Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 0@[]l{N
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 <z+5+h|^
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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 jh\L)a*
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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 $-'p6^5
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分页支持类: hs< )<
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java代码: :G\f(2@
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package com.javaeye.common.util; yUcWX bT@
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import java.util.List; ~YO99PP
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publicclass PaginationSupport { ;2-%IA,
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publicfinalstaticint PAGESIZE = 30; |%.V{vgP7
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privateint pageSize = PAGESIZE; K9h{sC
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privateList items; M:i;;)cq
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privateint totalCount; @*'$QD,
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privateint[] indexes = newint[0]; X;/~d>@
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privateint startIndex = 0; 2;N)>[3*J
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public PaginationSupport(List items, int #wn`choT'
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totalCount){ f/Cf2
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setPageSize(PAGESIZE); Tov !X8p
setTotalCount(totalCount); S{_i1'
setItems(items); qBL>C\V +
setStartIndex(0); #)hc^gIO&<
} G*.}EoA
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public PaginationSupport(List items, int @*kQZRGK7
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totalCount, int startIndex){ KneCMFy
setPageSize(PAGESIZE); a(-
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setTotalCount(totalCount); C{7
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setItems(items); _qwKFC
setStartIndex(startIndex); X}Heaqn
} /, T@/
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public PaginationSupport(List items, int @}sxA9a
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totalCount, int pageSize, int startIndex){ b7&5>Q/g
setPageSize(pageSize); [k qx%4q)
setTotalCount(totalCount); wJ
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setItems(items); (Q~ p"Ch
setStartIndex(startIndex); d'Cn] <
} iupuhq$]
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publicList getItems(){ xx[XwN;
return items; '*K}$+l
} "tax
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publicvoid setItems(List items){ 701ei;
this.items = items; -js:R+C528
} ;VVKn=X=S=
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publicint getPageSize(){ `a*_b9
return pageSize; 7OSk0%Q,
} Q7uhz5oZ
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publicvoid setPageSize(int pageSize){ t2V|moG
this.pageSize = pageSize; $J]VY;C!
} ,ru2C_LQ
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publicint getTotalCount(){ T \Zf`.mt
return totalCount; |^: A,%>
} l\+^.ezD
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publicvoid setTotalCount(int totalCount){ Y|%s =0M
if(totalCount > 0){ F\LAw#IJ
this.totalCount = totalCount; J0xV\O
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int count = totalCount / &z'NQ!uV
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pageSize; &d1|B`gL|
if(totalCount % pageSize > 0) OUo N
count++; y; oPg4
indexes = newint[count]; :zN{>,sC
for(int i = 0; i < count; i++){ XEK% \o}
indexes = pageSize * T["(wPrt
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} v[-.]b*5A$
}else{ tb#9TF
this.totalCount = 0; LBO3){=J
} cOz8YVR-
} ~=xiMB;oH
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publicint[] getIndexes(){ Fog4m=b`g
return indexes; "gaurr3
} $hND!T+;
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publicvoid setIndexes(int[] indexes){ u`K)dH,
this.indexes = indexes; q.xt%`@aA
} ~8fy
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publicint getStartIndex(){ e+'PRVc
return startIndex; gXrXVv<)yw
} qIXo_H&\C
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publicvoid setStartIndex(int startIndex){ x}\_o< d
if(totalCount <= 0) 32#|BBY
this.startIndex = 0; M`_RkDmy<
elseif(startIndex >= totalCount) 1a_R8j
this.startIndex = indexes D7v-+jypp
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[indexes.length - 1]; cOhx
elseif(startIndex < 0) ,drbj.0-
this.startIndex = 0; g4p-$WyT8>
else{ }02#[vg
this.startIndex = indexes abs\Ku9
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[startIndex / pageSize]; g3fxf(iY(
} c%?31t
} hU:
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publicint getNextIndex(){ )uG7 DR
int nextIndex = getStartIndex() + /RWQ+Zf-Y]
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pageSize; [Un~]E.'J
if(nextIndex >= totalCount) roiUVisq*
return getStartIndex(); `lI(SS]w
else 1]DPy+
return nextIndex; Oq[2<ept
} cu~dbv6H
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publicint getPreviousIndex(){ \my5E\
int previousIndex = getStartIndex() - oSAO0h>0N
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pageSize; M&93TQU-
if(previousIndex < 0)
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return0; B\ <;e
else JI)@h 4b
return previousIndex; 9Q*T'+V
} cN{(XmX5n
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} v@qU<\Y>
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抽象业务类 g`n5-D@3
java代码: `]T#uP<u
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/** .+.'TY--
* Created on 2005-7-12 &/\Q 6$a
*/ WP}NHz4H
package com.javaeye.common.business; mdNIC
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import java.io.Serializable; '{-7%>`bn
import java.util.List; G\PFh&
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import org.hibernate.Criteria; 5`3Wua
import org.hibernate.HibernateException; >Q-"-X1
import org.hibernate.Session; ge[hAI2I
import org.hibernate.criterion.DetachedCriteria; uXm_ pQpF
import org.hibernate.criterion.Projections; o<\uHr3
import ~LG<Uu
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org.springframework.orm.hibernate3.HibernateCallback; ';vLj1v
import 9&O7