Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 a&?SRC'x
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 +kMVl_`V
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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 !P_8D*^9
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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 Zs$Qo->F
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分页支持类: 4=Wtv/
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java代码: ]+!{^h$
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package com.javaeye.common.util; MHm=X8eg
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import java.util.List; d,c8ks(
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publicclass PaginationSupport { G>>`j2:y
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publicfinalstaticint PAGESIZE = 30; |\Zs oA
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privateint pageSize = PAGESIZE; fW'@+<b
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privateList items; Ji#"PE/Pt
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privateint totalCount; {D6E@a
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privateint[] indexes = newint[0]; "\n,vNk
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privateint startIndex = 0; aT]G&bR?
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public PaginationSupport(List items, int CSA.6uIT
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totalCount){ |UGmIm%
setPageSize(PAGESIZE); "<e<0::
setTotalCount(totalCount); E!,+#%O>
setItems(items); B5nzkJV<X
setStartIndex(0); qG=>eRR
} /^F_~.u{
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public PaginationSupport(List items, int *b$8O
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totalCount, int startIndex){ )t$<FP
setPageSize(PAGESIZE); 5yh:P3 /
setTotalCount(totalCount); zE~{}\J
setItems(items); XMR$I&;G8
setStartIndex(startIndex); >I~$h,
} Nx%]dOa
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public PaginationSupport(List items, int 7jj.maK
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totalCount, int pageSize, int startIndex){ &pL.hM^
setPageSize(pageSize); :75$e%'A
setTotalCount(totalCount); gH0'
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setItems(items); 7lC );
setStartIndex(startIndex); )r9lT*z
} \hm;p
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publicList getItems(){ e d=pRb
return items; s!vvAD;\
} \NiW(!Z}
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publicvoid setItems(List items){ {pV\]E\]
this.items = items; x344}\
} zKY 9'y
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publicint getPageSize(){ 3N5un`K7
return pageSize; y4V~fg;
} ke+3J\;>
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publicvoid setPageSize(int pageSize){ q{fgsc8v\
this.pageSize = pageSize; j56#KNAha
} :c*_W
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publicint getTotalCount(){ ^PNE6
return totalCount; xg|\\i
} (O&R-5m
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publicvoid setTotalCount(int totalCount){ 1\[En/6
if(totalCount > 0){ K4r"Q*h
this.totalCount = totalCount; B7*^rbI:X
int count = totalCount / h()Ok9]
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pageSize; )\k({S
if(totalCount % pageSize > 0) fP:n=A{
count++; G$eA(GE
indexes = newint[count]; RS8tE(
for(int i = 0; i < count; i++){ q_hkI]
indexes = pageSize * d*Wg>8|
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} |8|_^`
}else{ w%3R[Kdzk
this.totalCount = 0; ~6<'cun@x
} :EkhF6B/
} Q^B !^_M
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publicint[] getIndexes(){ ^|P/D
return indexes; -$x5[6bN
} ;Nd,K
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publicvoid setIndexes(int[] indexes){ 2!}:h5
this.indexes = indexes; 2b[R^O}
} S4salpz
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publicint getStartIndex(){ }[$qn|
return startIndex; $4*wK@xu
} .# Jusd
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publicvoid setStartIndex(int startIndex){ 6]Vf`i
if(totalCount <= 0) &f;<[_QI=
this.startIndex = 0; RTLA*
elseif(startIndex >= totalCount) $*KM%M6
this.startIndex = indexes daX$=n
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[indexes.length - 1]; PQ#zF&gL9t
elseif(startIndex < 0) ~"Q24I
this.startIndex = 0; zL%ruWNG
else{ LGau!\
this.startIndex = indexes )6t=Bel
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[startIndex / pageSize]; u>K(m))5W3
} Im<i.a
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} RqONVytx
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publicint getNextIndex(){ "u H VX|`
int nextIndex = getStartIndex() + :/.SrkN(A7
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pageSize; .#4;em%7
if(nextIndex >= totalCount) 'a^'f]"
return getStartIndex(); )R- e^Cb
else ) ]y^RrD
return nextIndex; L]syDn
} 8F;r$i2
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publicint getPreviousIndex(){ <Rno;
int previousIndex = getStartIndex() - GY~Q) Z
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pageSize;
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if(previousIndex < 0) m?@0Pf}xa
return0; g.V{CJ*V
else ^wtr~D|
return previousIndex; pE~>k:
} (Cc!Iw'0M
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} nXg:lCI-uu
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