Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 8H4NNj Oy
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ~s+vJvWz
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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 i9L]h69r
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分页支持类: g)#?$OhP"
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java代码: oE+P=
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package com.javaeye.common.util; >8"(go+02
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import java.util.List; A M[f
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publicclass PaginationSupport { 8lM=v> Xc
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publicfinalstaticint PAGESIZE = 30;
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privateint pageSize = PAGESIZE; C$[iduS
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privateList items; `D(V_WZ
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privateint totalCount; 08xo_Oysq
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privateint[] indexes = newint[0]; ]owgsR
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privateint startIndex = 0; ^W$R{`
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public PaginationSupport(List items, int >1`4]%
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totalCount){ _O}m0c
setPageSize(PAGESIZE); 2"G9?)d9
setTotalCount(totalCount); #$Zx ].[lc
setItems(items); p? L%'
setStartIndex(0); (e'8>Pv
} _ \4#I(
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public PaginationSupport(List items, int =H)]HxEEM
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totalCount, int startIndex){ trDw|WA
setPageSize(PAGESIZE); O5r8Ghf)
setTotalCount(totalCount); q%x i>H.:{
setItems(items); 'etA1]<N
setStartIndex(startIndex); OM1Z}%J
} =x-7 Wy
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public PaginationSupport(List items, int )IcSdS0@M
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totalCount, int pageSize, int startIndex){ lC#wh2B6
setPageSize(pageSize); Q!q6R^5!K
setTotalCount(totalCount); d'W2I*Zc<
setItems(items); F9eEQ{L
setStartIndex(startIndex); uMDd Zj&
} $=.%IJ_MAz
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publicList getItems(){ :O413#8
return items; Pp }Z"
} 9;LjM ~Ct
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publicvoid setItems(List items){ =W7-;&
this.items = items; o:{Sws(=
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publicint getPageSize(){ 8p 4[:M@
return pageSize; 1*p6UR&
} =
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publicvoid setPageSize(int pageSize){ z6U'"T"a
this.pageSize = pageSize; 4tkT\.
} \C$e+qb~{
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publicint getTotalCount(){ B]tj0FB`-*
return totalCount; /!0&b?
} Xb:*
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publicvoid setTotalCount(int totalCount){ OvT[JpV
if(totalCount > 0){ qfXt%6L
this.totalCount = totalCount; {{G3^ysa
int count = totalCount / t)j$lmQn
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pageSize; n>pJ/l%`
if(totalCount % pageSize > 0) E@C.}37R
count++; :oy2mi;
indexes = newint[count]; {xg=Ym)
for(int i = 0; i < count; i++){ *KNfPh#wi}
indexes = pageSize * 9~`#aQG T
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} iN8[^,2H|
}else{
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this.totalCount = 0; )!0}<_2
} I;rW!Hb
} Evj%$7H1L1
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publicint[] getIndexes(){ eikZ~!@
return indexes; eW 4[2Q
} Z&>Cdgt*
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publicvoid setIndexes(int[] indexes){ t#(=$
this.indexes = indexes; WD\Yx~o
} >N al\
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publicint getStartIndex(){ -6J <{1V
return startIndex; MUbKlX
} zlP{1z;nV
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publicvoid setStartIndex(int startIndex){ l|
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if(totalCount <= 0) Rw
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this.startIndex = 0;
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elseif(startIndex >= totalCount) mTsyVji8
this.startIndex = indexes k~AtnI
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[indexes.length - 1]; Vj4 h#NN$
elseif(startIndex < 0) 564L.^$@|
this.startIndex = 0; />E
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else{ q`PA~C];
this.startIndex = indexes 1|8Bv0-b
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[startIndex / pageSize]; M-].l3
} h._eP.W `
} 3:Nc`tM_
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publicint getNextIndex(){ 1\,k^Je7
int nextIndex = getStartIndex() + Gjeb)Y6N
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pageSize; >"IG\//I
if(nextIndex >= totalCount) \},H\kK+^
return getStartIndex(); -3yK>\y=|
else 5 ph CEKt;
return nextIndex; Q&PWW#D
} @+t|Aa^g
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publicint getPreviousIndex(){ t0fgG/f'
int previousIndex = getStartIndex() - @D-I@Cyl
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pageSize; nGWy4rY2S
if(previousIndex < 0) F(.`@OO
return0; oUsfO-dET^
else 7:F0?l*
return previousIndex; 43h06X`
} HqsqUS3[
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抽象业务类 u~*A-X[
java代码: f_PH?
