Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 L V9\
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ]jM D'vg^b
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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 M"~B_t,Nw
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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 ;r8,Wx@f1C
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分页支持类: C10A$=!
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java代码: mB_ba1r
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package com.javaeye.common.util; @ /c{gD
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import java.util.List; 3):7mE(
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publicclass PaginationSupport { m@"!=CTKd
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publicfinalstaticint PAGESIZE = 30; WqwD"WX+w
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privateint pageSize = PAGESIZE; $YL}rM
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privateList items; !07$aQYcd
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privateint totalCount; "BEU%,w
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privateint[] indexes = newint[0]; W5sVQ`S-
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privateint startIndex = 0; |RHX2sso
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public PaginationSupport(List items, int >uxak2nM-
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totalCount){ XIf,#9
setPageSize(PAGESIZE); $D8KEkW
setTotalCount(totalCount); R%SsHu">
setItems(items); l--xq^,`o]
setStartIndex(0); SyTcp?H
} r+\it&cW+
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public PaginationSupport(List items, int 0p&:9|'z
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totalCount, int startIndex){ @4hxGk=
setPageSize(PAGESIZE); 7;c{lQOj}
setTotalCount(totalCount); <@e6zQG
setItems(items); 0^tF_."Y
setStartIndex(startIndex);
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} vPpbm
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public PaginationSupport(List items, int : 8(~{<R
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totalCount, int pageSize, int startIndex){ 9?l(
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setPageSize(pageSize); (#7pGGp*E
setTotalCount(totalCount); w QwY_ _
setItems(items); N4'b]:`n
setStartIndex(startIndex); vy6NH5Q
} >0B[
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publicList getItems(){ <S TwylL
return items; JA())0a
} ?=f\oH$
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publicvoid setItems(List items){ G;wv.|\
this.items = items; vg
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} et/mfzV
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publicint getPageSize(){ Hm%[d;Z7
return pageSize; 2.?:[1g!
} UV@<55)K
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publicvoid setPageSize(int pageSize){ ?9 2+(s
this.pageSize = pageSize; Y~gpi L3u
} vAU^<$D27
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publicint getTotalCount(){ eBtkTWx5[/
return totalCount; u [fQvdl
} Cg8{NNeD
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publicvoid setTotalCount(int totalCount){ @q[-,EA9
if(totalCount > 0){ rTW1'@E
this.totalCount = totalCount; g)xzy^2e
int count = totalCount / Y==# yNwM
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pageSize; |M0 XLCNd_
if(totalCount % pageSize > 0) goWD~'\
count++; !Wn'Ae9
indexes = newint[count]; l&U3jeW-o
for(int i = 0; i < count; i++){ 29x
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indexes = pageSize * Q
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} st/Tb/
}else{ f}nGWV%,
this.totalCount = 0; W >;AMun
} nolTvqMT
} $(#o)r>_R
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publicint[] getIndexes(){ ||9f@9
return indexes; ?W%3>A
} (#\3XBG
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publicvoid setIndexes(int[] indexes){ .J&~u0g
this.indexes = indexes; efZdtrKgy
} JI@~FD&
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publicint getStartIndex(){ sfa T`q
return startIndex; I`DdhMi7
} +-
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publicvoid setStartIndex(int startIndex){ /xj'Pq((}p
if(totalCount <= 0) y)Ip\.KV\
this.startIndex = 0; E5-8tHV
elseif(startIndex >= totalCount) r(%#@?&
this.startIndex = indexes :mL\KQ
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[indexes.length - 1]; !OC?3W:^_
elseif(startIndex < 0) |)
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this.startIndex = 0; G'}%m;-mt
else{ |;9OvR> A
this.startIndex = indexes 2!{CNt.-
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[startIndex / pageSize]; {hZZU8*
} 2*%0m^#^6
} yd#4b`8U`
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publicint getNextIndex(){ BYNOgB1
int nextIndex = getStartIndex() + )1lYfJ
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pageSize; &'T7 ~M:
if(nextIndex >= totalCount) ''v_8sv
return getStartIndex(); gaTI:SKzc
else 78y4nRQ*
return nextIndex; dy|r:~j3
} )Ky0q-W
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publicint getPreviousIndex(){ !\+SE"ml
int previousIndex = getStartIndex() - &..'7
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pageSize; `'+[Y;s_
if(previousIndex < 0) z$%ntN#eNA
return0; |p.mA-81
else sN^R Z0!>
return previousIndex; 4Q_2GiF_
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} PM o>J|^
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} }SUe 4r&4}
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抽象业务类 yd`.Rb&V
java代码: k
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/** j~Rh_\>Q
* Created on 2005-7-12 6i{W=$RQ
*/ aHwrFkn
package com.javaeye.common.business; lZ/Yp~2S
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import java.io.Serializable; E83{4A4
import java.util.List; wU?2aXY
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import org.hibernate.Criteria; W#-M|
import org.hibernate.HibernateException; F-UY~i8
