Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 QrFKjmD<
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Xf"<
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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 v>nBdpjXh
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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 2yFT` 5+H4
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分页支持类: \M|:EG%
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java代码: R
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package com.javaeye.common.util; y<m[9FC}
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import java.util.List; 3 G<4rH]
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publicclass PaginationSupport { 'Q7^bF^
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publicfinalstaticint PAGESIZE = 30; ,uNJz -B8
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privateint pageSize = PAGESIZE; 0WKS
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privateList items; <}'=@a
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privateint totalCount; ;!=i|"PG
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privateint[] indexes = newint[0]; mN.[bz
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privateint startIndex = 0; oP4+:r)LKD
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public PaginationSupport(List items, int 3` oOoKX
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totalCount){ \RPwSx
setPageSize(PAGESIZE); gs/o cu
setTotalCount(totalCount); dKD:mU",M
setItems(items); %,<Ki]F
setStartIndex(0); ."O%pL]!/b
} SsZSR.tD
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public PaginationSupport(List items, int I
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totalCount, int startIndex){ .L;e:cvx
setPageSize(PAGESIZE); <Uj9~yVN]
setTotalCount(totalCount); {J/Fp#
setItems(items); a]%sks
setStartIndex(startIndex); /NiD#s0t
} -])=\n!=
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public PaginationSupport(List items, int Z^'\()3t
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totalCount, int pageSize, int startIndex){ gX-hYQrC
setPageSize(pageSize); P,3w
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setTotalCount(totalCount); b5
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setItems(items); v2:i'j6
setStartIndex(startIndex); $?k]KD
} ZMiOKVl
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publicList getItems(){ IFS_DW
return items; R?9x!@BV
} dT?3Q;>B?
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publicvoid setItems(List items){ nfGI4ZE
this.items = items; kQ lwl9
} %.$7-+:7A
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publicint getPageSize(){ Yc_(g0NK
return pageSize; H=f|X<8
} ]b sabS?
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publicvoid setPageSize(int pageSize){ dkCUU
this.pageSize = pageSize; '6>*J
} <LXx_{=:
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publicint getTotalCount(){ 1 0c.#9$
return totalCount; p nI=
} 3b]M\F9
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publicvoid setTotalCount(int totalCount){ +DR$ >a
if(totalCount > 0){ =Tl_~OR
this.totalCount = totalCount; T{f$S
int count = totalCount / Qe ip h
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pageSize; B{:a,V7
if(totalCount % pageSize > 0) >{:hadUH
count++; dY~z6bT
indexes = newint[count]; yzzJKucVU:
for(int i = 0; i < count; i++){ YC56]Zp
indexes = pageSize * 4G&dBH
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} btq4diW
}else{ 3z2
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this.totalCount = 0; 6Xm'^T
} T:m"
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} o,*D8[
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publicint[] getIndexes(){ 09G47YkSy1
return indexes; kV5)3%?
} GfEWms8z
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publicvoid setIndexes(int[] indexes){ GbL1<P$V
this.indexes = indexes; v*=P
} O x-eB
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publicint getStartIndex(){ |b.xG_-s1
return startIndex; (?zD!%
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} `V\?YS}
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publicvoid setStartIndex(int startIndex){ H;=Fq+
if(totalCount <= 0) vI5lp5( -3
this.startIndex = 0; p`c_5!H
elseif(startIndex >= totalCount) )hj:Xpj9#
this.startIndex = indexes 6:Z8d%Z
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[indexes.length - 1]; 3Ioe#*5\
elseif(startIndex < 0) =uAy/S
this.startIndex = 0; +?m.uY(
else{ Y-YuY
this.startIndex = indexes g""GQeR
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[startIndex / pageSize]; tS]
} y5m2u8+
} VLkAsM5}%
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publicint getNextIndex(){ 'D
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int nextIndex = getStartIndex() + 'EAskA]*
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pageSize; g;8 wP5i
if(nextIndex >= totalCount) _J W|3q
return getStartIndex(); er)I ".|
else B<m0YD?>~>
return nextIndex; 0zq'Nf?#3
} S\&3t}_
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publicint getPreviousIndex(){ 5j1d=h
int previousIndex = getStartIndex() - d>8"-$
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pageSize; k<^M >` $
if(previousIndex < 0) %(lO>4>|
return0; CYW@Km{e
else $%cc[[/U
return previousIndex; )XK\[tL
} $P0q!
