Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ]P(Eo|)m
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 B'yN &3
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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 r+m8#uR
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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 gjo\gP@
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分页支持类: Q=e?G300#L
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java代码: ]PUyX8'~
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package com.javaeye.common.util; ^o,@9GTs
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import java.util.List; {y<_S]0
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publicclass PaginationSupport { "ajZ&{Z
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publicfinalstaticint PAGESIZE = 30; ? ~_%I
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privateint pageSize = PAGESIZE; ,j&o H$mW
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privateList items; ]t(g7lc}U
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privateint totalCount; ? _HTOOa
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privateint[] indexes = newint[0]; AqN(htGvx
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privateint startIndex = 0; *:YW@Gbm
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public PaginationSupport(List items, int ^gb2=gWZ<
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totalCount){ v+Mt/8
setPageSize(PAGESIZE); :FxZdE
setTotalCount(totalCount); :M=!MgD3w
setItems(items); `uzRHbJ`
setStartIndex(0); kx'6FkZPIr
} )K5~r>n&
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public PaginationSupport(List items, int dZnq 96<:|
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totalCount, int startIndex){ uX.Aq@j
setPageSize(PAGESIZE); {Ziq~{W_
setTotalCount(totalCount); X^aujK^@
setItems(items); QF%@MK0zC
setStartIndex(startIndex); &mY<e4
} _II;$_N
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public PaginationSupport(List items, int ,
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totalCount, int pageSize, int startIndex){ {?5EOp~
setPageSize(pageSize); BJW;A>@Pj
setTotalCount(totalCount); T \0e8"iZ
setItems(items); ENqJ9%sk7
setStartIndex(startIndex); f3yZx!K_Br
} {{2ZWK 6|
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publicList getItems(){ Dhef|E<
return items; #}k^g:l1
} >aa-ix
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publicvoid setItems(List items){ C
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this.items = items; Nk^#Sa?
} u!g<y
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publicint getPageSize(){ 0'L+9T5
return pageSize; i(U*<1y
} rRsLl/d
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publicvoid setPageSize(int pageSize){ @8/-^Rh*
this.pageSize = pageSize; C/]0jAAE7
} %PkJ7-/b|^
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publicint getTotalCount(){ t%8*$"~X
return totalCount; N'[^n,\(:
} `D?vmSQ
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publicvoid setTotalCount(int totalCount){ kyY tL_SD
if(totalCount > 0){ RYvS,hf6z
this.totalCount = totalCount; IClnh1=
int count = totalCount / ri\r%x
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pageSize; E-!`6
if(totalCount % pageSize > 0) 6oJ~Jdn'
count++; ZEApE+m
indexes = newint[count]; ?[VS0IBS
for(int i = 0; i < count; i++){ eb:u h!
indexes = pageSize * -y$|EOi?
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} \UK 9
}else{ L
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this.totalCount = 0; Lww0 LH
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} wcV~z:&^5
} Soop)e
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publicint[] getIndexes(){ AZtZa'hbkQ
return indexes; ~Jq<FVK
} wAy;ZNu
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publicvoid setIndexes(int[] indexes){ >gVR5o
this.indexes = indexes; srC'!I=s>8
} f#mY44:,C
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publicint getStartIndex(){ gbKms;:
return startIndex; ^*Rr x
} 'MsxZqW"~
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publicvoid setStartIndex(int startIndex){ 5GpRN
if(totalCount <= 0) ]A!Gr(FHQ
this.startIndex = 0; b]*9![_
elseif(startIndex >= totalCount) <$7*yV
this.startIndex = indexes c
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[indexes.length - 1]; YFsEuaV
elseif(startIndex < 0) m:
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this.startIndex = 0; +KD~/}C%-
else{ 4d6F4G4U
this.startIndex = indexes =u73AM}
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[startIndex / pageSize]; 5z#>>|1>#
} -*tP_=- Dg
} J^1w& 40
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publicint getNextIndex(){ WO_cT26Y
int nextIndex = getStartIndex() + &a-:ZA@
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pageSize; ZmYp!B_~
if(nextIndex >= totalCount) 9h~>7VeZ)
return getStartIndex(); A!@D }n
else P3@[x
return nextIndex; OGh bH a
} q=|>r
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publicint getPreviousIndex(){ Xt9?7J#\T
int previousIndex = getStartIndex() - %.[GR
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pageSize; eGnc6)x@C
if(previousIndex < 0) 0} HKmEM
return0; knF *~O :y
else #CVD:p
return previousIndex; "K~+T\^|k
} iVnrv`k,
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} f@>27&'WV
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抽象业务类 7uxy<#Ar
java代码: l=bB,7gL
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/** G4AX8@;U
* Created on 2005-7-12 nQg6
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package com.javaeye.common.business; /1Rm^s)2z
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import java.io.Serializable; ^K&&O{
import java.util.List; ZK_IK)g
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import org.hibernate.Criteria; qFf'RgUtP
import org.hibernate.HibernateException; TZPWMCN4
import org.hibernate.Session; 8|V6Rg A%
import org.hibernate.criterion.DetachedCriteria; [#uX{!q'
import org.hibernate.criterion.Projections; D='/-3f!F]
import 0(-'L\<>x
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org.springframework.orm.hibernate3.HibernateCallback; r~TiJ?8I
import =^=9z'u"=
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org.springframework.orm.hibernate3.support.HibernateDaoS +<@7x16
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upport; 3(6i6 vV
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import com.javaeye.common.util.PaginationSupport; /gXli)
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public abstract class AbstractManager extends 8R8J./i.K
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HibernateDaoSupport { 42tD$S5^
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privateboolean cacheQueries = false; =4+UX*&i?.
