Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 63-`3R?;
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ZaXK=%z
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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 >/$Q:92T
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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 |Q.?<T:wt=
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分页支持类: $ZwsTV]x
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java代码: KC8A22
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package com.javaeye.common.util; tty6
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import java.util.List; #r:J,D6*
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publicclass PaginationSupport { \p [!@d^
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publicfinalstaticint PAGESIZE = 30; 2ORWdR.b
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privateint pageSize = PAGESIZE; 49HtI9@
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privateList items; "wexG]R=5
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privateint totalCount; P|_?{1eO2
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privateint[] indexes = newint[0]; U{eC^yjt"o
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privateint startIndex = 0; ~g>15b3
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public PaginationSupport(List items, int *~2jP;$
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totalCount){ -^\k+4;
setPageSize(PAGESIZE); pB?a5jpA
setTotalCount(totalCount); sOU_j4M{
setItems(items); >JCSOI
setStartIndex(0); OdwSNG
} @RbAC*Y]g
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public PaginationSupport(List items, int 988aF/c
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totalCount, int startIndex){ ((;9%F:/$
setPageSize(PAGESIZE); --",}%-
setTotalCount(totalCount); [J-r*t"!
setItems(items); gjyg`%
setStartIndex(startIndex); {vA;#6B|
} ~]c^v'k
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public PaginationSupport(List items, int W+Gu\=s%O
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totalCount, int pageSize, int startIndex){ Nk}Hvg*(
setPageSize(pageSize); ;$[o7Qm5r
setTotalCount(totalCount); VJHHC.Kz
setItems(items); iWQBo>x
setStartIndex(startIndex); 3S'V>:
} Ob0=ZW`+&
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publicList getItems(){ &~||<0m
return items; >fs-_>1d
} Q
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publicvoid setItems(List items){ ecf<(Vl}
this.items = items; a-i#?hld
} Z4hP
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publicint getPageSize(){ Mt@K01MI%
return pageSize; &sx/qS#,VL
} WMh'<'wN_
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publicvoid setPageSize(int pageSize){ w[4SuD
this.pageSize = pageSize; R&PQ[ Xc
} a7#Eyw^H{
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publicint getTotalCount(){ ,u~\$Az6
return totalCount; Wc`Vcn1
} +".&A#wU
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publicvoid setTotalCount(int totalCount){ YhR?*Di
if(totalCount > 0){ 7^|3TTK
this.totalCount = totalCount; NS b<
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int count = totalCount / s#*
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pageSize; r=&PUT+vt
if(totalCount % pageSize > 0) 0b*a2_|8k
count++; Z][?'^`^!
indexes = newint[count]; n!HFHy2
for(int i = 0; i < count; i++){ vc^PXjX
indexes = pageSize * 9Cf^Q3)5o
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} m{+lG*
}else{ ax7 M
this.totalCount = 0; A=h`Z^8\B
} (7Y :3
} .fD k5uo
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publicint[] getIndexes(){ 3P-#NL
return indexes; ' P-K}Y
} O]{H2&k@
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publicvoid setIndexes(int[] indexes){ BKvF,f/g
this.indexes = indexes; wJ IJPYTK
} s/ZOA[Yux
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publicint getStartIndex(){ OtQKDpJq
return startIndex; UK&E#i
} G ROl9xp2
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publicvoid setStartIndex(int startIndex){ ]]d@jj
if(totalCount <= 0) {'r(P&
this.startIndex = 0; 8oA6'%.e
elseif(startIndex >= totalCount) WNL3+
this.startIndex = indexes }[i35f[w
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[indexes.length - 1]; \V:
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elseif(startIndex < 0) {MYlW0)~
this.startIndex = 0; 4eIu@
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else{ 6e~+@S
this.startIndex = indexes j&8 ~X2?*
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[startIndex / pageSize]; #NL1N_B
} EidIi"sr
} =4Ex'
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publicint getNextIndex(){ h)A+5^:^
int nextIndex = getStartIndex() + Th,2gX9
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pageSize; >O\-\L
if(nextIndex >= totalCount) 9=JU&/!
return getStartIndex(); P<2yCovn`
else r-Dcc;+=Q
return nextIndex; !uHI5k,f
} #UXmTrZ.
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publicint getPreviousIndex(){ 4r5,kOFWb
int previousIndex = getStartIndex() - typ*.j[q
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pageSize;
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if(previousIndex < 0) ^OA}#k
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return0; );Gt!]p`;
else }^LcKV
return previousIndex; &+sO"j4<?r
} WtlIrdc
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} " _q5\]z\O
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抽象业务类 5~.\rcr%
java代码: D=dY4WwG
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/** X.UIFcK^
* Created on 2005-7-12 d3n TJ X
*/ gNZ^TeT
package com.javaeye.common.business; IFv2S|
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import java.io.Serializable; &"^A
import java.util.List; t-E'foYfr`
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import org.hibernate.Criteria; MGmtA(
import org.hibernate.HibernateException; K7_)!=DcX
import org.hibernate.Session; yyA/x,
import org.hibernate.criterion.DetachedCriteria; 5h20\b?=$
import org.hibernate.criterion.Projections; ;j/ur\37
import n+!.0d}6
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org.springframework.orm.hibernate3.HibernateCallback; CZ&TUE|:DA
import 9)4N2=
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org.springframework.orm.hibernate3.support.HibernateDaoS S2<(n,"
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upport; y*7ht{B
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import com.javaeye.common.util.PaginationSupport; gV`:eNo*
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public abstract class AbstractManager extends F;~ #\X
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HibernateDaoSupport { 01w=;Q
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privateboolean cacheQueries = false; nt5 ~"8
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privateString queryCacheRegion; }]n&" =Zk-
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publicvoid setCacheQueries(boolean \8t g7Sdq
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cacheQueries){ [e&$4l IS
this.cacheQueries = cacheQueries; <o]tW4\(R
} BtqJkdK!;1
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publicvoid setQueryCacheRegion(String '2.F-~
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queryCacheRegion){ r/{VL3}F_e
this.queryCacheRegion = "3hw]`a}
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queryCacheRegion; @Sv
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} ;^
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publicvoid save(finalObject entity){ 6DR8(j)=[%
getHibernateTemplate().save(entity); 2?}(
} +T4<