Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 aM YtWj
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 }No8t o
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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 -Pc6W9$
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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 _)[UartKx
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分页支持类: P7\?WN$p
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java代码: 8\Bb7*
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package com.javaeye.common.util; 3<HZ)w^B
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import java.util.List; Ui.S)\B
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publicclass PaginationSupport { Uj)Wbe[)p0
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publicfinalstaticint PAGESIZE = 30; GQ2/3kt
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privateint pageSize = PAGESIZE; nt8&Mf
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privateList items; 9qUkw&}H
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privateint totalCount; 0+F--E4
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privateint[] indexes = newint[0]; <.&84c]/&
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privateint startIndex = 0; !RSJb
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public PaginationSupport(List items, int ; Vpp1mk|
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totalCount){ wKKQAM6P1
setPageSize(PAGESIZE); P1ak>T*#2
setTotalCount(totalCount); B>g(i=E
setItems(items);
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setStartIndex(0); y/+IPR
} f+1@mGt
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public PaginationSupport(List items, int q _Z+H4
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totalCount, int startIndex){ -5JN`
setPageSize(PAGESIZE); ["[v
setTotalCount(totalCount); )]kxLf#
setItems(items); %77uc9}
setStartIndex(startIndex); d,toU I
} l=ZD&uK
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public PaginationSupport(List items, int mM:%-I\$
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totalCount, int pageSize, int startIndex){ T^vhhfCUr
setPageSize(pageSize); +lxjuEiae
setTotalCount(totalCount); >wb Uxl%{5
setItems(items); *wx95?H0Z
setStartIndex(startIndex); ERia5HnoD,
} Zz"8
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publicList getItems(){ 4w)>}
return items; G.`},c;A-
} $ ^@fV=e
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publicvoid setItems(List items){ D -d
this.items = items; :w+vi7l$
} fUr%@&~l^
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publicint getPageSize(){ %%NT m
return pageSize; xkv%4H>
} n'0r
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publicvoid setPageSize(int pageSize){ @JGFG+J}
this.pageSize = pageSize; )Xa_ry7
} |Z)}-'QUJ
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publicint getTotalCount(){ p6V#!5Q
return totalCount; ~6IY4']m*
} %z=:P{0UQ
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publicvoid setTotalCount(int totalCount){ `mA;1S
if(totalCount > 0){ *<X1M~p$
this.totalCount = totalCount; ',K:.$My
int count = totalCount / N`?|~g3
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pageSize; NGJst_
if(totalCount % pageSize > 0) (T%?@'\
count++; ,H%[R+)
indexes = newint[count]; C+g}+
for(int i = 0; i < count; i++){ ~(8f Uob
indexes = pageSize * tDRo)z
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} A*~G[KC3(
}else{ n_Qua|R
this.totalCount = 0; Tgax ZW
} Je,o(:
} ]YtN6Rq/
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publicint[] getIndexes(){ ?dbSm3
return indexes; J/Lf(;C_
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publicvoid setIndexes(int[] indexes){ ;S
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this.indexes = indexes; IT{c:jo1{`
}
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publicint getStartIndex(){ ^b$_I31D
return startIndex; (qvH=VTwP
} jXLd#6
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publicvoid setStartIndex(int startIndex){ ;mT}Q;F#
if(totalCount <= 0) q/@+.q
this.startIndex = 0; 3UaW+@
elseif(startIndex >= totalCount) ^ghYi|kQq
this.startIndex = indexes n~]"sTC}&
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[indexes.length - 1]; Km
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elseif(startIndex < 0) }Nd1'BVf
this.startIndex = 0; >}\s-/
else{ >$TvCw
this.startIndex = indexes "[!b5f3!I
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[startIndex / pageSize]; !Ve0 :$
}
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} qB (Pqv
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publicint getNextIndex(){ LWm1j:0
int nextIndex = getStartIndex() + 1O<6=oH
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pageSize; IdN3Ea]
if(nextIndex >= totalCount) |Y05 *!\P*
return getStartIndex(); mvK^')
else HE-5e):
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return nextIndex; Ak,JPzT
} a#"orc j
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publicint getPreviousIndex(){ rR :ZTfJs"
int previousIndex = getStartIndex() - tT>LOI_z
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pageSize; }x\#ul)
if(previousIndex < 0) `-.2Z
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else DqT<bNR1*;
return previousIndex; 8-NycG&)
} cz1 + XpU
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} `(h^z>%
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抽象业务类 ~ HhB@G!3
java代码: #Zw:&'
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/** :>JfBJ]|
* Created on 2005-7-12 E`I(x&_
*/ n)"JMzjQ<
package com.javaeye.common.business; -f&vH_eK
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import java.io.Serializable; l[c '%M |N
import java.util.List; %K4M`R|2]
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import org.hibernate.Criteria; p|.5;)%|
import org.hibernate.HibernateException; m9A%Z bQ^
import org.hibernate.Session; 5RN!"YLI3
import org.hibernate.criterion.DetachedCriteria; mf$YsvPq*+
import org.hibernate.criterion.Projections; Mq)]2>"v
import (87| :{
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org.springframework.orm.hibernate3.HibernateCallback; qvSYrnpn
import <+g77NL
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org.springframework.orm.hibernate3.support.HibernateDaoS tRJ5IX ##L
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upport; 0S$k;q
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import com.javaeye.common.util.PaginationSupport; +4_, , I
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public abstract class AbstractManager extends \/YRhQ
