Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 DhKr;e
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 sJr5t?
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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 ^Ip3A
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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 mU{4g`Iw
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分页支持类: CSn<]%GL
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java代码: X1J;1hRUP
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package com.javaeye.common.util; 0~E 6QhV:
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import java.util.List; ]YD(`42 x
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publicclass PaginationSupport { '
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publicfinalstaticint PAGESIZE = 30; B1T5f1;uY
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privateint pageSize = PAGESIZE; pz}mF D&[
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privateList items; 0'ZYO.y
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privateint totalCount; {K.rl%_|N
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privateint[] indexes = newint[0]; 3B18dv,V
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privateint startIndex = 0; wa3F
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public PaginationSupport(List items, int L~0&
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totalCount){ P1d,8~;
setPageSize(PAGESIZE); 03E3cp"
setTotalCount(totalCount); C!UEXj`l9
setItems(items); 1MQ/r*(
setStartIndex(0); DzDj)7
} 1$["79k
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public PaginationSupport(List items, int L{PH0Jf
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totalCount, int startIndex){ GgdlVi 2
setPageSize(PAGESIZE); 1Ii| {vR
setTotalCount(totalCount); ph^4GBR
setItems(items); IRB& j%LA
setStartIndex(startIndex); %-^}45](q
} g,?\~8-c
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public PaginationSupport(List items, int $N\+,?
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totalCount, int pageSize, int startIndex){ gX/NtO%
setPageSize(pageSize); {[3YJkrM
setTotalCount(totalCount); Dc:DY:L^
setItems(items); 5EhE`k4
setStartIndex(startIndex); r{ "uv=,`
} .Vh*Z<9S4
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publicList getItems(){ i[=C_+2
return items; .~<]HAwq
} y&rY0bm
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publicvoid setItems(List items){ F$ {4X /9n
this.items = items; SI_?~Pf3k
} nVTM3Cz
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publicint getPageSize(){ (5(fd.m+_
return pageSize; s`Vf+l0
} AF[>fMI
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publicvoid setPageSize(int pageSize){ <JH9StGGc?
this.pageSize = pageSize; twv
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} YX `%A6
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publicint getTotalCount(){ 0WS|~?OR@
return totalCount; BGpk&.J
} uHrb:X!q
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publicvoid setTotalCount(int totalCount){ +E#PJ_H=F8
if(totalCount > 0){ z[biK|YL
this.totalCount = totalCount; $B ?? Ip?P
int count = totalCount / '?k' 6R$'\
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pageSize; 8_awMVAy
if(totalCount % pageSize > 0) ~h|m&XK+Q
count++; |$Xf;N37t
indexes = newint[count]; XW:%vJu^`
for(int i = 0; i < count; i++){ R\ q):,
indexes = pageSize * \)GR\~z0h
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} y {;u@o?T
}else{ KDaN-r^{%
this.totalCount = 0; 4g'}h`kh
} TMtI^mkB:
} LO}z)j~W
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publicint[] getIndexes(){ D?J#u;h~f
return indexes; k) 3s?
} \d$Rd")w
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publicvoid setIndexes(int[] indexes){ yjR)Z9t
this.indexes = indexes; kraVL%72
} %OFj
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publicint getStartIndex(){ AA_@\:w^
return startIndex; T8mY#^sW_
} 'W+i[Ep5Q
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publicvoid setStartIndex(int startIndex){ m/" J
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if(totalCount <= 0) \3:
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this.startIndex = 0; 6.UKB<sV
elseif(startIndex >= totalCount) fT
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this.startIndex = indexes ]
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[indexes.length - 1]; M0L-u
elseif(startIndex < 0) 7>KQRLw
this.startIndex = 0; [DL|Ht>
else{ tUrNp~ve,
this.startIndex = indexes ?0m?7{
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[startIndex / pageSize];
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} Bf+^O)Ns^
} YjL
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publicint getNextIndex(){ [Q=4P*G}X
int nextIndex = getStartIndex() + m"q/,}DR
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pageSize; CCn/ udp@
if(nextIndex >= totalCount) lf;~5/%wMG
return getStartIndex(); b<8q 92F
else >07shNX
return nextIndex; >waN;&>/
} k5g@myb-
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publicint getPreviousIndex(){ ;i}i5yv2
int previousIndex = getStartIndex() - ^YqbjL
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pageSize; <qr^Nyo4
if(previousIndex < 0) ,Z?m`cx
return0; #[Z<