Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 %8S!l;\H5
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 9.vHnMcq
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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 CIO&VK
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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 ZuBVq
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分页支持类: UL"JwqD
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java代码: KZ/}Iy>As
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package com.javaeye.common.util; ``>WFLWTn
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import java.util.List; BE%#4c.b
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publicclass PaginationSupport { (doFYF~w
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publicfinalstaticint PAGESIZE = 30; ywi
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privateint pageSize = PAGESIZE; ;}^Pfm8
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privateList items; hj0uv6t.c
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privateint totalCount; s-
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privateint[] indexes = newint[0]; Z{u*vUC&
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privateint startIndex = 0; S`"IM?
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public PaginationSupport(List items, int ;uR8pz e
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totalCount){ b$.N8W%
setPageSize(PAGESIZE); 6j_
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setTotalCount(totalCount); 1Voo($q.
setItems(items); fv<($[0
setStartIndex(0); vP88%I;
} >UR-37g{p
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public PaginationSupport(List items, int 2JtGS-t
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totalCount, int startIndex){ \*d@_oQ$
setPageSize(PAGESIZE); 1*;?uC\
setTotalCount(totalCount); j G{xFz>x
setItems(items); +,c;Dff
setStartIndex(startIndex); hMi!H.EX.
} :~U1JAs$
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public PaginationSupport(List items, int ,ulTZV
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totalCount, int pageSize, int startIndex){ eJ2[=L'
setPageSize(pageSize); h/eKVRGs"
setTotalCount(totalCount); VY~WkSi[<
setItems(items); /c__{?go
setStartIndex(startIndex); /EKfL\3
} D
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publicList getItems(){ V,|9$A;
return items; $0iz;!w
} w?<:`
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publicvoid setItems(List items){ -[Zau$;J<
this.items = items; Y6^lKw
} ckN/_ u3
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publicint getPageSize(){ Kq6m5A]z
return pageSize; r/3!~??x
} OkA-=M)RI:
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publicvoid setPageSize(int pageSize){ G?>~w[#mQR
this.pageSize = pageSize; J6NQ5S\
} >i@gR
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publicint getTotalCount(){ Fk=_Q
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return totalCount; e0>@Yp[Kd
} Me5umA
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publicvoid setTotalCount(int totalCount){ 2MB\!fh
if(totalCount > 0){ 8q_3*++D
this.totalCount = totalCount; owYfrf3ZLX
int count = totalCount / >Z<ym|(T*
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pageSize; &WvJg#f
if(totalCount % pageSize > 0) '#u2q=n4*
count++; bis/Nfr]
indexes = newint[count]; iWQBo>x
for(int i = 0; i < count; i++){ U|U/B
indexes = pageSize * ) : Q5u6
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} jCKRoao
}else{ v`beql
this.totalCount = 0; gY*Cl1 Iz
} Ra~n:$tg2
} ]2b" oHg
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publicint[] getIndexes(){ SL@Vk(
return indexes; fVR ~PG0
} zL)S,
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publicvoid setIndexes(int[] indexes){ NF&\<2kX
this.indexes = indexes; 2Ni{wg"
} VFA1p)n
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publicint getStartIndex(){ -uO< ]
return startIndex; rhNdXYY>
} 9n8;eE08
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publicvoid setStartIndex(int startIndex){ {} vl^b
if(totalCount <= 0) #c/v2
this.startIndex = 0; \4zvknk<
elseif(startIndex >= totalCount) r]0 o
this.startIndex = indexes *xL#1
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[indexes.length - 1]; L)B?p!cdLT
elseif(startIndex < 0) o L6[i'H|
this.startIndex = 0; u$<FKp;I
else{ o~es>;
this.startIndex = indexes z{!wQ~
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[startIndex / pageSize]; B*DH^";t
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} /xsa-F
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publicint getNextIndex(){ Wuc,Cjm9(!
int nextIndex = getStartIndex() + QfwGf,0p
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pageSize; ^T^U:Zdq
if(nextIndex >= totalCount) {p6",d."N&
return getStartIndex(); |S>nfL{TQe
else 3t%uUkXl
return nextIndex; o2Pj|u*X
} *jA%.F
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publicint getPreviousIndex(){ UK&E#i
int previousIndex = getStartIndex() - .iew5.eB+
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pageSize; f<kL}B+,Og
if(previousIndex < 0) <;U"D.'
return0; O5k's
else ;?n*w+6<
return previousIndex; $T3/*xN
} 5-]%D(y
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} 4eIu@
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抽象业务类 If4YqBG
java代码: M6DyOe<
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/** cRU.
* Created on 2005-7-12 h)A+5^:^
*/ A]=?fyPh{'
package com.javaeye.common.business; |ZRl.C/e
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import java.io.Serializable; 9lA YCsX
import java.util.List; bk^ :6>{K
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import org.hibernate.Criteria; 'u696ED4
import org.hibernate.HibernateException; +m>Kb edl
import org.hibernate.Session; GD< Afni
import org.hibernate.criterion.DetachedCriteria; $L`7(0U-
import org.hibernate.criterion.Projections; bWMM[pnL
import lbv, jS
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org.springframework.orm.hibernate3.HibernateCallback; ~r=TVHjqi
import |:
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org.springframework.orm.hibernate3.support.HibernateDaoS >Zmpsa+
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upport; m+uh6IqN./
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import com.javaeye.common.util.PaginationSupport; u)Y#&q