Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 0tb%h[%,M
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ]q pLaBD
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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 RM|2PG1m
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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 '^10sf`"
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分页支持类: J<;@RK,c_
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java代码: U_[<,JE
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package com.javaeye.common.util; 8gn12._x
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import java.util.List; @]F1J
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publicclass PaginationSupport { CyXFuk!R
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publicfinalstaticint PAGESIZE = 30; /?*GJN#
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privateint pageSize = PAGESIZE; O3K TKL]
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privateList items; s{9G//
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privateint totalCount; eEl71
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privateint[] indexes = newint[0]; CFTw=b@
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privateint startIndex = 0; Cno+rmsfT
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public PaginationSupport(List items, int
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totalCount){ HE|XDcYO
setPageSize(PAGESIZE); KBOp}MEz
setTotalCount(totalCount); !*G%vOa
setItems(items); N(Sc!rX
setStartIndex(0); +oev NM
} slTE.
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public PaginationSupport(List items, int r\T'_wo
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totalCount, int startIndex){ SUC'o"
setPageSize(PAGESIZE); (|9t+KP
setTotalCount(totalCount);
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setItems(items); 8yDe{
setStartIndex(startIndex); s
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} v2l*n
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public PaginationSupport(List items, int 8vqx}2
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totalCount, int pageSize, int startIndex){ |}><)}
setPageSize(pageSize); (Cb;=:3G
setTotalCount(totalCount); bYUG4+rD
setItems(items); mgE
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setStartIndex(startIndex); (L<qJd1Q
} XY^]nm-{I
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publicList getItems(){ 0,whTnH|
return items; hQ ?zc_3
} yu>)[|-
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publicvoid setItems(List items){ ZM16 ~k
this.items = items; 9? y&/D5O
} HA74s':FN
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publicint getPageSize(){ |Kb
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return pageSize; UZpQ%~/
} l;d4Le
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publicvoid setPageSize(int pageSize){ [vqf hpz
this.pageSize = pageSize; H<") )EJI
} "`NAg
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publicint getTotalCount(){ " GY3sam
return totalCount; !bs5w_@
} mw&'@M_(7
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publicvoid setTotalCount(int totalCount){ x[=,$;o+
if(totalCount > 0){ 6UI6E)g
this.totalCount = totalCount; A0,h7<i
int count = totalCount / a<J<Oc!
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pageSize; lAR1gHhJ
if(totalCount % pageSize > 0) V :/v
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count++; I?RUVs
indexes = newint[count]; I?
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for(int i = 0; i < count; i++){ iG#92e4
indexes = pageSize * vnWt8?)]^
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} RN&6z"|jR
}else{ EM(%|#
this.totalCount = 0; ^5Zka!'X2Z
} .'>d7
} 7g$*K0m`
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publicint[] getIndexes(){ OLo?=1&;;
return indexes; n&,X']z.
} aJ@lT&.
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publicvoid setIndexes(int[] indexes){ $xCJ5M4
this.indexes = indexes; %(|-+cLW+
} 8DX5bB
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publicint getStartIndex(){ +/
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return startIndex; k[)/,1
} AZf69z
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publicvoid setStartIndex(int startIndex){ |ZC'a!
if(totalCount <= 0) T% GR{mp
this.startIndex = 0; <Sr:pm
elseif(startIndex >= totalCount) B}nT>Ub
this.startIndex = indexes &dPUd~&EL
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[indexes.length - 1]; 9oIfSr,y
elseif(startIndex < 0) Sk:x.oOZ
this.startIndex = 0; bI^F(
else{ -Kw7!
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this.startIndex = indexes Kn1T2WSAg
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[startIndex / pageSize]; \r9E6LLX'
} #l h'
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} M N (o
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publicint getNextIndex(){ LcT;7yv
int nextIndex = getStartIndex() + F|cli
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pageSize; 5{WvV%
if(nextIndex >= totalCount) EI)2c.A
return getStartIndex(); 2'@D0L
else '
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return nextIndex; }u8g7Nj
} @REMl~"D5
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publicint getPreviousIndex(){ R#i`H(N
int previousIndex = getStartIndex() - byTHSRt
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pageSize; YI;MS:Qj
if(previousIndex < 0) 6Eus_aP
return0; jcjl q-x
else 7{l~\]6d
return previousIndex; C4GkFD
} r i)`e
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} _2)QL
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抽象业务类 Gx4{ 9
java代码: )TyP{X>
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/** z_=V6MDM
* Created on 2005-7-12 )||CU]"b?
*/ H:
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package com.javaeye.common.business; g7lPQ_A*
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import java.io.Serializable; 1|AY&u%fiP
import java.util.List; fz?woVn
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import org.hibernate.Criteria; }:u-l3e
import org.hibernate.HibernateException; ?G<?:/CU
import org.hibernate.Session; B&B