Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 LuVj9+1 S
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 y-U(`{[nM
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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 DCm;dh
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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 ~gf$ L9
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分页支持类: @l8?\^N
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java代码: UpITx]y?"m
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package com.javaeye.common.util; B@4#y9`5
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import java.util.List; "~ /3
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publicclass PaginationSupport { ;Cwn1N9S
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publicfinalstaticint PAGESIZE = 30; 1;h>^NOq
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privateint pageSize = PAGESIZE; P+/L,u
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privateList items; P/_XDP./U
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privateint totalCount; xqr`T0!&
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privateint[] indexes = newint[0]; 9T]]T Ev4
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privateint startIndex = 0; {`'b+0[;@
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public PaginationSupport(List items, int rk~/^(!
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totalCount){ }XUHP%
setPageSize(PAGESIZE); ?:ZH%R_`a
setTotalCount(totalCount); ;(sb^O
setItems(items); zb<+x(0y"
setStartIndex(0); &$=F$
} kK(633s
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public PaginationSupport(List items, int @.0,ka,X
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totalCount, int startIndex){ S$#Awen"@
setPageSize(PAGESIZE); myo/}58Nv
setTotalCount(totalCount); )-9/5Z0v
setItems(items); [kXe)dMX8
setStartIndex(startIndex); = FE,G*
} ]Cj&C/(
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public PaginationSupport(List items, int gp}S 1
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totalCount, int pageSize, int startIndex){ (X8N?tJ
setPageSize(pageSize); H0Tt(:.&
setTotalCount(totalCount); T&c[m!}X|t
setItems(items); lyV]-w
setStartIndex(startIndex); dug RO[
} T|m+ULp~
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publicList getItems(){ #: F)A_Y
return items; 3lJK[V{'#'
} aV ^2
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publicvoid setItems(List items){ "[%NXan
this.items = items; j}|6k6t
} <D=%55
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publicint getPageSize(){ <I>q1m?KN
return pageSize; e0qa~5
} :sn}D~
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publicvoid setPageSize(int pageSize){ D&'".N,}
this.pageSize = pageSize; [:o#d`^
} 5!Guf?i
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publicint getTotalCount(){ =m40{
return totalCount; qj|GAGrQ2
} q\~7z1
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publicvoid setTotalCount(int totalCount){ 9=/8d`r
if(totalCount > 0){ B!<I[fvK
this.totalCount = totalCount; >8,BC
int count = totalCount / f="}.
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pageSize; !b7H
if(totalCount % pageSize > 0) f ZISwr
count++; |9g*rO
indexes = newint[count]; ]/a?:24 [
for(int i = 0; i < count; i++){ ^cY5!W.q8
indexes = pageSize * DJ\lvT#j
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} :\>UZ9h #
}else{ 5p~Z-kU&
this.totalCount = 0; B<oi,S
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} ]6nF>C-C
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publicint[] getIndexes(){ )j$Bo{
return indexes; _WkK%RYV
} ^yX
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publicvoid setIndexes(int[] indexes){ |k^X!C 0
this.indexes = indexes; 3B_S>0H"$
} Ug9o/I@}C
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publicint getStartIndex(){ Lt*H|9
return startIndex; Ah"RxA
} !ine|NM
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publicvoid setStartIndex(int startIndex){ ~E)I+$,
if(totalCount <= 0) Mn=_lhWK
this.startIndex = 0; JRG7<s$
elseif(startIndex >= totalCount) _[<I&^%
this.startIndex = indexes /qz(ra
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[indexes.length - 1]; )~Q$ tM`
elseif(startIndex < 0) s^AYPmR6
this.startIndex = 0; ,7'l$-r l
else{ w0.#/6
this.startIndex = indexes 0D\FFfs
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[startIndex / pageSize]; m{1By/U
} ~"LOw_BRh
} dx~F [
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publicint getNextIndex(){ |GMK@Q'0:
int nextIndex = getStartIndex() + l@^RbF['
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if(nextIndex >= totalCount) VA]%i P,O-
return getStartIndex(); xX&*&RPZ
else ch-GmAj
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return nextIndex; Q8P;AN_JS
} !|}>Y
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publicint getPreviousIndex(){ f>RPh bq|
int previousIndex = getStartIndex() - |~>8]3. Y
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pageSize; `T mIrc
if(previousIndex < 0) wp@c;gK7
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else ^x4gUT-Wy
return previousIndex; %7{6>6%
} L5>>gG,
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} F<I-^BY)
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抽象业务类 [H"Ods~_`
java代码: q k !Q2W
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/** ^+}<Q#y-
* Created on 2005-7-12 wi&m(f(~
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package com.javaeye.common.business; f'}23\>
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import java.io.Serializable; ~#gVs*K
import java.util.List; r<"1$K~Ka
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import org.hibernate.Criteria; $H5Xa[
import org.hibernate.HibernateException; /at#[Pw~01
import org.hibernate.Session; }U8H4B~UtY
import org.hibernate.criterion.DetachedCriteria; j|
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import org.hibernate.criterion.Projections; {6~W2zX&
import DTJ~.
