Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 S=g E'"LT
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 *m:'~\[u
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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 m4RiF
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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 `f\+aD'u
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分页支持类: -E-e!
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java代码: ;6{{hc4
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package com.javaeye.common.util; $im6v
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import java.util.List; Z2&7HTz
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publicclass PaginationSupport { |!uC [=
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publicfinalstaticint PAGESIZE = 30; K<?[^\
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privateint pageSize = PAGESIZE; 7x)32f"
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privateList items; $fQ'q3
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privateint totalCount; pzcof#2
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privateint[] indexes = newint[0]; A4f;ftB
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privateint startIndex = 0; lcuqzX{7
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public PaginationSupport(List items, int ?/^{sW'
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totalCount){ Jek3K&
setPageSize(PAGESIZE); 15"[MX A
setTotalCount(totalCount); /[UuHU5*R
setItems(items); JJu}Ed_
setStartIndex(0); (zIF2qY
} ]QmY`pTB`
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public PaginationSupport(List items, int 0l~z0pvT
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totalCount, int startIndex){ ;Wig${
setPageSize(PAGESIZE); 2GJp`2(%dA
setTotalCount(totalCount); AqjEz+TVt
setItems(items); y.?Q
setStartIndex(startIndex); ANXN.V
}
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public PaginationSupport(List items, int d?>pcT)G_
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totalCount, int pageSize, int startIndex){ qaEWK0
setPageSize(pageSize); )/uCdSDIc
setTotalCount(totalCount); 2[5z6oG
setItems(items); a'B 5m]%
setStartIndex(startIndex); ./Wi(p{F
} <*5` TE0J
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publicList getItems(){ mM-7
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return items; R1C2d +L
} Zksow} %
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publicvoid setItems(List items){ bXK$H=S Bz
this.items = items; *sq+ Vc(
} UszR. Z
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publicint getPageSize(){
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return pageSize; +*KDtqZjk
} x*0mmlCb
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publicvoid setPageSize(int pageSize){ +V/m V7FK
this.pageSize = pageSize; lv\^@9r
} ]M/*Beh
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publicint getTotalCount(){ =pn(56
return totalCount; q=_tjg
} {y==8fCJ
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publicvoid setTotalCount(int totalCount){ @-Ln* 3n
if(totalCount > 0){ <PXnR\
this.totalCount = totalCount; JU RJN+)z
int count = totalCount / xZp`Ke!
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pageSize; o]m56
if(totalCount % pageSize > 0)
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count++; F+::UWKA
indexes = newint[count]; E/uKzzD9
for(int i = 0; i < count; i++){ aXyg`CDv
indexes = pageSize * 5'"l0EuD
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} i T&Y9
}else{ P>;u S
this.totalCount = 0; 4dUr8]BkG
} J5*( PxDF
} Xsv^GmP+
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publicint[] getIndexes(){ t7b\ #o
return indexes; aOTrng
} $Qq5Fx9kU
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publicvoid setIndexes(int[] indexes){ ]6TX)1
this.indexes = indexes; J)a^3>
} /_CSRi&
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publicint getStartIndex(){ h|Udw3N1L
return startIndex; &Un^
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} .GNl31f0
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publicvoid setStartIndex(int startIndex){ rc)vVv
if(totalCount <= 0) J-+p]xG
this.startIndex = 0; :gacP?
elseif(startIndex >= totalCount) /2AeJH\-
this.startIndex = indexes Q>[GD(8k
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[indexes.length - 1]; ">NPp\t>/Z
elseif(startIndex < 0) 8i'EO6
this.startIndex = 0; TrC :CL
else{ 7T-}oNaJA\
this.startIndex = indexes Wf!<Qot|R#
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[startIndex / pageSize]; _!C'oG6s?
} I85bzzZB
} R.B3
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publicint getNextIndex(){ M8iI e:{ c
int nextIndex = getStartIndex() + Aq"<#:
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pageSize; a gM I$
if(nextIndex >= totalCount) ;,F:.<P
return getStartIndex(); CXfPC[o
else 3QO*1P@q
return nextIndex; ql
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} f+j-M|A
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publicint getPreviousIndex(){ ~q05xy8
int previousIndex = getStartIndex() - R=u!RcvR
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pageSize; C'Z6l^{>
if(previousIndex < 0) X6lUFko
return0; 0R[onPU_vZ
else E]IPag8C
return previousIndex; CPS1b
} J|GEt@o3
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} sQ8_j
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抽象业务类 lL{1wCsl
java代码: 5fVm392+
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/** _|%l) KO
* Created on 2005-7-12 " .:b43Z
*/ `SGI
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package com.javaeye.common.business; *{e?%!Q
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import java.io.Serializable; Q( \2(x\
import java.util.List; /~B\1
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import org.hibernate.Criteria; lf%Ju$H
import org.hibernate.HibernateException; 4ZN&Yf`
import org.hibernate.Session; bEc @"^)
import org.hibernate.criterion.DetachedCriteria; r%DaBx!x8
import org.hibernate.criterion.Projections; jVhfpS[
import =ijVT_|u0
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org.springframework.orm.hibernate3.HibernateCallback;
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import )zoO#tX
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org.springframework.orm.hibernate3.support.HibernateDaoS 5EqC.g.
