Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ya]CxnKR3
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 be `\ O
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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 C?Dztkz
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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 VsOn j~@
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分页支持类: vMJv.O>HW
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java代码: p=6Q0r|'
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package com.javaeye.common.util; = >)S\Dfi
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import java.util.List; heiIb|z
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publicclass PaginationSupport { 5nIm7vlQm
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publicfinalstaticint PAGESIZE = 30; e!*d(lHKos
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privateint pageSize = PAGESIZE; }6}Gj8Nb
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privateList items; MWGW[V;
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privateint totalCount; ,qJ/Jt$A
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privateint[] indexes = newint[0]; {20^abUAS
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privateint startIndex = 0; hA6!F#1
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public PaginationSupport(List items, int XoM+"R"
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totalCount){ F*hOa|7/
setPageSize(PAGESIZE); O-6848iCX
setTotalCount(totalCount); k}y1IW+3
setItems(items); [*w^|b?
setStartIndex(0); V%?oI]"
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} zDY!0QZLF\
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public PaginationSupport(List items, int aS?A3h4WM_
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totalCount, int startIndex){ s"`uE$6N
setPageSize(PAGESIZE); :.6kXX'~
setTotalCount(totalCount); 'mj0+c$
setItems(items); "exph$
setStartIndex(startIndex); zh)qo
} &;5QB
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public PaginationSupport(List items, int }R*[7V9"
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totalCount, int pageSize, int startIndex){ r-'(_t~FT
setPageSize(pageSize); Iq.*2aff+
setTotalCount(totalCount); D1t@Y.vl
setItems(items); &!#,p{}ccU
setStartIndex(startIndex); roY oxF;\
} }|MGYS )
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publicList getItems(){ m&jh7)V
return items; Y~( #_K
} U'@eUY(Ov$
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publicvoid setItems(List items){ vK)^;T ;
this.items = items; DSad[>Uj],
} W4Nbl
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publicint getPageSize(){ #p}I 84Q
return pageSize; eAS~>|N#x
} x9R_KLN:;
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publicvoid setPageSize(int pageSize){ M~7 gUb|
this.pageSize = pageSize; #>C.61Fx
} SU9qF73Y
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publicint getTotalCount(){
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return totalCount; >t')ZSjRs
} :<f7;.
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publicvoid setTotalCount(int totalCount){ ST1PSuC~
if(totalCount > 0){ _x_om#~n
this.totalCount = totalCount; EaGh`*"w(7
int count = totalCount / szN`"Yi){
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pageSize; &S9Sl
if(totalCount % pageSize > 0) 9cud CF
count++; zz3Rld!b[
indexes = newint[count]; _3- nw
for(int i = 0; i < count; i++){ V6Ie\+@.\
indexes = pageSize * U`sybtuBP'
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} tK{2'e6x
}else{ Lw<?e;
this.totalCount = 0; w?]k$
} %4?
} `!Ei
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publicint[] getIndexes(){ JPW+(n|g
return indexes; 3\WLm4
} 0<75G6wd
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publicvoid setIndexes(int[] indexes){ P3C|DO4
this.indexes = indexes; Rf2$k/lZ
} V~M>K-AL
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publicint getStartIndex(){ gE'b.04Y9i
return startIndex; ;|&Ak_I2G
} YFgQ!\&59
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publicvoid setStartIndex(int startIndex){ R}7>*&S:
if(totalCount <= 0) 289teU
this.startIndex = 0; n.P$7%G`2
elseif(startIndex >= totalCount) {t`UV,
this.startIndex = indexes (cJb/|?3
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[indexes.length - 1]; MB;<F
elseif(startIndex < 0) m~ :W$x1+
this.startIndex = 0; 'eg?W_zu
else{ &g;4;)p*8
this.startIndex = indexes 7bOL ,S
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[startIndex / pageSize]; 9v&{;
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} 4L\bT;dQ|.
} $$`E@\5P
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publicint getNextIndex(){ 1V(tt{
int nextIndex = getStartIndex() + ;=.VKW%U
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pageSize; e#]=-^
if(nextIndex >= totalCount) ](c[D9I!8
return getStartIndex(); 3lYM(DT
else C*Avu
return nextIndex; ~jMdM~}
} qYZ\<h^
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publicint getPreviousIndex(){ Rr+Y::E
int previousIndex = getStartIndex() - KY$6=/?U_
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pageSize; >J>4g;Y
if(previousIndex < 0) wjYwQ= y5
return0; 6?OH"!b2-}
else H)aeSF5
return previousIndex; GPnd7}Tn
} HT7V} UiaO
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} xb$eFiQ
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抽象业务类 tkU"/$Vi\
java代码: QHnk@R!
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/** F3[3~r
* Created on 2005-7-12 -#T?C]}
*/ I;kKY
package com.javaeye.common.business; aR30wxW&)
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import java.io.Serializable; qYLOq`<f
import java.util.List; 44_7gOZ
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import org.hibernate.Criteria; 7KU/ 1l9$9
import org.hibernate.HibernateException; b489sa
import org.hibernate.Session; QZ(se
import org.hibernate.criterion.DetachedCriteria; (5S(CYls
import org.hibernate.criterion.Projections; p\5DW'
import O@St^o*A}
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org.springframework.orm.hibernate3.HibernateCallback; Mo`7YS-Y
import j2NnDz'
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org.springframework.orm.hibernate3.support.HibernateDaoS I8
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upport; 51 3{oM:
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import com.javaeye.common.util.PaginationSupport; +4U ?*:n
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public abstract class AbstractManager extends {X$8yy2zC5
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HibernateDaoSupport { Z"rrbN1
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privateboolean cacheQueries = false; |,rIB
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privateString queryCacheRegion; !l1UpJp
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publicvoid setCacheQueries(boolean Qm86!(eZ-
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cacheQueries){ {2?o:
this.cacheQueries = cacheQueries; qv|geBW
} 7N0V`&}T
.} <$2.
publicvoid setQueryCacheRegion(String J5PXmL
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queryCacheRegion){ NFpR jC?
this.queryCacheRegion = ~*R"WiDtI
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