Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 V7d)S&*V
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 KRAcnY;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 <BFQ:
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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 >Fio;cn?
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分页支持类: S$TmZk=
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java代码: ,DdB^Ig<r
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package com.javaeye.common.util; (*}yjUYLZ
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import java.util.List; >Y7a4~ufko
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publicclass PaginationSupport { }KUd7[s
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publicfinalstaticint PAGESIZE = 30; :x.7vZzxs
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privateint pageSize = PAGESIZE; :y*NM,s
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privateList items; 7tUA>;++
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privateint totalCount; &Z(K6U#.
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privateint[] indexes = newint[0]; F+R?a+e
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privateint startIndex = 0; j',W 64
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public PaginationSupport(List items, int v+p{|X-
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totalCount){ XO#/Fv!
setPageSize(PAGESIZE); vEf4HZ&w
setTotalCount(totalCount); hfpJ+[
setItems(items); 8fA_p}wp
setStartIndex(0); GjoIm?
} #^m0aB7r
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public PaginationSupport(List items, int D\IjyZ-O
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totalCount, int startIndex){ ^,m< 9
setPageSize(PAGESIZE); P96pm6H_;
setTotalCount(totalCount); _zlqtO
setItems(items); zvABU+{jD
setStartIndex(startIndex); BA\/YW @
} `:N# 'i
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public PaginationSupport(List items, int B8E'ddUw
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totalCount, int pageSize, int startIndex){ n]8<DX99Q0
setPageSize(pageSize); %X#zj"
setTotalCount(totalCount); ~l;[@jsw F
setItems(items); 2,ECYie^
setStartIndex(startIndex); )`^p%k
} 6'\6OsH
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publicList getItems(){ G\|,5HED
return items; s4&^D<
} h -iJlm
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publicvoid setItems(List items){ 3u%{dG a
this.items = items; j+>J,axU!
} 9x,RvWTb
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publicint getPageSize(){ ss;R8:5
return pageSize; 8~5cJPi6
} a0r"N[&
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publicvoid setPageSize(int pageSize){ [O:
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this.pageSize = pageSize; t_mIOm)S%
} y:v, j42%
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publicint getTotalCount(){ lu Q~YjH
return totalCount; Mq';S^
} cuOvN"nuNj
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publicvoid setTotalCount(int totalCount){ =8U&[F
if(totalCount > 0){ Q:J^"
this.totalCount = totalCount; >X*Mio8P#
int count = totalCount / sz9L8f2
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pageSize; Z7 E
if(totalCount % pageSize > 0) qzb<J=FAU
count++; DTWD|M
indexes = newint[count]; )BRKZQN
for(int i = 0; i < count; i++){ 1sYEZO;
indexes = pageSize * m3o,@=b
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} LM2TZ
}else{ RT%pDym\
this.totalCount = 0; sXNb }gJ
} CbN!1E6).
} *Q1~S]g
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publicint[] getIndexes(){ bXS:x
return indexes; c6Y\n%d&
} ;NNe!}C
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publicvoid setIndexes(int[] indexes){ :d ~|jS
this.indexes = indexes; (Vo>e =q
} 7Pa@1']
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publicint getStartIndex(){ Wh&8pH:
return startIndex; L/"0ws_
} LzYO$Ir:g
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publicvoid setStartIndex(int startIndex){ !t i6
if(totalCount <= 0) (%`QhH
this.startIndex = 0; k__$Q9qj(
elseif(startIndex >= totalCount) /T.KbLx~q
this.startIndex = indexes &N3Y|2
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[indexes.length - 1]; .L~Nq%g1
elseif(startIndex < 0) j2 !3rI
this.startIndex = 0; cV`E>w=D0
else{ Z}-Vf$O~
this.startIndex = indexes JMTvSXr
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[startIndex / pageSize]; SXt{k<|
} Bn!$UUC
} >2By
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publicint getNextIndex(){ j)
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int nextIndex = getStartIndex() + 8/K!SpM*d
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pageSize; Q:$Zy
if(nextIndex >= totalCount) $ Y 7c
return getStartIndex(); {W##^L~
else X6^},C'E.:
return nextIndex; `%j~|i)4
} !~h}8'a?
