Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 v=i[s
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 /Rx%}~x/m
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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 kdQ=%
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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 RX=C)q2c
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分页支持类: A7+eWg{
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java代码: e@Z(z^V
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package com.javaeye.common.util; u~1[nH:
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import java.util.List; !z(POK
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publicclass PaginationSupport { Bu>srX9f
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publicfinalstaticint PAGESIZE = 30; ;'}1
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privateint pageSize = PAGESIZE; @ L% 3}
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privateList items; /Kwo^Q{
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privateint totalCount; exTpy
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privateint[] indexes = newint[0]; lp!@uoN^T
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privateint startIndex = 0; <z %zzc1s
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public PaginationSupport(List items, int *@cXBav/<
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totalCount){ cEve70MV
setPageSize(PAGESIZE); h+,zfVJu
setTotalCount(totalCount); 2B=yT8
setItems(items); s#)fnNQ,
setStartIndex(0); @]Iku 6d-
}
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public PaginationSupport(List items, int #kA/,qyM
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totalCount, int startIndex){ SL pd~ZC?
setPageSize(PAGESIZE); *;Hvx32I
setTotalCount(totalCount); vs7Hg)F
setItems(items); <3O>
setStartIndex(startIndex); mJ#u] tiL
} _;v4]MU
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public PaginationSupport(List items, int {]Nvq9?
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totalCount, int pageSize, int startIndex){ V. =! ^0'A
setPageSize(pageSize); ;[ pyKh
setTotalCount(totalCount); Rzj5B\+Rk(
setItems(items); A$;U*7TJuO
setStartIndex(startIndex); -XkCbxZ
} dL |D
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publicList getItems(){ (/v(.t
return items; 9{'GrL
} Jq<&`6hn
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publicvoid setItems(List items){ $ze%!C
this.items = items; (](:0H
} ,m8l
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publicint getPageSize(){ B r`Xw^S
return pageSize; &h`s:Y
} [Sg1\UTl
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publicvoid setPageSize(int pageSize){ X4Q?]{
this.pageSize = pageSize; ] 8+!
} 2?z3s|+[
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publicint getTotalCount(){ 9K@`n:Rw
return totalCount; BC Jo/m
} (}V.xi
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publicvoid setTotalCount(int totalCount){ Ldf<
if(totalCount > 0){ =Qsh3b&<P
this.totalCount = totalCount; vfK^^S
int count = totalCount / g"`BNI]Qp
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pageSize; _o'ii
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if(totalCount % pageSize > 0) #:3ca] k
count++; =A$5~op%
indexes = newint[count]; /v
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for(int i = 0; i < count; i++){ O7g
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indexes = pageSize * ;;2XLkWu
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} Cf91#%:cN
}else{ b" 1a7
this.totalCount = 0; FF0N{bY
} 3yszfWr
} D\}^<HW
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publicint[] getIndexes(){ *Cz>r}W
return indexes; dPc*!xrq
} %nSm 32/t3
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publicvoid setIndexes(int[] indexes){ 4&r[`gL
this.indexes = indexes; Xx~OZ^t&Vn
} hxP%m4xF +
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publicint getStartIndex(){ }rj.N98
return startIndex; 4c_TrNwP
} V:fz
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publicvoid setStartIndex(int startIndex){ yH|[K=?S[
if(totalCount <= 0) IlVz 5#R
this.startIndex = 0; e=<knKc
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elseif(startIndex >= totalCount) GPONCL8(0
this.startIndex = indexes E2 Q[
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[indexes.length - 1]; j1Fy'os"!
elseif(startIndex < 0) uUB,OmLN
this.startIndex = 0; v*Ds:1"H-I
else{ 4w\
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this.startIndex = indexes )a
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[startIndex / pageSize]; Dt%Gv0
} \T`InBbf
}
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publicint getNextIndex(){ P"Lk(gY
int nextIndex = getStartIndex() + wzVx16Rvc
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pageSize; Bi;D d?.
if(nextIndex >= totalCount) =iW!Mq
return getStartIndex(); 5%BexIk
else [fx1H~T<
return nextIndex; ,pM~Phmp
} J -tOO
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publicint getPreviousIndex(){ >Akrbmh5
int previousIndex = getStartIndex() - UCG8=+t5T
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pageSize; a"SH_+T{
if(previousIndex < 0) 2~dUnskyy
return0; 7?!A~Seo|
else JL[$B1
return previousIndex; m?'H7cFR
}
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抽象业务类 =lT~
java代码: I,TJV)B
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/** R % [ZQK
* Created on 2005-7-12 ~A@T_*0
*/ _&V%idz!0
package com.javaeye.common.business; &.XlXihnt
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import java.io.Serializable; 8=QOp[w
import java.util.List; /kV3[Rw+
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import org.hibernate.Criteria; ZByxC*Cz
import org.hibernate.HibernateException; B7PkCS&X
import org.hibernate.Session; 7k,pUC-w7c
import org.hibernate.criterion.DetachedCriteria; ,;;7+|`
import org.hibernate.criterion.Projections; NwAvxN<R(f
import jf&B5>-x
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org.springframework.orm.hibernate3.HibernateCallback; 9{[I|
import Lzmdy0!'
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org.springframework.orm.hibernate3.support.HibernateDaoS z=mH\!
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upport; F6
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