Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 nnBgTtsC]
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 gI^);JrTE
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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 nquKeH
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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 AF{k^^|H
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分页支持类: bS
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java代码: %qA +zPf
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package com.javaeye.common.util; w, 0tY=h6
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import java.util.List; Ph&AP*Fq
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publicclass PaginationSupport { \ iL&Aq}BO
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publicfinalstaticint PAGESIZE = 30; @_0g "Ul
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privateint pageSize = PAGESIZE; 0x'-\)v>3
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privateList items; %hK?\Pg3=E
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privateint totalCount; 4XL*e+UfJ
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privateint[] indexes = newint[0]; Hfer\+RX
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privateint startIndex = 0; DM6oMT
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public PaginationSupport(List items, int fShf4G_w\
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totalCount){ pL$UI3VCP
setPageSize(PAGESIZE); OwIW;8Z
setTotalCount(totalCount); I`h9P2~
setItems(items); )Q 8T`Tly
setStartIndex(0); IY|;}mIF
} W5-p0,?[6
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public PaginationSupport(List items, int 02X ~' To"
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totalCount, int startIndex){ bAeN>~WvY
setPageSize(PAGESIZE); SsjO1F
setTotalCount(totalCount); qE6:`f
setItems(items); ie$QKoE
setStartIndex(startIndex); :W5*fE(i
} kr7f<;rmJ
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public PaginationSupport(List items, int 5YIiO7@4
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totalCount, int pageSize, int startIndex){ K5(?6hr;
setPageSize(pageSize); e,Xvt5
setTotalCount(totalCount); *iF>}yh e
setItems(items); 6w K=
setStartIndex(startIndex); -tT{h4
} ,=lMtW
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publicList getItems(){ )!MeSWGq
return items; '<f4POy!
} TyMRm
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publicvoid setItems(List items){ 87EI<\mP
this.items = items; );$Uf!v4
} ~\hA-l36
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publicint getPageSize(){ tklU
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return pageSize; D8_m_M|P
} xMtl<Na
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publicvoid setPageSize(int pageSize){ h 88iZK
this.pageSize = pageSize; _jef{j
} yhEU*\:
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publicint getTotalCount(){ D0PP
return totalCount; U;Hu:q*
} TJ`E/=J!
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publicvoid setTotalCount(int totalCount){ WX
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if(totalCount > 0){ DVD}
this.totalCount = totalCount; ~! ]FF}6
int count = totalCount / :<%K6?'@^
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pageSize; [7]p\'j
if(totalCount % pageSize > 0) |LKhT4rE
count++; }.gDaxj
indexes = newint[count]; ;: Hfkyy]
for(int i = 0; i < count; i++){ {a_=4a
indexes = pageSize * po"M$4`9
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} 5<4njo?k
}else{ {#q<0l
this.totalCount = 0; .D^k0V
} HeGGAjc
} xN2M|E]
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publicint[] getIndexes(){ /'E+(Y&:J
return indexes; $${ebt
} %kNkDI
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publicvoid setIndexes(int[] indexes){ ]V]~I.
this.indexes = indexes; PK3)M'[
} ?C.C?h6F5B
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publicint getStartIndex(){ )rhKWg
return startIndex; hr@KWE`
} A3&8@/6,
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publicvoid setStartIndex(int startIndex){ M6AQ8~z
if(totalCount <= 0) P>L-,R(7e
this.startIndex = 0; OdRXNk:k-j
elseif(startIndex >= totalCount) yhQo1e>
this.startIndex = indexes _w+sx5
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[indexes.length - 1]; Sijwh1j*V
elseif(startIndex < 0) 4,FkA_k
this.startIndex = 0; ;^}cZ
else{ lZ^XZjwoM
this.startIndex = indexes CJjma=XH
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[startIndex / pageSize]; 3`#sXt9C
} nUmA
} #zrD i
@[zPN[z.
publicint getNextIndex(){ Ca+d
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int nextIndex = getStartIndex() + ,Q(n(m'
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pageSize; GOH@|2N
if(nextIndex >= totalCount) .XLe\y
return getStartIndex(); L)Un9&4L
else y+Q!4A
return nextIndex; p`{<q
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} .eZ4?|at.F
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publicint getPreviousIndex(){ OD>-^W t;%
int previousIndex = getStartIndex() - ; {I{X}b
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pageSize; JEY%(UR8
if(previousIndex < 0) 2c0eh-Gf
return0; _}jj>+zA`
else W@"M/<r@/
return previousIndex; yuFuYo&[?v
} 1P8$z:|~
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} M P0ww$(
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抽象业务类 |[!xLqG
java代码: x"AYt:ewuc
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/** $C#~c1w
* Created on 2005-7-12 ^_5$+
*/ p4{?Rhb6
package com.javaeye.common.business; Z`b,0[rG[
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import java.io.Serializable; 22tY%Y9
import java.util.List; 6EX:qp^`
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import org.hibernate.Criteria; ?H*_:?=6
import org.hibernate.HibernateException; z_JZx]*/
import org.hibernate.Session; 1Lj\"+.
