Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 {m~.'DU
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 A}pmr
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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 =B<>H$
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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 iz!E1(z(
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分页支持类: S7]\tw_L)
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java代码: L)W1bW}
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package com.javaeye.common.util; ZDuP|" ^
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import java.util.List; jA_wOR7$
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publicclass PaginationSupport { /RU'~(
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publicfinalstaticint PAGESIZE = 30; GSo&$T;B6
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privateint pageSize = PAGESIZE; HYm
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privateList items; 81Ixs
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privateint totalCount; +c;/hM<IX.
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privateint[] indexes = newint[0]; &c!d}pU}
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privateint startIndex = 0; RO.GD$ 3n
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public PaginationSupport(List items, int ,Vb;2
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totalCount){ WA);Z=
setPageSize(PAGESIZE); U3ygFW%
setTotalCount(totalCount); 3J\NkaSR
setItems(items); ^RN1?dXA
setStartIndex(0); 6r"PtHr
} rWN#QL()*
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public PaginationSupport(List items, int WIwbf |\
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totalCount, int startIndex){ E)(`Z0
setPageSize(PAGESIZE); ] o!#]]
setTotalCount(totalCount); j/zD`ydj
setItems(items); `_2#t1`u
setStartIndex(startIndex); +MQvq\%tG
} 7f4R5c
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public PaginationSupport(List items, int >40B
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totalCount, int pageSize, int startIndex){ ~"l
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setPageSize(pageSize); tVx.J'"Y
setTotalCount(totalCount); Q*TxjE7K
setItems(items); D3^[OHi~a
setStartIndex(startIndex); h;vD"!gP
} ?Az pb}#
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publicList getItems(){ I3Sl>e(Z
return items; 1fbd/-h
} fgxsC7P$
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publicvoid setItems(List items){ ixJUq o
this.items = items; -_jV.`t
} inBd.%Yr
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publicint getPageSize(){ ~qNpPIrGr
return pageSize; hp(n;(OR
} LvpHR#K)F5
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publicvoid setPageSize(int pageSize){ wAHb5>!
this.pageSize = pageSize; syh0E=If_
} |-7<?aw"
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publicint getTotalCount(){ 0N
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return totalCount; +$
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publicvoid setTotalCount(int totalCount){ l%w7N9
if(totalCount > 0){ z:fhq:R(
this.totalCount = totalCount; U_8I$v-~
int count = totalCount / }bnkTC
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pageSize; pH~JPNng
if(totalCount % pageSize > 0) gRqz8UI
count++; {W4t]Ff
indexes = newint[count]; ^#t<ILUa
for(int i = 0; i < count; i++){ SQ1&n;M}f
indexes = pageSize * sIy$}_
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} r=[}7N
}else{ 9=}/t9k
this.totalCount = 0; /6.b>|zF
} JWdG?[$
} /nmfp&@
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publicint[] getIndexes(){ ut,"[+J
return indexes; L%8"d6
} plIx""a^h
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publicvoid setIndexes(int[] indexes){ p-6.:y
this.indexes = indexes; iLI]aZ
}
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publicint getStartIndex(){ >WEg8'#O
return startIndex; Qv=Z
} vVf!XZF
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publicvoid setStartIndex(int startIndex){ 5(|ud)v
if(totalCount <= 0) HWU{521
this.startIndex = 0; ZT8j9zs
elseif(startIndex >= totalCount) Oxvw`a#
this.startIndex = indexes A&7jE:Ew
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[indexes.length - 1]; :)yM9^<D
elseif(startIndex < 0) j w462h
this.startIndex = 0; >k#aB.6
else{ {2Ibd i
this.startIndex = indexes ;5l|-&{@*
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[startIndex / pageSize]; 6qDD_:F
} NNdS:(
} #e=^[E-yE
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publicint getNextIndex(){ ~S6N'$^
int nextIndex = getStartIndex() + CYu8J@(\~g
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pageSize; wz#n$W3mGf
if(nextIndex >= totalCount) e+WVN5"ID>
return getStartIndex(); )5v .9N6v
else cA\W|A)
return nextIndex; ,'6GG+
} ;Vy'y
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publicint getPreviousIndex(){ Uwk|M?94
int previousIndex = getStartIndex() - D-!%L<<
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pageSize; BkeP?X
if(previousIndex < 0) F"C Yrt
return0; B;Z^.3
else BYf"l8^,
return previousIndex; T}TP.!0E
} /0uinx
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} jYF3u0
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抽象业务类 y^rg%RV
java代码: #*/h*GNMs
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/** g1|c?#fwo
* Created on 2005-7-12 UXJl;Mb
*/ MO/N*4U2
package com.javaeye.common.business; n}?G!ySg
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import java.io.Serializable; B$Z!E%a;
import java.util.List; -*2X YTe
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import org.hibernate.Criteria; x TZ5q*Hqx
import org.hibernate.HibernateException; (I.`bR
import org.hibernate.Session; >>Di
import org.hibernate.criterion.DetachedCriteria; mK-:laIL"
import org.hibernate.criterion.Projections; Hv\*F51p=
import Y ckbc6F
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org.springframework.orm.hibernate3.HibernateCallback; ]IV;>94[
import MvmP["%J4_
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org.springframework.orm.hibernate3.support.HibernateDaoS R2`g?5v
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upport; A~V\r<N
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import com.javaeye.common.util.PaginationSupport; Se8y-AL6x>