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} NEri{qxm
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抽象业务类 }:Z A)
java代码: \{lv~I
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/** L4g%o9G
* Created on 2005-7-12 _f^KP@^j
*/ r8Pd}ptPU
package com.javaeye.common.business; JL= c IH8
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import java.io.Serializable; ob{'Z]-V
import java.util.List; X&qx4DL
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import org.hibernate.Criteria; lZcNio
import org.hibernate.HibernateException; UPfO;Z`hJ
import org.hibernate.Session; f` uRC-B/
import org.hibernate.criterion.DetachedCriteria; 2(xC|
import org.hibernate.criterion.Projections; E
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import 8I#ir4z#<
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org.springframework.orm.hibernate3.HibernateCallback; 2L^)k?9>g+
import @ivd|*?k0
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org.springframework.orm.hibernate3.support.HibernateDaoS k k3^m1
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upport; :;7I_tb
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import com.javaeye.common.util.PaginationSupport; uPA
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public abstract class AbstractManager extends 'kZ,:.v
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HibernateDaoSupport { e yJ07
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privateboolean cacheQueries = false; "n!yK
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privateString queryCacheRegion; 3`HK^((o
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publicvoid setCacheQueries(boolean #dA$k+3
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cacheQueries){ I9*cEZ!l=e
this.cacheQueries = cacheQueries; n~* ".ZC'Y
} %X{EupiFA
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publicvoid setQueryCacheRegion(String $RPW/Lyiq
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queryCacheRegion){ V0\[|E;F
this.queryCacheRegion = (CmK>"C+
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queryCacheRegion; Zh<;r;2
} )|F|\6:ne
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publicvoid save(finalObject entity){ []>'Dw_r
getHibernateTemplate().save(entity); kz"uTJK
} 9Yx(u2PQ
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publicvoid persist(finalObject entity){ !Lf<hS^
getHibernateTemplate().save(entity); g>@JGzMLP
} 6Xlzdt
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publicvoid update(finalObject entity){ 0mY Y:?v
getHibernateTemplate().update(entity); 5</$dcG
} SiratkP9n7
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publicvoid delete(finalObject entity){ ]k0
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getHibernateTemplate().delete(entity); NK_|h%
} {m.$EoS
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publicObject load(finalClass entity, }rTH<!j
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finalSerializable id){ _IYaMo.n
return getHibernateTemplate().load %BqaVOKJ"f
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(entity, id); 0s#72}n
} ^OR0Vp>L
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publicObject get(finalClass entity, }SN( ^3N
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finalSerializable id){ eU?hin@X
return getHibernateTemplate().get !'7fOP-J]
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(entity, id); gE-y`2SU
} l4Xz r:]
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publicList findAll(finalClass entity){ Ifj&S'():
return getHibernateTemplate().find("from CLb6XnkcA\
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" + entity.getName()); *Z5^WHwg
} [VCC+_
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publicList findByNamedQuery(finalString ^QB[;g.O
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namedQuery){ k*.]*]
return getHibernateTemplate I2ek`t]
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().findByNamedQuery(namedQuery); 24mdhT|
} yBIlwN`kB
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publicList findByNamedQuery(finalString query, `BPTcL<W
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finalObject parameter){ w2)Ro:G
return getHibernateTemplate ou|emAV
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().findByNamedQuery(query, parameter); `2~>$Tr
} .J"N}
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publicList findByNamedQuery(finalString query, gg;r;3u
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finalObject[] parameters){ IP~!E_e}\
return getHibernateTemplate Zo9<96I&
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().findByNamedQuery(query, parameters); ])x1MmRg\
} j]a$RC#
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publicList find(finalString query){ =P-&dN
return getHibernateTemplate().find INZVe(z
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(query); &J[a.:..
} |.IH4
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publicList find(finalString query, finalObject R`?l.0
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parameter){ mYBEjZB
return getHibernateTemplate().find !,WGd|oJ
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(query, parameter); .p`4>XA
} g8),$:Uw
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public PaginationSupport findPageByCriteria bQll;U^A
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(final DetachedCriteria detachedCriteria){ cw;wv+|k
return findPageByCriteria ZO}Og&%
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); l?Y^3x}j
} j jpYg
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public PaginationSupport findPageByCriteria +)Te)^&v%
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(final DetachedCriteria detachedCriteria, finalint :NzJvI<
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startIndex){ QaX.Av
return findPageByCriteria #u<Qc T@
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(detachedCriteria, PaginationSupport.PAGESIZE, (iIw}f)w
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startIndex); r@r%qkh(.@
} ]AP1+
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public PaginationSupport findPageByCriteria Pg4&}bX:I
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(final DetachedCriteria detachedCriteria, finalint C
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pageSize, Ur j*V0^
finalint startIndex){ C3AWXO ^
return(PaginationSupport) > =>/~dIb
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getHibernateTemplate().execute(new HibernateCallback(){ [+#m
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publicObject doInHibernate ~iw&^p|=K
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(Session session)throws HibernateException { gmTBT#{6yH
Criteria criteria = wZrFu(_
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detachedCriteria.getExecutableCriteria(session); !`ol&QQ#
int totalCount = &9k~\;x
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((Integer) criteria.setProjection(Projections.rowCount aCQtE,.
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()).uniqueResult()).intValue(); y48]|%73
criteria.setProjection a|ft l&uk
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(null); e~h>b.~
List items = owVvbC2<b(
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criteria.setFirstResult(startIndex).setMaxResults pMF
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(pageSize).list(); U}v`~'K
PaginationSupport ps = B6XO&I1c
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new PaginationSupport(items, totalCount, pageSize, k(Yz2
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startIndex); Tw~R-SiS`s
return ps; :\TMm>%q
} >T$0*7wF
}, true); W?7l-k=S
} ~% hdy@
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public List findAllByCriteria(final #ydold{F
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DetachedCriteria detachedCriteria){ 9O[IR)O~
return(List) getHibernateTemplate [X(m[u '%
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