Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 vt#;j;liG
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 U0_^6zd_
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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 _Ub
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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 G7CeWfS
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分页支持类:
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java代码: SQ>i:D;
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package com.javaeye.common.util; d<a|dwAeh
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import java.util.List; '}_r/l]K
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publicclass PaginationSupport { {]^Ixm-,f
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publicfinalstaticint PAGESIZE = 30; 0\%g@j-aD
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privateint pageSize = PAGESIZE; |ri)-Bk
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privateList items; [%.v;+L
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privateint totalCount; E^i]eK*"
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privateint[] indexes = newint[0]; aas.-NT
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privateint startIndex = 0; Py)ZHML
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public PaginationSupport(List items, int glMHT,
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totalCount){ |u&cN-}C d
setPageSize(PAGESIZE); fM;,9
setTotalCount(totalCount); Rg?6e N
setItems(items); 7N9NeSH
setStartIndex(0); /}? 7Eni
} !__0Vk[s
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public PaginationSupport(List items, int !$Nj!
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totalCount, int startIndex){ bU!
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setPageSize(PAGESIZE); cl~Yx4
setTotalCount(totalCount); n"(!v7YNp
setItems(items); P=94
setStartIndex(startIndex); ]i*ucW4
} (GSP3KKo*G
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public PaginationSupport(List items, int (>v'0RA
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totalCount, int pageSize, int startIndex){ M5^Y
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setPageSize(pageSize); 1-_r\sb
setTotalCount(totalCount); &3Zq1o
setItems(items); js_`L#t
setStartIndex(startIndex); 3'4+3Xo
} V%s
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publicList getItems(){ WTvUz.Et
return items; ot^p xun
} @5%&wC
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publicvoid setItems(List items){ }|P3(*S
this.items = items; .hl_zc#
} bNea5u##
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publicint getPageSize(){ Ww7Ya]b.k
return pageSize; I~GF%$-G
} GShxPH{_j
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publicvoid setPageSize(int pageSize){ -pu5O9
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this.pageSize = pageSize; P-@MLIC{
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publicint getTotalCount(){ C?<pD+]b_
return totalCount; Q.mJ7T~T
} fO*jCl
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publicvoid setTotalCount(int totalCount){ !J`lA
if(totalCount > 0){ ZaFt4#
this.totalCount = totalCount;
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int count = totalCount / OK[J
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pageSize; *%j$i_
if(totalCount % pageSize > 0) Y=Vbs x
count++; %Y^J''
indexes = newint[count]; >Fel) a
for(int i = 0; i < count; i++){ </h^%mnd
indexes = pageSize * >L7s[vKn
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} ht3.e[%'b
}else{ (`P\nnb
this.totalCount = 0; lPTx] =G
} [0H0%z#tU&
} oo5=5s6 3}
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publicint[] getIndexes(){ d1j9{
return indexes; 2QfN.<[-
} drq3=2
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publicvoid setIndexes(int[] indexes){ )pnyVTKt
this.indexes = indexes; +&EXTZ@o
} %Tm*^
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publicint getStartIndex(){ 'Uok<;
return startIndex; mB?x_6#d9
} .fA*WQ!lb
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publicvoid setStartIndex(int startIndex){ #+I'V\[
if(totalCount <= 0) IrLGAQ0
this.startIndex = 0; qL(Q1O!
elseif(startIndex >= totalCount) }r:o8+4
this.startIndex = indexes T<AT&4
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[indexes.length - 1]; !IxO''4
elseif(startIndex < 0) NxT"A)u
this.startIndex = 0; zw0w."V
else{ XX6Z|Y5.
this.startIndex = indexes 7>vm?a^D2&
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[startIndex / pageSize]; *XVwTW[a
} A4K.,bZ
} [Kgb#L'{
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publicint getNextIndex(){ a?cJl
int nextIndex = getStartIndex() + !vnQ;g5
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pageSize; :+rGBkw1m
if(nextIndex >= totalCount) 7s9h:/Lu
return getStartIndex(); wj|Zn+{"nF
else Vz{+3vfra6
return nextIndex; ]Bw0Qq F#
} sDY~jP[Oa
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publicint getPreviousIndex(){ o4(*nz
int previousIndex = getStartIndex() - UM}u(;oo%)
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pageSize; O] _4pP
if(previousIndex < 0) 7nZPh3%
return0; e#eVc'=cDR
else x&}]8S)
return previousIndex; *GP2>oEM
} jG5HW*>k0
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} ~(5r+Z}*`
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抽象业务类 .R9Z$Kbq
java代码: e|~MJu+1
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/** 5E:$\z;
* Created on 2005-7-12 5of3&
*/ q}1ZuK`6
package com.javaeye.common.business; =W(*0"RM
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import java.io.Serializable; sE1cvAw9l
import java.util.List; lWbu`y
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import org.hibernate.Criteria; $Y$9]G":
import org.hibernate.HibernateException; #el27"QP0
import org.hibernate.Session; iyskADS
import org.hibernate.criterion.DetachedCriteria; s?SspuV
import org.hibernate.criterion.Projections; >4 OXG7.&f
import ao(T81
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org.springframework.orm.hibernate3.HibernateCallback; %|Ps|iV
import k3\N.@\
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org.springframework.orm.hibernate3.support.HibernateDaoS 98m|&7
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upport; ZedFhm
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import com.javaeye.common.util.PaginationSupport; ~j0rORy]
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public abstract class AbstractManager extends ,Q`qnn&
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