Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 l RND
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 aR)?a;}H
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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 7>,rvW:]
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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 .'lN4x
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分页支持类: L_?$ayZ;
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java代码: w+_Wc~f
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package com.javaeye.common.util; j@ v-|
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import java.util.List; 7cw]v"iv
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publicclass PaginationSupport { o](.368+4
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publicfinalstaticint PAGESIZE = 30; )4uq
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privateint pageSize = PAGESIZE; :hP58 }Q$
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privateList items; 9L HuS
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privateint totalCount; {D,RU8&
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privateint[] indexes = newint[0]; 5f_7&NxT
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privateint startIndex = 0; b n-=fb(
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public PaginationSupport(List items, int hdj%|~Fj
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totalCount){ TzrW
setPageSize(PAGESIZE); &+- e
setTotalCount(totalCount); v#U pw\!
setItems(items); nh;y:Bi
setStartIndex(0); +^gO/0
} C #aFc01B
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public PaginationSupport(List items, int -*3(a E
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totalCount, int startIndex){ "L@g3g?|`
setPageSize(PAGESIZE); 5^2TfG9
setTotalCount(totalCount); bQ.nFa']
setItems(items); qZbHMTnT6
setStartIndex(startIndex); e5OVq
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} |Puj7Ru
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public PaginationSupport(List items, int =|V"#3$f
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totalCount, int pageSize, int startIndex){ 4 J8Dh;a`
setPageSize(pageSize); Cuv|6t75'
setTotalCount(totalCount); XhA4:t
setItems(items); L[. <o{
setStartIndex(startIndex); rr )/`Kmv%
} u){S$</
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publicList getItems(){ `]{Psc6_=
return items; ,`)OEI|1d
} kfK[u/<i
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publicvoid setItems(List items){ 4(|yD;
this.items = items; 0BDS_Rx
} pVz*ZQ[]
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publicint getPageSize(){ 7LdzZS0OM
return pageSize; fTgbF{?xh
} }4KW@L[g
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publicvoid setPageSize(int pageSize){ 8Fx]koP.
this.pageSize = pageSize; mu>] 9ZW
} A]xCF{*)&
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publicint getTotalCount(){ xB,/dMdTj
return totalCount; e5L1er;6
} -XW8 LaQB
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publicvoid setTotalCount(int totalCount){ Tzf$*Uje3
if(totalCount > 0){ 8_X.c
this.totalCount = totalCount; xT=ySa$|>
int count = totalCount / TrQm]9 @
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pageSize; rkIMM,
if(totalCount % pageSize > 0) |0]YA
count++; dk:xnX%
indexes = newint[count]; rXDJ:NP
for(int i = 0; i < count; i++){
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indexes = pageSize * zzE]M}s
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} 3P`WPph
}else{ s9 &)Fv-#V
this.totalCount = 0; y9ip[Xn-$:
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} /+29.1#|
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publicint[] getIndexes(){ fFHK:n`
return indexes; Iu%^*K%
} f-&ATTx`J
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publicvoid setIndexes(int[] indexes){ SctJxY(}!
this.indexes = indexes; $>![wZ3
} SdSgn |S
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publicint getStartIndex(){ n{$}#NdV
return startIndex; I}_;A<U
} /} a_8iM\
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publicvoid setStartIndex(int startIndex){ 1wlVz#f.
if(totalCount <= 0) ?61L|vr
this.startIndex = 0; ka8$dfC
elseif(startIndex >= totalCount) ~f .y:Sbb
this.startIndex = indexes IqXBz.p
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[indexes.length - 1]; cB<O.@
elseif(startIndex < 0) qL,ka
this.startIndex = 0; ot0U-G(
else{ ovbEmb
this.startIndex = indexes +\srZ<67
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[startIndex / pageSize]; L7<+LA)s0
} e|JIrOnc
} _tA7=*@8
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publicint getNextIndex(){ S7Znz@
int nextIndex = getStartIndex() + blUY.{NN3
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pageSize; "A]?M<R
if(nextIndex >= totalCount) o:H'r7N
return getStartIndex(); 5
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else ]I8]mUiUH
return nextIndex; hcQSB00D^
} 9@Q&B+!
