Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 D9hV`fA
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 mNc?`G_R
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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 !+<OED=qe
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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 ]RBT9@-:U
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分页支持类: v--Qbu
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java代码: 2rzOh},RS
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package com.javaeye.common.util; !Dc|g~km\
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import java.util.List; rAv)k&l
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publicclass PaginationSupport { FV 0x/)<z
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publicfinalstaticint PAGESIZE = 30; Qru
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privateint pageSize = PAGESIZE; GBh$nVn$
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privateList items; -za+Wa`vH
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privateint totalCount; ryC7O'j_P
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privateint[] indexes = newint[0]; :kQ%Mj>
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privateint startIndex = 0; uG\ @e'pr
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public PaginationSupport(List items, int 006qj.
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totalCount){ x>ZnQ6x~m]
setPageSize(PAGESIZE); 0=:]tSD\F
setTotalCount(totalCount); c[E"
setItems(items); 6_&uYA<8pE
setStartIndex(0); VB}4#-dG?
} t7P[^f15[
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public PaginationSupport(List items, int 1M={8}3
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totalCount, int startIndex){ yPn!1=-(
setPageSize(PAGESIZE); B$\,l.hE
setTotalCount(totalCount); ;Xr|['\'
setItems(items); u&E$(
setStartIndex(startIndex); :j<ij]rsI
} T4c]VWtD
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public PaginationSupport(List items, int u/ Gk>F
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totalCount, int pageSize, int startIndex){ 0#/N ZO
setPageSize(pageSize); U!TSAg21P
setTotalCount(totalCount); E! s?amM4
setItems(items); R(1N]>
setStartIndex(startIndex); qr<+@Q
} ~43T$^<w;
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publicList getItems(){ :TZ</3Sw
return items; dlf nhf
} 17C"@1n-
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publicvoid setItems(List items){ iVUkM3
this.items = items; &{R]v/{p]
} SK]"JSY`
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publicint getPageSize(){ W3gBLotdg
return pageSize; Vlf =gP
} s?9$o
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publicvoid setPageSize(int pageSize){ g'pB<?'E'
this.pageSize = pageSize; S 9;:)
} 9 aacW
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publicint getTotalCount(){ d1{%z\u
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return totalCount; !A|ayYBb\
} -*nd5(lY&
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publicvoid setTotalCount(int totalCount){ `,7;2ZG~O
if(totalCount > 0){ vNn$dc
this.totalCount = totalCount; dBeZx1Dy
int count = totalCount / aGx[?}=
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pageSize; .B? J@,
if(totalCount % pageSize > 0) ~USU\dni
count++; 9^zA(
indexes = newint[count]; O={
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for(int i = 0; i < count; i++){ ,UA-Pq3}
indexes = pageSize * @&F\ M}
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} |9;MP&68
}else{ Y2oN.{IH
this.totalCount = 0; LvcGh
} Mv 1V
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} ln*_mM/Q%
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publicint[] getIndexes(){ LEgx"H=c
return indexes; *B0
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publicvoid setIndexes(int[] indexes){ k0>]7t$L
this.indexes = indexes; 8)m
} wF.S ,|
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publicint getStartIndex(){ _c@k>"_{S
return startIndex; |Ev VS
} Eq82?+9
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publicvoid setStartIndex(int startIndex){ Y5XhV;16
if(totalCount <= 0) n u!tk$Q
this.startIndex = 0; ^1jZwP;5eW
elseif(startIndex >= totalCount) [+_0y[~,tB
this.startIndex = indexes 8EC$p} S
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[indexes.length - 1]; &"/IV$H
elseif(startIndex < 0) f{j.jfl\x
this.startIndex = 0; c%O8h
else{ .G/2CVMj
this.startIndex = indexes T!3_Q/~^r
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[startIndex / pageSize]; ;z3w#fNMv
} tEC`->|
} Xt%>XP
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publicint getNextIndex(){ 3w!,@=.q
int nextIndex = getStartIndex() + >ZjGs8&
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pageSize; =zXA0%
if(nextIndex >= totalCount) TD"w@jBA
return getStartIndex(); "i1r9TLc
else NkYU3[m$v
return nextIndex; )m4O7'2G
} o?]g
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publicint getPreviousIndex(){ W4V
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int previousIndex = getStartIndex() - Tu9[byfrI
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pageSize; ]$xN`O4W{
if(previousIndex < 0) uNS ]n}
return0; $9In\x
else cpe/GvD5]
return previousIndex; %$3)xtS6
} `GQ'yv
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抽象业务类 ye^l~
java代码: <RPy
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/** #fTPo:*t
* Created on 2005-7-12 +i1\],7
*/ _=d
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package com.javaeye.common.business; 0s+pcqOd^
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import java.io.Serializable; I6B4S"Q5<
import java.util.List; Rb=8(#
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import org.hibernate.Criteria; >~)IsQ*%
