Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Ba!`x<wa
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 s13Iu#
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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 6L'cD1pu
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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 (:M6*RV
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分页支持类: rQN+x|dKMb
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java代码: NM[w =
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package com.javaeye.common.util; 9Ni$nZN
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import java.util.List; DCP"
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publicclass PaginationSupport { "R4~
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publicfinalstaticint PAGESIZE = 30; Lu1>A {et
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privateint pageSize = PAGESIZE; 3_vggK%
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privateList items; tul5:}x3
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privateint totalCount; Zff-Hl
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privateint[] indexes = newint[0]; %6kD^K-
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privateint startIndex = 0; N[dhNK"
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public PaginationSupport(List items, int 'Kp|\Tr
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totalCount){ tv\P$|LV`8
setPageSize(PAGESIZE); LW ntZ.
setTotalCount(totalCount); ~cU,3g
setItems(items); B6OggJ9Iq
setStartIndex(0); O#cXvv]Z*
} z$%ntN#eNA
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public PaginationSupport(List items, int YC*S;q
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totalCount, int startIndex){ RrKs!2sCT
setPageSize(PAGESIZE); sL+/Eeb` c
setTotalCount(totalCount); /!jn$4fd:
setItems(items); 9QWS[E4
setStartIndex(startIndex); ;t[<!
} evu @uq
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public PaginationSupport(List items, int v<3i ~a
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totalCount, int pageSize, int startIndex){ GMB%A
setPageSize(pageSize); yBs
setTotalCount(totalCount); Il*wVNrZI
setItems(items); Q9FY.KUM
setStartIndex(startIndex); {Qlvj.Xw
} ;Q?
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publicList getItems(){ rs 7R5 F
return items; A%%WPBk{O
} rw8db'
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publicvoid setItems(List items){ wzP>Cq
this.items = items; !oM1
} }3M\&}=8
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publicint getPageSize(){ *hFT,1WE=+
return pageSize; DQKhR sC
} LD]XN'?"W
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publicvoid setPageSize(int pageSize){ Ur]5AJ
this.pageSize = pageSize; AGPZd9
} !3?HpR/nV
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publicint getTotalCount(){ Eh8.S)E
return totalCount; j
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} #{i\t E
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publicvoid setTotalCount(int totalCount){ PlTY^N6Hn
if(totalCount > 0){ m|=/|Hm
this.totalCount = totalCount; el- %#0
int count = totalCount / XZIj' a0d
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pageSize; 70*Y4'u}A
if(totalCount % pageSize > 0) GZ*cV3Y`&
count++; Q6"r^wWx
indexes = newint[count]; I9k o*f
for(int i = 0; i < count; i++){ 8Qek![3^
indexes = pageSize * f>l}y->-Ug
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} v:s~Y
}else{ [ V/*{Z
this.totalCount = 0; b.;F)(
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} mi<V(M~p
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publicint[] getIndexes(){ V
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return indexes; n#bC,
} TJ2$
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publicvoid setIndexes(int[] indexes){ 80
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this.indexes = indexes; ndW??wiM
} 9M<qk si
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publicint getStartIndex(){ W@#)8];>
return startIndex; krI<'m;a
} ~/iE
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publicvoid setStartIndex(int startIndex){ ] 6M- s
if(totalCount <= 0) F|%[s|s
this.startIndex = 0; fZT=q^26
elseif(startIndex >= totalCount) l*b3Mg
this.startIndex = indexes w+*Jl}&\
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[indexes.length - 1]; fh}\#WE"
elseif(startIndex < 0) WPpl9)Qc
this.startIndex = 0; v#nYH?+~mJ
else{ EcBSi995dj
this.startIndex = indexes `NyvJt^<
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[startIndex / pageSize]; +hV7o!WxC
} b":cj:mxL
} YM/GSSq
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publicint getNextIndex(){ Th'6z#h:U
int nextIndex = getStartIndex() + gtVI>D'(W
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pageSize; vX/~34o]\
if(nextIndex >= totalCount) OUS@)Tyh
return getStartIndex(); Jc(tV(z
else *<"xF'C
return nextIndex; @/E5$mX`
} WFsa8qv
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publicint getPreviousIndex(){ Ef:.)!;jy
int previousIndex = getStartIndex() - 7b \Hbg Z
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pageSize; ]B5q v6
if(previousIndex < 0) ?b:l.0m
return0; egK,e?~
else aOA;"jR1
return previousIndex; +tES:3Pi
} =Y?M#3P.I
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} nO,<`}pV
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抽象业务类 A"2k,{d
java代码: q}U^H
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/** uIiE,.Uu}
* Created on 2005-7-12 v<HhB.t.
*/ K8ecSs}}J
package com.javaeye.common.business; b'3w.%^
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import java.io.Serializable; /{."*jK
import java.util.List; <A; R%\V
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import org.hibernate.Criteria; wFnI M2a,
import org.hibernate.HibernateException; ?m}vDd
import org.hibernate.Session; cX9
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import org.hibernate.criterion.DetachedCriteria; 4
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import org.hibernate.criterion.Projections; p.SEW5
import &S>m+m'
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org.springframework.orm.hibernate3.HibernateCallback; am]$`7R5d
import %D)W~q-g
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org.springframework.orm.hibernate3.support.HibernateDaoS soRt<