Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 P7drUiX
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 l~r;Grd/5
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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 \"O5li3n
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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 Qte5E}V`
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分页支持类: c^r8<KlI9
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java代码: fbq$:Q44
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package com.javaeye.common.util; J6Ilg@}\
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import java.util.List; 2/?Zp=|j\
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publicclass PaginationSupport { lJK]S=cd
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publicfinalstaticint PAGESIZE = 30; Ic/hVKYG5
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privateint pageSize = PAGESIZE; aq?bI:>8
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privateList items; ?@"@9na
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privateint totalCount; yq~
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privateint[] indexes = newint[0]; +Br<;sW
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privateint startIndex = 0; TK5$-6k
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public PaginationSupport(List items, int
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totalCount){ c~T{;
setPageSize(PAGESIZE); :w^:Z$-hf
setTotalCount(totalCount); :|j[{;asY
setItems(items); KMhrw s{&B
setStartIndex(0); DI0& _,
} $xu2ZBK
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public PaginationSupport(List items, int Ab$E@H#
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totalCount, int startIndex){ 4phCn5
setPageSize(PAGESIZE); Q YA4C1h'
setTotalCount(totalCount); #(]D]f[@
setItems(items); r]e{~v/
setStartIndex(startIndex); 2zj`
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} WAn@8!9
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public PaginationSupport(List items, int %pZT3dcK
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totalCount, int pageSize, int startIndex){ +wQ5m8E
setPageSize(pageSize); Ec7xwPk
setTotalCount(totalCount); A+/Lt>+AS
setItems(items); \9+,ynJH8z
setStartIndex(startIndex); dX?j/M-
} G]B0LUT6c
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publicList getItems(){ 29Uqdo
return items; h%j4(v}r{C
} BFNO yv
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publicvoid setItems(List items){ dz#"9i5b
this.items = items; }cz58%
} /IirTmFK
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publicint getPageSize(){ wU%uO/sU9
return pageSize; Md6u4c
} ~cr iZI/
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publicvoid setPageSize(int pageSize){ orJ|Q3c)d
this.pageSize = pageSize; hTBJ\1
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} ]Jz=.F sO
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publicint getTotalCount(){ &tOo[U?
return totalCount; 9^Xndo]y
} RlfI]uCDM
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publicvoid setTotalCount(int totalCount){ &wNr2PHd#
if(totalCount > 0){ cJSNV*<
this.totalCount = totalCount; W@}@5,}f>
int count = totalCount / B+FTkJ0t+G
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pageSize; x.gz sd
if(totalCount % pageSize > 0) |mhKD#:
count++; oX6Cd:c-
indexes = newint[count]; >uCO=T,|
for(int i = 0; i < count; i++){ PCCE+wC6
indexes = pageSize * X}B]5
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} iu{y.}?
}else{ @G&oUhS
this.totalCount = 0; `y'%dY}$n
} 3B#fnj
} 2-S}#S}2C
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publicint[] getIndexes(){ k1[`2k:Hk
return indexes; e,XT(KY
} X'd\b}Bm
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publicvoid setIndexes(int[] indexes){ nR%w5oe
this.indexes = indexes; ?r;F'%N=
} K*~xy bA
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publicint getStartIndex(){ 8?~>FLWTXZ
return startIndex; a[t"J*0
} V xN!Ki=
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publicvoid setStartIndex(int startIndex){ ?(s9dS,7wZ
if(totalCount <= 0) ,ig`'U
this.startIndex = 0; Lh+7z>1
elseif(startIndex >= totalCount) +) 9=bB
this.startIndex = indexes 8hV4l'Pa72
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[indexes.length - 1]; /p-k'387
elseif(startIndex < 0) @V4nc
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this.startIndex = 0; JA >&$h
else{ *h?*RUQ
this.startIndex = indexes BDp(&=ktq
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[startIndex / pageSize]; ddYb=L+_b
} B <Jxj
} RCkmxO;b&
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publicint getNextIndex(){ .:-*89c
int nextIndex = getStartIndex() + i39_( )X
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pageSize; *<9M|H~
if(nextIndex >= totalCount) SOD3MsAK
return getStartIndex(); $hM9{
else Kd}%%L
return nextIndex; .Sm 8t$
} z#5qI',L
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publicint getPreviousIndex(){ x!4<ff.
