Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 SmtH2%y I
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 4>,
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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 QtX ->6P>
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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 m_St"`6 .
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分页支持类: 0gt/JI($
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java代码: 27Lya!/
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package com.javaeye.common.util; ~ae68&L6
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import java.util.List; p6jR,m8S
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publicclass PaginationSupport { D0-C:gz
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publicfinalstaticint PAGESIZE = 30; =3& WH0
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privateint pageSize = PAGESIZE; _c%~\LOk
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privateList items; U);
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privateint totalCount; O9g{XhMv>f
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privateint[] indexes = newint[0]; xu_Tocvop
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privateint startIndex = 0; kQ4%J,7e4
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public PaginationSupport(List items, int ( XE`,#
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totalCount){ {;z3$/JB
setPageSize(PAGESIZE); OlV>zam
setTotalCount(totalCount); N%>/
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setItems(items); a0AIq44
setStartIndex(0); 0w(<pNA
} hJaqW'S
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public PaginationSupport(List items, int 5"@<7/2qI
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totalCount, int startIndex){ /i$&89yod
setPageSize(PAGESIZE); NO6. qWl
setTotalCount(totalCount); )u[2TI1
setItems(items); abI[J]T9G
setStartIndex(startIndex); o5zth^p[
} {!E<hQ2<$9
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public PaginationSupport(List items, int UpB7hA
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totalCount, int pageSize, int startIndex){ M*0&3Y
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setPageSize(pageSize); J }JT%SW
setTotalCount(totalCount); 1R,n[`}h
setItems(items); %OW[rbE.
setStartIndex(startIndex); MR8-xO'w
} I ][8[UZ
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publicList getItems(){ b_][Jye&P
return items; /&ph-4\i
} A$|> Jt
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publicvoid setItems(List items){ MA"iM+Ar
this.items = items; ]>:%:-d6
} s31^9a
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publicint getPageSize(){ qf7.Sh
return pageSize; C'mmo&Pd
} V ;>{-p
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publicvoid setPageSize(int pageSize){ tT'd]
this.pageSize = pageSize; kv) LH{
} B#q5Ut
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publicint getTotalCount(){ ,Hp9Gkm8I/
return totalCount; VX;u54hS
} mflI> J=g
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publicvoid setTotalCount(int totalCount){ R2M,VK?Wx
if(totalCount > 0){ 8f29Hj+
this.totalCount = totalCount; E1VCm[j2
int count = totalCount / J"[OH,/_
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pageSize; =XoNk1
if(totalCount % pageSize > 0) :G}tvFcOAF
count++; @#o$~'my
indexes = newint[count]; eIg2m <9u
for(int i = 0; i < count; i++){ @W^g(I(w
indexes = pageSize * b6]M}ixK
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} 3ON]c13
}else{ v[lytX4)
this.totalCount = 0; BNzL+"W
} n1$##=wK]
} R HF;AX n
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publicint[] getIndexes(){ \ iP[iE=
return indexes; zBc7bbK
} s"a*S\a;b
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publicvoid setIndexes(int[] indexes){ XY%8yII6
this.indexes = indexes; iUl{_vb
} XFBk:~}sI
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publicint getStartIndex(){ YQ?|Vb
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return startIndex; gg8T],s1!a
} dQ^k-
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publicvoid setStartIndex(int startIndex){ JgK?j&!hs:
if(totalCount <= 0) s]B^Sz=
this.startIndex = 0; ',O@0L]L
elseif(startIndex >= totalCount) -j<UhW
this.startIndex = indexes Z{ p;J^:
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[indexes.length - 1]; <{cPa\
elseif(startIndex < 0) u1<xt1K
this.startIndex = 0; $_)f|\s
else{ <[pU rJfTr
this.startIndex = indexes Xe+Hez,
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[startIndex / pageSize]; e3[QM
} Ufo-AeQo
} V=S`%1dLN
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publicint getNextIndex(){ j^64 :3
int nextIndex = getStartIndex() + t+?\4+!<
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pageSize; }]?RngTt
if(nextIndex >= totalCount) <F!:dyl
return getStartIndex(); 1BWuFYB
else +{#BQbx6
return nextIndex; Q'\jm=k
} Rx'7tff%I
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publicint getPreviousIndex(){ fSun{?{
int previousIndex = getStartIndex() - |-e=P9,
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pageSize; VD=$:F]
if(previousIndex < 0) *w%;$\^
return0; 4&&j7$aV
else c 9ghR0WM
return previousIndex; xw?G?(WO
} t zV"|s=o
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} neZ_TT/3K
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} g
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抽象业务类 pXQ&2s$
java代码: ^Jkj/n'
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/** Ezml LFp.
* Created on 2005-7-12 Ni0lj:
*/ Riw>cVi~
package com.javaeye.common.business; 1hMk\ -3S
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import java.io.Serializable; *tP,Ol
import java.util.List; JLG5`{
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import org.hibernate.Criteria; 16aa IK
import org.hibernate.HibernateException; 95(VY)_6#A
import org.hibernate.Session; N;D+]_;0|
import org.hibernate.criterion.DetachedCriteria; Sa<R8X'J
import org.hibernate.criterion.Projections; pF8'S{y
import vJcvyz#%1
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org.springframework.orm.hibernate3.HibernateCallback; 1yE~#KpH
import |a"(Ds2U
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org.springframework.orm.hibernate3.support.HibernateDaoS d&U;rMEv
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upport; 89 lPeFQ`
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import com.javaeye.common.util.PaginationSupport; pcEB-boI9
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public abstract class AbstractManager extends LB M:>d5
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HibernateDaoSupport { 9GQTe1[t4
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privateboolean cacheQueries = false; YE-kdzff
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privateString queryCacheRegion; E3KPjK
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publicvoid setCacheQueries(boolean +~[19'GH
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cacheQueries){ L' )(Zn1
this.cacheQueries = cacheQueries; <LLSUk/
} i?|SC=
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publicvoid setQueryCacheRegion(String \tQi7yj4
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queryCacheRegion){ @D7cv"
this.queryCacheRegion = y24 0 +;a
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queryCacheRegion; w}2yi#E[
} dvxH:,
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publicvoid save(finalObject entity){ kPxrI=
getHibernateTemplate().save(entity); {fS/ZG"5<t
} Z> &PM06
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publicvoid persist(finalObject entity){ JEAqSZak#
getHibernateTemplate().save(entity); y[$e]N
} RSkpf94`
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publicvoid update(finalObject entity){ P|6m%y
getHibernateTemplate().update(entity); i\PN
} )^r4|WYyt
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publicvoid delete(finalObject entity){ <Z0Tz6/j,
getHibernateTemplate().delete(entity); 2xjS;lpw
} 2Nj0 Hqjq
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publicObject load(finalClass entity, *.K}`89T
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finalSerializable id){ UkGUxQ,GU
return getHibernateTemplate().load #6YNgJNk
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(entity, id); !WIL|\jbh
} lvFHr}W
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publicObject get(finalClass entity, QP qa\87
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finalSerializable id){ *F9uv)[kz
return getHibernateTemplate().get 1Ju{IEV
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(entity, id); 6DExsB~@
} eH6#'M4+\
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publicList findAll(finalClass entity){ &