Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 [XN={
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 i}(LqcYU
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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 M.JA.I@XC
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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 8u"U1
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分页支持类: {% 6}'
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java代码: s$IDLs,WM
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package com.javaeye.common.util; v<k?Vu
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import java.util.List; y-Fo=y
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publicclass PaginationSupport { -$\y_?}
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publicfinalstaticint PAGESIZE = 30; mb1FWy=3
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privateint pageSize = PAGESIZE; ]43/`FX
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privateList items; +8T?{K
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privateint totalCount; 1pVS&0W
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privateint[] indexes = newint[0]; *9
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privateint startIndex = 0; DmK57V4L^
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public PaginationSupport(List items, int ]dVGUG8
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totalCount){ ]U?^hZ_
setPageSize(PAGESIZE); cx,+k]9D
setTotalCount(totalCount); 39c2pV[
setItems(items); *YI98
setStartIndex(0); ?PLPf>e
} . P viA
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public PaginationSupport(List items, int oE@a'*.\
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totalCount, int startIndex){ 3qgS&js 7
setPageSize(PAGESIZE); ME$[=?7XX
setTotalCount(totalCount); Lpkyoh v
setItems(items); t
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setStartIndex(startIndex); wKh4|Ka
} N>uRf0E>
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public PaginationSupport(List items, int 2F;y;l%
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totalCount, int pageSize, int startIndex){ _>?\DgjH
setPageSize(pageSize); k:i4=5^*GX
setTotalCount(totalCount); z9f-.72"X
setItems(items); /A\8 mL8
setStartIndex(startIndex); (le9q5Qr.
} Bg=wKwc8
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publicList getItems(){ AD>e?u
return items; uo:J\ E
} qw301]y
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publicvoid setItems(List items){ !vi>U|rh
this.items = items; b1q"!+8y
} j8i[ONq^
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publicint getPageSize(){ te`$%NRl
return pageSize; AF{\6<m
} yZ7&b&2nLn
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publicvoid setPageSize(int pageSize){ zC:ASt
this.pageSize = pageSize; b)#hSjWO#
} OG~gFZr)6
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publicint getTotalCount(){ r+!YIk
return totalCount; \<h0Q,e
} -/B+T>[nTb
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publicvoid setTotalCount(int totalCount){ /V8#[9K
if(totalCount > 0){ &,vcJ{.
this.totalCount = totalCount; ,oe <
int count = totalCount / u]wZQl#-
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pageSize; nUr5Qn?
if(totalCount % pageSize > 0) 8$cLG*=h4
count++; CZe ]kXNv
indexes = newint[count]; )CYGQMK
for(int i = 0; i < count; i++){ w_c"@CjkE
indexes = pageSize * 'c&Ed
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} "9uKtQS0o
}else{ .<?GS{6
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this.totalCount = 0; yF:1( 4
} 8,Z_{R#|
} Tb}4wLu
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publicint[] getIndexes(){ OKZV{Gja
return indexes; PNhe
} GMx&y2. Z
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publicvoid setIndexes(int[] indexes){ `RT>}_j
this.indexes = indexes; fb7; |LF
} )* : gqN
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publicint getStartIndex(){ ]EbM9Fo-U
return startIndex; 7Die
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} eIF5ZPSZi
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publicvoid setStartIndex(int startIndex){ je-!4r,
if(totalCount <= 0) y1 DL,%j
this.startIndex = 0; tFn)aa~L
elseif(startIndex >= totalCount) + 480 l}
this.startIndex = indexes JG.y,<xW
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[indexes.length - 1]; P:S .~Jq
elseif(startIndex < 0) uc{Ihw
this.startIndex = 0; g/_5unI}u
else{ !TH)
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this.startIndex = indexes XW H5d-
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[startIndex / pageSize]; hag$GX'2k
} c]-<vkpV
} Gu,wF(x7A
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publicint getNextIndex(){ ,t744k')
int nextIndex = getStartIndex() + UgRiIQMq.
