Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 }9FWtXAU^1
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ?~cO\(TY["
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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 +>yspOEz
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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 dTte4lh
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分页支持类: U!YoZ?
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java代码: v?n# C
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package com.javaeye.common.util; 7Q,<h8N\5
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import java.util.List; Ak$9\Sl
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publicclass PaginationSupport { $-<yX<.
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publicfinalstaticint PAGESIZE = 30; fG{3S:TQq
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privateint pageSize = PAGESIZE; "Nz"|-3Irv
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privateList items; e-.(O8
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privateint totalCount; uzLm TmM+
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privateint[] indexes = newint[0]; $U(D*0+o/
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privateint startIndex = 0; <TSps!(#
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public PaginationSupport(List items, int J%fJF//U
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totalCount){ g;:3I\ L
setPageSize(PAGESIZE); G/w@2lYx
setTotalCount(totalCount); SCfk!GBVD
setItems(items); ETR7%0$r
setStartIndex(0); ?zVcP=p@
} dkSd
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public PaginationSupport(List items, int PTTUI
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totalCount, int startIndex){ y{XNB}E
setPageSize(PAGESIZE); *$/Go8t4u
setTotalCount(totalCount); $jBi~QqOf
setItems(items); {xP-p"?p
setStartIndex(startIndex); =c]We:I
} i?)bF!J
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public PaginationSupport(List items, int u!fZ>kS
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totalCount, int pageSize, int startIndex){ ^{NN-
setPageSize(pageSize); 0XE(v c!
setTotalCount(totalCount); /Wdrpv-%,1
setItems(items); nppSrj?
setStartIndex(startIndex); Svs&?B\}{6
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publicList getItems(){ )a+bH </'
return items; Z$35`:x&h
} w2U]RI\?2
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publicvoid setItems(List items){ ]*0t?'go'
this.items = items; !u`f?=s;
} O_5;?$[m
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publicint getPageSize(){ DnN+W
return pageSize; ")fgQ3XZ
} /N@NT/.M<
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publicvoid setPageSize(int pageSize){ P)ne^_
this.pageSize = pageSize; -'i[/{
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publicint getTotalCount(){ ]0{,P
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return totalCount; =E~_F>SD
} *6v5JH&K
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publicvoid setTotalCount(int totalCount){ nYj7r*e[
if(totalCount > 0){ q"-Vh,8h
this.totalCount = totalCount; ~fO#En
int count = totalCount / d 5hx%M
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pageSize; XU}" h&>
if(totalCount % pageSize > 0) T8j<\0WW
count++; V7+/|P_
indexes = newint[count]; ^q<EnsY
for(int i = 0; i < count; i++){ }5X.*wz
indexes = pageSize * >PGsY[N
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} -3XnUGK
}else{ ~Oi.bP<,
this.totalCount = 0; 3V]psZS
} 4XeO^#
} E/E|*6R
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publicint[] getIndexes(){ UG<<.1JL
return indexes; WkoYkkuzj
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publicvoid setIndexes(int[] indexes){ %\%&1
this.indexes = indexes; mn\GLR.
} Qb:.WMj[q+
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publicint getStartIndex(){ >rFM8P(
return startIndex; ==bT0-M.~
} @_h=,g#@
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publicvoid setStartIndex(int startIndex){ s1T}hp
if(totalCount <= 0) .GW)"`HbU
this.startIndex = 0; eBe5H
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elseif(startIndex >= totalCount) "fSK7%BP
this.startIndex = indexes TI7)yxa=`
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[indexes.length - 1]; S @)P#
elseif(startIndex < 0) {_4zm&
this.startIndex = 0;
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else{ `1R[J4e
this.startIndex = indexes +ZRm1q
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[startIndex / pageSize]; ay28%[Q b4
} o1Wf#Zq
} *(VwD)*
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publicint getNextIndex(){ xf{=~j/L
int nextIndex = getStartIndex() + 4{"
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pageSize; "l6Ob
if(nextIndex >= totalCount) hrbeTtqi
return getStartIndex(); yGb^k R}d
else "K*^%{
return nextIndex; c* )PS`]t
} &Fch{%S>
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publicint getPreviousIndex(){ m=]}Tn
int previousIndex = getStartIndex() - *@&V=l
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pageSize; A@ w9_qo
if(previousIndex < 0) +#g4Crb
return0; 8noo^QO
else xllmF)]*Y
return previousIndex; 7L!q{%}
} )/t=g
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} 'ExQG$t
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抽象业务类 _[J>GfQd
java代码:
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/** Dn;$4Dak(
* Created on 2005-7-12 y Xi$w.gr
*/ 6 ;}FZ
package com.javaeye.common.business; U6_GEBz~y
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import java.io.Serializable; <