Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 P15* VPy
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 AINFua4 A
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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 Qqhb]<z
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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 @aD~YtL"n
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分页支持类: +|"n4iZ!)
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java代码: &!YH"{b
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package com.javaeye.common.util; '3u]-GU2_
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import java.util.List; <9@]|
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publicclass PaginationSupport { ][5p.owJse
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publicfinalstaticint PAGESIZE = 30; ?jn6Op
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privateint pageSize = PAGESIZE; $9i5<16
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privateList items; 5B.??;xtaV
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privateint totalCount; 7fzyD
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privateint[] indexes = newint[0]; 5 EuJ
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privateint startIndex = 0; ^R'!\m|FR
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public PaginationSupport(List items, int ccRk4xR
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totalCount){ T17LYHIT
setPageSize(PAGESIZE); y yR8VO{
setTotalCount(totalCount); 8m[L]6F(-z
setItems(items); s=~7m.m
setStartIndex(0); yoY)6cn@
} DF[b?
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public PaginationSupport(List items, int Jx9%8Ek
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totalCount, int startIndex){ P_lcX;O
setPageSize(PAGESIZE); gcCYXPZp
setTotalCount(totalCount); 6dy4{i
setItems(items); )B&<Bk+
setStartIndex(startIndex); 8kc'|F\
} .x$T al
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public PaginationSupport(List items, int ;Kq?*H
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totalCount, int pageSize, int startIndex){ }~CZqIP
setPageSize(pageSize); P_g0G#`4
setTotalCount(totalCount); |ShRxE3@'
setItems(items); fG$.DvJuK
setStartIndex(startIndex); OK J%M]<
} {uM{5GSL
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publicList getItems(){ 3cFLU^
return items; '/*c Yv45
} c^WBB$v
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publicvoid setItems(List items){ f-nC+
this.items = items; tWOze, N
} 'C>S yU
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publicint getPageSize(){ }qdJ8K
return pageSize; LXF%~^^@d
} 9la~3L_g
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publicvoid setPageSize(int pageSize){ ,h`D(,?X
this.pageSize = pageSize; [}>6n72gNh
} rtF6Lg
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publicint getTotalCount(){ `LU,uz
return totalCount; uv!qE1z@':
} ~S>ba']
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publicvoid setTotalCount(int totalCount){ #R PB;#{
if(totalCount > 0){ W!B4<'Fjc
this.totalCount = totalCount; wP':B
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int count = totalCount / S^VV^O5 ^
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pageSize; : 8<^rP
if(totalCount % pageSize > 0) X/7_mU>aKT
count++; 3M*[a~
indexes = newint[count]; *K.7Zf0
for(int i = 0; i < count; i++){ [f(^vlK
indexes = pageSize * ~wg^>!E
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} K y2xWd8
}else{ wXGFq3`
this.totalCount = 0; 1WN93SQ=
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publicint[] getIndexes(){ /)4r2 x
return indexes; ,T~5iLKY
} >qvD39w
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publicvoid setIndexes(int[] indexes){ W1`ZS*12D
this.indexes = indexes; BvR3Oi@Wc
} ~2}ICU5
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publicint getStartIndex(){ 7Ej#7\TB]
return startIndex; qAik$.
} XRz6Yf(/
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publicvoid setStartIndex(int startIndex){ hD"~
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if(totalCount <= 0) SZD2'UaG
this.startIndex = 0; h5keYBA
elseif(startIndex >= totalCount) 9d}nyJ
this.startIndex = indexes [te7uZv-
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[indexes.length - 1]; ]LOtwY
elseif(startIndex < 0) IEf^.Z
this.startIndex = 0; :{Z^ _;Tf
else{ h*Tiv^a
this.startIndex = indexes ]qHO{b4k
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[startIndex / pageSize]; Q^w]Nj(e_
} ?R:Hj=.
} ve^MqW&S
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publicint getNextIndex(){ Li^!OHro.
int nextIndex = getStartIndex() + c6)zx
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pageSize; O^%ace1
if(nextIndex >= totalCount) <!>}t a
return getStartIndex(); %~2m$#)
else ^v|!(h\ZC
return nextIndex; Hv*O9!cC
} x,_Ucc.
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publicint getPreviousIndex(){ 5&@ U T
int previousIndex = getStartIndex() - +0 |0X {v
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pageSize; Z+4Oaf!
if(previousIndex < 0) FCJ(D!
return0; t O>qd#I
else Lpf=VyqC
return previousIndex; Nq6CvDXi
} 7~f6j:{|z
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抽象业务类 !:{_<