Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 yo@S.7[/
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Ln
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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 i>}aQ:&^0
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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 %}0B7_6B+@
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分页支持类: Ccx1#^`
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java代码: eg$y,Tx
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package com.javaeye.common.util; k;W`6:Kjp
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import java.util.List; l6O8:XI
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publicclass PaginationSupport { a][QY1E@?
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publicfinalstaticint PAGESIZE = 30; jJOs`'~Q\
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privateint pageSize = PAGESIZE; W$bQS!7y
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privateList items; svTKt%6X
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privateint totalCount; *c1)x
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privateint[] indexes = newint[0]; 4>I >y@^
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privateint startIndex = 0; okv`+VeA
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public PaginationSupport(List items, int ]`, jaD
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totalCount){ y
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setPageSize(PAGESIZE); ]#*S. r]
setTotalCount(totalCount); 2\/,X CQV
setItems(items); 5gZ6H/.
setStartIndex(0); G!L(K
} Tb@r@j:V
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public PaginationSupport(List items, int qVDf98
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totalCount, int startIndex){ 1q7Y,whp
setPageSize(PAGESIZE); jqeR{yo&0b
setTotalCount(totalCount); !i{9wI
setItems(items); KqI<#hUl
setStartIndex(startIndex); |0Y:
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} VsJ4sb7
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public PaginationSupport(List items, int eGF+@)K1"
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totalCount, int pageSize, int startIndex){ ^KRe(
setPageSize(pageSize); _9<nM48+t
setTotalCount(totalCount); 2b i:Q9
setItems(items); k/;%{@G)
setStartIndex(startIndex); K\3N_ztu
} !`h^S)$
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publicList getItems(){ iS]4F_|vd
return items; jr`;H
} f}%paE"
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publicvoid setItems(List items){ NQpC]#n
this.items = items; f2f2&|7
} (.Th?p%>7
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publicint getPageSize(){ >=+:lD
return pageSize; |3{"ANmm'
} \Hs*46@TC
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publicvoid setPageSize(int pageSize){ Ua2wa A
this.pageSize = pageSize; wS"`~Ql_
} 618k-
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publicint getTotalCount(){ z?I"[M
return totalCount; +~[>Usf
} Ww&r
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publicvoid setTotalCount(int totalCount){ gx ]5)O
if(totalCount > 0){ y`Nprwb
this.totalCount = totalCount; 2P(6R.8;6
int count = totalCount / C4H$w:bVk
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pageSize; hC
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if(totalCount % pageSize > 0) ,%X"Caz
count++; LuE0Hb"S8
indexes = newint[count]; 9
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for(int i = 0; i < count; i++){ #M5pQ&yZy
indexes = pageSize * kIwq%c;
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} :6[G;F7s
}else{ 9pMXjsE
this.totalCount = 0; pAtt=R,Ht
} ]*]#I?&'Hx
} =!N,{V_
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publicint[] getIndexes(){ ZTg[}+0e
return indexes; bHK[Z5
} 9~5LKg7Ac
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publicvoid setIndexes(int[] indexes){ F"| ;
this.indexes = indexes; me+u"G9I;
} Memb`3
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publicint getStartIndex(){ "~:P-]`G
return startIndex; I1 +A$<Fa
} #\l#f8(l
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publicvoid setStartIndex(int startIndex){ ,~G:>q$ad
if(totalCount <= 0) Q>g-xe 1
this.startIndex = 0; <0btwsv}
elseif(startIndex >= totalCount) dthtWnB@
this.startIndex = indexes 's\rQ-TV
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[indexes.length - 1]; @>q4hYF
elseif(startIndex < 0) -,qGEJ
this.startIndex = 0; b`fWT:?=
else{ ys- w0H
this.startIndex = indexes "BA&
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[startIndex / pageSize]; UXPF"}S2
} OIY
} 5h[<!f=
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publicint getNextIndex(){ R+5yyk\
int nextIndex = getStartIndex() + pebNE3`#
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pageSize; )CoJ9PO7
if(nextIndex >= totalCount) TdL/tg!
return getStartIndex(); y3Ul}mVhA
else B,4
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return nextIndex; ,E&W{b
} PnJA'@x
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publicint getPreviousIndex(){ f3SAK!V+s
int previousIndex = getStartIndex() - Sd *7jW?
