Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ;$WHTO(
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 QF)\\D[
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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 K>dB{w#gS
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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 >))CXGE
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分页支持类: Dn6U8s&
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java代码: o:D,,MkSw
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package com.javaeye.common.util; +? h}e
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import java.util.List; kk%3 2(By
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publicclass PaginationSupport { _Z23lF9
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publicfinalstaticint PAGESIZE = 30; )\|+G5#`
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privateint pageSize = PAGESIZE; W7^[W.
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privateList items; G@.MP|
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privateint totalCount; < cvh1~>(
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privateint[] indexes = newint[0]; n:,mo} ?X
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privateint startIndex = 0; =5q<_as
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public PaginationSupport(List items, int lG}#K^q
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totalCount){ ]3rVULU"K-
setPageSize(PAGESIZE); Iko]c_W0
setTotalCount(totalCount); VG);om7`PD
setItems(items); |5bLV^mv]i
setStartIndex(0); Ttt'X<9
} D7;9D*o\
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public PaginationSupport(List items, int g1s%x=7/
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totalCount, int startIndex){ xWxc1tT`
setPageSize(PAGESIZE); 9 3>4n\
setTotalCount(totalCount); Qc; kj
setItems(items); t:2v`uk
setStartIndex(startIndex); u=
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} Ax;=Zh<DAv
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public PaginationSupport(List items, int l4>^79* *
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totalCount, int pageSize, int startIndex){ O`B,mgT(
setPageSize(pageSize); <h/%jM>9/
setTotalCount(totalCount); {~3QBMx6
setItems(items); `7CK;NeT
setStartIndex(startIndex); 8R,<S-+v
} TmsIyDcD~
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publicList getItems(){ vrkY7L3\
return items; /ad9Q~nJ
} rO'DT{Yt
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publicvoid setItems(List items){ 9
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this.items = items; J@s>Pe)
} K#0TD("
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publicint getPageSize(){ ieFl4hh[G
return pageSize; o4);5~1l
} 1~5DIU^
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publicvoid setPageSize(int pageSize){ 0cd_l
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this.pageSize = pageSize; qCV<-o
} 2
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publicint getTotalCount(){ 558P"w0"X
return totalCount; #Wk=y?sn
} e-nA>v
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publicvoid setTotalCount(int totalCount){ CM;b_E)9)f
if(totalCount > 0){ o~Se[p
this.totalCount = totalCount;
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int count = totalCount / .ZpOYhk
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pageSize; WsI`!ez;D
if(totalCount % pageSize > 0) !@xO]Jwv
count++;
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indexes = newint[count]; -V2\s
for(int i = 0; i < count; i++){ N3%X>*'
indexes = pageSize * 2 !s&|lI
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} 0j.K?]f)h
}else{ E}@C4pS
this.totalCount = 0; "
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} J2YQdCL
} z3oi(
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publicint[] getIndexes(){ (l{vlFWd
return indexes; '![oLy
} *g/klK
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publicvoid setIndexes(int[] indexes){ ,>GHR{7>(
this.indexes = indexes; ;_o]$hV|
} eqbN_$>
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publicint getStartIndex(){ LG #^g6P
return startIndex; BR,-:?z
}
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publicvoid setStartIndex(int startIndex){ $Ome]+0
if(totalCount <= 0) c8l>OS5i3_
this.startIndex = 0; j4.wd
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elseif(startIndex >= totalCount) +iVEA(0&$
this.startIndex = indexes p"g|]@m
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[indexes.length - 1]; h>N}M}8
elseif(startIndex < 0) GG}%
this.startIndex = 0; wPA^nZ^}9c
else{ ]c.w+<
this.startIndex = indexes wQ}r/2n|^
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[startIndex / pageSize]; .E4*>@M5
} E5k)~P`|
} z _!ut
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publicint getNextIndex(){ swKkY`g
int nextIndex = getStartIndex() + +vBi7#&
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pageSize; Q;M\fBQO}&
if(nextIndex >= totalCount) ?,} u6tH
return getStartIndex(); $3-vW{<
else +>$]leqa
return nextIndex; Q;h.}N8W
} _Nx
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publicint getPreviousIndex(){ +#O+%!
int previousIndex = getStartIndex() - >Vuvbo
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pageSize; dP5x]'"x
if(previousIndex < 0) x7j#@C
return0; %)ho<z:7U
else K,b
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return previousIndex; 3DU1c?M:
} Ndmt$(b
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} 04a
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抽象业务类 ;b~ S/
java代码: _;lw,;ftA
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/** U|^xr~q!f-
* Created on 2005-7-12 $=aO*i
*/ @6u/)>rI
package com.javaeye.common.business; 7|rH9Bc{U
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import java.io.Serializable; sZ;|NAx)
import java.util.List; D6 B-#u!M
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import org.hibernate.Criteria; 2
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import org.hibernate.HibernateException; Z\&f"z?L
import org.hibernate.Session; sD|l}f
import org.hibernate.criterion.DetachedCriteria; 4S_ -9&z
import org.hibernate.criterion.Projections; Xn7G2Yp
import C2
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org.springframework.orm.hibernate3.HibernateCallback; ]
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org.springframework.orm.hibernate3.support.HibernateDaoS e#Tv5O
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upport; >{#JIG.
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import com.javaeye.common.util.PaginationSupport; fFQ|dE;cF
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public abstract class AbstractManager extends b#j:)PA0C
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HibernateDaoSupport { eUPa5{P
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privateboolean cacheQueries = false; bO~y=Pa\
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privateString queryCacheRegion; WT
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publicvoid setCacheQueries(boolean 8K%N7RL|
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cacheQueries){ %mI0*YRma
this.cacheQueries = cacheQueries; 'yo@5*x7
} FX:`7c]:9
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publicvoid setQueryCacheRegion(String 9A.RD`fg
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queryCacheRegion){ kY0HP a
this.queryCacheRegion = $|4@Zx4vf
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queryCacheRegion; 3JazQU
} ~.a"jYb7A}
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publicvoid save(finalObject entity){ WBe0^=x
getHibernateTemplate().save(entity); 4GYi'
} lExQp2E
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publicvoid persist(finalObject entity){ t)SZ2G1r
getHibernateTemplate().save(entity); |IxHtg3>6{
} OL'Ito
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publicvoid update(finalObject entity){ | dQ>)_
getHibernateTemplate().update(entity); kVnRSg}R
} X>(1fra4
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publicvoid delete(finalObject entity){ A40DbD\^ad
getHibernateTemplate().delete(entity); >e]g T
} (;NJ<x
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publicObject load(finalClass entity, woI5a ee|
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finalSerializable id){ dQ:,pe7A
return getHibernateTemplate().load K#"=*p,
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(entity, id); u6iW1,#
} #^FM~5KK
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