Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 AD,@,|A
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 >["Kd.ye
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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 >LCjtm\
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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 I>!|3ElT
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分页支持类: NrW [Q3E$
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java代码: 9/^d~ZO
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package com.javaeye.common.util; Mru~<:9
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import java.util.List; [CsM<:C
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publicclass PaginationSupport { ^1()W,B~w
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publicfinalstaticint PAGESIZE = 30; *pY/5? g
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privateint pageSize = PAGESIZE; D_zcOq9
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privateList items; bW}b<(y
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privateint totalCount; '! #On/
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privateint[] indexes = newint[0]; L)@`58Eil
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privateint startIndex = 0; 5R&x{jf$
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public PaginationSupport(List items, int -wJ
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totalCount){ '3IkPy1Uz
setPageSize(PAGESIZE); +?ws !LgF
setTotalCount(totalCount); 02;f2;I
setItems(items); S5zpUF=
setStartIndex(0); >cC Gx
} AEi WL.*.
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public PaginationSupport(List items, int -9hp+0 <
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totalCount, int startIndex){
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setPageSize(PAGESIZE); JI28O8
setTotalCount(totalCount); T2;v<(
setItems(items); r _{)?B
setStartIndex(startIndex); gK&5HTo
} V.O<|tl.
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public PaginationSupport(List items, int *##QXyyg
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totalCount, int pageSize, int startIndex){ GLbc/qs
setPageSize(pageSize); PmuEL@'^ U
setTotalCount(totalCount); Nv}U/$$S
setItems(items); 4f_ZY5=
setStartIndex(startIndex); IBn'iE[>
} d m/-}
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publicList getItems(){
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return items; (**-"o]HH
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publicvoid setItems(List items){ a>;3
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this.items = items; bn^mL~
} c+)36/; X
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publicint getPageSize(){ AQJ|^'%
return pageSize; p 02nd.R6
} `2
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publicvoid setPageSize(int pageSize){ :8\*)"^E
this.pageSize = pageSize; -52@%uB
} Mo:!jS~a(Z
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publicint getTotalCount(){ E.zYi7YUKK
return totalCount; Fyi?,,
} , u8ZS|9
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publicvoid setTotalCount(int totalCount){ S20 nk.x
if(totalCount > 0){ i4{ /
this.totalCount = totalCount; 2yi*eR
int count = totalCount / mTrI""Jsu;
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pageSize; x`j$9XN5
if(totalCount % pageSize > 0) ;Wfv+]n9
count++; YKs^%GO+
indexes = newint[count]; (F4d Fh
for(int i = 0; i < count; i++){ j:de}!wc
indexes = pageSize * $h|I7`
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} ~,M;+T}[r
}else{ b6?Xo/lJ.
this.totalCount = 0; jiw`i
} b& _i/n(
} ya*q; D
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publicint[] getIndexes(){ Ue>A
return indexes; qI4R`P"
} ]
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publicvoid setIndexes(int[] indexes){ fO^EMy\
this.indexes = indexes; 9^C!,A{u4
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publicint getStartIndex(){ .x-Z+Rs{g
return startIndex; f Dm}J
} ]>S$R&a
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publicvoid setStartIndex(int startIndex){ x/jN&;"/
if(totalCount <= 0) u=ds]XP@
this.startIndex = 0; 0F;(_2V-
elseif(startIndex >= totalCount) ytBxe]
this.startIndex = indexes ^JF_;~C
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[indexes.length - 1]; S#%JSQo:
elseif(startIndex < 0) 1+PNy d
this.startIndex = 0; Ph7(JV{
else{ Q+%m+ /Zq
this.startIndex = indexes v,x%^gv 0
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[startIndex / pageSize]; KSpC%_LC
} w]+BBGYQKb
} #*;fQ&p
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publicint getNextIndex(){ %&Q7;?
