Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 *+lnAxRa?
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 o#Rao#bD:
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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 5qR76iH)/
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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 ayHI(4!$j
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分页支持类: jZe]zdml
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java代码: hFyN|Dqhds
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package com.javaeye.common.util; qS+'#Sn
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import java.util.List; :.DCRs$Q
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publicclass PaginationSupport { YtxBkKiJ2V
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publicfinalstaticint PAGESIZE = 30; o!wz:|\S
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privateint pageSize = PAGESIZE; ^~eT#Y8
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privateList items; 82efqzT
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privateint totalCount; .@ /5Ln
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privateint[] indexes = newint[0]; N
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privateint startIndex = 0; (;V]3CtU*
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public PaginationSupport(List items, int %[Ia#0'Y@
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totalCount){ jKM-(s!(
setPageSize(PAGESIZE); VDCrFZ!]
setTotalCount(totalCount); *M6M'>Tin
setItems(items); KvkiwO(
setStartIndex(0); E':y3T@."
} g6;O)b
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public PaginationSupport(List items, int IgR_p7['.
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totalCount, int startIndex){ BY32)8SH
setPageSize(PAGESIZE); ]e7D""
setTotalCount(totalCount); +SZ#s:#SE
setItems(items); OKxPf]~4E
setStartIndex(startIndex); ?Ju=L|
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public PaginationSupport(List items, int sW@4r/F>:D
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totalCount, int pageSize, int startIndex){ 6TlkPM$~2
setPageSize(pageSize); 'hg, W]
setTotalCount(totalCount); <b{Le{QJ*
setItems(items); eWW\m[k]}
setStartIndex(startIndex); oIQor%z
} ~Se/uL;*
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publicList getItems(){ on\0i{0l8
return items; T1\.~]-msb
} ZWh:&e(
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publicvoid setItems(List items){ 6(<M.U_ft
this.items = items; b?h"a<7
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publicint getPageSize(){ d+ql@e ]
return pageSize; /$/\$f$
} OB;AgE@
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publicvoid setPageSize(int pageSize){ V~NS<!+q
this.pageSize = pageSize; 8{epy
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publicint getTotalCount(){ y[.0L!C {
return totalCount; q J@XVN4
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publicvoid setTotalCount(int totalCount){ hXmW,+1
if(totalCount > 0){ rnEWTk7&
this.totalCount = totalCount; :M'3U g$t
int count = totalCount / r}pYm'e
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pageSize; Q~ te`
if(totalCount % pageSize > 0) h8$lDFo
count++; \b{=&B[Q$'
indexes = newint[count]; Pdrz lu
for(int i = 0; i < count; i++){ \; $j
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indexes = pageSize * !!DHfAV]
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} =cX&H
}else{ oju4.1
this.totalCount = 0; P0 hC4Sxf
} GyRU/0'BME
} ZMy,<wk
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publicint[] getIndexes(){ ]* ':
return indexes; EX|Wd|aK
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publicvoid setIndexes(int[] indexes){ +p>tO\mo
this.indexes = indexes; $:{uF#
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publicint getStartIndex(){ -]A,SBs
return startIndex; GbBcC#0
} w)5eD+n\-
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publicvoid setStartIndex(int startIndex){ |r%6;8A]i
if(totalCount <= 0) 305()
this.startIndex = 0; jaFBz&P/#
elseif(startIndex >= totalCount) NcwZ_*sqj
this.startIndex = indexes W7_X=>l
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[indexes.length - 1]; A)/_:
elseif(startIndex < 0)
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this.startIndex = 0; B14z<x}Q
else{ PZ
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this.startIndex = indexes P!0uAkt9C
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[startIndex / pageSize]; 6zaO$
} ZdY:I;)s
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publicint getNextIndex(){ p*8=($j4
int nextIndex = getStartIndex() + ?2E@)7
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pageSize; d+\o>x|Y!Y
if(nextIndex >= totalCount) ApG_Gd.
return getStartIndex(); PI)lJ\
else q~T*R<S
return nextIndex; J
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} BwEO2a{
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publicint getPreviousIndex(){ Cevl#c5p>
int previousIndex = getStartIndex() - g-bHf]'
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pageSize; eYOwdTrq
if(previousIndex < 0) +j%!RS$ko
return0; +A>>Ak|s
else jL<:N
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return previousIndex; "fU=W|lY
} 4703\
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抽象业务类 |~Z.l
java代码: )CD4k:bm
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/** I~-W4{
* Created on 2005-7-12 x&@. [FJhO
*/ zgI!S6q
package com.javaeye.common.business; '-N `u$3Y
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import java.io.Serializable; 7;2j^qPr
import java.util.List; <v>^#/.0
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import org.hibernate.Criteria; mCb(B48]%X
import org.hibernate.HibernateException; ZUyG
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import org.hibernate.Session; V|13%aE_v
import org.hibernate.criterion.DetachedCriteria; iP]KV.e'/C
import org.hibernate.criterion.Projections; - 0R5g3^*/
import lA<n}N)j
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org.springframework.orm.hibernate3.HibernateCallback; P<ElH3J`
import %M]%[4eC
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org.springframework.orm.hibernate3.support.HibernateDaoS C&