Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Sk+XBX(}
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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 ow9a^|@a
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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 ^wBlQmW7J
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分页支持类: $Okmurnn
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java代码: _2G _Io
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package com.javaeye.common.util; >D!R)W`
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import java.util.List; 'k\j[fk/K
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publicclass PaginationSupport { R&(OWF;~,
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publicfinalstaticint PAGESIZE = 30; $Ah
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privateint pageSize = PAGESIZE; Ll; v[Y
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privateList items; FCNYfjB%
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privateint totalCount; C lf;+G0
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privateint[] indexes = newint[0]; 7d>w]R,Z
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privateint startIndex = 0; @Nsn0-B?ne
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public PaginationSupport(List items, int k"cMAu.
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totalCount){ btEyvqs~X
setPageSize(PAGESIZE); D^O[_/i&
setTotalCount(totalCount); %"
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setItems(items); &2u
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setStartIndex(0); b
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} 2{=D)aC$f
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public PaginationSupport(List items, int xK_UkB-$i
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totalCount, int startIndex){ 9k71h`5
setPageSize(PAGESIZE); `{{6vb^g
setTotalCount(totalCount); UZs '[pm)
setItems(items); ;&J>a8B$
setStartIndex(startIndex); >xo<i8<Miv
} 1 jB0gNe
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public PaginationSupport(List items, int -(TC'
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totalCount, int pageSize, int startIndex){ El9T>!Z
setPageSize(pageSize); 5r
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setTotalCount(totalCount); 7I w^
setItems(items); #sCR}
setStartIndex(startIndex); ?P[:,0_
} q-Z<.GTq
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publicList getItems(){ Vc9Bg2f5
return items; ":+d7xR?o
} </_QldL_
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publicvoid setItems(List items){ j%`
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this.items = items; @uyQH c,V
} &q|vvF<G
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publicint getPageSize(){ 0-uj0"r`
return pageSize; aB~k8]q.
} m,+PYq
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publicvoid setPageSize(int pageSize){ 5(CInl
this.pageSize = pageSize; YG0/e#5
} F>{bVPh
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publicint getTotalCount(){ )wjpxr
return totalCount; i695P}J2
} Pq+|*Y<|&
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publicvoid setTotalCount(int totalCount){ =:g\I6'a
if(totalCount > 0){ =t_+ajY%
this.totalCount = totalCount; `m(ZX\W]
int count = totalCount / A 94:(z;{
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pageSize; cu}(\a
if(totalCount % pageSize > 0) UUWRC1EtI
count++; >b\|%=(x!*
indexes = newint[count]; v0)
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for(int i = 0; i < count; i++){ E!}'cxb^
indexes = pageSize * g0biw?
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} BDfMFH[1
}else{ X_X7fRC0
this.totalCount = 0; aoW2 c1`?Z
} yx?oxDJg
} :K~@JlJd
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publicint[] getIndexes(){ 1d49&-N
return indexes; QyTNV
} n5~Dxk
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publicvoid setIndexes(int[] indexes){ ,s%+vD$O^
this.indexes = indexes; RvA "ug.*
} 2d|^$$#`
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publicint getStartIndex(){ 2UYtEJ(?`{
return startIndex; `_LQs9J0J
} X n0HJ^"_
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publicvoid setStartIndex(int startIndex){ Iw[zN[oz
if(totalCount <= 0) 9-j-nx
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this.startIndex = 0; 0aR.ct%
elseif(startIndex >= totalCount) .6[8$8c
this.startIndex = indexes .sit5BX
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[indexes.length - 1]; t5l<Lm)
elseif(startIndex < 0) DHn\ =M
this.startIndex = 0; w ;$elXP|
else{ + rB3\R"d
this.startIndex = indexes ]2"UR_x
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[startIndex / pageSize]; B_Gcz5
} fGj66rMGw
} Rh~j -;
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publicint getNextIndex(){ _0naqa!JyH
int nextIndex = getStartIndex() + aC9iNm8w
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pageSize; 'Sd+CXS
if(nextIndex >= totalCount) }duqX R
return getStartIndex(); arKf9`9
else ^`xS|Sq1D
return nextIndex; ]D@aMC$#
} 9BOn8p;yz
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publicint getPreviousIndex(){ (@T{ [\
int previousIndex = getStartIndex() - D{8B;+
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pageSize; G1X73qoHT<
if(previousIndex < 0) #r>)A
return0; s!gVY!0
else F_@`
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return previousIndex; %eHr^j~w$
} LmsPS.It
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} }<2|6 {
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抽象业务类 R^@`]dX$
java代码: &> .QDO
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/** Y -BZV |
* Created on 2005-7-12 K vPLA{
*/ [G+@[9hn%
package com.javaeye.common.business; 0ZL>-
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import java.io.Serializable; OPq6)(Q
import java.util.List; F-~Xbz%
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import org.hibernate.Criteria; 5B1,,8P
import org.hibernate.HibernateException; p8s%bPjK
import org.hibernate.Session; "j&p3
import org.hibernate.criterion.DetachedCriteria; =RWY0| f
import org.hibernate.criterion.Projections; M?gZKdj
import $y<`Jy]+)~
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org.springframework.orm.hibernate3.HibernateCallback; 6>)KiigZ\
import _Co
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org.springframework.orm.hibernate3.support.HibernateDaoS Ak`?,*LM
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upport; TFbF^Kd#:d
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import com.javaeye.common.util.PaginationSupport; 7|J&fc5BP
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public abstract class AbstractManager extends a(JtGjTf&
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HibernateDaoSupport { CpgaQG^
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privateboolean cacheQueries = false; 2gvS`+<TP
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privateString queryCacheRegion; )OlYz!#?