import org.hibernate.criterion.DetachedCriteria; )}G
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import org.hibernate.criterion.Projections; [`ttNW(_
import ,Hys9I
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org.springframework.orm.hibernate3.HibernateCallback; ~Gwn||g78
import gvA&F|4
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org.springframework.orm.hibernate3.support.HibernateDaoS L>@0Nne7
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upport; J|6aa
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import com.javaeye.common.util.PaginationSupport; Mv4JF(,S
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public abstract class AbstractManager extends f_raICO{R
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HibernateDaoSupport { "]MF =-v
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privateboolean cacheQueries = false; ?1PY]KNaK
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privateString queryCacheRegion; iy$]9Wf6=@
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publicvoid setCacheQueries(boolean 7qL]_u[^
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cacheQueries){ lZn <v'y
this.cacheQueries = cacheQueries; gN mp'Lm
} B>?. Nr
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publicvoid setQueryCacheRegion(String 'Iu$4xo`[
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queryCacheRegion){ cE]tvL:g
this.queryCacheRegion = C=PBF\RkKu
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queryCacheRegion; {Qw,L;R
} IUu[`\b=
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publicvoid save(finalObject entity){ $)7-wCl</
getHibernateTemplate().save(entity); p(0!TCBs
} (''`Ce
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publicvoid persist(finalObject entity){ .' .|s?s
getHibernateTemplate().save(entity); >DbG$V<v'
} ;Rwr5
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publicvoid update(finalObject entity){ yRvq3>mU
getHibernateTemplate().update(entity); OSkZW
} sBRw#xyS
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publicvoid delete(finalObject entity){ ^vG*8,^S=8
getHibernateTemplate().delete(entity); 8swj'SjX
} |L`w4;
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publicObject load(finalClass entity, ^8V]g1]fiG
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finalSerializable id){ JN3Oe5yB2@
return getHibernateTemplate().load o"UqI
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(entity, id); vaK$j!%FE
} rm"bplLZA
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publicObject get(finalClass entity, AeUwih.
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finalSerializable id){ O 6A:0yM4
return getHibernateTemplate().get &+*jTE
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(entity, id); eU{=x$o6S
} MWhFNfS8=
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publicList findAll(finalClass entity){ r ."Dc
return getHibernateTemplate().find("from ~@sx}u
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" + entity.getName()); 26\1tOj Np
} Q*KEODR8\
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publicList findByNamedQuery(finalString z),l&7
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namedQuery){ -{L[Wt{1
return getHibernateTemplate \>I&UFfH)4
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().findByNamedQuery(namedQuery); "&C'K
} 4H1s"mP<
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publicList findByNamedQuery(finalString query, DUW;G9LP$-
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finalObject parameter){ c]xpp;% ]
return getHibernateTemplate =|?w<qc
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().findByNamedQuery(query, parameter); t3bDi/m
} y'E)iI*
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publicList findByNamedQuery(finalString query, k92189B9j/
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finalObject[] parameters){ J-I7K!B
return getHibernateTemplate L'['7
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().findByNamedQuery(query, parameters); .g4bV5ma3
} `9$?g|rB
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publicList find(finalString query){ 4Q3Q.(
return getHibernateTemplate().find A?6b)B/e?
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(query); R8HA X
} IlS{>6
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publicList find(finalString query, finalObject ;%U`lE0
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parameter){ Vwv O@G7A
return getHibernateTemplate().find VMtR4! :q
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(query, parameter); ]A'e+RD4k
} nre8 F
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public PaginationSupport findPageByCriteria ][qZOIk@
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(final DetachedCriteria detachedCriteria){ h!)(R<
return findPageByCriteria %7V?7BE
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); w1s#8:
} ?|8H$1
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public PaginationSupport findPageByCriteria 2Jj`7VH>
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(final DetachedCriteria detachedCriteria, finalint tpCEWdn5
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startIndex){ F]YPq
return findPageByCriteria eH1Y!&`
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(detachedCriteria, PaginationSupport.PAGESIZE, 0e/~H^,SQ
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startIndex); }*0%wP
} :!aFfb["
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public PaginationSupport findPageByCriteria NG b`f-:jw
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(final DetachedCriteria detachedCriteria, finalint @zPWu}&m
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pageSize, oM< &4F
finalint startIndex){ /+66y=`UJ
return(PaginationSupport) U;{VL!
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getHibernateTemplate().execute(new HibernateCallback(){ jp&