Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 *A< 5*Db:F
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 9l,oP?
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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 :4s1CC+@\
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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 1}37Q&2
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分页支持类: 9kojLqCT
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java代码: GL JMP^p
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package com.javaeye.common.util; ca}2TT&t
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import java.util.List; {t!!Uz 7
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publicclass PaginationSupport { ,47qw0=C
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publicfinalstaticint PAGESIZE = 30; q =Il|Nb>
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privateint pageSize = PAGESIZE; nie% eC&U
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privateList items; fLVAKn
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privateint totalCount; |' .
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privateint[] indexes = newint[0]; kl,3IKHa
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privateint startIndex = 0; L(o15
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public PaginationSupport(List items, int V,9cl,z+
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totalCount){ 4sM.C9W
setPageSize(PAGESIZE); h1{3njdr
setTotalCount(totalCount); ~v83pu1!2s
setItems(items); 5?L<N:;J_
setStartIndex(0); KU;9}!#
} d1kJRJ
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public PaginationSupport(List items, int 0g\(+Qg^
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totalCount, int startIndex){ SB7c.H,
setPageSize(PAGESIZE); d\Zng!Z '
setTotalCount(totalCount); vI]N^j2%
setItems(items); _~pbqa,
setStartIndex(startIndex); 5PW^j\G-f
} rGkyGz8>
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public PaginationSupport(List items, int uGt-l4
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totalCount, int pageSize, int startIndex){ KYP!Rs/j.
setPageSize(pageSize); d %#b:(,
setTotalCount(totalCount); c(%|: P^
setItems(items); oE~Bq/p
setStartIndex(startIndex); Q,9oKg
} j7c3(*Pl
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publicList getItems(){ pmilrZmm]
return items; \;-|-8Q
} 4X$Qu6#i
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publicvoid setItems(List items){ qw8Rlws%
this.items = items; NCx%L-GPi
} H.2QKws^F
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publicint getPageSize(){ '{`$#@a.
return pageSize; $kKjgQS(
} T^v}mWCZ
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publicvoid setPageSize(int pageSize){ y Wya&|D9
this.pageSize = pageSize; gO^gxJ'0t
} =ruao'A
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publicint getTotalCount(){ /=, nGk>
return totalCount; Faf&U%]*`
} ~nPtlrQa#*
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publicvoid setTotalCount(int totalCount){ Lxk[;j+
if(totalCount > 0){ rD>f|kA?L
this.totalCount = totalCount; B]$GSEB
int count = totalCount / <|\Lm20G]
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pageSize; IMfqiH)
if(totalCount % pageSize > 0) )/EO&F
count++; S@Hf
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indexes = newint[count]; |W\(kb+
for(int i = 0; i < count; i++){ ?rup/4|
indexes = pageSize * 3&/Ixm:
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} YDFyX){
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this.totalCount = 0; &f;K}WO
} 5^KWCS7@
} d:{O\
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publicint[] getIndexes(){ VQ{fne<
return indexes; +'@Dz9:>
} l$'wD hN*
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publicvoid setIndexes(int[] indexes){ FEVlZ<PW3I
this.indexes = indexes; .%OR3"9@
} -R6)ROGl
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publicint getStartIndex(){ #!m.!?
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return startIndex; (3&?w y_l
} ;Q&5,<
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publicvoid setStartIndex(int startIndex){ -Vhw^T1iV
if(totalCount <= 0) &=k,?TJO>
this.startIndex = 0; ilva,WFa^
elseif(startIndex >= totalCount) fg{n(TE"8
this.startIndex = indexes X~i<g?]
