Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 y.KFz9Qv
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 fn6;
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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 wHGiN9A+
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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 Pfy2PpA
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分页支持类: !/1aot^(
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java代码: u`%Kh_
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package com.javaeye.common.util; 80i-)a\n
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import java.util.List; *$
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publicclass PaginationSupport { ^lF'KW$
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publicfinalstaticint PAGESIZE = 30; 'X()|{
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privateint pageSize = PAGESIZE; IK:F~I
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privateList items; s-\.j-Sa
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privateint totalCount; ZGstD2N$
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privateint[] indexes = newint[0]; %Tc P[<
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privateint startIndex = 0; r&^xg`i[z>
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public PaginationSupport(List items, int RmR-uQU-c
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totalCount){ 3LxhQVx2
setPageSize(PAGESIZE);
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setTotalCount(totalCount); Ts+S>$
setItems(items); 'p%\fb6`
setStartIndex(0); 7Wd}H Z
} k0%*{IVPN
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public PaginationSupport(List items, int h($XR+!#
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totalCount, int startIndex){ 17-D\
+}
setPageSize(PAGESIZE); C-vFl[@a0
setTotalCount(totalCount); vG`;2laY
setItems(items); /7s^OkQ
setStartIndex(startIndex); H$M#+EfL
} *.4VO+^
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public PaginationSupport(List items, int OGDCC/
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totalCount, int pageSize, int startIndex){ 5Op|="W.
setPageSize(pageSize); f!|$!r*q
setTotalCount(totalCount); 3Pj#k|(f[0
setItems(items); 7P&O{tl(
setStartIndex(startIndex); T#HW{3
} ]c67zyX=%
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publicList getItems(){ I}?+>cf
return items; 5_|Sm=
} Bl\/q83(
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publicvoid setItems(List items){ 676r0`
this.items = items; *B$$6'hi`
} 91|0{1
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publicint getPageSize(){ 'Gr}<B$A3
return pageSize; Q+Sx5JUR~
} X&s@S5=r]
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publicvoid setPageSize(int pageSize){ y4jJ&
this.pageSize = pageSize; RM5$O+"
} /h.hFM/
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publicint getTotalCount(){ g>@T5&1q*
return totalCount; z0yPBt1W
} l\Q--
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publicvoid setTotalCount(int totalCount){ vr:5+wew
if(totalCount > 0){ .B9i`)0
this.totalCount = totalCount; E`M, n,
int count = totalCount / Wu{cE;t
vs*Q {
pageSize; n7CwGN%
if(totalCount % pageSize > 0) lhp.zl
count++; ^V5VRGq
indexes = newint[count]; JemB[
for(int i = 0; i < count; i++){ Te\i;7;4u
indexes = pageSize * pGwBhZnb>
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} ./Y5Vk#Rp\
}else{ P+9%(S)L3
this.totalCount = 0; i]8 +JG6
} y3^>a5z!x
} acPX2B[jJ
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publicint[] getIndexes(){ r+yl{
return indexes; wjRv=[
} E1"H(m&6
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publicvoid setIndexes(int[] indexes){ l-~
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this.indexes = indexes; #9's^}i
} eeix-Wt*E
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publicint getStartIndex(){ 54^2=bp
return startIndex; OG!+p}yD]
} W%&[gDp
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publicvoid setStartIndex(int startIndex){ ?'jRUf l
if(totalCount <= 0) s)eU^4m
this.startIndex = 0; UtpK"U$XOU
elseif(startIndex >= totalCount) R9-Ps qmF
this.startIndex = indexes ]:K[{3iM
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[indexes.length - 1]; DJ]GM|?
elseif(startIndex < 0) 5N5Deb#V
this.startIndex = 0; #rps2nf.j
else{ v}>5!*
this.startIndex = indexes 0v"h/
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[startIndex / pageSize]; 5GHW~q!Zo\
} FN>ns,
} V 5
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publicint getNextIndex(){ ywCF{rRd
int nextIndex = getStartIndex() + LQr+)wI
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pageSize; xO` `X<
if(nextIndex >= totalCount) Iu=n$H
return getStartIndex(); FL8?<bU
else ]K^#'[
return nextIndex; IXJ6w:E
} 8s@k0T<O
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publicint getPreviousIndex(){ C5ia9LpRX
int previousIndex = getStartIndex() - :Qekv(z
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pageSize; ww^!|VVa
if(previousIndex < 0) &>KZ4%&?
return0; aR@s.
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else o;^k"bo6
return previousIndex; wq6.:8Or-]
}
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抽象业务类 ymr#OP$<S
java代码: Xb'UsQ
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/** aEJds}eE6)
* Created on 2005-7-12 >ow5aOlQ&
*/ K3xs=q]:@
package com.javaeye.common.business; 7G 3*@cl
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import java.io.Serializable; rO;Vr},3\%
import java.util.List; +j">Ju6Q;.
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import org.hibernate.Criteria; 08pG)_L
import org.hibernate.HibernateException; ?A\[EI^
import org.hibernate.Session; O.+02C_*
import org.hibernate.criterion.DetachedCriteria; 9U=~t%qW$
import org.hibernate.criterion.Projections; ?yq $
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import YS|Ve*t(L=
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org.springframework.orm.hibernate3.HibernateCallback; +bC=yR
import r'/H3
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org.springframework.orm.hibernate3.support.HibernateDaoS {r.yoI4e
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upport; "^3pP(8;~
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import com.javaeye.common.util.PaginationSupport; to%n2^^K
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public abstract class AbstractManager extends !JOM+P:
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HibernateDaoSupport { g~Hmka_fD1
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privateboolean cacheQueries = false; ]>%M%B
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privateString queryCacheRegion; _ +?v'#
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publicvoid setCacheQueries(boolean due'c!wW
`dpm{sn
cacheQueries){ <6(&w9WY
this.cacheQueries = cacheQueries; Co%EJb"tk
} 8G6[\P3fQ
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publicvoid setQueryCacheRegion(String }-8ZSWog6f
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queryCacheRegion){ {YoK63b$
this.queryCacheRegion = q=+AN</
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queryCacheRegion; ZY Ci&l
} W.O]f.h
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publicvoid save(finalObject entity){ *>%tx k:)
getHibernateTemplate().save(entity); O,+ZD^
} ?~_[/
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publicvoid persist(finalObject entity){ @$bEY#*C
getHibernateTemplate().save(entity); ,^#{k!uaC{
} 74u_YA<"
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publicvoid update(finalObject entity){ sBuOKT/j
getHibernateTemplate().update(entity); tXWhq
} $Z2Y% z6y
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publicvoid delete(finalObject entity){ ivb?B,Lz0
getHibernateTemplate().delete(entity); K>a+-QWK3
} {*jo,<4ee
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publicObject load(finalClass entity, },W<1*|
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finalSerializable id){ 4sCzUvI~Y1
return getHibernateTemplate().load 5?{ytNCY
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(entity, id); F CbU> 1R
} dQkp &.
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publicObject get(finalClass entity, {"x>ewAf
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finalSerializable id){ `YinhO:Z
return getHibernateTemplate().get [IgB78_$
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(entity, id); gq +|Hr
} S#9EBw7
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publicList findAll(finalClass entity){ !9/1_Bjv
return getHibernateTemplate().find("from ;*Z.|?3MM
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" + entity.getName()); jZ5 mpYUO
} K\2UwX
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