Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 <z>oY2%
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 w~Vqg:'\$
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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 %&q}5Y4!
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分页支持类: }d;6.~Gw
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java代码: NSH4 @x
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package com.javaeye.common.util; j-DWz>x
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import java.util.List; 9\/oL{
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publicclass PaginationSupport { siT`O
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publicfinalstaticint PAGESIZE = 30; 5sN6&'[
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privateint pageSize = PAGESIZE; fFWi
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privateList items; _{gqi$Mi
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privateint totalCount; Pz\K3-
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privateint[] indexes = newint[0]; m8e()8lZ3
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privateint startIndex = 0; kfT*G
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public PaginationSupport(List items, int n|XheG7:
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totalCount){ pRL:,q\
setPageSize(PAGESIZE); |D%mWQng
setTotalCount(totalCount); di0@E<@1:
setItems(items); ( N};.DB1Y
setStartIndex(0); Y0A(-"
} 79exZ7|
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public PaginationSupport(List items, int #jW=K&;
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totalCount, int startIndex){ 2A[hMbL
setPageSize(PAGESIZE); 0<NS1y
setTotalCount(totalCount); &b}g.)RI
setItems(items); #
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setStartIndex(startIndex); ,w H~.LHi
} >7%T%2N
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public PaginationSupport(List items, int =CZRX'
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totalCount, int pageSize, int startIndex){ =\5WYC
setPageSize(pageSize); Z?!AJY
setTotalCount(totalCount); ,_Bn{T=U
setItems(items); 1BZ##xV*:G
setStartIndex(startIndex); iaeNY;T
} ~uty<fP
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publicList getItems(){ HbsNF~;
return items; Opc szq5n
} TnK<Wba
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publicvoid setItems(List items){ >19s:+
this.items = items; \\#D!q*
} 5P"R'/[PA_
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publicint getPageSize(){ o
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return pageSize; iBSg`"S^]C
} ]h(Iun
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publicvoid setPageSize(int pageSize){ }RI_k&;
this.pageSize = pageSize; 8Sj<,+XFq
} wGKxT
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publicint getTotalCount(){ k1f<(@*`
return totalCount; AG=PbY9
} ]B=*p0~j^n
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publicvoid setTotalCount(int totalCount){ aH'fAX0bF
if(totalCount > 0){ S3Gr}N
this.totalCount = totalCount; vu\W5M
int count = totalCount / ocZ}RI#Q
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pageSize; m[v0mXE
if(totalCount % pageSize > 0) W6NhJ#M7
count++; if|5v^/
indexes = newint[count]; N wk
for(int i = 0; i < count; i++){ Ia}qDGqPp!
indexes = pageSize * Xpg-rxX
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} Yp;Z+!!UZ
}else{ <1*.:CL"s
this.totalCount = 0; QjY}$
} EtN,
} 63=&??4
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publicint[] getIndexes(){ >:6iFPP
return indexes; t;w<n"
} #RR;?`,L}
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publicvoid setIndexes(int[] indexes){ =M;F&;\8
this.indexes = indexes; Tty'ysH
} XYWyxx5`
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publicint getStartIndex(){ giNXXjl
return startIndex; O^8ZnN_+
} {TNORbZz
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publicvoid setStartIndex(int startIndex){ iRsB|7v[ ,
if(totalCount <= 0) I~n4}}9M
this.startIndex = 0; 7@<.~*Bl6
elseif(startIndex >= totalCount) G]rY1f0
this.startIndex = indexes (2H
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[indexes.length - 1]; >va_,Y}
elseif(startIndex < 0) =fRS UtX
this.startIndex = 0; aJ(/r.1G
else{ Y`j$7!j
this.startIndex = indexes L'{W|Xb+
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[startIndex / pageSize]; (7G4 v
} s oY\6mHio
} '/8/M{`s
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publicint getNextIndex(){ b:F;6X0~Hl
int nextIndex = getStartIndex() + PEvY3F}_rh
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pageSize; f5 bq)Pm&
if(nextIndex >= totalCount) vmAnBY
return getStartIndex(); B=d<L^
else I+kAy;2
return nextIndex; S~aWun
} K-k!':K:
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publicint getPreviousIndex(){ ulsU~WW7r
int previousIndex = getStartIndex() - 8<Iq)A]'Z
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pageSize; I9qZE=i
if(previousIndex < 0) _rYW|*cIF
return0; h-ii-c?R@0
else r!Dk_|Cd
return previousIndex; Hdew5Xn(:
} 4aOz=/x2
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} 5]dlD #
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抽象业务类 nvrh7l9nX
java代码: ^.LB(GZ,
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/** :
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* Created on 2005-7-12 &q<k0_5Q
*/ Nksm&{=6S
package com.javaeye.common.business; ]6Iu\,#J
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import java.io.Serializable; hb;CpA
import java.util.List; myfTztJ
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import org.hibernate.Criteria; (y]Z *p:EW
import org.hibernate.HibernateException; L@H^?1*L?
