Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 $iHoOYx]<
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 =qX*]
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 ,R}Z=w#
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 [TEcg^
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分页支持类: ~bGnq,
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java代码: T3rn+BxF 7
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package com.javaeye.common.util; )-q\aX$])
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import java.util.List; iokPmV
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publicclass PaginationSupport { gn`zy9PU
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publicfinalstaticint PAGESIZE = 30; C$K+=jT
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privateint pageSize = PAGESIZE; agW9Go_F[
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privateList items; !&JiNn('
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privateint totalCount; *:j-zrwu&
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privateint[] indexes = newint[0]; :A#+=O0\z
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privateint startIndex = 0; +;6)
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public PaginationSupport(List items, int t9Vb~ Ubdb
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totalCount){ #s{aulx
setPageSize(PAGESIZE); (Com,
setTotalCount(totalCount); 1 KB7yG-#6
setItems(items); #B}Qt5w
setStartIndex(0); Jh^8xI,`C
} [-]A^?yBM
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public PaginationSupport(List items, int e{JVXc[D
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totalCount, int startIndex){ :])JaS^
setPageSize(PAGESIZE); > [8#hSk
setTotalCount(totalCount); S\b K+
setItems(items); niQcvnT4b
setStartIndex(startIndex); *;P2+cE>H3
} /.2 qWQH
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public PaginationSupport(List items, int _ .!aBy%xf
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totalCount, int pageSize, int startIndex){ /sV?JV[t
setPageSize(pageSize); @`Wt4<
setTotalCount(totalCount); 6W:1>,xS
setItems(items); #!L%J<MX
setStartIndex(startIndex);
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} W]@6=OpH
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publicList getItems(){ jiq2 x\\!
return items; Wz5=(<{S
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publicvoid setItems(List items){ wB2}uk7
this.items = items; =+4 _j
} Hh@2 m\HA
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publicint getPageSize(){ }>,CUz
return pageSize; .8x@IWJD
} -tMA
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publicvoid setPageSize(int pageSize){ *7_@7=W,
this.pageSize = pageSize; e z+yP,.#
} NFV_+{X\
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publicint getTotalCount(){ 8J):\jAZ6
return totalCount; *V -ds8AQ
} `$M
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publicvoid setTotalCount(int totalCount){ WDvV
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if(totalCount > 0){ Pfk{ =y
this.totalCount = totalCount; N"K\ick6J
int count = totalCount / QheDF7'z
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pageSize; &8afl"_~
if(totalCount % pageSize > 0) s_v}=C^
count++; @'Q%Jc(
indexes = newint[count]; e lay
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for(int i = 0; i < count; i++){ cP J7E
indexes = pageSize * T1bFxim#b
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} `^zQ$au'u
}else{ FTbtAlqh<
this.totalCount = 0; ?l>e75V%w
} Y!aLf[x]
} 7g8B'ex J
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publicint[] getIndexes(){ t%:G|n Sz
return indexes; #.b^E3#+
} >R#9\/s
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publicvoid setIndexes(int[] indexes){ MorW\7-}
this.indexes = indexes; I X?@~'
} egbb1+tY
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publicint getStartIndex(){ \wFhTJY
return startIndex; C-r."L
} K]9tc)
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publicvoid setStartIndex(int startIndex){ !bieo'c
if(totalCount <= 0) K: 4P;ApI
this.startIndex = 0; p#z;cjfSt
elseif(startIndex >= totalCount) r.9 $y/5
this.startIndex = indexes 8>m1UO Nr
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[indexes.length - 1]; o3fR3P%$
elseif(startIndex < 0)
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this.startIndex = 0; 1aVgwAI
else{ ThbP;CzI#
this.startIndex = indexes (%.</|u
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[startIndex / pageSize]; F-$Kv-f
} }~V,_Fv
} Xa>}4j.
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publicint getNextIndex(){ f7S^yA[[
int nextIndex = getStartIndex() + L+u OBW_
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pageSize; 5vYsA1Z
if(nextIndex >= totalCount) 3/:LYvM<
return getStartIndex(); >d'EInSF
else qq/_yt
return nextIndex; jzQ9zy_
} ^971<B(v
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publicint getPreviousIndex(){ o%$<LaQG5
int previousIndex = getStartIndex() - = >P_mPP=
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pageSize; )\(lg*?:
if(previousIndex < 0) 6NU8HJp
return0; )ynA:LXx
else 2YaTT& J
return previousIndex; GCZu<,
} t;oT {Hge
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抽象业务类 ZWov_
java代码: ^Kb9@lz/
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/** EUJ1RhajF
* Created on 2005-7-12 .QNjeMu.
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package com.javaeye.common.business; ,>:XE@xcp
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import java.io.Serializable; buc,M@>
import java.util.List; F]hx
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import org.hibernate.Criteria; ^
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import org.hibernate.HibernateException; S83]O!w0
import org.hibernate.Session; *;>V2!N=U
import org.hibernate.criterion.DetachedCriteria; nomu$|I
import org.hibernate.criterion.Projections; InAU\! ew
import yp( ?1
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org.springframework.orm.hibernate3.HibernateCallback; XCKY
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import cw*(L5bu
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org.springframework.orm.hibernate3.support.HibernateDaoS |TC3*Y
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upport; f_^ix
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import com.javaeye.common.util.PaginationSupport; *2w_oKE'+5
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public abstract class AbstractManager extends &C
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HibernateDaoSupport { 1v>
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privateboolean cacheQueries = false; Q=)"om
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privateString queryCacheRegion; 1\M"`L/
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publicvoid setCacheQueries(boolean
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cacheQueries){ >DSNKU+j
this.cacheQueries = cacheQueries; qz-#LZFTR
} &':UlzG
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publicvoid setQueryCacheRegion(String t;Fbt("]:
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queryCacheRegion){ @n5;|`)\
this.queryCacheRegion = *[XN.sb8E
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queryCacheRegion; Fh*q]1F
} XHwZ+=v
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publicvoid save(finalObject entity){ Pu/-Qpqh
getHibernateTemplate().save(entity); 1]a*Oer}
} :)^#
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publicvoid persist(finalObject entity){ ,f-T1v"
getHibernateTemplate().save(entity); ]6?c8/M
} QZ:]8MHl]
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