Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 UaG
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 a*/%EP3
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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 ;d5d$Np@m&
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 Ls51U 7
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分页支持类: *7cc4 wGQ
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java代码: w\SfzJN
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package com.javaeye.common.util; GE?M. '!{{
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import java.util.List; 1!/WC.0
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publicclass PaginationSupport { n3x<L:)
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publicfinalstaticint PAGESIZE = 30; -aSj-
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privateint pageSize = PAGESIZE; P~xP@?I%
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privateList items; ,Kl6vw8Htg
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privateint totalCount; A-S!Z2m\
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privateint[] indexes = newint[0]; mLGbwm'K
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privateint startIndex = 0; 5|:t$
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public PaginationSupport(List items, int (58}G2}q
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totalCount){ $Jc>B#1
setPageSize(PAGESIZE); h=*eOxR"4^
setTotalCount(totalCount); ^&8FwV]
setItems(items); )+L.$h
setStartIndex(0); 1>)q5D
}
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public PaginationSupport(List items, int P80mK-Iyv_
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totalCount, int startIndex){ 'jnR<>N
setPageSize(PAGESIZE); lD+f{GR
setTotalCount(totalCount); tMbracm
setItems(items); jt5:rWB
setStartIndex(startIndex);
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} CQ;.}=j
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public PaginationSupport(List items, int ( :h#H[F
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totalCount, int pageSize, int startIndex){ {VK
setPageSize(pageSize); rP%B#%;S"
setTotalCount(totalCount); sR;^7(f!m
setItems(items); 3OZu v};k
setStartIndex(startIndex); /k_?S?
} /l6r4aO2=
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publicList getItems(){ "~+?xke5z
return items; SN<Dxa8Iy
} |K(jXZ)
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publicvoid setItems(List items){ v$JhC'
this.items = items; e^%>_U
} dsrKHi
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publicint getPageSize(){ DuvI2ZWP]
return pageSize; (?W[#.=7
} oj$^87KX
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publicvoid setPageSize(int pageSize){ : *g3PhNE
this.pageSize = pageSize; rb_FBa%
} zt3y5'Nk
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publicint getTotalCount(){ I%?ia5]H
return totalCount; wgPkSsuBuC
} '.$va<
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publicvoid setTotalCount(int totalCount){ h+d \u
if(totalCount > 0){ u&-Zh@;Q7
this.totalCount = totalCount; 'h*^;3@*
int count = totalCount / .5AyB9a%&
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pageSize; xtq='s8e
if(totalCount % pageSize > 0) Ec4+wRWk85
count++; P/?'ea
indexes = newint[count]; c|hT\1XR,
for(int i = 0; i < count; i++){ rY:A LA
indexes = pageSize * Et0[HotO
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} %4#Q3YlyD
}else{ F Bk_LEcX
this.totalCount = 0; ]>_Ie?L)<
} v<u`wnt
} |,)=-21&;
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publicint[] getIndexes(){ \2U F J
return indexes; |A/)b78'u
} >0c4C<_
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publicvoid setIndexes(int[] indexes){ 9vL n#_
this.indexes = indexes; z]d2
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} Kh'7N!