int nextIndex = getStartIndex() + PB3!;
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pageSize; Iy1Xn S*
if(nextIndex >= totalCount) L!}j3(I
return getStartIndex(); ]@<3 6ByM
else LXLIos55S
return nextIndex; {]_{BcK+
} (Ss77~W7
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publicint getPreviousIndex(){ cwD*>[j
int previousIndex = getStartIndex() - J/&*OC
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pageSize; XGup,7e9
if(previousIndex < 0) m=y,_Pz>U
return0;
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else v.^
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return previousIndex; q
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} 2Z9gOd<M~
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抽象业务类 cS ;=_%~
java代码: 9qO:K79|
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/** -N!soJ<
* Created on 2005-7-12 mt6uW+t/
*/ cM'[;u
package com.javaeye.common.business; d~bH!P
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import java.io.Serializable; 8_,wOkk_B
import java.util.List; yD
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import org.hibernate.Criteria; K.L+;
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import org.hibernate.HibernateException; aZCZ/
import org.hibernate.Session; (=/L#Yg_
import org.hibernate.criterion.DetachedCriteria; [-94=|S @
import org.hibernate.criterion.Projections; z8[|LF-dx
import kk./-G
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org.springframework.orm.hibernate3.HibernateCallback; Hw. @Le>
import {.8)gVBmA
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org.springframework.orm.hibernate3.support.HibernateDaoS zSufU2
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upport; #Lt+6sa]2@
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import com.javaeye.common.util.PaginationSupport; [#fqyg
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public abstract class AbstractManager extends Q6<Uuiw
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HibernateDaoSupport { >!.lr9(l
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privateboolean cacheQueries = false; ba:^zO^
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privateString queryCacheRegion; s|`)'
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publicvoid setCacheQueries(boolean n&&U9sf?
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cacheQueries){ Mp}NUQHE
this.cacheQueries = cacheQueries; tce8*:rNH
} $ =a$z"
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publicvoid setQueryCacheRegion(String JT_B@TO\
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queryCacheRegion){ 5!fW&OiY
this.queryCacheRegion = #u(,#(P'#
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queryCacheRegion; |W];v@b\y
} md
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publicvoid save(finalObject entity){ pC
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getHibernateTemplate().save(entity); `;GGuJb \
} )f&]H}
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publicvoid persist(finalObject entity){ OEi9
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getHibernateTemplate().save(entity); ?E@[~qq_
} ;itg>\p3
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publicvoid update(finalObject entity){ a$&6a
getHibernateTemplate().update(entity); xGk4KcxKs
} mSeNM
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publicvoid delete(finalObject entity){ h%e!f#
getHibernateTemplate().delete(entity); izo
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} iP_Xr~w
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publicObject load(finalClass entity, >1zzDd_
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finalSerializable id){ uS,$P34^oy
return getHibernateTemplate().load LRs;>O
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(entity, id); KK|Jach
} I/|n
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publicObject get(finalClass entity, !-~(*tn
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finalSerializable id){ Fowh3go
return getHibernateTemplate().get DJUtuex
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(entity, id); yK3z3"1M?
} -C<aB750O)
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publicList findAll(finalClass entity){ xc?<:h"
return getHibernateTemplate().find("from h (2k;M^s
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" + entity.getName()); ![%,pip2/&
} :LG%8Z{R
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publicList findByNamedQuery(finalString \$"Xr
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namedQuery){ n
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return getHibernateTemplate "-%H</
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().findByNamedQuery(namedQuery); nrBitu,
} ]+P&Y:
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publicList findByNamedQuery(finalString query, C"<@EMU9
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finalObject parameter){ (=9&"UH
return getHibernateTemplate sd%~pY}
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().findByNamedQuery(query, parameter); :_*Q
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} 566Qikw2
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publicList findByNamedQuery(finalString query, Ip0q&i<6
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finalObject[] parameters){ ev $eM
return getHibernateTemplate ig{5]wZ(
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().findByNamedQuery(query, parameters); 9K!='u`
} @AOiZOH
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publicList find(finalString query){ k9n93I|Cm
return getHibernateTemplate().find LNkyV*TI
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(query); C#>C59
} nKdLhCN'=
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publicList find(finalString query, finalObject c+=&5=i[3
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parameter){ }JD(e}8$!
return getHibernateTemplate().find e=2D^G#qE
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(query, parameter); sXu]k#I^"
} K@m^QioMj
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public PaginationSupport findPageByCriteria uZ+<
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(final DetachedCriteria detachedCriteria){ 0*)79Sz
return findPageByCriteria ~"k'T9QBY
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); z( wXs&z;
} !r<7]nwV
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public PaginationSupport findPageByCriteria f@0`,
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(final DetachedCriteria detachedCriteria, finalint =R05H2hs
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startIndex){ >EY0-B
return findPageByCriteria ?D_zAh?pW
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(detachedCriteria, PaginationSupport.PAGESIZE, Gsb]e
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startIndex); 6{M.S}.^
} om1 /9
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public PaginationSupport findPageByCriteria i+;EuHf
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