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privateString queryCacheRegion; <hQ@]2w$
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publicvoid setCacheQueries(boolean (/Z~0hA[Q
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cacheQueries){ T(7
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this.cacheQueries = cacheQueries; o<@2zhuhrx
} 6+m)
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publicvoid setQueryCacheRegion(String 0O"GI33Mg
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queryCacheRegion){ M)Tv(7
this.queryCacheRegion = 8~\Fpz|Og
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queryCacheRegion; C6CX{IA]
} @QVAsNW:O
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publicvoid save(finalObject entity){ >Mrz$
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getHibernateTemplate().save(entity); m'oVqA&
} Joq9.%7Q
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publicvoid persist(finalObject entity){ 26.iFt/:
getHibernateTemplate().save(entity); Z(*nZT,
} a%Cq?HZ7
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publicvoid update(finalObject entity){ 241YJ
getHibernateTemplate().update(entity); SU2(XP]5
} (al7/EhY
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publicvoid delete(finalObject entity){ Nki18ud#
getHibernateTemplate().delete(entity); iN+p>3w^l
} mcS/-DaN?
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publicObject load(finalClass entity, aSXoYG0\
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finalSerializable id){ 76$19
return getHibernateTemplate().load +J_A*B
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(entity, id); $vlgiJ&f
} uSM4:!8
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publicObject get(finalClass entity, BAdHGwomh
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finalSerializable id){ 6~;fj+S
return getHibernateTemplate().get a5L#c=
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(entity, id); -md2Z0^ Kc
} W q F(
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publicList findAll(finalClass entity){ |3Oe2qb
return getHibernateTemplate().find("from +7N6]pK|"
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" + entity.getName()); NVeb,Pf
} i+Ob1B@w
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publicList findByNamedQuery(finalString /=,^fCCN
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namedQuery){ V4/P
return getHibernateTemplate v?fB:[dG
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().findByNamedQuery(namedQuery); ^ylJ_lN&=1
} CH`4FR.-
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publicList findByNamedQuery(finalString query, J U}XSb
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finalObject parameter){ :4]&R9J>o
return getHibernateTemplate 7{8!IcR #
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().findByNamedQuery(query, parameter); V1xpJ
} \
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publicList findByNamedQuery(finalString query, Drk9F"J
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finalObject[] parameters){ C&zgt
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return getHibernateTemplate u?Iop/b
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().findByNamedQuery(query, parameters); o@EV>4e y
}
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publicList find(finalString query){ Rk2ZdNc\
return getHibernateTemplate().find [q9TTJ@2
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(query); B/i,QBPF]
} (.<Gde#
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publicList find(finalString query, finalObject [^1;8Tbk
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parameter){ wf6ZzG:
return getHibernateTemplate().find @>(l}5U5
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(query, parameter); ,;GWn
} q fadsVp
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public PaginationSupport findPageByCriteria Fr/8q:m&
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(final DetachedCriteria detachedCriteria){ 1p+2*c
return findPageByCriteria $T1
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 8^c|9ow
} \1aj!)
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public PaginationSupport findPageByCriteria xg. d)n
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(final DetachedCriteria detachedCriteria, finalint |~8iNcIS
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startIndex){ 8
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return findPageByCriteria ]*sXISg1
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(detachedCriteria, PaginationSupport.PAGESIZE, |Wi$@sWO
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startIndex); +]`MdOu
} _BHb0zeot
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public PaginationSupport findPageByCriteria ;=F^G?p^
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(final DetachedCriteria detachedCriteria, finalint n#,AZ&
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pageSize, 7! <cU
finalint startIndex){ Z-Bw?_e_K
return(PaginationSupport) [AE]0cO@
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getHibernateTemplate().execute(new HibernateCallback(){ 6>Lr
publicObject doInHibernate O'$0K0k3
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(Session session)throws HibernateException { hb_YdnG
Criteria criteria = G80d!*7
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detachedCriteria.getExecutableCriteria(session); !Lk|eGd*
int totalCount = DE."XSni
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((Integer) criteria.setProjection(Projections.rowCount eu^z&R!um
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()).uniqueResult()).intValue(); QmT]~4PqS
criteria.setProjection _2 }i8q:
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(null); CIj3D"
List items = 1 /7H` O?
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criteria.setFirstResult(startIndex).setMaxResults ;gK+AU
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(pageSize).list(); c5R58#XK=
PaginationSupport ps = =WFMqBh<`
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new PaginationSupport(items, totalCount, pageSize, G/N'8Q)
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startIndex); ^|>vK,q$I
return ps; 3~a!h3.f
} J@p[v3W
}, true); /NMd GKr
} BT`D|<
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public List findAllByCriteria(final |v[{k>7f
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DetachedCriteria detachedCriteria){ ;}=v|Dr&I.
return(List) getHibernateTemplate A4Q8^^byY
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().execute(new HibernateCallback(){ cl^wLC'o
publicObject doInHibernate EG@*J*|S
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(Session session)throws HibernateException { P `T&z