Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 {)r[?%FMgV
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 hOLlZP+
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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 L!33`xef'
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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 4jZt0
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分页支持类: ;MYK TE>m
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java代码: ?cz7s28a
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package com.javaeye.common.util; X%*BiI
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import java.util.List; ]OKKR/:
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publicclass PaginationSupport { )06. dZq\
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publicfinalstaticint PAGESIZE = 30; O>rz+8 T
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privateint pageSize = PAGESIZE; NODE`VFu
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privateList items; U.^%7.
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privateint totalCount; -y&>&D
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privateint[] indexes = newint[0]; 0\ j)!b
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privateint startIndex = 0; GF<SQHL,
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public PaginationSupport(List items, int z9AX8k(B6
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totalCount){ S,+|A)\#
setPageSize(PAGESIZE); * e,8o2C$
setTotalCount(totalCount); 9J49s1
setItems(items); y>UQm|o<W
setStartIndex(0); /WAOpf5
} W-RshZ\
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public PaginationSupport(List items, int O'~^wu.
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totalCount, int startIndex){ 2rP!]
setPageSize(PAGESIZE); zBrqh9%8e
setTotalCount(totalCount); r)qow.+&
setItems(items); $I4JKh
setStartIndex(startIndex); g fv?#mp
} }`$({\^w
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public PaginationSupport(List items, int .0y .0=l
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totalCount, int pageSize, int startIndex){ 1G, '
setPageSize(pageSize); A sf]sU..
setTotalCount(totalCount); N':d
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setItems(items); c&L|e$C]
setStartIndex(startIndex); G"<} s
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} ~|wh/]{b9
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publicList getItems(){ %8%0l*n'
return items; _32 o7}!x
} !|
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publicvoid setItems(List items){ #)%dG3)e
this.items = items;
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} y7 W7270)
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publicint getPageSize(){ 3 _DJ
return pageSize; y=y#*yn &
} kvt"7;(
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publicvoid setPageSize(int pageSize){ cC`PmDGq
this.pageSize = pageSize; nfr..4,:
} R?,XSJ
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publicint getTotalCount(){ /(ArA=#
return totalCount; _H2%6t/V
} 9[\$\l
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publicvoid setTotalCount(int totalCount){ .TRp74
if(totalCount > 0){ \G]vTK3
this.totalCount = totalCount; qZ+^ND(I
int count = totalCount / W(*?rA- PP
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pageSize; z6Yx
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if(totalCount % pageSize > 0) ];}7
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count++; #J
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indexes = newint[count]; pB]+c%\
for(int i = 0; i < count; i++){ Je~Ybh
indexes = pageSize * ]M9r<x*
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} |f&=9%
}else{ &uTK@ G+
this.totalCount = 0; 7;:Uv=
} o>4GtvA*
} Q(YQ$i"S
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publicint[] getIndexes(){ {{4Sgb
return indexes; {W# VUB
} #]o#~:S=
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publicvoid setIndexes(int[] indexes){ -u'BK@;
this.indexes = indexes; V IU4QEW`x
} )eSD5hOI)
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publicint getStartIndex(){ tJY3k$YX
return startIndex; lMBXD?,,J
} _NJq%-,'
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publicvoid setStartIndex(int startIndex){ !"x&tF
if(totalCount <= 0) 7j L.\O
this.startIndex = 0; IOOAaa @(
elseif(startIndex >= totalCount) A 4|a{\|$
this.startIndex = indexes HOAgRhzE
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[indexes.length - 1]; .EoLJHL
}
elseif(startIndex < 0) 8klu*
this.startIndex = 0; )y}W=Q>T
else{ 4~/3MG
this.startIndex = indexes T]Eg9Y:+v
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[startIndex / pageSize]; onAC;<w
} Vnq&lz%QqC
} 8L*P!j9`EY
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publicint getNextIndex(){ +gOv5Eno-
int nextIndex = getStartIndex() + :CAbGs:56
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pageSize; aC2\C=ru_
if(nextIndex >= totalCount) N-Nq*
return getStartIndex(); VZArdXTP
else f'<MDLl
return nextIndex; VBK9te,A
} xT$9M"
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publicint getPreviousIndex(){ 9Iod[ x
int previousIndex = getStartIndex() - ]1
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pageSize; XZFM|=%X
if(previousIndex < 0) _7"G&nZ0
return0; Pb^Mc <j
else ("L&iu\`@
return previousIndex; Bzw!,(u/
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} 4U;6 2 jq
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} ^B|Q&1
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抽象业务类 le-Q&*
java代码: 24
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/** _# /zH~V%
* Created on 2005-7-12 2Y@:Vgg
*/ gOA
package com.javaeye.common.business; RMx$]wn_
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import java.io.Serializable; ~)JNevLZ
import java.util.List; M6P`~emX2
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import org.hibernate.Criteria; ?x(]U+
import org.hibernate.HibernateException; F#w=z/
import org.hibernate.Session; &O5W
import org.hibernate.criterion.DetachedCriteria; @sAT#[j
import org.hibernate.criterion.Projections; E$'Zd,|f=
import Sb&[V>!2^
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org.springframework.orm.hibernate3.HibernateCallback; o7*z@R"
import ]HK|xO(
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org.springframework.orm.hibernate3.support.HibernateDaoS l25E!E-'b
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upport; n%>c4*t
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import com.javaeye.common.util.PaginationSupport; A@X&dy
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public abstract class AbstractManager extends E K)7g~
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HibernateDaoSupport { m\88Etl@
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privateboolean cacheQueries = false; /^kZ}}9baU
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privateString queryCacheRegion; `H5n_km
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publicvoid setCacheQueries(boolean >+w(%;i;
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cacheQueries){ $vC!Us{z
this.cacheQueries = cacheQueries; "?Eh_Dw
} s\6kXR
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publicvoid setQueryCacheRegion(String w~eF0{h
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queryCacheRegion){ ?X1vU0c
this.queryCacheRegion = 3JiJ,<,7
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queryCacheRegion; <(YmkOS+
} xbFoXYqgP
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publicvoid save(finalObject entity){ )2|'`
getHibernateTemplate().save(entity); Ub%al
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} o!`.LL%
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publicvoid persist(finalObject entity){ +)#d+@-
getHibernateTemplate().save(entity); P~V0<$C
} MOuI;EF
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publicvoid update(finalObject entity){ aN7VGc
getHibernateTemplate().update(entity); /hPgOaB
} V=pg9KR!T
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publicvoid delete(finalObject entity){ -vcHSwGb
getHibernateTemplate().delete(entity); (%huWW
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} VuDSjh
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publicObject load(finalClass entity, X&1R6O
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finalSerializable id){ .u3!%{/v(c
return getHibernateTemplate().load wz-9+VN6
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(entity, id); $= '_$wG
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} KJ]:0'T
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publicObject get(finalClass entity, N@$g"w
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finalSerializable id){ sjpcz4|K
return getHibernateTemplate().get bE-{
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