Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 E^PB)D(.
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 6zkaOA46V
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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 dx]>(e@(t{
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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 g}i61(
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分页支持类: .hiSw
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java代码: 0c&+|>!
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package com.javaeye.common.util; d _
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import java.util.List; p<2,=*2
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publicclass PaginationSupport { $(9U @N9E
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publicfinalstaticint PAGESIZE = 30; A
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privateint pageSize = PAGESIZE; !BI;C(,RL
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privateList items; yVc(`,tZ(
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privateint totalCount; *VeRVaBl
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privateint[] indexes = newint[0]; d3Rw!slIq
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privateint startIndex = 0; Je@v8{][|
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public PaginationSupport(List items, int fnY.ao1-s[
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totalCount){ 8Y3I0S
setPageSize(PAGESIZE); y]imZ4{/
setTotalCount(totalCount); +RXoi2"-q@
setItems(items); Wm|lSisY
setStartIndex(0); eFAnFJ][L
} "j-CZ\]U|
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public PaginationSupport(List items, int HThcn1u~^b
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totalCount, int startIndex){ _|]x2xb)
setPageSize(PAGESIZE); m,S{p<-h
setTotalCount(totalCount); .ByuN
setItems(items); 2%>FR4a
setStartIndex(startIndex); oE~RySX
} OTp]Xe/
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public PaginationSupport(List items, int j4b4!^fV
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totalCount, int pageSize, int startIndex){
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setPageSize(pageSize); IAEAhqp
setTotalCount(totalCount); nie% eC&U
setItems(items); Wf<LR3
setStartIndex(startIndex); fLVAKn
} ^GX)Z~
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publicList getItems(){ a>)f=uS
return items; w:l"\Tm
} W`&hp6Jq
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publicvoid setItems(List items){ 6,uX,X5
this.items = items; ?8 {"x8W;
} <X5fUU"+U
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publicint getPageSize(){ h1{3njdr
return pageSize; ~v83pu1!2s
} iX\X>W$P
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publicvoid setPageSize(int pageSize){ !a<ng&H^U
this.pageSize = pageSize; H.2QKws^F
} J$!iq|
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publicint getTotalCount(){ ;GhNKPY
return totalCount; 7)k\{&+P
} km40qO@3
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publicvoid setTotalCount(int totalCount){ F>cv<l
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if(totalCount > 0){ @K]|K]cby
this.totalCount = totalCount; *:NQ&y*uj
int count = totalCount / p^_yU_
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pageSize; JG,%qFlk
if(totalCount % pageSize > 0) +{UcspqM
count++; 9mFE?J
indexes = newint[count]; 63A.@mL
for(int i = 0; i < count; i++){ e]tDy0@
indexes = pageSize * h@h! ,;
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} `KQvJjA6
}else{ 4H-'Dr=G
this.totalCount = 0; Tqk\XILG N
} iyp=lLk
} yA>nli=
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publicint[] getIndexes(){ 4{l,
return indexes; 3t6LT
} 9I/N4sou
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publicvoid setIndexes(int[] indexes){ t_suF$
this.indexes = indexes; Ki~1qu:
} yOg+iFTr
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publicint getStartIndex(){ ,u
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return startIndex; AFfAtu
} 0AV c
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publicvoid setStartIndex(int startIndex){ Z:7fV5b(
if(totalCount <= 0) TuYCR>P[
this.startIndex = 0; #!m.!?
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elseif(startIndex >= totalCount) (3&?w y_l
this.startIndex = indexes ;Q&5,<
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[indexes.length - 1]; -Vhw^T1iV
elseif(startIndex < 0) &=k,?TJO>
this.startIndex = 0; =kqt
else{ :Lug7bUVD
this.startIndex = indexes
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[startIndex / pageSize]; evJ.<{M
} vA.MRu#
} Zr,VR-kW+
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publicint getNextIndex(){ 27<
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int nextIndex = getStartIndex() + Uv~QUL3>
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pageSize; |B2+{@R
if(nextIndex >= totalCount) Z*2Vpnqh\
return getStartIndex(); TvQo?
else qcGK2Qx
return nextIndex; C{XmVc.
} f>Jr|#k
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publicint getPreviousIndex(){ 50C
int previousIndex = getStartIndex() -
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pageSize; -[DOe?T
if(previousIndex < 0) "v4B5:bmqW
return0; 5Zva:
else .eP.&
return previousIndex; g|Fn7]G
} Dl8;$~
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} wIBO
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抽象业务类 % -e 82J1
java代码: ~**.|%Kc
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/** aCLq k'
* Created on 2005-7-12 mju>>\9
*/ K>l~SDcZ3
package com.javaeye.common.business; 78H'ax9m
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import java.io.Serializable; qc~iQSI
import java.util.List;
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import org.hibernate.Criteria; CoAvSw
import org.hibernate.HibernateException; Km6YP!i
import org.hibernate.Session; .Twk {p
import org.hibernate.criterion.DetachedCriteria; R#8L\1l
import org.hibernate.criterion.Projections; Y]u+\y~
import [bNx^VP*
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org.springframework.orm.hibernate3.HibernateCallback; r!a3\ep
import H_<C!OgR
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org.springframework.orm.hibernate3.support.HibernateDaoS "{Eta
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upport; usL*
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import com.javaeye.common.util.PaginationSupport; 84 pFc;<
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public abstract class AbstractManager extends .JiziFJ@mj
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HibernateDaoSupport { x`IEU*z#
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privateboolean cacheQueries = false; n`&U~s8w
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privateString queryCacheRegion; 2q4<t:!
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publicvoid setCacheQueries(boolean {9aE5kR
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cacheQueries){ tlp@?(u
this.cacheQueries = cacheQueries; 3az&