Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 >~:Md
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 `%; Hj _X}
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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 V^Y'!w\LGI
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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 U}@xMt8@l
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分页支持类: 76H>ST@G|
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java代码: <aztbq?
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package com.javaeye.common.util; i/j53towe
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import java.util.List; vjjVZ
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publicclass PaginationSupport { ]
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publicfinalstaticint PAGESIZE = 30; G %'xEr0n
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privateint pageSize = PAGESIZE; ,qx^D
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privateList items; K!]a+M]>
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privateint totalCount; y];-D>jk
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privateint[] indexes = newint[0]; 8Qo'[+4;
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privateint startIndex = 0; dgL>7X=7
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public PaginationSupport(List items, int 0z'GN#mT5
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totalCount){ XEQTT D<
setPageSize(PAGESIZE); 4;fuS_(X
setTotalCount(totalCount); +x(#e'6p
setItems(items); %Yj%0
setStartIndex(0); f. "\~
} |~r-VV(=
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public PaginationSupport(List items, int /M_$4O;*@
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totalCount, int startIndex){ C,An\lsT
setPageSize(PAGESIZE); ZUHRATT-
setTotalCount(totalCount);
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setItems(items); #L~i|(=U5
setStartIndex(startIndex); +{1.kb
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} =j62tDS
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public PaginationSupport(List items, int lG}#K^q
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totalCount, int pageSize, int startIndex){ G18w3BFx
setPageSize(pageSize); $iu[-my_
setTotalCount(totalCount); 'v"=
setItems(items); /]_ t->
setStartIndex(startIndex); #;$]M4
} L=l&,ENy
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publicList getItems(){ z3Q&O$5\
return items; )h8}{*
} }d<R
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publicvoid setItems(List items){ `gX@b^
this.items = items; '+`[)w
} TmsIyDcD~
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publicint getPageSize(){ wDJ`#"5p{
return pageSize; rmiOeS`:
} mQj=-\p
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publicvoid setPageSize(int pageSize){ ieFl4hh[G
this.pageSize = pageSize; nlwqS Xw
} A&Y5z[p
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publicint getTotalCount(){ V'Gal`
return totalCount; \$ytmtf5
} eU[g@Pq:Y
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publicvoid setTotalCount(int totalCount){ IS2cU'
if(totalCount > 0){
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this.totalCount = totalCount; Mo,&h?VOM?
int count = totalCount / .%zcm
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pageSize; t|aV:x
if(totalCount % pageSize > 0) 2 !s&|lI
count++; }LzBo\
indexes = newint[count]; Zf'*pp T&q
for(int i = 0; i < count; i++){ Yj%]|E-
indexes = pageSize * #b/qR^2qW
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} #z\ub5um
}else{ J:xGEa t
this.totalCount = 0; #9vC]Gm
} x:Y9z_)O
} sV\_DP/l
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publicint[] getIndexes(){ y0zMK4b
return indexes; "6B7EH
} oQ!M+sRmF
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publicvoid setIndexes(int[] indexes){ RK3 yq$
this.indexes = indexes; x9_mlZ
} &m5zd$6
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publicint getStartIndex(){ o/5-T4
return startIndex; swKkY`g
} SQKhht`M
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publicvoid setStartIndex(int startIndex){ TT$Ao
if(totalCount <= 0) Q;h.}N8W
this.startIndex = 0; D /eH~
elseif(startIndex >= totalCount) ,_[x|8m
this.startIndex = indexes VYvfx
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[indexes.length - 1]; gQ1obT"|
elseif(startIndex < 0) ^ Ltho`
this.startIndex = 0; .Y)[c.,j
else{ 04a
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this.startIndex = indexes I>c,Bo7
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[startIndex / pageSize]; ?J}Q&p.
