Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 wq!9wk9
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 MU2kA&LH
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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 0dS (g&ZR
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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 2G!z/OAj
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分页支持类: P2iuB|B@
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java代码: 9 BU#THDm
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package com.javaeye.common.util; >SziRm>Y7
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import java.util.List; <RbfW'<G
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publicclass PaginationSupport { u2$.EM/iae
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publicfinalstaticint PAGESIZE = 30; .3n\~Sn
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privateint pageSize = PAGESIZE; $UK m[:7
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privateList items; `'EG7
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privateint totalCount; 3XQe? 2:<
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privateint[] indexes = newint[0]; "AKr;|m
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privateint startIndex = 0; I*(kv7(c0
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public PaginationSupport(List items, int >hq{:m
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totalCount){ q
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setPageSize(PAGESIZE); h"Wpb}FT
setTotalCount(totalCount); $F X$nY
setItems(items); gGBRfq>
setStartIndex(0); aK|
} 5!$sQ@#}D
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public PaginationSupport(List items, int hJSWh5]
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totalCount, int startIndex){ VYh/URU>
setPageSize(PAGESIZE); $3&XM
setTotalCount(totalCount); d7QUg6=
setItems(items); @(E6P;+{
setStartIndex(startIndex); F`(;@LO
} AW|SD
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public PaginationSupport(List items, int n
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totalCount, int pageSize, int startIndex){ a j
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setPageSize(pageSize); )1@%!fr
setTotalCount(totalCount); /uDcJ1u66
setItems(items); gM]E8%;{
setStartIndex(startIndex);
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} WS.g`%
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publicList getItems(){ N=T}
return items; )8}k.t>'s
} WJa7
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publicvoid setItems(List items){ wTZ(vX*mK
this.items = items; -wl&~}%M
} j;D$qd'J
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publicint getPageSize(){ Ars*H,9>e
return pageSize; ?2,D-3 {
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publicvoid setPageSize(int pageSize){ P0hr=/h4
this.pageSize = pageSize; O<,\tZ'N
} @]2aPs} }6
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publicint getTotalCount(){ yIngenr$
return totalCount; xSlgq|8
} 2|B@s3a
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publicvoid setTotalCount(int totalCount){ $9X?LGUz
if(totalCount > 0){ vJVh%l+
this.totalCount = totalCount; $XMpC{
int count = totalCount / 3K/tB1
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pageSize; d=uGB"
if(totalCount % pageSize > 0) Fi;OZ>;a
count++; ru`U/6n
indexes = newint[count]; 3#]II j`\
for(int i = 0; i < count; i++){ >m<T+{`
indexes = pageSize * E?KPez
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} ]$^HGmP
}else{ ME]89 T&
this.totalCount = 0; mQ`2c:Rn&7
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} 8+".r2*_iO
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publicint[] getIndexes(){ '!?t+L%gO
return indexes; ,2 W=/,5A
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publicvoid setIndexes(int[] indexes){ Eaxsg
this.indexes = indexes; jAy2C&aP
} AcXVfk z
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publicint getStartIndex(){ kZrc^
return startIndex; } snS~kx
} Ij =NcP
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publicvoid setStartIndex(int startIndex){ wqV"fZA\]
if(totalCount <= 0) (3!6nQj-t
this.startIndex = 0; :&:P4Y1
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elseif(startIndex >= totalCount) 'wMvO{}$
this.startIndex = indexes O`GF|
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[indexes.length - 1]; B)L0hi
elseif(startIndex < 0) 'r\RN\PT
this.startIndex = 0; I^u~r.
else{ -Eq[J k
this.startIndex = indexes `#8k Jt
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[startIndex / pageSize]; =&9c5"V&
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} <%m1+%mA.
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publicint getNextIndex(){ R4JfH
int nextIndex = getStartIndex() + ElDeXLr'
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pageSize; >G%oWRk
if(nextIndex >= totalCount) $0un`&W
return getStartIndex(); $@]
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else FPF$~ sX
return nextIndex; -OU{99$aS
} o,c}L9nvt
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publicint getPreviousIndex(){ 'kY/=*=Q
int previousIndex = getStartIndex() - /
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pageSize; *l"CIG'
if(previousIndex < 0) zn&ZXFgN
return0; ePJ_O~c
else GbZ~eI`,2
return previousIndex; WcY_w`*L
} 42 lw>gzr!
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} ISK 8t
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抽象业务类 >1Hv c7DP
java代码: }79jyS-e
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/** D|m3.si
* Created on 2005-7-12 /VufL+q1
*/ }+pwSjsno
package com.javaeye.common.business; D&o\q68W
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import java.io.Serializable; +L.D3
import java.util.List; K?!W9lUq
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import org.hibernate.Criteria; 8IxIW0
import org.hibernate.HibernateException; 6jgP/~hP>N
import org.hibernate.Session; c^pQitPv
import org.hibernate.criterion.DetachedCriteria; qGMU>J.;c
import org.hibernate.criterion.Projections; Xa#.GrH6
import AH/o-$C&
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org.springframework.orm.hibernate3.HibernateCallback; Ay 4P_>^
import kp<Au)u
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org.springframework.orm.hibernate3.support.HibernateDaoS aQ\SV0PI
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upport; )AR-b8..o
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import com.javaeye.common.util.PaginationSupport; S (xs;tZ
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public abstract class AbstractManager extends ,VEE<*'X
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HibernateDaoSupport { n w`rH*
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privateboolean cacheQueries = false; 6Y,&