Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 R\y'_S=#a
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 IM]h*YV'
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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
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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 6klD22b2$
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分页支持类: snq;:n!
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java代码: QoseS/
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package com.javaeye.common.util;
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import java.util.List; r&Qt_
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publicclass PaginationSupport { K"^cq~
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publicfinalstaticint PAGESIZE = 30; x{?sn
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privateint pageSize = PAGESIZE; fp tIc#4
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privateList items; QoWR@u6a
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privateint totalCount; 4|=vxJ
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privateint[] indexes = newint[0]; vcM~i^24)
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privateint startIndex = 0; 8,y{q9O
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public PaginationSupport(List items, int K( z[}
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totalCount){ 69iM0X!'u
setPageSize(PAGESIZE); xl9(ze
setTotalCount(totalCount); OGGSS&5tw
setItems(items); 1OP"5f
setStartIndex(0); k:mlt:
} ]LVnt-q
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public PaginationSupport(List items, int .jaZ|nN8`
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totalCount, int startIndex){ -O %[!&`
setPageSize(PAGESIZE); q}sK
setTotalCount(totalCount); &rP~`4Mkp
setItems(items); @Kp1k> ov
setStartIndex(startIndex); =Sa~\k+
} |
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public PaginationSupport(List items, int +dM.-wW
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totalCount, int pageSize, int startIndex){ PF67z]<o
setPageSize(pageSize); v4C3uNW
setTotalCount(totalCount); ee^4KKsh\
setItems(items); jr:drzr{I
setStartIndex(startIndex); |eF.ZC)QWh
} ,H@TYw
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publicList getItems(){ CC>($k"
return items; L&QtHSzy
} Q K j1yG0i
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publicvoid setItems(List items){ {Hr>X
this.items = items; U&X.
} ) G|"jFP
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publicint getPageSize(){ ,O2q+'&
return pageSize; @ct#s:t
} 2]3G1idB
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publicvoid setPageSize(int pageSize){ F'XlJ M
this.pageSize = pageSize; tI'e ctn
} \QiqcD9Y
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publicint getTotalCount(){ aoK4Du{
return totalCount; Txu>/1N,
} aX]y`
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publicvoid setTotalCount(int totalCount){ 1 0V+OIC
if(totalCount > 0){ C`pan /t
this.totalCount = totalCount; B6uf;Yc
int count = totalCount / oW8;^u
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pageSize; *5^ze+:
if(totalCount % pageSize > 0) `u$24h'!
count++; CM"s9E8y
indexes = newint[count]; eiOi3q
for(int i = 0; i < count; i++){ f)WPOTEY
indexes = pageSize * pRmE ryR(U
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} ${e -ffyy
}else{ 9'l.TcVm`,
this.totalCount = 0; kr6:{\DU:B
} |NXFla
} L^&do98
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publicint[] getIndexes(){ eZ[#+0J
return indexes; iKY-;YK
} jD<9=B(g
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publicvoid setIndexes(int[] indexes){ C>M6&=
this.indexes = indexes; 8XgVY9]Qm
} c'SM>7L
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publicint getStartIndex(){ aQC7 V !v
return startIndex; K:C+/O
} 7~:>WMv9
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publicvoid setStartIndex(int startIndex){ j_hjCQ
if(totalCount <= 0) oA[2)BU
this.startIndex = 0; - f+CyhR"*
elseif(startIndex >= totalCount) dnk1Mu<
this.startIndex = indexes uLF\K+cz
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[indexes.length - 1]; ud5x$`
elseif(startIndex < 0) r*xq(\v
this.startIndex = 0; 9
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else{ l8eT{!4
this.startIndex = indexes zC[i <'h!T
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[startIndex / pageSize]; Idt@Hk5<&
} zv>ZrFl*
} Z5 w`-#
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publicint getNextIndex(){ qEPf-O:lm
int nextIndex = getStartIndex() + yZQ1]
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pageSize; k:@a[qnY
if(nextIndex >= totalCount) _$~ex ~v
return getStartIndex(); i_'|:Uy*F
else X}kVBT1w+x
return nextIndex; <1v{[F_
} 'Wd3`4V$
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publicint getPreviousIndex(){ X+fuhcn
int previousIndex = getStartIndex() - K%o6hBlk_
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pageSize; hrUm}@d
if(previousIndex < 0) )WzGy~p8K
return0; Sz^TGF
else PL9zNCr-[
return previousIndex; jqV)V> M.
} aU,0gvI(}
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} }//8$Z<(
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抽象业务类 uMljH@xBc
java代码: 2y&_Z^kI?
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/** yL^M~lws
* Created on 2005-7-12 _:/Cl9~
*/ \3J+OY
package com.javaeye.common.business; g6tWU
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import java.io.Serializable; 5M/%%Ox
import java.util.List; x0N-[//YV
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import org.hibernate.Criteria; 4+Li)A:4.
import org.hibernate.HibernateException; p7?CeyZ-V
import org.hibernate.Session; T +|J19
import org.hibernate.criterion.DetachedCriteria; >"2\D|-/
import org.hibernate.criterion.Projections; 5pN08+
import Off: ~
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org.springframework.orm.hibernate3.HibernateCallback; eHfG;NsV/
import
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org.springframework.orm.hibernate3.support.HibernateDaoS -;W\f<q]
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upport; IeqWR4Y
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import com.javaeye.common.util.PaginationSupport; uaZ"x&oZ#
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public abstract class AbstractManager extends =N[V{2}q
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HibernateDaoSupport { }kgjLaQ^N
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privateboolean cacheQueries = false; QBN=l\m+
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privateString queryCacheRegion; soFvrl^Ql+
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publicvoid setCacheQueries(boolean o{YW
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cacheQueries){ =l?"=HF
this.cacheQueries = cacheQueries; qW` XA
} .$}Z:,aB
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publicvoid setQueryCacheRegion(String .3g\[p
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queryCacheRegion){ .wt>.mUH
this.queryCacheRegion = XQ+-+CD
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queryCacheRegion; !Ed<xG/
} *cb
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publicvoid save(finalObject entity){ `
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getHibernateTemplate().save(entity); c=jTs+h'
} *n$m;yI
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publicvoid persist(finalObject entity){ i85+p2i7
getHibernateTemplate().save(entity); Sf.8Ibw
} T{ v<