Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 6SO7iFS
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 &p4<@k\L
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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 _1c_TM h}9
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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 >b?)WNk
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分页支持类: ld?.o/
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java代码: gK\7^95
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package com.javaeye.common.util; Bic {
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import java.util.List; (+ anTA=
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publicclass PaginationSupport { r$Qh`[<
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publicfinalstaticint PAGESIZE = 30; Ka\b_P&
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privateint pageSize = PAGESIZE; aW$nNUVD
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privateList items; 4PM`hc
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privateint totalCount; ZUW>{'[K
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privateint[] indexes = newint[0]; gSYX @'Q!
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privateint startIndex = 0; Z@/5~p
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public PaginationSupport(List items, int @0'|Uygn
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totalCount){ 5305N!
setPageSize(PAGESIZE); eJp-s" %
setTotalCount(totalCount); ;}'<`(f&nX
setItems(items); [`\Qte%UH
setStartIndex(0); Vnb#N4vR
} BmXGk
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public PaginationSupport(List items, int Ps\^OJR
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totalCount, int startIndex){ ", )
setPageSize(PAGESIZE); $u"$mg7x
setTotalCount(totalCount); :XZ
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setItems(items); 6|}mTG^
setStartIndex(startIndex);
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} Ntiz-qW
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public PaginationSupport(List items, int LWV`xCr8R
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totalCount, int pageSize, int startIndex){ c.v)M\:
setPageSize(pageSize); q8>Q,F`BA
setTotalCount(totalCount); cyNLeg+O*
setItems(items); =C)1NJx&~
setStartIndex(startIndex); 4/>={4Y9
} -m/4\D
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publicList getItems(){ V}qmH2h
return items; n\Ixv
} Shz;)0To
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publicvoid setItems(List items){ yk{al SF
this.items = items; KL4/"$l]
} sXu+F2O
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publicint getPageSize(){ sN2l[Ous
return pageSize; >k|[U[@
} lV'83
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publicvoid setPageSize(int pageSize){ 9MxGyGz$
this.pageSize = pageSize; [_n|n"M
} zhE7+``g
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publicint getTotalCount(){ B!@0(A
return totalCount; +$5^+C\6A
} Cq~Ir*"
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publicvoid setTotalCount(int totalCount){ 's<}@-]
if(totalCount > 0){ S}X:LHr*
this.totalCount = totalCount;
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int count = totalCount / d%bL_I)
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pageSize; &bQ^J%\
if(totalCount % pageSize > 0) *Y Ox`z!R
count++; k
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indexes = newint[count]; x5ia<V>=d
for(int i = 0; i < count; i++){ Kl? 1)u3^4
indexes = pageSize * z@~rm9d
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} CR<l"~X
}else{ Ry C7
this.totalCount = 0; GCHssw~P'v
} zVu}7v()
} P6Ei!t,>
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publicint[] getIndexes(){ X}$S|1CjO
return indexes; xpz
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} [z\*Zg
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publicvoid setIndexes(int[] indexes){ k:sh:G+=$d
this.indexes = indexes; Y2Bu,/9^
} pN[i%\vh
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publicint getStartIndex(){ eo!z>9#.
return startIndex; 'PZJ{8=
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publicvoid setStartIndex(int startIndex){ ScEM#9T |
if(totalCount <= 0) # /T)9 =m
this.startIndex = 0; 0!Yi.'+
elseif(startIndex >= totalCount) "2mVW_k
this.startIndex = indexes EOL03N
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[indexes.length - 1]; b> |oU
elseif(startIndex < 0) #ed]zI9O
this.startIndex = 0; ]l`DR4
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else{ zC7;Zj*k
this.startIndex = indexes uJQeZEe
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[startIndex / pageSize]; 95}"AIi
} Ks4TBi&J
} IcB>Hg5
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publicint getNextIndex(){ ctf'/IZ5
int nextIndex = getStartIndex() + ]BA8[2=m
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pageSize; CXa$QSu >
if(nextIndex >= totalCount) so;aN'{6@
return getStartIndex(); DGcd|>q
else }+z}vb
return nextIndex; "QMHY\C
} k,2%%m
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publicint getPreviousIndex(){ r_)*/
int previousIndex = getStartIndex() - 1*XqwBV
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pageSize; \o/oM,u
if(previousIndex < 0) ~!@a
return0; (q)W<GYP
else [=Xvp z
return previousIndex; 56fcifXz@
} Ox58L>:0m
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抽象业务类 %#=
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java代码: )F:hv[iv
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/** %GJ,&b|
* Created on 2005-7-12 Y#KgaZ7N
*/ a4c~ThbI
package com.javaeye.common.business; f)>=.sp
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import java.io.Serializable; gVO[R6C5C
import java.util.List; zI&oZH^vn
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import org.hibernate.Criteria; l2xM.vR
import org.hibernate.HibernateException; <}G7#xg
import org.hibernate.Session; z`lDD
import org.hibernate.criterion.DetachedCriteria; [8<)^k
import org.hibernate.criterion.Projections;
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import /aP`|&G,)
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org.springframework.orm.hibernate3.HibernateCallback; :hZYh.y\l
import ~qs97'
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org.springframework.orm.hibernate3.support.HibernateDaoS _L9`bzZj
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upport; Ye T[KjX
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import com.javaeye.common.util.PaginationSupport; +[ !K
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public abstract class AbstractManager extends u[})|x*N
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HibernateDaoSupport { I6~.sTl
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privateboolean cacheQueries = false; YuFJJAJ
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privateString queryCacheRegion; 3 cu`U`
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publicvoid setCacheQueries(boolean -b8Vz}Y
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cacheQueries){ 2/3,%5j_
this.cacheQueries = cacheQueries; xh,};TS(K
}
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publicvoid setQueryCacheRegion(String >:WnCkbp
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queryCacheRegion){ nD6NLV%2x
this.queryCacheRegion = 9t9x&.A
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queryCacheRegion; 0"#'Z>"
} r>+\9q1
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publicvoid save(finalObject entity){ !`JaYUL[e
getHibernateTemplate().save(entity); FWNWOU
} {1Z8cV
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publicvoid persist(finalObject entity){ nep0<&