Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 + {]j]OP
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 I%):1\)
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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 X}]-*T|a
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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 4+n\k
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分页支持类: GgU/!@
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java代码: c-w)|-ac.
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package com.javaeye.common.util; 2wn2.\v M
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import java.util.List; [
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publicclass PaginationSupport { XW9!p.*.U
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publicfinalstaticint PAGESIZE = 30; =N@t'fOr
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privateint pageSize = PAGESIZE; s2?&!
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privateList items; :Tc^y%b0
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privateint totalCount; G3]4A&h9v~
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privateint[] indexes = newint[0]; a.'*G6~Qgw
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privateint startIndex = 0; V~bD)?M
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public PaginationSupport(List items, int <{pz<io)
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totalCount){ c,22*.V/
setPageSize(PAGESIZE); g`^x@rj`E
setTotalCount(totalCount); l%ZhA=TKQ
setItems(items); @o^Ww
setStartIndex(0); wBzC5T%,
} l0]
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public PaginationSupport(List items, int _ |p8M!
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totalCount, int startIndex){ \jA~9
setPageSize(PAGESIZE); >7r!~+B"9'
setTotalCount(totalCount); \9d$@V
setItems(items); l~.-e^p?
setStartIndex(startIndex);
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} /=h` L,
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public PaginationSupport(List items, int P4?glh q#
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totalCount, int pageSize, int startIndex){ h~26WLf.
setPageSize(pageSize); #%s#c0TX
setTotalCount(totalCount); "j-CZ\]U|
setItems(items); C?Ucu]cW
setStartIndex(startIndex); yNc2@
} YP9^Bp{0
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publicList getItems(){ $"&JWT!#
return items; Tr|JYLwF
} .o8t+X'G
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publicvoid setItems(List items){ ':}\4j&{E
this.items = items; Wf<LR3
} fatf*}eln
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publicint getPageSize(){ HqTjl4ai
return pageSize; vj*%Q(E6Pt
} .KC++\{HE
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publicvoid setPageSize(int pageSize){ {|\.i
this.pageSize = pageSize; }i2V.tVB-
} ]HdCt 3X
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publicint getTotalCount(){ xCKRxF
return totalCount; v@Ox:wl>
} s79r@])=
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publicvoid setTotalCount(int totalCount){ hEk$d.!}
if(totalCount > 0){ 'n|5ZhXPB
this.totalCount = totalCount; v
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int count = totalCount / T>GM%^h,7-
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pageSize; y==CTY@
if(totalCount % pageSize > 0) 5-G@L?~Vw
count++; xKC[=E>z
indexes = newint[count]; TPY}C
for(int i = 0; i < count; i++){ E"@wek.-
indexes = pageSize * j=J/x:w_e
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} Dxxm="FQZ
}else{ LDD|(KLR*.
this.totalCount = 0; yZ`wfj$Jj
} 1QJL .
} EZj9wd"u
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publicint[] getIndexes(){ _y3Xb`0a
return indexes; '=6\v!
} 9mFE?J
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publicvoid setIndexes(int[] indexes){ nLiY%x`S
this.indexes = indexes; `p7=t)5k
} S@Hf
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publicint getStartIndex(){ Bw{I;rW{2
return startIndex; pD74+/DD
} "Yca%:
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publicvoid setStartIndex(int startIndex){ hG:|9Sol,
if(totalCount <= 0) @fV9
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this.startIndex = 0; l$'wD hN*
elseif(startIndex >= totalCount) ~!3r&(
this.startIndex = indexes _7)n(1h[3b
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[indexes.length - 1]; sse.*75U
elseif(startIndex < 0) $2el&I
this.startIndex = 0; f4Rf?w*
else{ =kqt
this.startIndex = indexes \r>6`-cs]
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[startIndex / pageSize]; I,'k>@w{s
} UEVG0qF
} -[DOe?T
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publicint getNextIndex(){ uL/m u<
int nextIndex = getStartIndex() + HgkC~'
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pageSize; U!Z,xx[]
if(nextIndex >= totalCount) SG4%}wn%
return getStartIndex(); lo!+f"7ym\
else )D82N`c2\i
return nextIndex; {T
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} Gm.]sE?.
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publicint getPreviousIndex(){ NL0n009"c$
int previousIndex = getStartIndex() - LAe6`foW/
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pageSize; CoAvSw
if(previousIndex < 0) e,XYVWY%
return0; y%bF&
else S+ ^E.
return previousIndex; VD]zz
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} k/gZ,
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} "4,?uPi
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抽象业务类 P &e\)Z|
java代码: tWa)_y
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/** *6F[t.Or
* Created on 2005-7-12 s)Cjc.Qs
*/ 2nIw7>.}f
package com.javaeye.common.business; BV upDGh3
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import java.io.Serializable; *zL}&RUKM
import java.util.List; J9iy
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import org.hibernate.Criteria; wInh~p
import org.hibernate.HibernateException; p\ZNy\N^
import org.hibernate.Session; hL;(C)(
import org.hibernate.criterion.DetachedCriteria; Nyj( 0W
import org.hibernate.criterion.Projections; u'W8;G*~
import Hi1JLW,
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org.springframework.orm.hibernate3.HibernateCallback; +sUFv)!4
import D"?fn<2
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org.springframework.orm.hibernate3.support.HibernateDaoS g($DdKc|g
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upport; 8tFoN*M
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import com.javaeye.common.util.PaginationSupport; (/j/>9iro
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public abstract class AbstractManager extends Ix=}+K/
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HibernateDaoSupport { }h!f eP
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privateboolean cacheQueries = false; ft KTnK.
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privateString queryCacheRegion; DLMM/WJg@
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publicvoid setCacheQueries(boolean Y
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cacheQueries){ {~sDYRX
this.cacheQueries = cacheQueries; $5<#n@
} lXiKY@R#
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publicvoid setQueryCacheRegion(String ?_vakJ
)
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queryCacheRegion){ D \sWZ
this.queryCacheRegion = Oz`BEyb]{
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queryCacheRegion; 5^lxj~ F
} orfO^;qTY
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publicvoid save(finalObject entity){ \$\ENQ;Nk
getHibernateTemplate().save(entity); ()+<)hg}2
} WDPb!-VT
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publicvoid persist(finalObject entity){ 27"%"P.1
getHibernateTemplate().save(entity); OJ$]V,Z00x
} I}6\Sv=
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publicvoid update(finalObject entity){ YWe"zz
getHibernateTemplate().update(entity); ^1aAjYFn
} 7-T{a<g
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publicvoid delete(finalObject entity){ Jjv=u
getHibernateTemplate().delete(entity); tj4VWJK
} V=V:SlS9|
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