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pageSize; ^%t{:\
if(previousIndex < 0) p?'
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return0; ^0(`:*
else q
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return previousIndex; ;]VLA9dC
} bC,SE*F\
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} }_fVv{D
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抽象业务类 +:3p*x%1H
java代码: 6Tg'9|g
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/** g+QNIM>
* Created on 2005-7-12 J:dNV<A^
*/ |k<5yj4?
package com.javaeye.common.business; (AT)w/
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import java.io.Serializable; RY9Ur
import java.util.List; <ahcE1h
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import org.hibernate.Criteria; qz
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import org.hibernate.HibernateException;
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import org.hibernate.Session; ?jn";:
import org.hibernate.criterion.DetachedCriteria; bJB*w
import org.hibernate.criterion.Projections; {W%/?d9m
import BFPy~5W
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org.springframework.orm.hibernate3.HibernateCallback; S~\u]j^%y
import D'
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org.springframework.orm.hibernate3.support.HibernateDaoS kYu"`_n}
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upport; E@8<
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import com.javaeye.common.util.PaginationSupport; 5[A4K%EL
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public abstract class AbstractManager extends p}lFV,V
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HibernateDaoSupport { #4{9l
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privateboolean cacheQueries = false; X`0`A2
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privateString queryCacheRegion; K~
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publicvoid setCacheQueries(boolean ^w~Utx4
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cacheQueries){ B'KZ >jO
this.cacheQueries = cacheQueries; YvPs
} PHqIfH [
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publicvoid setQueryCacheRegion(String J0yo@O
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queryCacheRegion){ ?q hme
this.queryCacheRegion = qj<_*
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queryCacheRegion; d1/uI^8>
} Q);^gV
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publicvoid save(finalObject entity){ `AxhA.&V
getHibernateTemplate().save(entity); :\,3=suWq
} [(/IV+
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publicvoid persist(finalObject entity){
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getHibernateTemplate().save(entity); usOIbrQ
} &&($LnyA]
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publicvoid update(finalObject entity){ v1~`76^
getHibernateTemplate().update(entity); v`9n'+h-c6
} <rFKJ^ B
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publicvoid delete(finalObject entity){ < c[dpK5c
getHibernateTemplate().delete(entity); M\jTeB"Z
} '>"-e'1m(
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publicObject load(finalClass entity, l;'c6o0e
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finalSerializable id){ +)-`$N
return getHibernateTemplate().load i>L>3]SRr{
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(entity, id); Wf:I
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publicObject get(finalClass entity, ?#_] Lzn'
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finalSerializable id){ ;c;PNihg
return getHibernateTemplate().get yXL]uh#b
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(entity, id); PV/SzfvIq
} Mwd(?o
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publicList findAll(finalClass entity){ ~$Pz`amT|
return getHibernateTemplate().find("from
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" + entity.getName()); ^PI8Bvs>j
} Hm55R
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publicList findByNamedQuery(finalString XhxCOpO
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namedQuery){ q$6Tb
return getHibernateTemplate J\x.:=V
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().findByNamedQuery(namedQuery); I:G4i}mA
} "8h7"WR
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publicList findByNamedQuery(finalString query, #iAEcC0k5
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finalObject parameter){ h$~\to$C
return getHibernateTemplate TEi~X2u
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().findByNamedQuery(query, parameter); `t~Zkb4>
} Gw)>i45:
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publicList findByNamedQuery(finalString query, GV T[)jS
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finalObject[] parameters){ {@w!kl~8
return getHibernateTemplate G@Y!*ZH*f
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().findByNamedQuery(query, parameters); ^E(:nxQ6s
}
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publicList find(finalString query){ 9akIu.H
return getHibernateTemplate().find _r&,n\
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(query); xf]_@T;
} a@&P\"k
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publicList find(finalString query, finalObject y}t1r |p
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parameter){ &KS*rHgt?
return getHibernateTemplate().find H~Fb=.h]U
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