Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 7'S/hV%
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 >&TSz5Q
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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 A^q= :ofQ
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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 @ \J R xJ
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分页支持类: M$ep.<Z1|
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java代码: )&1yt4
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package com.javaeye.common.util; QtJe){(z+
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import java.util.List; b5Rjn1@
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publicclass PaginationSupport { c=I!?a"
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publicfinalstaticint PAGESIZE = 30; 5
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privateint pageSize = PAGESIZE; Bjml%
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privateList items; 6R%c+ok8i
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privateint totalCount; -?e~dLu
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privateint[] indexes = newint[0]; Vm'ReH
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privateint startIndex = 0; |o~FKy1'z\
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public PaginationSupport(List items, int $Bz |[=
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totalCount){ SjKIn-
setPageSize(PAGESIZE); bVtboHlY
setTotalCount(totalCount); \9Itu(<f
setItems(items); 5U|f"3&8
setStartIndex(0); dS0G+3J&+E
} $Pzvv`f*
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public PaginationSupport(List items, int fTY @{t
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totalCount, int startIndex){ TmKO/N@}
setPageSize(PAGESIZE); x?:WR*5w
setTotalCount(totalCount); \b.2f+;3
setItems(items); @MtF^y
setStartIndex(startIndex); `C=!8q
} s[nOB0
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public PaginationSupport(List items, int VOG DD@
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totalCount, int pageSize, int startIndex){ (oq(-Wv
setPageSize(pageSize); CEYHD ?9k8
setTotalCount(totalCount); L$ ]D&f8:
setItems(items); bT[Q:#GL
setStartIndex(startIndex);
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} Cd7jG
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publicList getItems(){ 3(^9K2.s}
return items; XZd !c Ff
} p]!,BoZL
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publicvoid setItems(List items){ Lrq+0dI 65
this.items = items; L}>9@?;GW
} {nryAXK
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publicint getPageSize(){ L4Nk+R;
return pageSize; +R2
} deHBY4@
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publicvoid setPageSize(int pageSize){ &\0LR?Nh
this.pageSize = pageSize; J4`08,
} hJFQ/(
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publicint getTotalCount(){ uAVV4)
return totalCount; M/UJb1<
} %*|XN*i XC
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publicvoid setTotalCount(int totalCount){ Oo7n_h1
if(totalCount > 0){ D3XQ>T [*q
this.totalCount = totalCount; kdxs{b"t
int count = totalCount / ),M8W15
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pageSize; #7Qn\C2
if(totalCount % pageSize > 0) tp 5]n`3rD
count++; F<'g6f
indexes = newint[count]; L?al2aopF
for(int i = 0; i < count; i++){
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indexes = pageSize * ShCAkaj_
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} s?0r\ cc|:
}else{ I9Z8]Q+2"
this.totalCount = 0; 3l4k2
} UKX'A)$
} y99G 3t
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publicint[] getIndexes(){ q/4PX
return indexes; m1+DeXR_g
} o
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publicvoid setIndexes(int[] indexes){ #lJF$
this.indexes = indexes; YciZU
} {?5EOp~
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publicint getStartIndex(){ ENqJ9%sk7
return startIndex; xhimRi
} $]Fe9E?
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publicvoid setStartIndex(int startIndex){ -sc@SoS
if(totalCount <= 0) [k1N `K(M
this.startIndex = 0; R \`,Q'3
elseif(startIndex >= totalCount) VK$+Nm)
this.startIndex = indexes *d,SI[c%e
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[indexes.length - 1]; Mb$&~!
elseif(startIndex < 0) 0|4XV{\qT$
this.startIndex = 0; 6'qs=Ql
else{ :T'"%_d5
this.startIndex = indexes 6J&L5E
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[startIndex / pageSize]; yYF80mnJz
} :L\@+}{(c
} Dk[[f<H_{
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publicint getNextIndex(){ qU=$ 0M
int nextIndex = getStartIndex() + y;Dw%m
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pageSize; N$_Rzh"9rr
if(nextIndex >= totalCount) Pb[wysy
return getStartIndex(); $=H\#e)]Ug
else ^Z}INUv]7
return nextIndex; 8[zP2L!-
} *K0CUir|
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publicint getPreviousIndex(){ T.&^1q WWA
int previousIndex = getStartIndex() - b`%/*
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pageSize; iyj&O"
if(previousIndex < 0) NFc<%#H
return0;
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else e
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return previousIndex; FtY*I&
} yNI}=Z
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} "-^TA_XfI
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抽象业务类 H\)on"
java代码: \.Q"fd?a_D
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/** &HW%0lTs%
* Created on 2005-7-12 ~fQ#-ekzqk
*/ P3@[x
package com.javaeye.common.business; }4ta#T Ea
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import java.io.Serializable; %.[GR
import java.util.List; [}d
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import org.hibernate.Criteria; SOeL@!_
import org.hibernate.HibernateException; ,R*ru*
import org.hibernate.Session; c+-L>dsss
import org.hibernate.criterion.DetachedCriteria; 0UlaB
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import org.hibernate.criterion.Projections; .$S`J2Y
import ^9"|tWf6O
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org.springframework.orm.hibernate3.HibernateCallback; Fc42TH
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import lusINILc
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org.springframework.orm.hibernate3.support.HibernateDaoS 3P'.)=}
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upport; E
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import com.javaeye.common.util.PaginationSupport; uVOOw&q_
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public abstract class AbstractManager extends RR^I*kRH
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HibernateDaoSupport { Q_LPLmM
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privateboolean cacheQueries = false; n5oB#>tI0
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privateString queryCacheRegion; u[PO'6Kzd
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publicvoid setCacheQueries(boolean In=3#u
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cacheQueries){ ,GZ(>|
this.cacheQueries = cacheQueries; r'pFHX
} HIi"zo=V
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publicvoid setQueryCacheRegion(String kB"Sh_:m
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queryCacheRegion){ u.8vXc
this.queryCacheRegion = #y}@FG
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queryCacheRegion; ^/mQo`[G
} 9?bfZF4A=
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publicvoid save(finalObject entity){ Yca9G?^\v
getHibernateTemplate().save(entity); n4(w?,w}
} 3 +BPqhzf
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publicvoid persist(finalObject entity){ mkrvWZjZX
getHibernateTemplate().save(entity); <w.V !"!