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pageSize; Es`Px_k
if(nextIndex >= totalCount) s)t@ol
return getStartIndex(); M?49TOQA
else (x|T+c"bAX
return nextIndex; octL"t8w
}
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publicint getPreviousIndex(){ ]cvwIc">
int previousIndex = getStartIndex() - 0auYG><=
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pageSize; Jr4Ky<G_i
if(previousIndex < 0) uZYF(Yu
return0; @bLy,Xr&
else B@))8.h]
return previousIndex; t+
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} I{&[[7H
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} v~C
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抽象业务类 7z,C}-q
java代码: y<3-?}.aZ
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/** RBd7YWo\|j
* Created on 2005-7-12
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package com.javaeye.common.business; v/plpNVp>
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import java.io.Serializable; UDFDJm$
import java.util.List; MchA{p&Ol
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import org.hibernate.Criteria; /}Axf"OE
import org.hibernate.HibernateException; 2[yd> (`
import org.hibernate.Session; Y|qTyE%
import org.hibernate.criterion.DetachedCriteria; {S\{Ii6
import org.hibernate.criterion.Projections; ?z+eWL
import {YC@T(
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org.springframework.orm.hibernate3.HibernateCallback; H8jpxzXv
import 1GRCV8"Z^
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org.springframework.orm.hibernate3.support.HibernateDaoS J)>c9w
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upport; q
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import com.javaeye.common.util.PaginationSupport; v1JzP#
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public abstract class AbstractManager extends djZqc5t
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HibernateDaoSupport { ^76]0`gS
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privateboolean cacheQueries = false; ="H%6S4'
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privateString queryCacheRegion; 6MW{,N
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publicvoid setCacheQueries(boolean 3?yg\
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cacheQueries){ i]4I [!
this.cacheQueries = cacheQueries; D_7,m%Z:
} T-L||yE,h
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publicvoid setQueryCacheRegion(String u=s p`%?
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queryCacheRegion){ Fm 2AEs\
this.queryCacheRegion = +sA2WK]
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queryCacheRegion; BO&bmfp7,
} 3hH<T.@)
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publicvoid save(finalObject entity){ #!#
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getHibernateTemplate().save(entity); gf@:R'$:+
} B9 uoVcW
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publicvoid persist(finalObject entity){ {P./==^0
getHibernateTemplate().save(entity); I236RIq
}
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publicvoid update(finalObject entity){ ?l )[7LR4
getHibernateTemplate().update(entity); Avc%2+
} T^KKy0ZGM
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publicvoid delete(finalObject entity){ O/Crd/
getHibernateTemplate().delete(entity); t:Q*gWRh
} Lq^)R
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publicObject load(finalClass entity, f}e`XA?
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finalSerializable id){ <'*LRd$1
return getHibernateTemplate().load Sm|6 %3
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(entity, id); 9A=,E&
} 4HlQ&2O%#
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publicObject get(finalClass entity, (A#^l=su
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finalSerializable id){ eauF~md,
return getHibernateTemplate().get Q
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(entity, id); Yq
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} %u'ukcL7
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publicList findAll(finalClass entity){ ?tbrbkx
return getHibernateTemplate().find("from wHy!CP%
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" + entity.getName()); HZge!Yp<
} }}~ |!8
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publicList findByNamedQuery(finalString :o3N;*o>)0
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namedQuery){ L,!?Nt\
return getHibernateTemplate GTd,n=
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().findByNamedQuery(namedQuery); V,njO{Q
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publicList findByNamedQuery(finalString query, z}
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finalObject parameter){ ?@86P|19
return getHibernateTemplate ;Y, y 4{H3
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().findByNamedQuery(query, parameter); e^voW"?%
} <5051UEu
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publicList findByNamedQuery(finalString query, <P_-s*b
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finalObject[] parameters){ |6-nbj
return getHibernateTemplate 2>%=U~5
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().findByNamedQuery(query, parameters); <hyKu
} /{I$ #:M
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publicList find(finalString query){ Bzf^ivT3L
return getHibernateTemplate().find >(<f 0
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(query); H5|;{q:j
} Pm7}"D'/
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publicList find(finalString query, finalObject PJ#,2=n~
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parameter){ e0 ecD3
return getHibernateTemplate().find 5 qA'
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(query, parameter); At;LO9T3z
} h?U
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public PaginationSupport findPageByCriteria P%n>Tg80M
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(final DetachedCriteria detachedCriteria){ SpBy3wd
return findPageByCriteria UEL_uij
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); KI.hy2?e
} vY3h3o
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public PaginationSupport findPageByCriteria [-w%/D%@
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(final DetachedCriteria detachedCriteria, finalint .xkM.g4{~
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startIndex){ c71y'hnT
return findPageByCriteria !4!~Lk=
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(detachedCriteria, PaginationSupport.PAGESIZE, Id9TG/H7
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startIndex); L~3Pm%{@A
} |.dRily+
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public PaginationSupport findPageByCriteria ['D]>Ot68
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(final DetachedCriteria detachedCriteria, finalint i6Gu@( 8Q
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pageSize, >\8+:oS^
finalint startIndex){ 0g;|y4SN=
return(PaginationSupport) Z_NCD`i;
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getHibernateTemplate().execute(new HibernateCallback(){ *
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publicObject doInHibernate ar,7S&s