Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 W6STjtT3P
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 {yFCGCs
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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;_m1UpuW
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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 W%Jw\ z=
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分页支持类: SLI(;, s
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java代码: }.`no
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package com.javaeye.common.util; /qf(5Bm
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import java.util.List; B<^yT@Wc
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publicclass PaginationSupport { ",&^ f
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publicfinalstaticint PAGESIZE = 30; \.!+'2!m
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privateint pageSize = PAGESIZE; N>a. dYXr
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privateList items; gl.uDO%.
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privateint totalCount; S(*u_
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privateint[] indexes = newint[0]; barY13)$U
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privateint startIndex = 0; Vc2(R^
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public PaginationSupport(List items, int u?Pec:3%
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totalCount){ S=f:-?N|
setPageSize(PAGESIZE); UYLCzv~W
setTotalCount(totalCount); {Sl#z}@s
setItems(items); ,Q%q!#@
setStartIndex(0); z?Hi
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} $G UCVxs
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public PaginationSupport(List items, int
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totalCount, int startIndex){ nr*nX
setPageSize(PAGESIZE);
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setTotalCount(totalCount); 3haR/YN
setItems(items); )~>
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setStartIndex(startIndex); d2~*fHx_!
} %?sPKOh3N}
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public PaginationSupport(List items, int :}B=Bk/q
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totalCount, int pageSize, int startIndex){ 6VUkZKc
setPageSize(pageSize); W%&gvZre.
setTotalCount(totalCount); NUN~T (
setItems(items); frh!dN
setStartIndex(startIndex); '?gF9:
} Qq7%{`<}
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publicList getItems(){ fpPB_P{Ua
return items; U))2?#
} #B$r|rqamq
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publicvoid setItems(List items){ :abpht
this.items = items; >Tf <8r,
} Hoj'zY
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publicint getPageSize(){ ByU&fx2Z
return pageSize; XJSI/jpa@
} &mPR[{
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publicvoid setPageSize(int pageSize){ L\cbY6b
this.pageSize = pageSize; !_P-?u
} \Bvy~UeE)>
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publicint getTotalCount(){ ##QKXSD
return totalCount; .EfGL_
} oR@emYL
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publicvoid setTotalCount(int totalCount){ px=k&|l
if(totalCount > 0){ "AuU5G 9'I
this.totalCount = totalCount; ~@H9h<T
int count = totalCount / )a=FhSB[G
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pageSize; hy}n&h
if(totalCount % pageSize > 0) n/ CP2A
count++; SHA6;y+U/~
indexes = newint[count]; 6uu49x_^L4
for(int i = 0; i < count; i++){ ^1\[hyZ!
indexes = pageSize * hpBn_
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} IM(=j
}else{ D:56>%y@
this.totalCount = 0; M> rertUR
} m=#<
} V9\y*6#Y,
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publicint[] getIndexes(){ u-k!h
return indexes;
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} .a_xQ]eQ
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publicvoid setIndexes(int[] indexes){ lxh}N,
this.indexes = indexes; D>6vI
} *7`amF-
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publicint getStartIndex(){ yyv<MSU8
return startIndex; '{F
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} ~&7 *<`7{
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publicvoid setStartIndex(int startIndex){ 0ZJN<AzbA
if(totalCount <= 0) #W2#'J:l
this.startIndex = 0; =rzhaU'A'
elseif(startIndex >= totalCount) )uK Tf=;
this.startIndex = indexes 3f)!RKS9q
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[indexes.length - 1]; _h1:{hF
elseif(startIndex < 0) (U_dPf
this.startIndex = 0; =|O><O|
else{ "tUc
this.startIndex = indexes cS;O]>/5
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[startIndex / pageSize]; +V,Ld&r
} Uv|^k8(
} E>L_$J -A-
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publicint getNextIndex(){ FX&)~)
int nextIndex = getStartIndex() + p}MH LM
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pageSize; fK1^fzV
if(nextIndex >= totalCount) J?[}h&otQ
return getStartIndex(); G&,2>qxKR
else EWp'zbWP
return nextIndex; W't.e0L<6
} IEQ6J}L
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publicint getPreviousIndex(){ N,?D<NjXl
int previousIndex = getStartIndex() - dY$jg
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pageSize; 9
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if(previousIndex < 0) uTIl} N
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else 1IeB_t
return previousIndex; n,o;:c
} .9u,54t
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抽象业务类 SX6P>:`
java代码: F/chE c
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/** nyr)d%I{
* Created on 2005-7-12 Fwfe5`9'
*/ r/BiR0$E
package com.javaeye.common.business; >a5avSn
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import java.io.Serializable; !#Hca
import java.util.List; VkDFR
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import org.hibernate.Criteria; *N?y <U
import org.hibernate.HibernateException; GcA!I!j/
import org.hibernate.Session; a&~]77)
import org.hibernate.criterion.DetachedCriteria; CJ
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import org.hibernate.criterion.Projections; $C ?G7Vs
import bmu<V1[W
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org.springframework.orm.hibernate3.HibernateCallback; bcy(
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org.springframework.orm.hibernate3.support.HibernateDaoS >6cENe_@t
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import com.javaeye.common.util.PaginationSupport; ^jMo?Zwy
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public abstract class AbstractManager extends +6v;(] y
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HibernateDaoSupport { #p^r)+\3=
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privateboolean cacheQueries = false; !B\[Q$
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privateString queryCacheRegion; gHzjI[WI
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publicvoid setCacheQueries(boolean -hP-w>
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cacheQueries){ UZUG?UUM
this.cacheQueries = cacheQueries; 3`aJ"qQE
} 59I}
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publicvoid setQueryCacheRegion(String `[J(au$z
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queryCacheRegion){ b1{XGK'
this.queryCacheRegion = fMFlY%@t
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queryCacheRegion; AFcA5:ja
} I#tEDeF2
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publicvoid save(finalObject entity){ "UY.;
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getHibernateTemplate().save(entity); 4$+9k;m'
} <AB.`["
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publicvoid persist(finalObject entity){ iAlFgOk'
getHibernateTemplate().save(entity); V6ioQx=K#
} V-(LHv
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publicvoid update(finalObject entity){ m'%Z53&
getHibernateTemplate().update(entity); ^(0tNX/XD
} w5(GRAH
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publicvoid delete(finalObject entity){ C4P7,
getHibernateTemplate().delete(entity); (d C<N3
} vAE?^*F
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publicObject load(finalClass entity, kty,hAXe
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finalSerializable id){ rHtT>UE=
return getHibernateTemplate().load " lf_`4
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(entity, id); s
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