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/** |WS@q'
* Created on 2005-7-12 i 1w]j
*/ evZP*N~G
package com.javaeye.common.business; p #w8$Qjp
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import java.io.Serializable; @ NDcO,]
import java.util.List; 8F<|.V;
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import org.hibernate.Criteria; IT= y+
import org.hibernate.HibernateException; /"="y'Wx
import org.hibernate.Session; % S"z9@
import org.hibernate.criterion.DetachedCriteria; n;.
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import org.hibernate.criterion.Projections; ,&3+w~Ua
import E>
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org.springframework.orm.hibernate3.HibernateCallback; +JG05h%'
import WFc4(Kl
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org.springframework.orm.hibernate3.support.HibernateDaoS \nP79F0%2
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upport; ~M*
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import com.javaeye.common.util.PaginationSupport; `+(n+QS _
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public abstract class AbstractManager extends kD+#| f
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HibernateDaoSupport { PW%ith1)<
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privateboolean cacheQueries = false; m4W (h6
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privateString queryCacheRegion; 7hx^U90K
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publicvoid setCacheQueries(boolean h&i(Kfv*
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cacheQueries){ %!-t7K^mFq
this.cacheQueries = cacheQueries; k>MXOUaW.
} jqvw<+#
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publicvoid setQueryCacheRegion(String p`&{NR3+
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queryCacheRegion){ `Ivt)T+n;
this.queryCacheRegion = h*KDZ+{)
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queryCacheRegion; ^y ', l
} Ow1+zltgj-
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publicvoid save(finalObject entity){ Pl|I{l*o(`
getHibernateTemplate().save(entity); :T PG~`k(
} SF:{PgGMi
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publicvoid persist(finalObject entity){ SkipPEhA
getHibernateTemplate().save(entity); [-#1;!k
} OY|9V
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publicvoid update(finalObject entity){ YH%U$eS#g
getHibernateTemplate().update(entity); 9`/ywt3Y
} \Qv:7;?
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publicvoid delete(finalObject entity){ X`v6gv5qj
getHibernateTemplate().delete(entity); (/&ht-~EL
} Q ijO%)
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publicObject load(finalClass entity, t3}_mJ
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finalSerializable id){ -KbO[b\V
return getHibernateTemplate().load 8Dxg6>
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(entity, id); 2>x[_
} /^{Q(R(X<
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publicObject get(finalClass entity, .'+JA:3R
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finalSerializable id){ ZA_~o#0%
return getHibernateTemplate().get
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(entity, id); ;1,#rTs
} +LWgby4q
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publicList findAll(finalClass entity){ WH $*\IGJL
return getHibernateTemplate().find("from gQ '=mU
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" + entity.getName()); YP"%z6N@v
} #/`MYh=!W
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publicList findByNamedQuery(finalString OB(~zUe.R
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namedQuery){ kz#x6NXj
return getHibernateTemplate },5LrX`L
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().findByNamedQuery(namedQuery); H lFVc
} {![E)~
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publicList findByNamedQuery(finalString query, |QH )A
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finalObject parameter){ B%[#["Ol
return getHibernateTemplate +C`vO5\0
{ iLr$89
().findByNamedQuery(query, parameter); RKs_k`N0
} }?GeU
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publicList findByNamedQuery(finalString query, 0j#$Swa
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finalObject[] parameters){ N9Fu
return getHibernateTemplate HwMe^e;
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().findByNamedQuery(query, parameters); TSL/zTLDJ
} mp]UUpt
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publicList find(finalString query){ Q6X}R,KA1
return getHibernateTemplate().find -Xgup,}?
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(query); [z}$G:s
} -cXVkH{
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publicList find(finalString query, finalObject Zr\G=0`
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parameter){ ]=0D~3o3
return getHibernateTemplate().find +w3k_^X9c
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(query, parameter); b{e|~v6&
} |TBKsx8
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public PaginationSupport findPageByCriteria 9EZh~tdV[
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(final DetachedCriteria detachedCriteria){ uUpOa+t
return findPageByCriteria TU8K\;l]
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); `jFvG\aC
} yF&?gPh&
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public PaginationSupport findPageByCriteria 2-wvL&pi)
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(final DetachedCriteria detachedCriteria, finalint GZFLJu
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startIndex){ ws}>swR,
return findPageByCriteria g!;Hv
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(detachedCriteria, PaginationSupport.PAGESIZE, .Wci@5:3
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startIndex); (e{pAm
} oU~ e|
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