGo
return getStartIndex(); g66x;2Q
else EWK?vs
return nextIndex; P\{}yd
} &h'NC%"v
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publicint getPreviousIndex(){ 5 nS}h76mZ
int previousIndex = getStartIndex() - P]<15l
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pageSize; o|Kd\<rY
if(previousIndex < 0) {VT**o
return0; "] [u
else pz ~REsx
return previousIndex; Hd89./v`:
} NEW0dF&)
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} t-?#x
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抽象业务类 W-<`Vo'
java代码: RW|Xh8.O
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/** d:JP935
* Created on 2005-7-12 wj 15Og?
*/ ()(^B}VK
package com.javaeye.common.business; 0 LQ%tn
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import java.io.Serializable; L|Bjw3K&D
import java.util.List; w-P;E!gTt
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import org.hibernate.Criteria; EqF>=5*
import org.hibernate.HibernateException; h.4FY<
import org.hibernate.Session; Nn-EtM0w
import org.hibernate.criterion.DetachedCriteria; iH>IV0
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import org.hibernate.criterion.Projections; =?[:Nj636
import f6`W(OiE
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org.springframework.orm.hibernate3.HibernateCallback; oq[r+E-]$@
import C=8IQl[^e
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org.springframework.orm.hibernate3.support.HibernateDaoS
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import com.javaeye.common.util.PaginationSupport;
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public abstract class AbstractManager extends hr`,s!0Y
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HibernateDaoSupport { dZuPR
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privateboolean cacheQueries = false; hp$1c
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privateString queryCacheRegion; ZDx1v_xr
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publicvoid setCacheQueries(boolean l._g[qa
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cacheQueries){ BMItHn].
this.cacheQueries = cacheQueries; <z8z\4Hz
} cv-;fd>'
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publicvoid setQueryCacheRegion(String aEn*vun
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queryCacheRegion){
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this.queryCacheRegion = g1I8_!}~
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queryCacheRegion; &"d
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} &Xh=bM'/%m
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publicvoid save(finalObject entity){ uoTc c|Kc
getHibernateTemplate().save(entity); KN'twPFq
} \0.!al0
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publicvoid persist(finalObject entity){ h>ZU67-
getHibernateTemplate().save(entity); =\)76xC20
} !*PX-
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publicvoid update(finalObject entity){ ubQr[/
getHibernateTemplate().update(entity); EOXuc9>G
} @./@"mR<
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publicvoid delete(finalObject entity){ eN0lJ ~
getHibernateTemplate().delete(entity); ?;GXFKy
} oF_
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publicObject load(finalClass entity, Z_s]2y1
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finalSerializable id){ lcXo>
return getHibernateTemplate().load )i[K1$x2
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(entity, id); \{1Vjo
} kS_37-;
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publicObject get(finalClass entity, ]o`FF="at
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finalSerializable id){ M+lI,j+
return getHibernateTemplate().get #J%Fi).^)
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(entity, id); &sGLm~m#
} 7G_OFD
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publicList findAll(finalClass entity){ Job&qW9W`
return getHibernateTemplate().find("from b2YOnV
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" + entity.getName()); MsA)Y
} cX5t x]
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publicList findByNamedQuery(finalString #uuNH(
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namedQuery){
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return getHibernateTemplate @fd{5 >\
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().findByNamedQuery(namedQuery); Ls NJ3oy
} /7C%m:
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publicList findByNamedQuery(finalString query, ~q{QquYV
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finalObject parameter){ n7d`J_%s
return getHibernateTemplate yj9Ad*.
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().findByNamedQuery(query, parameter); RueL~$*6.~
} XU$\.g p-
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publicList findByNamedQuery(finalString query, NjSjE_S2B8
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finalObject[] parameters){ 6
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return getHibernateTemplate {1W,-%
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().findByNamedQuery(query, parameters); K|.!)L
} .,SWa;[iB
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publicList find(finalString query){ m`8tHHF
return getHibernateTemplate().find IF|%.%I$!U
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(query); S]biN]+7s
} 9|//_4]
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publicList find(finalString query, finalObject uB35CRd
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parameter){ S;S_<GX
return getHibernateTemplate().find BU;E6s>P
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(query, parameter); q.PXO3T
} 8 9f{8B]z
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public PaginationSupport findPageByCriteria ;EfREfk
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(final DetachedCriteria detachedCriteria){ )"<:Md$7
return findPageByCriteria p\M\mK
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); - Tr*G4
} xr-v"-
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public PaginationSupport findPageByCriteria JKs&!!
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(final DetachedCriteria detachedCriteria, finalint M \3Zj(E/
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startIndex){ XJi^gT N
return findPageByCriteria h`/1JjP
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(detachedCriteria, PaginationSupport.PAGESIZE, W>`#`u
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startIndex); B!z5P"C(~
} I ?i,21:5
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public PaginationSupport findPageByCriteria X.!|#FWb+
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(final DetachedCriteria detachedCriteria, finalint z c,Q
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pageSize, }K\m.+%=d
finalint startIndex){ @60/IE{-v
return(PaginationSupport) -m>ng
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getHibernateTemplate().execute(new HibernateCallback(){ &sJ%ur+G
publicObject doInHibernate /|{~GD +A&
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(Session session)throws HibernateException { .(2ui~ed
Criteria criteria = $qj||zA
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detachedCriteria.getExecutableCriteria(session); o9uir"=
int totalCount = (.B+U'6
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((Integer) criteria.setProjection(Projections.rowCount {H%1sI
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()).uniqueResult()).intValue(); ~b.e9FhdA
criteria.setProjection S4BU !
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(null); %QrpFE5V5
List items = t.WWahNyY
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criteria.setFirstResult(startIndex).setMaxResults 6H}8^'/u
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(pageSize).list(); U49
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PaginationSupport ps = 96
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new PaginationSupport(items, totalCount, pageSize, VCUEzR0
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startIndex); ygquQhf5
return ps; h*\/{$y
} " tUF,G(<
}, true); IF$*6
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} &%4*~;o
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public List findAllByCriteria(final _l;$<]re\k
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DetachedCriteria detachedCriteria){ Bys _8x}
return(List) getHibernateTemplate @fxDe[J:
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().execute(new HibernateCallback(){ ;v^1V+1:z
publicObject doInHibernate J 4OgV?
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(Session session)throws HibernateException { h\i>4^]X.
Criteria criteria = ^w|apI~HSE
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detachedCriteria.getExecutableCriteria(session); u$?t |Ll
return criteria.list(); i'bUX=JK
} 9n#Em
}, true); K-b'jP\
} Pe_FW8e#J
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public int getCountByCriteria(final x<%V&<z1g
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DetachedCriteria detachedCriteria){ }\Mmp+<
Integer count = (Integer) b)Px
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getHibernateTemplate().execute(new HibernateCallback(){ I2PFJXp_]n
publicObject doInHibernate S*-/#j
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(Session session)throws HibernateException { +kK6G#c
Criteria criteria = 5<y pK`Kq
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detachedCriteria.getExecutableCriteria(session); !DUC#)F
return Iq[Z5k(K
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criteria.setProjection(Projections.rowCount `vFYeN;
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()).uniqueResult(); -O?}-6,_Z
} 9G@
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}, true); z_LN*u
return count.intValue(); &