} \}j MC
} ,:_c-d#
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publicint getNextIndex(){ &C 9hT
int nextIndex = getStartIndex() + %,>z`D,Hg
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pageSize; nJDGNm,
if(nextIndex >= totalCount) Fq9YhR
return getStartIndex(); _)A|JC!jId
else X{9^$/XsJ
return nextIndex; <izQ]\kL
} -<iP$,bq72
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publicint getPreviousIndex(){ Z6!Up1
int previousIndex = getStartIndex() - ;>6< u.N
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pageSize; rhv~H"qzW
if(previousIndex < 0) te_2"Z
return0; kA:Y^2X'
else 8K%N7RL|
return previousIndex; MP]<m7669*
} 'Zx5+rM${}
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} Y&|Z*s+
+}
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抽象业务类 d;i|s[6ds`
java代码: iL/c^(1
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/** 5_yQI D%Sq
* Created on 2005-7-12 2y[Q
*/ JK,MK|
package com.javaeye.common.business; X>(1fra4
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import java.io.Serializable;
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import java.util.List; ^2+Ex+
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import org.hibernate.Criteria; pEyZH!W
import org.hibernate.HibernateException; dSI"yz
import org.hibernate.Session; h]7_
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import org.hibernate.criterion.DetachedCriteria; bG;fwgAr
import org.hibernate.criterion.Projections; 1{uxpYAP=
import 0uy'Py@2<
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org.springframework.orm.hibernate3.HibernateCallback; d0J/"<
import 0KA*6]h t
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org.springframework.orm.hibernate3.support.HibernateDaoS (P>nA3:UXB
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upport; +LHU}'|
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import com.javaeye.common.util.PaginationSupport;
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public abstract class AbstractManager extends #*A'<Zm
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HibernateDaoSupport { >t+ ENYb
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privateboolean cacheQueries = false; J+D|/^
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privateString queryCacheRegion; [8ZDMe
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publicvoid setCacheQueries(boolean fe .=Z&
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cacheQueries){ }n)0}U5;0
this.cacheQueries = cacheQueries; }i9:k kfq2
} +'F;\E
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publicvoid setQueryCacheRegion(String A%w9Da?B
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queryCacheRegion){ T CT8OU|
this.queryCacheRegion = *qpFtBg
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queryCacheRegion; 'Oa3
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} C-pR$WM:HN
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publicvoid save(finalObject entity){ &%J{uRp
getHibernateTemplate().save(entity); !~
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} s|IBX0^@
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publicvoid persist(finalObject entity){ B*/!s7 c.
getHibernateTemplate().save(entity); eKLvBa-{@
}
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publicvoid update(finalObject entity){ w_"d&eYdg0
getHibernateTemplate().update(entity); S1|5+PPs
} %oBP6|e
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publicvoid delete(finalObject entity){ Jm!,=}oP'
getHibernateTemplate().delete(entity); 'Agw~
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} ,#;hI{E
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publicObject load(finalClass entity, <F^9ML+'
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finalSerializable id){ l8~(bq1
return getHibernateTemplate().load X~IilGL8:
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(entity, id); -9vNV:c
} ?I]AE&4'
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publicObject get(finalClass entity, yjT>bu]
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finalSerializable id){ Cab-:2L]
return getHibernateTemplate().get n1%2sV)>
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(entity, id); 8SpG/gl"
} xVB
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publicList findAll(finalClass entity){ RB4n>&Y
return getHibernateTemplate().find("from OUWK
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} N3$1f$`
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publicList findByNamedQuery(finalString TG;[,oa
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namedQuery){ 0{vT`e'
return getHibernateTemplate j-d&4,a:c
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().findByNamedQuery(namedQuery); ^g4Gw6q6
} SY|K9$M^
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publicList findByNamedQuery(finalString query, *rTg>)
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finalObject parameter){
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return getHibernateTemplate cFc(HADM`r
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().findByNamedQuery(query, parameter); #OPEYJ;*9d
} mhVLlbY|t
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publicList findByNamedQuery(finalString query, Iuz_u2"C
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finalObject[] parameters){ d4ecF%R
return getHibernateTemplate W8 Ssv
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().findByNamedQuery(query, parameters); |kK5:\H
} T#Q7L~?zY
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publicList find(finalString query){ 6 eryf?
return getHibernateTemplate().find cW>=/
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(query); FBwG3x
} zHA::6OgPN
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publicList find(finalString query, finalObject .O"a: ^i
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parameter){ _^Q!cB'~/`
return getHibernateTemplate().find 2`*w*
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(query, parameter); nEu:& 4
} +Kb 7N, "
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public PaginationSupport findPageByCriteria Xgd-^
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(final DetachedCriteria detachedCriteria){ msgR"T3'
return findPageByCriteria B>c$AS\5y
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); peu9Bgs
} :0:Tl/))
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public PaginationSupport findPageByCriteria Hh Q0>
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(final DetachedCriteria detachedCriteria, finalint B?i#m^S
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