import org.hibernate.Session; jDy
import org.hibernate.criterion.DetachedCriteria; Wa,[#H
import org.hibernate.criterion.Projections; _2U1$0xK
import |/YT.c%
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org.springframework.orm.hibernate3.HibernateCallback; V&)-u(s_S/
import ]U'KYrh
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org.springframework.orm.hibernate3.support.HibernateDaoS LD]XN'?"W
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upport; Ur]5AJ
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import com.javaeye.common.util.PaginationSupport; xjv?Z"X
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public abstract class AbstractManager extends MLId3#Q
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HibernateDaoSupport { $p}7CP
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privateboolean cacheQueries = false; m|=/|Hm
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privateString queryCacheRegion; XZIj' a0d
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publicvoid setCacheQueries(boolean 70*Y4'u}A
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cacheQueries){ OG!^:OY
this.cacheQueries = cacheQueries; mhT3 Fwc
} .P-@ !Q5*
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publicvoid setQueryCacheRegion(String "aAzG+NM
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queryCacheRegion){ z1(rHJd
this.queryCacheRegion = M nH4p
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queryCacheRegion; =#n|t[h-
} A2*z
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publicvoid save(finalObject entity){ #pE:!D
getHibernateTemplate().save(entity); ^MQ7*g6o
} v7xc01x
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publicvoid persist(finalObject entity){ vezX/x D?
getHibernateTemplate().save(entity); |BF4F5wC?
} ^Shz[=fd
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publicvoid update(finalObject entity){ 4CfPa6_
getHibernateTemplate().update(entity); /<
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} $(.[b][S
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publicvoid delete(finalObject entity){ /&cb`^"U^
getHibernateTemplate().delete(entity); O .m;a_
} <gQw4
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publicObject load(finalClass entity, b2r@vZ]D
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finalSerializable id){ 2c_#q1/Z/
return getHibernateTemplate().load vX/~34o]\
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(entity, id); UR:cBr
} SWPr5h
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publicObject get(finalClass entity, '-S^z"ZrI
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finalSerializable id){ :TX!lbCq
return getHibernateTemplate().get .)ZK42Qd
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(entity, id); YRAWylm
} 8b[^6]rM
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publicList findAll(finalClass entity){ ~t.*B& A
return getHibernateTemplate().find("from E@Q+[~H }
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" + entity.getName()); 9ZeTS~i
} D CcM~
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publicList findByNamedQuery(finalString ja#E}`wC4
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namedQuery){ 3?.3Z!H/
return getHibernateTemplate '
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().findByNamedQuery(namedQuery); XGbtmmQG
} _U|s!60'
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publicList findByNamedQuery(finalString query, w8%<O^wN,
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finalObject parameter){ -c~nmPEG6
return getHibernateTemplate {: T'2+OH>
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().findByNamedQuery(query, parameter); @K3<K(
} HYZ94[Ti
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publicList findByNamedQuery(finalString query, hwSn?bkw
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finalObject[] parameters){ cX9
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return getHibernateTemplate
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().findByNamedQuery(query, parameters); &S>m+m'
} V<ziJ7H/
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publicList find(finalString query){ W}50E.\#
return getHibernateTemplate().find FrIgu k1
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(query); n?
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} t$m268m~
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publicList find(finalString query, finalObject k id3@
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parameter){ N2 wBH+3w
return getHibernateTemplate().find +ng8!k
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(query, parameter); jSsbLa@
} G&I\Za;
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public PaginationSupport findPageByCriteria y)0r%=
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(final DetachedCriteria detachedCriteria){ +[<|TT
return findPageByCriteria 7q&Ru|T33
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); }te\)
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} Uf}s6#
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public PaginationSupport findPageByCriteria l{[{pAm
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(final DetachedCriteria detachedCriteria, finalint OlL
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startIndex){ 9%^q?S/Rv
return findPageByCriteria T>7$<ulm
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(detachedCriteria, PaginationSupport.PAGESIZE, %5?qS`/c(
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startIndex); 3xj
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} JL5
)
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public PaginationSupport findPageByCriteria 80TSE*
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(final DetachedCriteria detachedCriteria, finalint 9lbe[w@
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pageSize, ]:uJ&xUar