import org.hibernate.Session; U_IGL
import org.hibernate.criterion.DetachedCriteria; o.!o4&WH
import org.hibernate.criterion.Projections; fPD.np}
import ?P+Uv
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org.springframework.orm.hibernate3.HibernateCallback; L/jaUt[,
import ExtC\(X;
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org.springframework.orm.hibernate3.support.HibernateDaoS Fqw4XR_`~
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upport; #[jS&rr(
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import com.javaeye.common.util.PaginationSupport; PI*@.kqR-
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public abstract class AbstractManager extends phH@{mI
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HibernateDaoSupport {
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privateboolean cacheQueries = false; q~9-A+n
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privateString queryCacheRegion; [voZ=+/
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publicvoid setCacheQueries(boolean +ytP5K7
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cacheQueries){ Y!xPmL^]?
this.cacheQueries = cacheQueries; ~b]enG5xS4
} >gp53\
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publicvoid setQueryCacheRegion(String wIi(\]Q
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queryCacheRegion){ s\ C ,5
this.queryCacheRegion = 9jI muSZ
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queryCacheRegion;
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} ~!Sd|e:4
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publicvoid save(finalObject entity){ *>W<n1r@]
getHibernateTemplate().save(entity); 7T[$BrO\
} nPvys~D
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publicvoid persist(finalObject entity){ 8D)1ZUx7`
getHibernateTemplate().save(entity); 2Jt{oh |
} ;l!<A
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publicvoid update(finalObject entity){ i_N8)Z;r
getHibernateTemplate().update(entity); HFP'b=?`]|
} AI3x,rk#
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publicvoid delete(finalObject entity){ ZS+m}.,whQ
getHibernateTemplate().delete(entity); 8i[TeW"
} Kuh3.1#o
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publicObject load(finalClass entity, $!wU[/k
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finalSerializable id){ 2z
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return getHibernateTemplate().load L~PiDQr?r
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(entity, id); QP\:wi
} #$W5)6ch
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publicObject get(finalClass entity, ?rOj?J9
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finalSerializable id){ n`Z}tQ%)o
return getHibernateTemplate().get (!fx5&F
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(entity, id); b|AjB: G
} wzy[sB274
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publicList findAll(finalClass entity){ +#wVe
return getHibernateTemplate().find("from ?n{m2.H
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" + entity.getName()); k5K5OpY
} $H+X'1
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publicList findByNamedQuery(finalString ng+sK
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namedQuery){ .b_ppieNY
return getHibernateTemplate y2+f)Xp_.C
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().findByNamedQuery(namedQuery); 0B8Wf/j?M
} BTwc(oL
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publicList findByNamedQuery(finalString query, KgM|:'
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finalObject parameter){ T+T)~!{%
return getHibernateTemplate F1BvDplQ>G
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().findByNamedQuery(query, parameter); >QYx9`x&
} VfzyBjQ
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publicList findByNamedQuery(finalString query, $s=` {v v
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finalObject[] parameters){ `\(co;:
return getHibernateTemplate 4~1b
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().findByNamedQuery(query, parameters); 9~=zD9,|iA
} %0y-f
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publicList find(finalString query){ 07>m*1G
return getHibernateTemplate().find iC
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(query); L
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} 9j^rFG!n
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publicList find(finalString query, finalObject <EqS
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parameter){ )6%*=-
return getHibernateTemplate().find G?v<-=I
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(query, parameter); LodP,\T
} e%pohHI
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public PaginationSupport findPageByCriteria G0h&0e{w
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(final DetachedCriteria detachedCriteria){ $yU}56(z~
return findPageByCriteria &;?+ ^L>
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); %`pi*/(
} ^!
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public PaginationSupport findPageByCriteria ?`Z:vqp>Z
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(final DetachedCriteria detachedCriteria, finalint 0=
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startIndex){ 6@lZVM)E
return findPageByCriteria VTR4uT-
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(detachedCriteria, PaginationSupport.PAGESIZE, au19Q*r9
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startIndex); c/.s`hz
} .= ~2"P
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public PaginationSupport findPageByCriteria /Bgqf,N |
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