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[indexes.length - 1]; _Y[bMuUb=
elseif(startIndex < 0) [66!bM&
this.startIndex = 0; (%:c#;#
else{ 9<)NvU^-r
this.startIndex = indexes (Clkv
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[startIndex / pageSize]; zkdetrR
} :#~j:C|
} OaZQ7BGq
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publicint getNextIndex(){ *
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int nextIndex = getStartIndex() + a -moI+y
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pageSize; L z1ME(
if(nextIndex >= totalCount) UOmY-\ &c
return getStartIndex(); @oad,=R&
else UEVG0qF
return nextIndex; 63~
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} 9?3&?i2-
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publicint getPreviousIndex(){ c:u5\&~{
int previousIndex = getStartIndex() - c\V7i#u[d;
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pageSize; ]}(H0?OQR
if(previousIndex < 0) P}G+4Sk
return0; wIBO
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else 8Dm%@*B^b
return previousIndex; K:Q<CQ2
} iRi-cQVy
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} `I5wV/%ib
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抽象业务类 a+T.^koY
java代码: K>l~SDcZ3
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/** lR6x3C
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* Created on 2005-7-12 =+?7''{>
*/ Oh\<VvZuN
package com.javaeye.common.business; A7hVHxNJ-
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import java.io.Serializable; ^B2
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import java.util.List; klR|6u]%
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import org.hibernate.Criteria; 7;(UF=4
import org.hibernate.HibernateException; \`\ZTZni
import org.hibernate.Session; JO"<{ngsQ
import org.hibernate.criterion.DetachedCriteria; DXK}-4"\
import org.hibernate.criterion.Projections; JOim3(5?s
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org.springframework.orm.hibernate3.HibernateCallback; }t1a*z
import 84 pFc;<
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org.springframework.orm.hibernate3.support.HibernateDaoS -n<pPau2
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upport; 3%;a)c;D
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import com.javaeye.common.util.PaginationSupport; qXtC^n@x
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public abstract class AbstractManager extends WPG(@zD
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HibernateDaoSupport { xZF}D/S?Ov
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privateboolean cacheQueries = false; pDCeQ6?
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privateString queryCacheRegion; @w !PaP
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publicvoid setCacheQueries(boolean \1 &,|\E#
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cacheQueries){ t; {F%9j{
this.cacheQueries = cacheQueries; 'V=P*#|SR
} z4]api(xZ
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publicvoid setQueryCacheRegion(String zb<6
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queryCacheRegion){ W+X6@/BO
this.queryCacheRegion = t9:0TBt-[
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queryCacheRegion; *zL}&RUKM
} <=0
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publicvoid save(finalObject entity){ K_ ~"}
getHibernateTemplate().save(entity); ^ tg<K
} $.rhRKs
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publicvoid persist(finalObject entity){ J@Q7p}
getHibernateTemplate().save(entity); /j|G(vt5
} .:QLk&a,:,
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publicvoid update(finalObject entity){ ,1CIBFY
getHibernateTemplate().update(entity); qd)/9*|Jl
} krvp&+uX
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publicvoid delete(finalObject entity){ Z%/=|[9i
getHibernateTemplate().delete(entity); "Yj'oE%\
} aAMVsE{
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publicObject load(finalClass entity, ~C`^6UQr/?
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finalSerializable id){ z] ?N+NHOA
return getHibernateTemplate().load iv;Is[<o
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(entity, id); >P@H#=
} \EtQ5T*u
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publicObject get(finalClass entity, MgrLSKLT
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finalSerializable id){ @A89eZbW
return getHibernateTemplate().get <\ :Yk
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(entity, id); 8Sh54H
} tL)t" i
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publicList findAll(finalClass entity){ m?fy^>1
return getHibernateTemplate().find("from ZR?yDgL
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" + entity.getName()); 7 Vo$(kj
} kB|B
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publicList findByNamedQuery(finalString =mpVYA
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namedQuery){ X_|J@5b7
return getHibernateTemplate +M$Q
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().findByNamedQuery(namedQuery); HxK80mJ
} `a/%W4
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publicList findByNamedQuery(finalString query, `_RTw5{
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finalObject parameter){ N@1+O,o
return getHibernateTemplate oxkoA
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().findByNamedQuery(query, parameter); Qqvihd
} W!&'pg
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publicList findByNamedQuery(finalString query, h=kh@},
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finalObject[] parameters){ #( jw!d&
return getHibernateTemplate ,5,!es@`b
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().findByNamedQuery(query, parameters); ;1.,Sn+zO
} 2h1C9n%j9
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publicList find(finalString query){ U\;6mK)M^J
return getHibernateTemplate().find ()+<)hg}2
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(query); J)~L
} bMMh|F
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publicList find(finalString query, finalObject 27"%"P.1
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parameter){
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return getHibernateTemplate().find V'T ,4
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(query, parameter); (>GK\=:<
} `[)YEgs
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public PaginationSupport findPageByCriteria %$Z7x\_
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(final DetachedCriteria detachedCriteria){ MIoEauf
return findPageByCriteria I`LuRlw
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); $lIz{ySJv
} ;\Y&ce
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public PaginationSupport findPageByCriteria JSW}*HR
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(final DetachedCriteria detachedCriteria, finalint PGBQn#c<