Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 %\Mo-Ow!\
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 }:*]aL<7_
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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 \qK&q
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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 :+|Z@KB
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分页支持类: 4^OY
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java代码: p >t#@Eu|
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package com.javaeye.common.util; @\P;W(m.i
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import java.util.List; M$8^91%4B
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publicclass PaginationSupport { tWa)_y
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publicfinalstaticint PAGESIZE = 30; X~,aNRy
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privateint pageSize = PAGESIZE; Q=20IQp
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privateList items; jc f #6
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privateint totalCount; c[1oww
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privateint[] indexes = newint[0]; !*. -`$x
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privateint startIndex = 0; [ $n_6
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public PaginationSupport(List items, int zY!j:FT1HY
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totalCount){ vVe';|8v
setPageSize(PAGESIZE); Ab"@714@
setTotalCount(totalCount); xzZ38xIhV
setItems(items); o;R2p $
setStartIndex(0); hL;(C)(
} o,8TDg
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public PaginationSupport(List items, int in- HUG
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totalCount, int startIndex){ zZ323pq
setPageSize(PAGESIZE); ouFYvtF g
setTotalCount(totalCount); ]cMqahaY
setItems(items); f-n1I^|
setStartIndex(startIndex); *8_wYYH
} bNNr]h8y-
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public PaginationSupport(List items, int os={PQRD
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totalCount, int pageSize, int startIndex){ }$Tl ?BRpU
setPageSize(pageSize); W_8wed:b
setTotalCount(totalCount); {|:;]T"y
setItems(items); 'd$P`Vw:
setStartIndex(startIndex); B1C-J/J
} nd1+"-,q
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publicList getItems(){ [t@Mn
return items; wlk4*4dKn
} L(-b@Joh
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publicvoid setItems(List items){ ssRbhlD/*1
this.items = items; v,{yU\)
} Ww%=1M]e-
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publicint getPageSize(){ OAkZKG|
return pageSize; ~h85BF5
} g8xQ|px
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publicvoid setPageSize(int pageSize){ VAf1 " )pC
this.pageSize = pageSize; Y
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} z hRB,1iG
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publicint getTotalCount(){ Slher0.Y
return totalCount; A}N?/{y)G
} SY^t} A7:/
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publicvoid setTotalCount(int totalCount){ P5nO78
if(totalCount > 0){ ime\f*Fg
this.totalCount = totalCount; ua]o6GlO
int count = totalCount / _EMwm&!
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pageSize; \uC15s<
if(totalCount % pageSize > 0) u!X|A`o5i
count++; qHrA%k^!2O
indexes = newint[count]; DSk/q-'u
for(int i = 0; i < count; i++){ F,dx2ZPIs?
indexes = pageSize * 5^lxj~ F
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} K3;nY}\>
}else{ sOJQ,"sB
this.totalCount = 0; \$\ENQ;Nk
} "*5hiTr8+
} dA0.v+Foz"
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publicint[] getIndexes(){ o.G!7
return indexes; <|+Ex
} $yYO_ZBiy
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publicvoid setIndexes(int[] indexes){ e<h~o!za
this.indexes = indexes; K4;'/cS
} An"</;HU
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publicint getStartIndex(){ yXF?H"h(
return startIndex; zN@}
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} %i-c0|,T4
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publicvoid setStartIndex(int startIndex){ r{ef .^&:
if(totalCount <= 0) ReI/]#Us
this.startIndex = 0; Hp|_6hO 2
elseif(startIndex >= totalCount) r1LViK
this.startIndex = indexes fhp<oe>D
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[indexes.length - 1]; M|qteo
elseif(startIndex < 0) H{k^S\K
this.startIndex = 0; Z2='o_c
else{ O0No'LVu
this.startIndex = indexes "zRoU$X
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[startIndex / pageSize]; k"]dK,,
} _/!y)&4"
} ;z:UN}
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publicint getNextIndex(){ ^8Q62
int nextIndex = getStartIndex() + G *;a^]-
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pageSize; ;Q[mL(1:
if(nextIndex >= totalCount) Upd3-2kr&J
return getStartIndex(); #K Xa&C
else ;b(p=\i
return nextIndex; 8C~]yd
} MP 2~;T}~
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publicint getPreviousIndex(){ :8+Ni d)
int previousIndex = getStartIndex() -
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pageSize; #w-xBM
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if(previousIndex < 0) tAte)/0C
return0; p)3U7"q
else @u%_1
return previousIndex; EC8b=B<DE
} .dQQoyR+O
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} WjwLM2<nK7
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抽象业务类 $.v5~UGb{\
java代码: $K'|0
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/** C[Dav&=^F
* Created on 2005-7-12 aj,T)oDbt6
*/ I=9!Rs(QF
package com.javaeye.common.business; +d!v}aJ
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import java.io.Serializable; .h5[Q/*h
import java.util.List; .]7Qu;L
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import org.hibernate.Criteria; h!:~f-@j4
import org.hibernate.HibernateException; ]U7KLUY>:
import org.hibernate.Session; q)vplV1A
import org.hibernate.criterion.DetachedCriteria; sx51X^d
import org.hibernate.criterion.Projections; "=za??\K}
import K/=_b<
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org.springframework.orm.hibernate3.HibernateCallback;
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import 15o?{=b[
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org.springframework.orm.hibernate3.support.HibernateDaoS -s$F&\5by
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upport; 0,rTdjH7
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import com.javaeye.common.util.PaginationSupport; &0(
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public abstract class AbstractManager extends 1YJC{bO
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HibernateDaoSupport { !o+_T?
