Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 HT&CbEa4'
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 X[/>{rK
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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 fy+fJ )4sj
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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 &*2\1;1tB
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分页支持类: D![42H+-Qd
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java代码: |^fubQs;2
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package com.javaeye.common.util; 3ARvSz@5
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import java.util.List; Z]?Tx2|7
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publicclass PaginationSupport { q#LB 2M
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publicfinalstaticint PAGESIZE = 30; ^u'hl$`^
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privateint pageSize = PAGESIZE; ,b[}22
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privateList items; PPoQNW
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privateint totalCount; ;:<z hO
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privateint[] indexes = newint[0]; A/5??3H
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privateint startIndex = 0; e7e6b-"_2
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public PaginationSupport(List items, int &L7u//
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totalCount){ B
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setPageSize(PAGESIZE); $t*>A+J
setTotalCount(totalCount); |-Rg].
setItems(items); 0IZaf%zYc
setStartIndex(0); (al.7VA;9
} $+(Df|)
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public PaginationSupport(List items, int bVfFhfh*
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totalCount, int startIndex){ UN ;9h9
setPageSize(PAGESIZE); &O|!w&
setTotalCount(totalCount); -CV_yySc
setItems(items); U-RR>j
setStartIndex(startIndex); R&oC9<
} #'`!*VI
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public PaginationSupport(List items, int tG8)!
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totalCount, int pageSize, int startIndex){ ed3d 6/%HR
setPageSize(pageSize); ~ZrSoVP=
setTotalCount(totalCount); LV4\zd6
setItems(items); k+-IuO
setStartIndex(startIndex); mCM7FFl I
} lT.Q)(
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publicList getItems(){ y{&k`H
return items; :~uvxiF
} m7<HK,d
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publicvoid setItems(List items){ %>,B1nt
this.items = items; F;
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publicint getPageSize(){ XKp$v']u
return pageSize; E`E$ }iLs
} bBx.snBK
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publicvoid setPageSize(int pageSize){ }iGpuoXT`
this.pageSize = pageSize; $qz(9M(m#
} -dRnozs6W
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publicint getTotalCount(){ 7JC^+rk
return totalCount; c}XuzgSY
} 2bJqZ,@
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publicvoid setTotalCount(int totalCount){ .&z/p3 1
if(totalCount > 0){ T6/d[SH>
this.totalCount = totalCount; T >pz/7gb
int count = totalCount / l'yX_`*Iq
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pageSize; U2Uf69R
if(totalCount % pageSize > 0) 7CKpt.Sz6
count++; cZ8lRVaWW
indexes = newint[count]; |\HYq`!g%7
for(int i = 0; i < count; i++){ ~Te9Lq |
indexes = pageSize * WUC-*(
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} ^{ Kj{M22
}else{ rTJ='<hIy
this.totalCount = 0; wEQ7=Gyx
} M<Gr~RKmAn
} V)pn)no'V
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publicint[] getIndexes(){ m7~<z>5$
return indexes; 0LX"<~3j
} Sn o7Ru2
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publicvoid setIndexes(int[] indexes){ } kNbqwVP
this.indexes = indexes; ]mfI$p%
} M lv
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publicint getStartIndex(){ 1\'?.
return startIndex; R1!F mZW8
} C]X:@^Hy
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publicvoid setStartIndex(int startIndex){ .,-,@ZK
if(totalCount <= 0) .2K4<UOAbm
this.startIndex = 0; a'NxsByG]s
elseif(startIndex >= totalCount) B #[URZ9S
this.startIndex = indexes ~ RdD6V
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[indexes.length - 1]; Mx-? &
elseif(startIndex < 0) ,H_b@$]n8
this.startIndex = 0; 7m4gGkX#r
else{ 4yZ'+\ +I
this.startIndex = indexes s!lLdR[g
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[startIndex / pageSize]; 3CKd[=-Z
} @Feusprs
} I "8:IF
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publicint getNextIndex(){ -d j9(~?^
int nextIndex = getStartIndex() + ]q,5'[=~4h
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pageSize; nZ4JI+Q)~
if(nextIndex >= totalCount) WFGcR9mN?
return getStartIndex(); t)#dR._q
else OpNTyKbaD
return nextIndex; S":55YQev!
} #!A'6SgbkM
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publicint getPreviousIndex(){ 0
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int previousIndex = getStartIndex() - fbl8:c)I
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pageSize; r8R]0\
if(previousIndex < 0) YmBo/I M
return0; #NoY}*
else AX`>y@I
return previousIndex; 8+7n"6GY2/
} gs xT
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} X0QY:?
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抽象业务类 %^`b)
java代码: QNN*/n
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/** UQ7E7yY#
* Created on 2005-7-12 FnZMW, P
*/ %OV)O -
package com.javaeye.common.business; &Zzd6[G+
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import java.io.Serializable; +#B4Z'nT
import java.util.List; dy}O6
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import org.hibernate.Criteria; 0mb|JoE(
import org.hibernate.HibernateException; tny^sG/'
import org.hibernate.Session; ~BUzyc%
import org.hibernate.criterion.DetachedCriteria; 6~oo.6bA
import org.hibernate.criterion.Projections; 7EfLd+
import =6sA49~M
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org.springframework.orm.hibernate3.HibernateCallback; A`#/:O4|f
import 7Gos-_s
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org.springframework.orm.hibernate3.support.HibernateDaoS wt@Qjbqd8
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upport; TKwMgC}<[
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import com.javaeye.common.util.PaginationSupport; 5xS
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public abstract class AbstractManager extends WR;)
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HibernateDaoSupport { V(?PKb-w)
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privateboolean cacheQueries = false; &8!~H<S
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