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HibernateDaoSupport { 2I [zV7 @t
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privateboolean cacheQueries = false; `6)Qi*Z
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privateString queryCacheRegion; F-wAQ:
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publicvoid setCacheQueries(boolean ;&O?4?@4
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cacheQueries){ |Q3d7y
this.cacheQueries = cacheQueries; ?-<lIFFh
} +FqD.= 8
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publicvoid setQueryCacheRegion(String K<*6E@+i
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queryCacheRegion){ F1stRZ1ZI
this.queryCacheRegion = "ktuq\a@
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queryCacheRegion; qx5`lm~L
} i`2SebDj'w
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publicvoid save(finalObject entity){ \L(cFjLIl
getHibernateTemplate().save(entity); |qn2b=
} C7ivAh
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publicvoid persist(finalObject entity){ ?d-w#<AiV
getHibernateTemplate().save(entity); BA:x*(%~
} 'c7nh{F
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publicvoid update(finalObject entity){ }8x+F2i
getHibernateTemplate().update(entity); "a)6g0gw
} lf7bx}P*
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publicvoid delete(finalObject entity){ sWo`dZ\6WB
getHibernateTemplate().delete(entity); tJ6@Ot
} '-%1ILK$3r
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publicObject load(finalClass entity, UmWXv#q\l
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finalSerializable id){ dR]-R/1|
return getHibernateTemplate().load m}wn+R
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(entity, id); -_ I)5*N
} D8wf`RUt
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publicObject get(finalClass entity, ae sk.
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finalSerializable id){ G^W0!u,@
return getHibernateTemplate().get 89LD:+p/
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(entity, id); {oqbV#/&
} gPKf8{#%e
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publicList findAll(finalClass entity){ Pz2 b
return getHibernateTemplate().find("from wu.l-VmGp)
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" + entity.getName()); |MZ1j(_
} T ?[28|
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publicList findByNamedQuery(finalString 8D )nM|
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namedQuery){ =o##z5j
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return getHibernateTemplate jjV'`Vy)
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().findByNamedQuery(namedQuery); y8~OkdlN#
} g{yw&q[B=
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publicList findByNamedQuery(finalString query, U*r54AyP
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finalObject parameter){ VC88re`
return getHibernateTemplate $z%(He
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().findByNamedQuery(query, parameter); V6][*.i!9
} [;z\bV<S
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publicList findByNamedQuery(finalString query, Qfm$q~`D^W
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finalObject[] parameters){ :'DyZy2Fd
return getHibernateTemplate l/G+Xj4M
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().findByNamedQuery(query, parameters); lr>NG,N
} @Ul3J )=m
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publicList find(finalString query){ e3 v^j$
return getHibernateTemplate().find 1nAm\/&
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(query); oPmz$]_Z
} u8zL[]>
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publicList find(finalString query, finalObject +\T8`iCFB
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parameter){ PeIx41. +s
return getHibernateTemplate().find r
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(query, parameter); TGF$zvd
} g5nJ0=9
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public PaginationSupport findPageByCriteria 0/su`
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(final DetachedCriteria detachedCriteria){ nc;eNB
return findPageByCriteria 12Oa_6<\0;
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 01?+j%k=m/
} O-V|= t
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public PaginationSupport findPageByCriteria O^MI073Q>t
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(final DetachedCriteria detachedCriteria, finalint vS8&,wJ!
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startIndex){ f5V-;
return findPageByCriteria v])ew|
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(detachedCriteria, PaginationSupport.PAGESIZE, "UTW(~D'
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startIndex); @ual+=L
} yu'-'{%
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public PaginationSupport findPageByCriteria !.6n=r8d
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(final DetachedCriteria detachedCriteria, finalint 4QA~@pBX^{
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pageSize, s/7Z.\
finalint startIndex){ =%m{|HQ`
return(PaginationSupport) J#$U<`j*G
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getHibernateTemplate().execute(new HibernateCallback(){ 3jAr"xc
publicObject doInHibernate O t)}:oG
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(Session session)throws HibernateException { =cEsv&i
Criteria criteria = 3mHzOs\jU
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detachedCriteria.getExecutableCriteria(session); }nlS&gew^
int totalCount = =Dq&lm,n
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((Integer) criteria.setProjection(Projections.rowCount q!c=f!U?\l
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()).uniqueResult()).intValue(); _Tj&gyS
criteria.setProjection 6M
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(null); |6Q5bV
List items = 8* A%k1+
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criteria.setFirstResult(startIndex).setMaxResults wyy
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(pageSize).list(); D6L+mTN
PaginationSupport ps = 9O 'j+?(`@
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new PaginationSupport(items, totalCount, pageSize, HEVjK$
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startIndex); w^0hVrws=,
return ps; /
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} "9_$7.q<y
}, true); 3:iEt (iCI
} S"&Gutu3o
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public List findAllByCriteria(final PuJ3#H
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DetachedCriteria detachedCriteria){ )k Wxp
return(List) getHibernateTemplate <