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privateboolean cacheQueries = false; |7pR)KH3
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privateString queryCacheRegion; ]&{ ci
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publicvoid setCacheQueries(boolean Kmv+1T0,
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cacheQueries){ zC:wNz@zK
this.cacheQueries = cacheQueries; ^e>Wo7r
} 4bEf
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publicvoid setQueryCacheRegion(String fH?ha
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queryCacheRegion){ -"[<ek
this.queryCacheRegion = A4?+T+#d
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queryCacheRegion; WJ9cZL
} ^3FE\V/=
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publicvoid save(finalObject entity){ -TOI c%
getHibernateTemplate().save(entity); [kgdv6E
} (%:>T Q(
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publicvoid persist(finalObject entity){ Q\,o:ZU_
getHibernateTemplate().save(entity); TbF4/T1b
} k` (jkbEZ
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publicvoid update(finalObject entity){ V$rlA'+1v
getHibernateTemplate().update(entity); JQ-gn^tsy
} 1G'`2ATF*
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publicvoid delete(finalObject entity){ ~E^,=4
getHibernateTemplate().delete(entity); U"4?9.
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} !'*csg
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publicObject load(finalClass entity, r]Ff{la5
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finalSerializable id){ BiZ=${y
return getHibernateTemplate().load ([VV%ovZ
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(entity, id); b4""|P?L
} q;wLa#4)J
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publicObject get(finalClass entity, xN@Pz)yo
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finalSerializable id){ c$QX)V
return getHibernateTemplate().get Vax^8 -
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(entity, id); s{4 \xAS>
} :aIN9;
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publicList findAll(finalClass entity){ :g\rQazxO
return getHibernateTemplate().find("from LR,7,DH$9'
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" + entity.getName()); lw(e3j
} U70]!EaT
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publicList findByNamedQuery(finalString [|3>MZ2/
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namedQuery){ nD2,!71
return getHibernateTemplate vkRi5!bR
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().findByNamedQuery(namedQuery); j9/-"dTL
} M-uMZQe
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publicList findByNamedQuery(finalString query, iYbX
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finalObject parameter){ HOp-P8z
return getHibernateTemplate STA4 p6
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().findByNamedQuery(query, parameter); !"TZ:"VZU
} -gz0md|Y
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publicList findByNamedQuery(finalString query, D8#
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finalObject[] parameters){ Gj /3kS~@
return getHibernateTemplate jUqy8q&
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().findByNamedQuery(query, parameters); PZD>U)M
} ib0g3p-Lc
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publicList find(finalString query){ {hO`6mr&t
return getHibernateTemplate().find t=#Pya
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(query); 3v!~ cC~cI
} VRW]a
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publicList find(finalString query, finalObject HZ*0QgW\(5
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parameter){ SgE/!+{
return getHibernateTemplate().find =BZ?- mIU
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(query, parameter); #m8sK(#lo
} EC?Efc+O
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public PaginationSupport findPageByCriteria Kt.~aaG_
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(final DetachedCriteria detachedCriteria){ sxED7,A
return findPageByCriteria 0D(cXzQP
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); sst,dA V$
} HpexH{.u)
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public PaginationSupport findPageByCriteria t^tCA -
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(final DetachedCriteria detachedCriteria, finalint
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startIndex){ !@
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return findPageByCriteria nD,{3B#
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(detachedCriteria, PaginationSupport.PAGESIZE, cVq}c?
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startIndex); 9|S` ub'
} a1MFjmq
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public PaginationSupport findPageByCriteria czBi Dk4
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(final DetachedCriteria detachedCriteria, finalint #cwCocw
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pageSize, q?~Rnv
finalint startIndex){ 3#<*k>1G?
return(PaginationSupport) /axTh
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getHibernateTemplate().execute(new HibernateCallback(){ Z]-WFU_
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publicObject doInHibernate s!6=|SS7
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(Session session)throws HibernateException { xT F=Y_
Criteria criteria = hPufzhT
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detachedCriteria.getExecutableCriteria(session); 27#8dV?
int totalCount = h#3m4<w(9
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((Integer) criteria.setProjection(Projections.rowCount 3^G96]E
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()).uniqueResult()).intValue(); g<[rH%\6fg
criteria.setProjection dA#{Cn;
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(null); v29G:YQe
List items = "~p+0Xws9
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criteria.setFirstResult(startIndex).setMaxResults ZcZ;$*
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(pageSize).list(); IF?xnu
PaginationSupport ps = 5iWe-xQ>
{:Vf0Mhb
new PaginationSupport(items, totalCount, pageSize, =p\Xy*
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startIndex); 6d{j0?mM
return ps; ?TuI:dC
} H(\V+@~>AD
}, true); FWTx&Ip
} MtG_9-
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public List findAllByCriteria(final AQci,j"
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DetachedCriteria detachedCriteria){ }~*rx7p
return(List) getHibernateTemplate ~+m,im8}
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().execute(new HibernateCallback(){ 6D9o08
publicObject doInHibernate hmGdjw t$
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(Session session)throws HibernateException { a8h]n:!
Criteria criteria = G6Q4-kcK
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detachedCriteria.getExecutableCriteria(session); r69WD
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return criteria.list(); cTj~lO6
} 5V|tXsy:
}, true); *j<@yG2\gP
} O:u%7V/
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public int getCountByCriteria(final
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