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org.springframework.orm.hibernate3.HibernateCallback; aE:fMDS|x
import &gq\e^0CRZ
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org.springframework.orm.hibernate3.support.HibernateDaoS ~
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upport; e#08,wgW
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import com.javaeye.common.util.PaginationSupport; s'i1!GNF
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public abstract class AbstractManager extends 0C0iAp
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HibernateDaoSupport { $o-s?";
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privateboolean cacheQueries = false; ]0\8g=KK
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privateString queryCacheRegion; ]2v31'
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publicvoid setCacheQueries(boolean
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cacheQueries){ ^gNAGQYA
this.cacheQueries = cacheQueries; |JrG?:n
} Z>o20uA
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publicvoid setQueryCacheRegion(String WM9QC59
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queryCacheRegion){ _sw,Y!x%dF
this.queryCacheRegion = \<V{6#Q=
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queryCacheRegion; .\i9}ye
} .vwOp*3\
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publicvoid save(finalObject entity){ U+nwLxe'
getHibernateTemplate().save(entity); .(3B}}gB>
} W4T>@b.
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publicvoid persist(finalObject entity){ '|Cs!Zl
getHibernateTemplate().save(entity); 0gxbo
} tTC[^Dji
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publicvoid update(finalObject entity){ 8r+R~{
getHibernateTemplate().update(entity); , Lhgv1
} Rh,*tS
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publicvoid delete(finalObject entity){ :fo%)_Jc!
getHibernateTemplate().delete(entity); +xB!T1pD
} 3_ObCsJ#,
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publicObject load(finalClass entity, t[7YMk
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finalSerializable id){ k4s >sd3 5
return getHibernateTemplate().load NaLec|6<t
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(entity, id); F@&q4whaVD
} OyFBM>6gh
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publicObject get(finalClass entity, =|=9\3po
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finalSerializable id){ `[7&tOvSk
return getHibernateTemplate().get X,^J3Ek>O
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(entity, id); qH$G_R#)8B
} fq_ 6xs
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publicList findAll(finalClass entity){ )k=8.j4
return getHibernateTemplate().find("from [\eUCt F
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" + entity.getName()); miEfxim
} =]&R6P>
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publicList findByNamedQuery(finalString 3,W2CN}
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namedQuery){ $0NWX
return getHibernateTemplate Pa%XLn'5
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().findByNamedQuery(namedQuery); ^o65sM
} wE;??'O'l
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publicList findByNamedQuery(finalString query, kR9G;IZ8s
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finalObject parameter){ 3]M
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return getHibernateTemplate SO3WOR`3
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().findByNamedQuery(query, parameter); *ofK|r
} qqLmjDv
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publicList findByNamedQuery(finalString query, 'R99kL/.N
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finalObject[] parameters){ G{$9e}#
return getHibernateTemplate wlmi&kq
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().findByNamedQuery(query, parameters); :/K 'P`JaL
} Ds$FO}KD{
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publicList find(finalString query){ 78Nli/U
return getHibernateTemplate().find VNx}ADXu ]
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(query); E&jngxlN
} C<eeAWP3v
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publicList find(finalString query, finalObject coiTVDwA
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parameter){ v5RS <?o
return getHibernateTemplate().find _LxV)
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(query, parameter); -|:7<$2#I
} <~<I K=n
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public PaginationSupport findPageByCriteria ;xXHSxa:=W
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(final DetachedCriteria detachedCriteria){ 2p8JqZMQb
return findPageByCriteria G]=U=9ZI
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); rKP"|+^
} 2P"@=bYT "
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public PaginationSupport findPageByCriteria 0[x?Q[~S_0
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(final DetachedCriteria detachedCriteria, finalint #<MLW4P
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startIndex){ gjk=`lU
return findPageByCriteria rbqH9 S
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(detachedCriteria, PaginationSupport.PAGESIZE, ig7)VKr
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startIndex); *B#<5<T
} ,iB)8Km@U
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public PaginationSupport findPageByCriteria )U`H7\*)
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(final DetachedCriteria detachedCriteria, finalint ^-f5;B`\i
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pageSize, |Gzd|$%Oq
finalint startIndex){ _|g(BK2}
return(PaginationSupport) Xa Yx avq
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getHibernateTemplate().execute(new HibernateCallback(){ Gg{@]9
publicObject doInHibernate p}}}~ lC/
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(Session session)throws HibernateException { t9zPJQlT}
Criteria criteria = \# lh b
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detachedCriteria.getExecutableCriteria(session); @$F(({?
int totalCount = acRPKTs
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