} hFj.d]S
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publicvoid update(finalObject entity){ [WX+/pm7>
getHibernateTemplate().update(entity); VXR.2C
} aW4 tJN%!
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publicvoid delete(finalObject entity){ xgsD<3
getHibernateTemplate().delete(entity); .l !:|Fd
} qPH]DabpI
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publicObject load(finalClass entity, -H'_%~OV(
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finalSerializable id){ ~e,
return getHibernateTemplate().load Q3wD6!'&m
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(entity, id); .;iXe
} %jKR\f G
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publicObject get(finalClass entity, 9SC#N5V
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finalSerializable id){ =lr*zeHLC
return getHibernateTemplate().get
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(entity, id); Wy)|-Q7
} NTs< ;ED
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publicList findAll(finalClass entity){ g^}X3NUn
return getHibernateTemplate().find("from H6bomp"
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" + entity.getName()); &"Ua"H)
} ^dYFFKQ
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publicList findByNamedQuery(finalString IOvYvFUUJ
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namedQuery){ Q%o
return getHibernateTemplate W(~G^Xu
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().findByNamedQuery(namedQuery); >F Z6\
} /uW6P3M
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publicList findByNamedQuery(finalString query, <LzN/I aJ
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finalObject parameter){ uhQ3
return getHibernateTemplate Xb)XV$0
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().findByNamedQuery(query, parameter);
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} s/`4]B;2U
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publicList findByNamedQuery(finalString query, tG^Oj:
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finalObject[] parameters){ %D gU
return getHibernateTemplate W{=>c/
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().findByNamedQuery(query, parameters); csH1X/3ha\
} {LR?#.
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publicList find(finalString query){ rZ w&[ G
return getHibernateTemplate().find 31Zl"-<#-
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(query); TcO@q ]+S
} >6r&VZu*n
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publicList find(finalString query, finalObject '#u|RsZ
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parameter){ [AE]0cO@
return getHibernateTemplate().find S>*i^If
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(query, parameter); <y-KWWE
} ]*[S#Jk
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public PaginationSupport findPageByCriteria ,)S|%tDW
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(final DetachedCriteria detachedCriteria){ D-E30b]e
return findPageByCriteria s-o0N{b?#'
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); )Qp?N<&'
} VAsaJ`vcb
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public PaginationSupport findPageByCriteria /3'-+bp^=
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(final DetachedCriteria detachedCriteria, finalint ^|>vK,q$I
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startIndex){
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return findPageByCriteria 7=Ew[MOmM
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(detachedCriteria, PaginationSupport.PAGESIZE, Ol{)U;,`
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startIndex); 8iqx*8}
} xo7H^!_
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public PaginationSupport findPageByCriteria >9uDY+70I3
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(final DetachedCriteria detachedCriteria, finalint bn~=d@'
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pageSize, &>*fJ
finalint startIndex){ &]16Hb~
return(PaginationSupport) @Zjy"u
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getHibernateTemplate().execute(new HibernateCallback(){ ~BD VmQa
publicObject doInHibernate lRZt))3
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(Session session)throws HibernateException { aq oT
Criteria criteria = 7t0\}e
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detachedCriteria.getExecutableCriteria(session); hg]\~#&-
int totalCount = 1Xu\Tm\Ux
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((Integer) criteria.setProjection(Projections.rowCount 5m=3{lBi
CsQ}eW8uEf
()).uniqueResult()).intValue(); a4 O
criteria.setProjection r2M._}bF
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(null); b U-Cd
List items = Tm.(gK
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criteria.setFirstResult(startIndex).setMaxResults *jCXH<?R
])7t!<
(pageSize).list(); Hhx<k{B@7
PaginationSupport ps = Y"K7$+5#\
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new PaginationSupport(items, totalCount, pageSize, rPv+eM">
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startIndex); o/CSIvz1
return ps; Y6?d
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} J&@[=zBYw
}, true); 7M<7^)9
} 38>8{Ma
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public List findAllByCriteria(final Io|NL6[
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DetachedCriteria detachedCriteria){ Hd
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return(List) getHibernateTemplate ujXC#r&
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().execute(new HibernateCallback(){ (fUXJ$
publicObject doInHibernate j;=+5PY
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(Session session)throws HibernateException { r\F`xtR(
Criteria criteria = 0mF3Vs`-Q
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detachedCriteria.getExecutableCriteria(session); _Su?
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return criteria.list(); 4hg#7#?boW
} isLIfE>
}, true); -|~6Zf"
} xm6=l".%z
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