int previousIndex = getStartIndex() - 2Z(?pJyDM
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pageSize; Nj;(QhYZ
if(previousIndex < 0) m=`V
return0; PtjAu
else \KEmfCx'n
return previousIndex; 2%l(qfN9
} SM}&
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} &sq q+&ao
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抽象业务类 ylmVmHmc
java代码: * se),CP!s
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/** ]VVx2ERs
* Created on 2005-7-12 iA2TvP#
*/ ]:6IW:
package com.javaeye.common.business; yWYsN
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import java.io.Serializable; 6.v)q,JL
import java.util.List; J@Nq
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import org.hibernate.Criteria; "jq F
import org.hibernate.HibernateException; &>@EfW](
import org.hibernate.Session; Kn+B):OY+
import org.hibernate.criterion.DetachedCriteria; Xp^71A?>
import org.hibernate.criterion.Projections; e<{Ani0
import bmC{d
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org.springframework.orm.hibernate3.HibernateCallback; A*{V%7hs&
import M/6q
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org.springframework.orm.hibernate3.support.HibernateDaoS *fDhNmQ `
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upport; :as2fO$?
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import com.javaeye.common.util.PaginationSupport; BfvvJh_
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public abstract class AbstractManager extends _'r&'s;<z
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HibernateDaoSupport { M-f; ,>
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privateboolean cacheQueries = false; 0o!Egq_
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privateString queryCacheRegion; ue6&)7:~
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publicvoid setCacheQueries(boolean gDsb~>rb|
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cacheQueries){ BG20R=p
this.cacheQueries = cacheQueries; _%aJ/Y0Cy
} i\P)P!
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publicvoid setQueryCacheRegion(String SnW>`
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queryCacheRegion){ `oH6'+fT`;
this.queryCacheRegion = &FzZpH
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queryCacheRegion; ytGcigw(P
} ,dk!hm u
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publicvoid save(finalObject entity){ [lAZ)6E~=
getHibernateTemplate().save(entity); pj'[
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} v+`gQXJ"G
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publicvoid persist(finalObject entity){ 7pz #%Hf
getHibernateTemplate().save(entity); sZPA(N?
} FAd4p9[Y
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publicvoid update(finalObject entity){ $>PV6
getHibernateTemplate().update(entity); h.h\)>DM@
} |Xk>a7X
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publicvoid delete(finalObject entity){ |`6*~ciUV
getHibernateTemplate().delete(entity); H(j983
} b\Gw|?Rv
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publicObject load(finalClass entity, KdtQJ:_`k
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finalSerializable id){ lK3Z}e*eXQ
return getHibernateTemplate().load (E?X@d iu
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(entity, id); ^NiS7 )FX
} %FO#j 6
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publicObject get(finalClass entity, LYyOcb[x
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finalSerializable id){ ;JQ;LbEn
return getHibernateTemplate().get ]eZrb%B.
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(entity, id); \B~}s }
} Qc]Ki3ls
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publicList findAll(finalClass entity){ dBMr%6tz
return getHibernateTemplate().find("from r5g:#mF"
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" + entity.getName()); N3g\X
} 5ki<1{aVtZ
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publicList findByNamedQuery(finalString avo[~ `.
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namedQuery){ j LG
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return getHibernateTemplate a$ FO5%o
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().findByNamedQuery(namedQuery);
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} 0'0GAh2
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publicList findByNamedQuery(finalString query, m3E`kW|
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finalObject parameter){ 7[?{wbq
return getHibernateTemplate "nEfk{ g
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().findByNamedQuery(query, parameter); Ryrvu 1 k
} P4S]bPIp
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publicList findByNamedQuery(finalString query, @is !VzE
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finalObject[] parameters){ ^J-\s_)"
return getHibernateTemplate SV0h'd(b
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().findByNamedQuery(query, parameters); 5ps7)]
} B6#^a
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publicList find(finalString query){ X1PXX!]lo[
return getHibernateTemplate().find oF0BBs$
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(query); FH}2wO~ _
} . +
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publicList find(finalString query, finalObject HXp$\%A)
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parameter){ I@/+=
return getHibernateTemplate().find yhSbX4Q
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