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upport; v<wR`7xG
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import com.javaeye.common.util.PaginationSupport; iYHCa }
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public abstract class AbstractManager extends ;^`WX}]C(
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HibernateDaoSupport { z'+k]N9Q^
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privateboolean cacheQueries = false; Kc[Y .CH
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privateString queryCacheRegion; _YM]U`*
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publicvoid setCacheQueries(boolean Sx^4Y\\
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cacheQueries){ -w#Hy>E
this.cacheQueries = cacheQueries; ?c!W*`yP
} auKGm:
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publicvoid setQueryCacheRegion(String CF?TW
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queryCacheRegion){ uY~xHV_-
this.queryCacheRegion = IR<`OA
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queryCacheRegion; F;,LY:s|Z
} nB+ e2e&
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publicvoid save(finalObject entity){ qIIl,!&}A
getHibernateTemplate().save(entity); +@c-:\K%
} DoYzTSWx
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publicvoid persist(finalObject entity){ >
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getHibernateTemplate().save(entity); 6%&RDrn
} U;Ne"Jh
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publicvoid update(finalObject entity){ Q|`sYm'.
getHibernateTemplate().update(entity); }1/`<m
} ,9:0T LLR
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publicvoid delete(finalObject entity){ PN&;3z Z
getHibernateTemplate().delete(entity); jdF~0#vH
} (GNY::3
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publicObject load(finalClass entity, WO=,NQOw
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finalSerializable id){ Vg+jF!\7
return getHibernateTemplate().load iKu~o.yy
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(entity, id); [x.DwU%S
} iA[WDB\|0
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publicObject get(finalClass entity, o/U"'FP
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finalSerializable id){ <&$:$_ah
return getHibernateTemplate().get mq(*4KFWJ2
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(entity, id); pzPm(M1^X
} l"-F<^
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publicList findAll(finalClass entity){ :$#";t|
return getHibernateTemplate().find("from zU7/P|Dw+
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" + entity.getName()); 07?| "c.
} /4f4H?A -
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publicList findByNamedQuery(finalString \D]H>i$
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namedQuery){ 8@f=GJf
return getHibernateTemplate gZ^NdDBO
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().findByNamedQuery(namedQuery); d&'}~C`~k
} !VfP#B6.
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publicList findByNamedQuery(finalString query, O\(0{qu
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finalObject parameter){ ?oc#$fcQ~
return getHibernateTemplate t*&O*T+fgy
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().findByNamedQuery(query, parameter); ua^gG3n0
} q
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publicList findByNamedQuery(finalString query, 5ecAev^1-
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finalObject[] parameters){ Z3)l5JG)
return getHibernateTemplate ezC2E/#
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().findByNamedQuery(query, parameters); F^v <z)x
} Zu$30&U
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publicList find(finalString query){ @\=%M^bx
return getHibernateTemplate().find HZ#<+~J
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(query); 8u401ddg
} l9%oKJ;
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publicList find(finalString query, finalObject ^_cR
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parameter){ Q+O3Wgjy
return getHibernateTemplate().find !H5r+%Oo|
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(query, parameter); j>5D4}*]f
} %Tn0r|K
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public PaginationSupport findPageByCriteria )T=cd
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(final DetachedCriteria detachedCriteria){ Ier0F7]I
return findPageByCriteria !i|]OnJY
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 5F8sigr/h
} qx1}e
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public PaginationSupport findPageByCriteria 8?L7h\)-
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(final DetachedCriteria detachedCriteria, finalint N*C"+2
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startIndex){ PuuO2TZ
return findPageByCriteria Z.Sq5\d
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(detachedCriteria, PaginationSupport.PAGESIZE, H'L~8>
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startIndex); r&G=}ZMO
} +=5Dt7/|
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public PaginationSupport findPageByCriteria K#B)@W?9
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(final DetachedCriteria detachedCriteria, finalint A&$oiLc
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pageSize, :\+;5Se+l
finalint startIndex){ Tn~b#-0
return(PaginationSupport) 8h&Ed=gi
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getHibernateTemplate().execute(new HibernateCallback(){ ;t.LLd
publicObject doInHibernate _$+lyea
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(Session session)throws HibernateException { FM c9oyU~
Criteria criteria = 50:$km\
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detachedCriteria.getExecutableCriteria(session); a!1\,.
int totalCount = kp~@Ub
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((Integer) criteria.setProjection(Projections.rowCount Z;^UY\&X
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()).uniqueResult()).intValue(); >g+ogwZ
criteria.setProjection 9tW=9<E
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(null); y%X{[F
List items = ?(cbZ#( o
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criteria.setFirstResult(startIndex).setMaxResults k+au42:r
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(pageSize).list(); Zhl}X!:c?\
PaginationSupport ps = \\F@_nB,b
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new PaginationSupport(items, totalCount, pageSize, MY zyg
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startIndex); ,8KD-" l^g
return ps; 0L
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} PKoB~wLH
}, true); zCdQI
} x"@Y[
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public List findAllByCriteria(final s2*^ PG
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DetachedCriteria detachedCriteria){ oC]|ARgQk|
return(List) getHibernateTemplate GW_@hYIqD
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().execute(new HibernateCallback(){ -q9`Btz
publicObject doInHibernate `ySmzp
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(Session session)throws HibernateException { "y_A xOH
Criteria criteria = &;~x{q]3
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detachedCriteria.getExecutableCriteria(session); C3Mr)
return criteria.list(); 5B[kZ?>
} $z-zscco
}, true); *5DOTWos
} f)xHSF"
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public int getCountByCriteria(final <$WRc\}&g