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publicint getPreviousIndex(){ Q);n<Z:X~
int previousIndex = getStartIndex() - GIAc?;zY
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pageSize; E#s)52z=B
if(previousIndex < 0) d:F @a
return0; hUm'8)OJ
else d[;.r
return previousIndex; w4fW<ISg
} +kFxi2L6
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} B*E2.\~
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抽象业务类 mq%<6/YU
java代码: /x1MPP>fu
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/** +CI1V>6^
* Created on 2005-7-12 F-*2LMe
*/ ?ByM[E$
package com.javaeye.common.business; xz:J
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import java.io.Serializable; O-4C+?V
import java.util.List; )$,"u4
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import org.hibernate.Criteria; 2W$cFC
import org.hibernate.HibernateException; TXZv2P9
import org.hibernate.Session; K5"#~\D
import org.hibernate.criterion.DetachedCriteria; )*:`':_a
import org.hibernate.criterion.Projections; Vi$-Bw$@
import (<
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org.springframework.orm.hibernate3.HibernateCallback; @'=Uq
import }Nb8}(6
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org.springframework.orm.hibernate3.support.HibernateDaoS 7h)iu9j
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upport; 6[]]Y,Y
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import com.javaeye.common.util.PaginationSupport; 5K?}}Frrt`
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public abstract class AbstractManager extends D0N9Ksq
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HibernateDaoSupport { Q#EP|
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privateboolean cacheQueries = false; J sEa23
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privateString queryCacheRegion; d,by/.2
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publicvoid setCacheQueries(boolean wRrnniqf8
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cacheQueries){ u~)`&1{%
this.cacheQueries = cacheQueries; Y\0}R,]a-
} Uw4>v:
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publicvoid setQueryCacheRegion(String %N#%|2B
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queryCacheRegion){ CwJDmz\tk
this.queryCacheRegion = Ks\ NE=;5
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queryCacheRegion; lb:/EUd5
} RNQK
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publicvoid save(finalObject entity){ sZLT<6_B
getHibernateTemplate().save(entity); `~X!Ll
} " ZX3sfkh
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publicvoid persist(finalObject entity){ 4l&g6YneX
getHibernateTemplate().save(entity); /W<>G7%.
} eu|j=mB
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publicvoid update(finalObject entity){ b]a@
getHibernateTemplate().update(entity); "U\JV)N
} p^iRPI
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publicvoid delete(finalObject entity){ +<prgP`v
getHibernateTemplate().delete(entity); ;us%/kOR
} ",)Qc!^P$
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publicObject load(finalClass entity, !cGDy/|
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finalSerializable id){ rS1fK1dys
return getHibernateTemplate().load *Y@nVi
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(entity, id); b$eXFi/
} )Af~B'OUd
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publicObject get(finalClass entity, 9!><<7TS
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finalSerializable id){ FE o269Ur
return getHibernateTemplate().get sN("+ sZ.n
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(entity, id); .I@CS>j
} H}LS??P
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publicList findAll(finalClass entity){
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return getHibernateTemplate().find("from 7n90f2"m
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" + entity.getName()); <x\7L2#p
} ^'jEnN(
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publicList findByNamedQuery(finalString XW?b\!@ $
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namedQuery){ z5bo_Eq
return getHibernateTemplate "@9?QI}
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().findByNamedQuery(namedQuery); F,5r9^,_
} [TCP-bU
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publicList findByNamedQuery(finalString query, &P,^.'
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finalObject parameter){ W>b(Om_%
return getHibernateTemplate MC&\bf
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().findByNamedQuery(query, parameter); *.&