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public abstract class AbstractManager extends K;y\&'E
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HibernateDaoSupport { )M 0O=Cl1
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privateboolean cacheQueries = false; ={'($t%|T
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privateString queryCacheRegion; !?/bK[
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publicvoid setCacheQueries(boolean bicL%I2h
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cacheQueries){ I "2FTGA
this.cacheQueries = cacheQueries; 5.#9}]
} *Mc\7D
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publicvoid setQueryCacheRegion(String nj`qV
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queryCacheRegion; pNFIO
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publicvoid save(finalObject entity){ P;LZ!I
getHibernateTemplate().save(entity); MA#!<b('
} sLp
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publicvoid persist(finalObject entity){ oJT@'{;*z
getHibernateTemplate().save(entity); B[
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} ]#.&f]6l
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publicvoid update(finalObject entity){ J)|K/W9
getHibernateTemplate().update(entity); Gx_e\fe-/
} b.*4RL
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publicvoid delete(finalObject entity){ wR4u}gb#q
getHibernateTemplate().delete(entity); j]O[I^5
} ix @rq#
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publicObject load(finalClass entity, L.[uMuUa
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finalSerializable id){ 0\nhg5]?
return getHibernateTemplate().load 5yi q#
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(entity, id); SkRQFm0a~
} m(:qZW
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publicObject get(finalClass entity, M~F2cXW
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return getHibernateTemplate().get u>6/_^iq
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(entity, id); ^>{;9lo<
} RmV/wY
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publicList findAll(finalClass entity){ 3#9r4;&
return getHibernateTemplate().find("from 7d8qs%nA
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" + entity.getName()); >1pH 91c'
} DB'KIw
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publicList findByNamedQuery(finalString 6ilC#yyp
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namedQuery){ Mv`L F
return getHibernateTemplate 7h&`BS
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().findByNamedQuery(namedQuery); `4$Qv'X*
} _m?(O /BTx
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publicList findByNamedQuery(finalString query, )u/
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finalObject parameter){ NV(4wlh)y
return getHibernateTemplate rIfGmh%H
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().findByNamedQuery(query, parameter); 3=|2Gs?ut
} #33RhJu5,
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publicList findByNamedQuery(finalString query, *([)X2A@+
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finalObject[] parameters){ lrX0c$)
return getHibernateTemplate 't?7.#,6O
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().findByNamedQuery(query, parameters); v[DbhIXU
} *[~o~e/YCb
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publicList find(finalString query){ \ j X N*A
return getHibernateTemplate().find |-Esc|J(
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(query);
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publicList find(finalString query, finalObject jo3}]KC !
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parameter){ I&fh
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(query, parameter); =>ztB w\
} <CKmMZ{
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public PaginationSupport findPageByCriteria Ar7mH4M
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(final DetachedCriteria detachedCriteria){ |}p}`Mb)a
return findPageByCriteria ~& WN)r'4y
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); Z*9]:dG:!
} , 64t
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public PaginationSupport findPageByCriteria ]F*a PV
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(final DetachedCriteria detachedCriteria, finalint 27 145
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startIndex){ fw|+7 O
return findPageByCriteria Q$h:[_v
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(detachedCriteria, PaginationSupport.PAGESIZE, 8u'O`j
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startIndex); T<e7(=
} d:<H?~
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public PaginationSupport findPageByCriteria uGUv~bE
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(final DetachedCriteria detachedCriteria, finalint ,WB_C\.#XN
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pageSize, +5t
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finalint startIndex){ 7Cd_zZ
return(PaginationSupport) X:``{!~geo
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getHibernateTemplate().execute(new HibernateCallback(){ G>w?9:V}
publicObject doInHibernate ~'NpM#A
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(Session session)throws HibernateException { k8
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Criteria criteria = ;64mf`
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detachedCriteria.getExecutableCriteria(session); 0oj{e9h
int totalCount = }\u% )uZ
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((Integer) criteria.setProjection(Projections.rowCount 9sU+IT K4
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()).uniqueResult()).intValue(); <{cNgKd9
criteria.setProjection bH\C5zt6(
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(null); %`?;V;{=
List items = ?)'
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criteria.setFirstResult(startIndex).setMaxResults ^K.u
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(pageSize).list(); 6vgBqn[
PaginationSupport ps = 5`E`Kb+@
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new PaginationSupport(items, totalCount, pageSize, &(1H!
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startIndex); IObx^N_K
return ps; _}e7L7B7g
} fzS`dL5,W
}, true); Zgg'9E
}
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public List findAllByCriteria(final &