Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 D<XRu4^;
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 9Kd:7@U
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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 qz/d6-0"
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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$W=5B>SO
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分页支持类: 9\D 0mjn=l
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java代码: W0>fu>
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package com.javaeye.common.util; $>y
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import java.util.List; dX:#KdK
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publicclass PaginationSupport { TdH~sz
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publicfinalstaticint PAGESIZE = 30; h9L/.>CX
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privateint pageSize = PAGESIZE; >On"BP# U
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privateList items; v&*}O
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privateint totalCount; 9,zM.g9Qv
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privateint[] indexes = newint[0]; 8cyC\Rs
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privateint startIndex = 0; Fq9>t/Zj
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public PaginationSupport(List items, int
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totalCount){ 9K`uGu
setPageSize(PAGESIZE); !~~j&+hK\
setTotalCount(totalCount); gC qQ~lWZ
setItems(items); Jf=$h20x
setStartIndex(0); CuD ^@
} GBsM?A:
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public PaginationSupport(List items, int *X4$'LSx1
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totalCount, int startIndex){ =q-HR+
setPageSize(PAGESIZE); k_<8SG+`
setTotalCount(totalCount); #XlE_XD
setItems(items); `2Oh0{x0*O
setStartIndex(startIndex); @UidQX"b
} {<3>^ o|"
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public PaginationSupport(List items, int Yi+~}YP.E(
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totalCount, int pageSize, int startIndex){ /4Lmu+G4
setPageSize(pageSize); ?nAKB5=
setTotalCount(totalCount); 3qc o2{nz
setItems(items); t,yzqn
setStartIndex(startIndex); 2i3& 3oz]O
} pD>^Dfd
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publicList getItems(){ ?hQ,'M2
return items; rX<gcntv
} .5~W3v
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publicvoid setItems(List items){ _("&jfn
this.items = items; ?w[M{
} YQ+Kl[ec
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publicint getPageSize(){ =_L
return pageSize; _~ipO1*
} U@$=0*
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publicvoid setPageSize(int pageSize){ >%D=#}8l@
this.pageSize = pageSize; _Vq7Gxy$R
} ~?c}=XL-
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publicint getTotalCount(){ p3NTI /-
return totalCount; -)Y?1w
} `(9B(&t^,
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publicvoid setTotalCount(int totalCount){ 6/#5TdJA
if(totalCount > 0){ $Di2BA4Di
this.totalCount = totalCount; Y%V|M0 0`
int count = totalCount / d">Ya !W
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pageSize; DgLSDKO!
if(totalCount % pageSize > 0) YTco;5/
count++; ZREAEGi{
indexes = newint[count]; H5N(MihT
for(int i = 0; i < count; i++){ dIo|i,-
indexes = pageSize * nAp7X-t
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} Mlpq2I_x
}else{ _5nQe
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this.totalCount = 0; "F+Wo&
} "Jp6EL%
} 2Z-BZu K6p
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publicint[] getIndexes(){ CDcs~PR@B
return indexes; h ,@x5q>g
} ~%Ws"1
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publicvoid setIndexes(int[] indexes){ 3\,TI`^C
this.indexes = indexes; L?^C\g6u]
} 8<g_JW[%
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publicint getStartIndex(){ hfvs'.
return startIndex; _e_]$G/TM
} ?nFT51t/4
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publicvoid setStartIndex(int startIndex){ P-~Avb
if(totalCount <= 0) *TuoC5
this.startIndex = 0; azB~>#H~
elseif(startIndex >= totalCount) 9tS&$-
this.startIndex = indexes ]T+.kC
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[indexes.length - 1];
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elseif(startIndex < 0) `,(1'
this.startIndex = 0; %;9eh'
else{ ZUyM:$
this.startIndex = indexes &-+&`h|s
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[startIndex / pageSize]; jkNZv. )p
} XEZ6%Q_
} $Mx.8FC +
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publicint getNextIndex(){ \]J"e%
int nextIndex = getStartIndex() + pAmTwe
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pageSize; e7L;{+XI
if(nextIndex >= totalCount) LFSOHJj
return getStartIndex(); su=.4JcK
else 9GZF39w u
return nextIndex; d1j v>tu
} /]xd[^
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publicint getPreviousIndex(){ Yb =8\<;
int previousIndex = getStartIndex() - Pr<?E[
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pageSize; {uj9fE,)
if(previousIndex < 0) g{$&j*Q9
return0; (oJ#`k:&n
else 2
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return previousIndex; j7-#">YL
} ]-.Q9cjc$q
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} .: 7h=neEW
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抽象业务类 9Zrn(D
java代码: *8XGo
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/** I)B2Z(<Q
* Created on 2005-7-12 9I RE@c
*/ #8/Z)-G
package com.javaeye.common.business; dy`~%lX?
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import java.io.Serializable; gdC=SFb b
import java.util.List; "Pys3=h
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import org.hibernate.Criteria; C1G Wi4)
import org.hibernate.HibernateException; &2\.6rb.
import org.hibernate.Session; 2N,*S
import org.hibernate.criterion.DetachedCriteria; 0\Oeo8<7)~
import org.hibernate.criterion.Projections; R1q04Zj{2
import gieX`}
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org.springframework.orm.hibernate3.HibernateCallback; *gT
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import n(o
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org.springframework.orm.hibernate3.support.HibernateDaoS 7SqsVq`[~
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upport; -=qmYf
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import com.javaeye.common.util.PaginationSupport; |R[m&uOib
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public abstract class AbstractManager extends cL
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HibernateDaoSupport { vOP[ND=T
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privateboolean cacheQueries = false; OQsH,'
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privateString queryCacheRegion; RZ.5:v6
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publicvoid setCacheQueries(boolean JqZ%*^O
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cacheQueries){ 9SFiL#1
this.cacheQueries = cacheQueries; %Bo Jt-v
} o4Ba l^=[
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publicvoid setQueryCacheRegion(String TM RXl.1
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queryCacheRegion){ D>1Dao
this.queryCacheRegion = ! 9N%=6\
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queryCacheRegion; >3Y&jsh<
} Je*gMq:D
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publicvoid save(finalObject entity){ [,e_2<
getHibernateTemplate().save(entity); 4i19HD_
} -FPl",f=r
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publicvoid persist(finalObject entity){ PRUGUHY
getHibernateTemplate().save(entity); Cv=0&S.
} lubS{3<
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publicvoid update(finalObject entity){ w5nRgdboy!
getHibernateTemplate().update(entity); GS^4tmc
} l-npz)EM
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publicvoid delete(finalObject entity){ 2-CK:)n/#
getHibernateTemplate().delete(entity); 2]'ozs$|v
} w])Sz*J
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publicObject load(finalClass entity, KG?]MVXA
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finalSerializable id){ >ylVES/V
return getHibernateTemplate().load >9klh-f
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(entity, id); Q7s1M&K
} {%$=^XO
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publicObject get(finalClass entity, %SE g(<