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publicint getPreviousIndex(){ 27Cz1[oX
int previousIndex = getStartIndex() - D$QGL I9(
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pageSize; )U]:9)
if(previousIndex < 0) qg|Ox*_od"
return0; +;YE)~R?
else vUqe.?5
return previousIndex; J}:&eS
} ed=n``P~}
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} dV)Y,Yx0${
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抽象业务类 n%n'1AUP:
java代码: R9Ldl97'
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/** |y klT
* Created on 2005-7-12 'y< t/qo
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package com.javaeye.common.business; y?"$(%3|
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import java.io.Serializable;
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import java.util.List; )4@M`8
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import org.hibernate.Criteria; :-(U%`a[
import org.hibernate.HibernateException; s%5Uj}
import org.hibernate.Session; UE\%e9<l
import org.hibernate.criterion.DetachedCriteria; cT\Ov
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import org.hibernate.criterion.Projections; cW=Qh-`jU;
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org.springframework.orm.hibernate3.HibernateCallback; GI}4,!^N
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org.springframework.orm.hibernate3.support.HibernateDaoS F
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import com.javaeye.common.util.PaginationSupport; J0&zb'1
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public abstract class AbstractManager extends n'q
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HibernateDaoSupport { d:A\<F
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privateboolean cacheQueries = false; rFf:A-#l
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privateString queryCacheRegion; 52da]BW<
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publicvoid setCacheQueries(boolean K/!/M%GB6
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cacheQueries){ ,;9ak-$8p
this.cacheQueries = cacheQueries; m"5{D*|
} ~u};XhZ
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publicvoid setQueryCacheRegion(String 7F,07\c
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queryCacheRegion){ ixIh
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this.queryCacheRegion = rH[5~U
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queryCacheRegion; Ii|uGxEc
} pTc$+Z73
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publicvoid save(finalObject entity){ +G<}JJ'V
getHibernateTemplate().save(entity); >?^~s(t
} u
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publicvoid persist(finalObject entity){ !>CE(;E>z
getHibernateTemplate().save(entity); V+Y|4Y&
} R
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publicvoid update(finalObject entity){ X7t5b7
getHibernateTemplate().update(entity); TFAYVK~
} ~D<7W4c
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publicvoid delete(finalObject entity){ 3yeK@>C
getHibernateTemplate().delete(entity); R1II k
} !y.ei1diw
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publicObject load(finalClass entity, K4iI:
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finalSerializable id){ 3Cq6h;!#
return getHibernateTemplate().load ^RY n8I
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(entity, id); qlz( W
} 83mlZ1jQz
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publicObject get(finalClass entity, kA?X^nj@
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finalSerializable id){ I8%d;G~
return getHibernateTemplate().get !Sh^LYqn
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(entity, id); kqj;l\N
} <8}KEe4
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publicList findAll(finalClass entity){ <9Lv4`]GU5
return getHibernateTemplate().find("from bRx2
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} hu bfK~
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publicList findByNamedQuery(finalString SZCF3m&pz
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namedQuery){ %1Vu=zCAW
return getHibernateTemplate v[0DE*p
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().findByNamedQuery(namedQuery); Xjs21-t%
} +AE&GU
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publicList findByNamedQuery(finalString query, ygmv_YLjm
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finalObject parameter){ cpE25
return getHibernateTemplate CBiU#h
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().findByNamedQuery(query, parameter); 1{SrHdD=
} B'WCN&N
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publicList findByNamedQuery(finalString query, b:N^Fe
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finalObject[] parameters){ +)/Rql(lY
return getHibernateTemplate v7s]
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().findByNamedQuery(query, parameters); A[sM{i~Z
}
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publicList find(finalString query){ &