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publicvoid setCacheQueries(boolean (a,`Y.
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cacheQueries){ +tlbO?
this.cacheQueries = cacheQueries; nu|?F\o!
} >NpW$P{'
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publicvoid setQueryCacheRegion(String 8,CL>*A
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queryCacheRegion){ &t@ $]m(
this.queryCacheRegion = eEmLl(Lb
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queryCacheRegion; !P6y_Frpe
} ri9n.-xs
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publicvoid save(finalObject entity){ at3YL[,[Z
getHibernateTemplate().save(entity); #TP Y%
} I= z+`o8
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publicvoid persist(finalObject entity){ ,.gI'YPQC
getHibernateTemplate().save(entity); 4x/u$Ixzh=
} +hT9V1'-D
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publicvoid update(finalObject entity){ >R/^[([;]
getHibernateTemplate().update(entity); r^\Wo7q
} \>eFs} Y/
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publicvoid delete(finalObject entity){ .B$3y#TOb
getHibernateTemplate().delete(entity); HOPsp
} =4x-x nA
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publicObject load(finalClass entity, =0U"07%}
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finalSerializable id){ jm|zn
return getHibernateTemplate().load Rn whkb&&
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(entity, id); ~-(X\:z}
} ;Y &2G'
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publicObject get(finalClass entity, _..5G7%#%
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finalSerializable id){ k.F(*kh
return getHibernateTemplate().get IZ_ B $mo
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(entity, id); 1`n
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} VqB9^qJ]!
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publicList findAll(finalClass entity){ iB'g7&,L
return getHibernateTemplate().find("from O{G $]FtF
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" + entity.getName()); [
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} %{P." ki
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publicList findByNamedQuery(finalString OoAZ t
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namedQuery){ ![_GA)7
return getHibernateTemplate jM(!!AjpC
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().findByNamedQuery(namedQuery); 'nqVcNgb
} "}UYsXg
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publicList findByNamedQuery(finalString query, tgm(tDL
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finalObject parameter){ f]^ @z<FC
return getHibernateTemplate {S5D~A*a+
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().findByNamedQuery(query, parameter); O /4)aW3B
} o&:n>:im
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publicList findByNamedQuery(finalString query, qv+}|+aL:
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finalObject[] parameters){ a<V* )
return getHibernateTemplate V -9z{
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().findByNamedQuery(query, parameters); : ]JsUb{YK
} \"@ `Rf
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publicList find(finalString query){ K,GX5c5
return getHibernateTemplate().find evGUSol?:n
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(query); _^0)T@
} }\\6"90g*
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publicList find(finalString query, finalObject zzBq b\Ky
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parameter){ ^-7{{/
return getHibernateTemplate().find Y~bGgd]T
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(query, parameter); ('pxX+
} pDx}~IB
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public PaginationSupport findPageByCriteria p}swJ;S
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(final DetachedCriteria detachedCriteria){ jk}m
return findPageByCriteria #8jH_bi
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); }GTy{Y*&
} 3/hAxd
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public PaginationSupport findPageByCriteria :WnXoL
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(final DetachedCriteria detachedCriteria, finalint Y:="vWWG
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startIndex){ D+
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return findPageByCriteria { e%
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(detachedCriteria, PaginationSupport.PAGESIZE, Uyyw'Ni
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startIndex); Wh>Y_ k
} .el_pg
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public PaginationSupport findPageByCriteria dfq5P!'
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(final DetachedCriteria detachedCriteria, finalint rzqUI*4%
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pageSize, Kn9,N@bU_
finalint startIndex){ DEC,oX!bI1
return(PaginationSupport) <cz~q=%v2&
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getHibernateTemplate().execute(new HibernateCallback(){ P5P<-T{-c
publicObject doInHibernate [@/[#p
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(Session session)throws HibernateException { K~WwV8c9;
Criteria criteria = |E]YP~h
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detachedCriteria.getExecutableCriteria(session); | T"{q
int totalCount = m%E7V{t
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((Integer) criteria.setProjection(Projections.rowCount yK&)H+v
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()).uniqueResult()).intValue(); Ck.GN<#-^P
criteria.setProjection lv ^=g
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(null); Rb~Kyy$
List items = oci-[CI,
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criteria.setFirstResult(startIndex).setMaxResults M=N`&m