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publicint getStartIndex(){ /&jh10}H
return startIndex; ~k[mowz0
} 40i]I@:JK
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publicvoid setStartIndex(int startIndex){ vCe]iB
if(totalCount <= 0) ^|kqy<<X
this.startIndex = 0; W? SFtz
elseif(startIndex >= totalCount) uKF)'gj
this.startIndex = indexes 1;FtQnvH
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[indexes.length - 1]; !kG 2$/lR
elseif(startIndex < 0) $kD;*v=
this.startIndex = 0; S#[w).7
else{ y7Sey;
this.startIndex = indexes WJ[ybzVj
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[startIndex / pageSize]; WJA0 `<~
} 1[U`,(C1
} .W*" C
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publicint getNextIndex(){ e{RhMjX<D
int nextIndex = getStartIndex() + lHI;fR
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pageSize; IMT]!j&Y,
if(nextIndex >= totalCount) tQYkH$e`/{
return getStartIndex(); At$[&%}
else I|eYeJ3
return nextIndex; m6 V L
} edZhI
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publicint getPreviousIndex(){ z-g"`w:Lj
int previousIndex = getStartIndex() - (;6vT'hE
Eb.k:8?Tn
pageSize; @;1Ym\zc
if(previousIndex < 0) gAxf5A_x)
return0; u+_6V
else 6aq=h`Y
return previousIndex; +B#+'
} *^=zQ~
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} _GF{Duxh
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抽象业务类
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java代码: gi#g)9HG
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/** %}/ |/=
* Created on 2005-7-12 tmVGJ+gz
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package com.javaeye.common.business; P g.j]
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import java.io.Serializable; FzM<0FJRX
import java.util.List; <Y"h2#M "
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import org.hibernate.Criteria; 5!V%0EQqw
import org.hibernate.HibernateException; C;jV)hr6P
import org.hibernate.Session; S(
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import org.hibernate.criterion.DetachedCriteria; QXLHQ_V
import org.hibernate.criterion.Projections; zNRR('B?
import HpGI\s
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org.springframework.orm.hibernate3.HibernateCallback; Uw5AHq).
import K}a3Bj,
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org.springframework.orm.hibernate3.support.HibernateDaoS 5SQqE@g%
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upport; _|f_%S8a_=
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import com.javaeye.common.util.PaginationSupport; yO*HJpc
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public abstract class AbstractManager extends $Si|;j$?
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HibernateDaoSupport { &|Cd1z#?
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privateboolean cacheQueries = false; Sece#K2J|
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privateString queryCacheRegion; /+JHnedK
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publicvoid setCacheQueries(boolean W:S?_JM
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cacheQueries){ mO8E-D*3
this.cacheQueries = cacheQueries; 3!qp+i)?
} `&w{-om\
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publicvoid setQueryCacheRegion(String Q4e+vBECkq
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queryCacheRegion){ p{0NKyOvU
this.queryCacheRegion = `JzP V/6
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queryCacheRegion; #dhce0m
} y*7{S{9
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publicvoid save(finalObject entity){ ]@wKm1%v
getHibernateTemplate().save(entity); c\DMeYrg
} }-N4D"d4o
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publicvoid persist(finalObject entity){ n"g)hu^B
getHibernateTemplate().save(entity); 3](At%ss
} aNDpCpy
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publicvoid update(finalObject entity){ {YMO8
getHibernateTemplate().update(entity); ,vs# (d6 G
} hq*"S-N
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publicvoid delete(finalObject entity){ PUbfQg
getHibernateTemplate().delete(entity); U%V4@iz~\m
} FT[of(g^
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publicObject load(finalClass entity, mPJ@hr%3
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finalSerializable id){ e#!,/pE
return getHibernateTemplate().load S=_*<[W%4
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(entity, id); k, >*.Yoh
} (MzThGJK_
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publicObject get(finalClass entity, +.
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finalSerializable id){ ]Wg&r Y0
return getHibernateTemplate().get z*e`2n#\
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(entity, id); %G/(7l[W
} pF<KhE*V
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publicList findAll(finalClass entity){ S5/p3;O\c
return getHibernateTemplate().find("from K_GqM9
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" + entity.getName()); '4)4* 3z,
} ,Q,3^v-
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publicList findByNamedQuery(finalString Y,M2D
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namedQuery){ 2Kz407|'
return getHibernateTemplate @pN6uDD}R
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().findByNamedQuery(namedQuery); -GZ:}<W6+
} zn#lFPj12
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publicList findByNamedQuery(finalString query, hh8U/dVk*
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finalObject parameter){ [PH56f
return getHibernateTemplate `N;O6
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