Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 WJ
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 }F^c*xt[
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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 1W;+hXx
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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 ptUnV3h
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分页支持类: (}}BZS&.
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java代码: 0C3CqGP
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package com.javaeye.common.util; 8pPAEf
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import java.util.List; 1z*] MYU
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publicclass PaginationSupport { n|{x\@VeF
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publicfinalstaticint PAGESIZE = 30; {-H6Z#b[
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privateint pageSize = PAGESIZE; uGgR@+7?Z
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privateList items; y_\vXY'
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privateint totalCount; xpUaFb
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privateint[] indexes = newint[0]; $T~|@XH
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privateint startIndex = 0; \9<aCJxN
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public PaginationSupport(List items, int hCc I
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totalCount){ {cC9
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setPageSize(PAGESIZE); ]"aC
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setTotalCount(totalCount); .}2^YOmd
setItems(items); Xv6z>z.
setStartIndex(0); CShVJ:u+K\
} `[7&tOvSk
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public PaginationSupport(List items, int !PJ;d)\T
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totalCount, int startIndex){ n
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setPageSize(PAGESIZE); F<
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setTotalCount(totalCount); ^[lg1uMW
setItems(items); [sbC6(z
setStartIndex(startIndex); if
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} ,??xW{*|
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public PaginationSupport(List items, int >\[sNCkf
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totalCount, int pageSize, int startIndex){ @C7#xGD
setPageSize(pageSize); -Z)$].~|t
setTotalCount(totalCount); 1KAA(W;nq
setItems(items); \snbU'lfP
setStartIndex(startIndex); 5fSDdaO
} 3Ud&B
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publicList getItems(){ |l`X]dsfQ
return items; XLI'f$w&
} }mk9-7
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publicvoid setItems(List items){ ~`u?|+*BO
this.items = items; u7<B*d:
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publicint getPageSize(){ m>jX4D7KZ
return pageSize; }Sqey:9jH
} ?9
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publicvoid setPageSize(int pageSize){ (+q?xwl!N
this.pageSize = pageSize; z@{|Y;s
} LPvyfD;Zy
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publicint getTotalCount(){ Lb{~a_c
return totalCount; 9v_gR52vh
} J<V}g v
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publicvoid setTotalCount(int totalCount){ Wi'BX#xCB
if(totalCount > 0){ VsNqYFHes&
this.totalCount = totalCount; WB"$NYB
int count = totalCount / g*AnrQ}P
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pageSize; Hvnak{5
if(totalCount % pageSize > 0) tt6ElP|D
count++; \Llrs-0 M
indexes = newint[count]; oy;N3
for(int i = 0; i < count; i++){ XCDHd
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indexes = pageSize * H7H'0C
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} ~2S`y=*:
}else{ I,l%6oPa
this.totalCount = 0; A!ba_14
} ?k<wI)JR
} = K"F!}
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publicint[] getIndexes(){ 4&R\6!*s
return indexes; 1x V~EX
} 49@
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publicvoid setIndexes(int[] indexes){ KQNSYI7a
this.indexes = indexes; +wY3E*hU
} n,9 *!1y
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publicint getStartIndex(){ GLv}|>W
return startIndex; MVe5j+8
} uY5f mM9
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publicvoid setStartIndex(int startIndex){ a`~$6
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if(totalCount <= 0) st:[|`
this.startIndex = 0; @ J!)o d
elseif(startIndex >= totalCount) H*A)U'`
this.startIndex = indexes 7: J6 F
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[indexes.length - 1]; %_@8f|# ,M
elseif(startIndex < 0) nR!qolh
this.startIndex = 0; U:J~Oy_Z
else{ b!PN6<SI
this.startIndex = indexes VS%8f.7ep
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[startIndex / pageSize]; 3 ^{U:"N0
} $_S^Aw?
} w44{~[0d4
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publicint getNextIndex(){ oHxaa>C>
int nextIndex = getStartIndex() + t1n'Ecm(
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pageSize; *xkbKkm
if(nextIndex >= totalCount) v )%EG
return getStartIndex(); =uKK{\+|Y
else j8hb
return nextIndex; XFG]%y=/6
} S]K^wj[
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publicint getPreviousIndex(){ Kcsje_I-M
int previousIndex = getStartIndex() - Mff_j0D
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pageSize; wZE[we^Q"
if(previousIndex < 0) zc*qmb
return0; /U N%P2>^1
else K)_0ej~C
return previousIndex; ~Xh(JK]
} yE{l
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} j<8_SD =,
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抽象业务类 cK@O)Ko}
java代码: unSF;S<
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/** dQ/Xs.8
* Created on 2005-7-12 ZH0 ~:
*/ 0}Kl47}aD
package com.javaeye.common.business; e7]IEBbX2O
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import java.io.Serializable; M}(4>W
import java.util.List; azj<aaH
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import org.hibernate.Criteria; 14s+&
import org.hibernate.HibernateException; &XrF#s
import org.hibernate.Session; g RSM~<
import org.hibernate.criterion.DetachedCriteria; #)my)}o\p
import org.hibernate.criterion.Projections; }..}]J;To
import r>$jMo.S"
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org.springframework.orm.hibernate3.HibernateCallback; r}"Ty
import 6CY_8/:zL
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