Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 WR a4g
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 V__|NVoOm
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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 B1x# 7>K
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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 9vQI
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分页支持类: !CBvFl/v
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java代码: eSqKXmH[m
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package com.javaeye.common.util; +f}u.T_#
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import java.util.List; ~rUcko8
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publicclass PaginationSupport { G^G= .9O
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publicfinalstaticint PAGESIZE = 30; HX;JO[0
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privateint pageSize = PAGESIZE; ` XvuyH
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privateList items; $s2Y,0>I6
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privateint totalCount; W>+/N4
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privateint[] indexes = newint[0]; wM-I*<L>
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privateint startIndex = 0; 'ie+/O@G
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public PaginationSupport(List items, int qZV.~F+
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totalCount){ H% peE9>$
setPageSize(PAGESIZE); !Ojf9 6is
setTotalCount(totalCount); (bX77 Xr
setItems(items); Smt&/~7D%
setStartIndex(0); 6m~ N2^z
} 4N!Eqw
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public PaginationSupport(List items, int G1=/G
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totalCount, int startIndex){ \l_U+d,qq
setPageSize(PAGESIZE); 69/br @j%`
setTotalCount(totalCount); z0jF.ub
setItems(items); ;(F_2&he
setStartIndex(startIndex); nlq"OzcH04
} F>H5 ww9E
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public PaginationSupport(List items, int 2C@ui728
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totalCount, int pageSize, int startIndex){ Vx~N`|yY
setPageSize(pageSize); #:)yh]MP
setTotalCount(totalCount); pX/42W
setItems(items); RBA{!
setStartIndex(startIndex); CJ~gE"
} mj7Em&
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publicList getItems(){ yP~O C|Z
return items; ,.K}uW
} J"$Y`;
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publicvoid setItems(List items){ S^,q{x*T
this.items = items; &gr)U3w
} 3d>3f3D8;
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publicint getPageSize(){ <hv {,1p-r
return pageSize; s"xiGp9
} )HL[_WfY
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publicvoid setPageSize(int pageSize){ 0dKv%X#\
this.pageSize = pageSize; 7`G
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} UNC%<=
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publicint getTotalCount(){ x\R%hGt
return totalCount; 7rZE7+%]
} (QFu``ae+
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publicvoid setTotalCount(int totalCount){ sT<XZLu
if(totalCount > 0){ :&'[#%h8
this.totalCount = totalCount; w vQ.9
int count = totalCount / Rnd.<jz+Y
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pageSize; a9sbB0q-K@
if(totalCount % pageSize > 0) l2S1?*
count++; 3c|u2Pl
indexes = newint[count]; m35$4
for(int i = 0; i < count; i++){ (%\tE
indexes = pageSize * RHIGNzSz
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} 's>./Pf
}else{ EqjaD/6Y`
this.totalCount = 0; 3m]8>1e1"
} V-N`R-FSr
} 6$y$ VeW
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publicint[] getIndexes(){ |{j\7G*5
return indexes; *$Tz g!/
} .271at#-
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publicvoid setIndexes(int[] indexes){ ;&~9k?v7L
this.indexes = indexes; ndE" v"_H
} LV6BSQyQ
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publicint getStartIndex(){ h)o5j-M>4
return startIndex; G,,7.%eib=
} -h`[w:
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publicvoid setStartIndex(int startIndex){ 6z3`*B
if(totalCount <= 0) ./r#\X)dc
this.startIndex = 0; 8IQqDEY^
elseif(startIndex >= totalCount) -NL=^O$G
this.startIndex = indexes SbX#$; ks~
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[indexes.length - 1]; Ts c2;I
elseif(startIndex < 0) 5@/hqOiu
this.startIndex = 0; 2$=I+8IL
else{ QZ?%xN(4
this.startIndex = indexes EA=EcUf'
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[startIndex / pageSize]; .{t]Mc
} '1NZSiv+C?
} hha!uD~(
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publicint getNextIndex(){ J!"#N }[
int nextIndex = getStartIndex() + <%ZlJ_cM
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pageSize; @Z[XV"w|
if(nextIndex >= totalCount) k>W}9^ cK
return getStartIndex(); C<"b99\2`
else \1[v-hvK
return nextIndex; %&\DCAFk
} X6SqOb\(a
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publicint getPreviousIndex(){ `ZELw=kLL
int previousIndex = getStartIndex() - rpn&.#KS
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pageSize; rd
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if(previousIndex < 0) wVac6q
return0; QKt+Orz
else 9|5>?'CqP
return previousIndex; (+w.?l
} {Ip)%uR
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} D]B;5f
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抽象业务类 .~Y%
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java代码: r;'Vy0?AL
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/** .N~YVul[a*
* Created on 2005-7-12 {cMf_qQ
*/ r]yI5 ;
package com.javaeye.common.business; Rf0F`D k
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