Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ;bE6Y]"Rz
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 =U2n"du
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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 x$DJ
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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 ]5/U}Um
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分页支持类: e]h'
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java代码: d.oFlT
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package com.javaeye.common.util; b0 `9wn
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import java.util.List; y/eX(l<{
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publicclass PaginationSupport { 1s[-2^D+EM
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publicfinalstaticint PAGESIZE = 30; !Jl0Eu
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privateint pageSize = PAGESIZE; ~W{h-z%q
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privateList items; ^?[<!VBI
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privateint totalCount; =A6O}0z
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privateint[] indexes = newint[0]; q.{/{9
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privateint startIndex = 0; +Q0-jS#d
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public PaginationSupport(List items, int 2tm-:CPG
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totalCount){ #!# X3j
setPageSize(PAGESIZE); Gi4dgMVei
setTotalCount(totalCount); Wb4{*~
setItems(items); 5>Yd\(`K
setStartIndex(0); gi@ji-10
} q.km>XRk~
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public PaginationSupport(List items, int Cbs4`D,
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totalCount, int startIndex){ ld:alEo
setPageSize(PAGESIZE); ~ O=| v/]
setTotalCount(totalCount); )^f
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setItems(items); ~(^*?(Z
setStartIndex(startIndex); G>>u#>0
} u@u.N2H.%
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public PaginationSupport(List items, int TFDCo_>o
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totalCount, int pageSize, int startIndex){ wNhR(M7
setPageSize(pageSize); rss.F3dK
setTotalCount(totalCount); w*}yw"gP*0
setItems(items); dU^<7 K:S
setStartIndex(startIndex); ATp 6-
} 4 xzJql
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publicList getItems(){ q'@Ei4
return items; eE`1;13;
} x`vs-Y:P
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publicvoid setItems(List items){ ~7WXjVZ
this.items = items; #ic 2ofI
} ]Ja8i%LjOG
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publicint getPageSize(){ e`M]ZGrr
return pageSize; H<7DcwXv
} Ilu`b|%D
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publicvoid setPageSize(int pageSize){ RTBBb:eX
this.pageSize = pageSize; @Qjl`SL%O^
} slvs oN@
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publicint getTotalCount(){ VD3MJ 8!w
return totalCount; yXo0z_ G
} l~!fQ$~
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publicvoid setTotalCount(int totalCount){ )-:eQ{st`
if(totalCount > 0){ ;VlZd*M?
this.totalCount = totalCount; lc?mKW9
int count = totalCount / #IGoz|m
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pageSize; UAXF64w{
if(totalCount % pageSize > 0) &W<>^C2v
count++; Bd~cY/M
indexes = newint[count]; 4S0++Hp4
for(int i = 0; i < count; i++){ ^@*zH?Rx{
indexes = pageSize * RR"WO
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} pkN:D+gS
}else{ skDk/-*R
this.totalCount = 0; v&b.Q:h*'
} ~73i^3yf
} <kXV1@>
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publicint[] getIndexes(){ !eAdm
return indexes; 2]aZe4H.
} x+y!P
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publicvoid setIndexes(int[] indexes){ H(G^O&ppdB
this.indexes = indexes; :{i$2\DH6
} bqQO E4;
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publicint getStartIndex(){ y.*=Ww+
return startIndex; kuj12
} KjwY'aYwr:
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publicvoid setStartIndex(int startIndex){ -Mi}yi
if(totalCount <= 0) Op/79]$
this.startIndex = 0; j
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elseif(startIndex >= totalCount) <A -(&+
this.startIndex = indexes ;?L!1wklA
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[indexes.length - 1]; $]H=
elseif(startIndex < 0) hLytKPgt
this.startIndex = 0; k Kp6
else{ bxhg*A
this.startIndex = indexes _L4<^Etfm
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[startIndex / pageSize]; FSU%?PxO
} 0ve`
} ( ztim
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publicint getNextIndex(){ wsJ%*
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int nextIndex = getStartIndex() + U%^eIXV|
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pageSize; 6_%]\37_Z
if(nextIndex >= totalCount) 2l)9Lz=;L
return getStartIndex(); gVnwsE
else 'Uko^R)(
return nextIndex; %0NkIQ`C
} 6@?aVM~
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publicint getPreviousIndex(){ t8DL9RW'
int previousIndex = getStartIndex() - &>W (l.
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pageSize; xMNNXPz(
if(previousIndex < 0) vcw>v={x
return0; +dCDM1{_a
else (aJP: ^
return previousIndex; :>P4L,Da]
} 8Q^6ibE
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} 5oU`[&=Ob
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抽象业务类 vnC<*k4&v
java代码: RG l=7^M
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/** O}K_l1
* Created on 2005-7-12 "?.'{,Q
*/ Q%& _On
package com.javaeye.common.business; @e!Zc3
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import java.io.Serializable; Sa;<B:|
import java.util.List; t;.^K\S4
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import org.hibernate.Criteria; UCn*UX
import org.hibernate.HibernateException; h"%|\o+3
import org.hibernate.Session; yV:EK{E
import org.hibernate.criterion.DetachedCriteria; %XP_\lu]
import org.hibernate.criterion.Projections; D!bKm[T
import GJ1;\:cQq
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org.springframework.orm.hibernate3.HibernateCallback; KE/-VjZu
import ?$|uT
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org.springframework.orm.hibernate3.support.HibernateDaoS gDQkn {T.%
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upport; eg"=H50
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import com.javaeye.common.util.PaginationSupport; bA@
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public abstract class AbstractManager extends RzA2*]%a
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HibernateDaoSupport {
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privateboolean cacheQueries = false; -{X<*P4p
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privateString queryCacheRegion; _tWJXv~;
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publicvoid setCacheQueries(boolean b8J@K"
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cacheQueries){ vk
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this.cacheQueries = cacheQueries; 1)TK01R8
} x9 &-(kBU
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publicvoid setQueryCacheRegion(String yicO!:bM
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queryCacheRegion){ -O|&