import org.hibernate.HibernateException; \8HLQly|@
import org.hibernate.Session; U%)m
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import org.hibernate.criterion.DetachedCriteria; *
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import org.hibernate.criterion.Projections; >Vl8ZQ8
import {%cm;o[7o
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org.springframework.orm.hibernate3.HibernateCallback; *M^t@ h l
import {24Y1ohK
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org.springframework.orm.hibernate3.support.HibernateDaoS di,?`
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upport; o7B }~;L
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import com.javaeye.common.util.PaginationSupport; ]%8f-_fSy
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public abstract class AbstractManager extends Y#[>j4<T
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HibernateDaoSupport { Bx&F* a;5
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privateboolean cacheQueries = false; ^,;AM(E
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privateString queryCacheRegion; ZZJXd+Q}
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publicvoid setCacheQueries(boolean RxZ#`$F
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cacheQueries){ $hM>%u
this.cacheQueries = cacheQueries; n;+e( ob;;
} O"Ua|8
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publicvoid setQueryCacheRegion(String |Vq&IfP
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queryCacheRegion){ HGJfj*JH
this.queryCacheRegion = R:}u(N
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queryCacheRegion; +&:?*(?Q
} v!b
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publicvoid save(finalObject entity){ i9FtS7
getHibernateTemplate().save(entity); 5|^{t00T~
} ./!6M
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publicvoid persist(finalObject entity){ }[%d=NY
getHibernateTemplate().save(entity); ])YGeY(V0+
} m=7Z8@sX},
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publicvoid update(finalObject entity){ -Ze{d$
getHibernateTemplate().update(entity); !;1$1xWK
} iNxuQ7~
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publicvoid delete(finalObject entity){ 7KzMa%=
getHibernateTemplate().delete(entity); ~.,h12
} G',*"mZQ[
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publicObject load(finalClass entity, :y!%GJW
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finalSerializable id){ ]XAJ|[]sj*
return getHibernateTemplate().load %}*0l8y
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(entity, id); cx(W{O"Jb
} nfV32D|3
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publicObject get(finalClass entity, X%>Sio
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finalSerializable id){ 1p[Z`m*9
return getHibernateTemplate().get dT9ekNQB
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(entity, id); v-J9N(y"
} x`#|8
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publicList findAll(finalClass entity){ RXj6L~vs5_
return getHibernateTemplate().find("from z U~o"Jv
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" + entity.getName()); >nnjLrI
} c T!L+zg
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publicList findByNamedQuery(finalString ZPISclSA+
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namedQuery){ p`i_s(u
return getHibernateTemplate N {$'-[
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().findByNamedQuery(namedQuery); X@[)jWs
} { fmY_T[Q8
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publicList findByNamedQuery(finalString query, D<m+M@u
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finalObject parameter){ a V4p0s6ZZ
return getHibernateTemplate u*<G20~A
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().findByNamedQuery(query, parameter); jb~/>I^1
} H$/r{gfg^
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publicList findByNamedQuery(finalString query, 7fOk]Yl[
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finalObject[] parameters){ | Ts0h?"a
return getHibernateTemplate =7Wr
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().findByNamedQuery(query, parameters); r9a?Y!(
} t1I` n(]n
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publicList find(finalString query){ XU}|Ud562
return getHibernateTemplate().find UBUZ}ZIbN
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(query); .Fy f4^0
} &m'ttUG?
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publicList find(finalString query, finalObject dtdz!'q)Y
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parameter){ CS:mO|
return getHibernateTemplate().find "z^&>#F
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(query, parameter); 5 E%dF9q
} LZCziW
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public PaginationSupport findPageByCriteria }wJDHgt]-p
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(final DetachedCriteria detachedCriteria){ ;!CYp;_
return findPageByCriteria ydNcbF%K
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); nr#DE?
} kW#{[,7r
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public PaginationSupport findPageByCriteria \gh`PS-B
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(final DetachedCriteria detachedCriteria, finalint @+v;B:
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startIndex){ s^/<6kwO
return findPageByCriteria y<G@7?
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(detachedCriteria, PaginationSupport.PAGESIZE, ?w}E/(r
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startIndex); Ba$Ibq,r/
} i6^COr
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public PaginationSupport findPageByCriteria {5f?y\Z
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(final DetachedCriteria detachedCriteria, finalint 2/9P&c-r