Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 9J?W '8s5
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Te+^J8
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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 Yr+d1(
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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 [6_"^jgH
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分页支持类: i!L;? `F{
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java代码: :.DI_XN`
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package com.javaeye.common.util; 82|q7*M*.
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import java.util.List; Oo
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publicclass PaginationSupport { Z9xR
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publicfinalstaticint PAGESIZE = 30; ~Yl<S(/4
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privateint pageSize = PAGESIZE; s{ =5-:
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privateList items; ^T{8uJ'kn
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privateint totalCount; sYW[O"oNi
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privateint[] indexes = newint[0]; gGmxx,i
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privateint startIndex = 0; {EL'd!v7e
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public PaginationSupport(List items, int YwXXXh
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totalCount){ b_vVB`>
setPageSize(PAGESIZE); ?I\v0H*
setTotalCount(totalCount); t=i/xG: 5
setItems(items); Y#`Lcg+r,
setStartIndex(0); awFhz 6
} ?ql2wWsQO
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public PaginationSupport(List items, int l
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totalCount, int startIndex){ v
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setPageSize(PAGESIZE); S*g`d;8gV
setTotalCount(totalCount); UQ~4c,
setItems(items); AFm,CINa
setStartIndex(startIndex); |Ytg
} 6b<+8w
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public PaginationSupport(List items, int ]H+{eJB7O
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totalCount, int pageSize, int startIndex){ H}
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setPageSize(pageSize); {`F1u?l
setTotalCount(totalCount);
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setItems(items); )\0q_a
setStartIndex(startIndex); ec?V[v
} ib]vX-
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publicList getItems(){ (]XbPW
return items; `L\)ahM
} 74_xR
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publicvoid setItems(List items){ 7]s%rya
this.items = items; !}5*?k
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publicint getPageSize(){ U(~U!O}
return pageSize; 4V$fGjJ3
} -`Q}tg>cT
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publicvoid setPageSize(int pageSize){ Vho0eV=
this.pageSize = pageSize; 30_ckMG"g
} |sf*hlrJ
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publicint getTotalCount(){ %b=p< h'(
return totalCount; 8*s7m
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publicvoid setTotalCount(int totalCount){ _!!}'fMC
if(totalCount > 0){ M6Pw/S!
this.totalCount = totalCount; ] H&c'
int count = totalCount / C(o.Cy6
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pageSize; mM5|K@0|
if(totalCount % pageSize > 0) -CD\+d "
count++; ^i'y6J
indexes = newint[count]; :Q-oV8t{
for(int i = 0; i < count; i++){ d0
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indexes = pageSize * HH8;J66I&
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}else{ a4&:@`=
this.totalCount = 0; nm @']
} EgNH8i
} `c(\i$1JY)
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publicint[] getIndexes(){ L2fVLKH
return indexes; O-PdM`mqW
} [bjN
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publicvoid setIndexes(int[] indexes){ J#aVo&.Y
this.indexes = indexes; <MdGe1n
} XlkGjjW#/J
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publicint getStartIndex(){ TvQ^DZbe
return startIndex; !;dSC<
} ]1sNmi$T
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publicvoid setStartIndex(int startIndex){ i8~$o:&HT
if(totalCount <= 0) c!Dc8=nE0m
this.startIndex = 0; xU}M;4kH~
elseif(startIndex >= totalCount) >SDpuG&>
this.startIndex = indexes f^9&WT
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[indexes.length - 1]; GaBTj_3
elseif(startIndex < 0) VT=K"`EpQ
this.startIndex = 0; m xJXL":|
else{ G {b:i8}l
this.startIndex = indexes qC@Ar)T
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[startIndex / pageSize]; XmWlv{T+
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} l67KJ
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publicint getNextIndex(){ T?npQA07=
int nextIndex = getStartIndex() + /IR#A%U
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pageSize; _%Z P{5D>
if(nextIndex >= totalCount) V1utUGJV
return getStartIndex(); <>=mCZ2
else ]V<-J
return nextIndex; {/}^D-
} B~TN/sd
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publicint getPreviousIndex(){ {TAw)!R~
int previousIndex = getStartIndex() - \%5MAQS
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pageSize; AhxGj+
if(previousIndex < 0) C1QV[bJK
return0; #w>~u2W
else 3z[$4L'.
return previousIndex; ue0s&WF|
} KAc >-c<
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抽象业务类 ,X/-
java代码: ?CY1]d
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