Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 29nMm>P.e
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 .E9$j<SP-
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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 )8taMC:H^
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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 BI<(]`FP;s
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分页支持类: *x)u9rO]
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java代码: 8PqlbLo1
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package com.javaeye.common.util; tI
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import java.util.List; m2l0`l~T8
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publicclass PaginationSupport { E Uq6)
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publicfinalstaticint PAGESIZE = 30; "^ aSONz
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privateint pageSize = PAGESIZE; "AlR%:]24~
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privateList items; S#0C^
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privateint totalCount; M=fhRCUB
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privateint[] indexes = newint[0]; kaRjv
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privateint startIndex = 0; W6)XMl}n
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public PaginationSupport(List items, int m;sYg
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totalCount){ " ;o,D
setPageSize(PAGESIZE); @7sHFwtar?
setTotalCount(totalCount); ,D.@6bJW
setItems(items); 2h)*
setStartIndex(0); .B!L+M< [
} 3!Mb<W.3
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public PaginationSupport(List items, int 1`1Jn*|TI
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totalCount, int startIndex){ 6|Crc$4l
setPageSize(PAGESIZE); "Z"`X3,-z
setTotalCount(totalCount); BPy pA$
setItems(items); AY]rQ:I
setStartIndex(startIndex); )LL.fPic
} ;`Sn66&
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public PaginationSupport(List items, int [C3wjYi
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totalCount, int pageSize, int startIndex){ tbB.n
setPageSize(pageSize); t?p>L*
setTotalCount(totalCount); v){X&HbP
setItems(items); r2&/Ii+
setStartIndex(startIndex); RRtOBrIedI
} km}E&ao
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publicList getItems(){ rY"EW"y
return items; 'l1cuAP!+
} InG<B,/W?
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publicvoid setItems(List items){ ^.[+)0I
this.items = items; rjH W
} ab5i7@Ed
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publicint getPageSize(){ E;r~8^9)
return pageSize; ,27=i>>
} } d7o-
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publicvoid setPageSize(int pageSize){ ra]\!;}L0
this.pageSize = pageSize; UQ2;Dg G%
} ]Wc 2$
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publicint getTotalCount(){ HmpV;
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return totalCount; (Jy >,~O
} z6OJT6<'
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publicvoid setTotalCount(int totalCount){ Z?'?+48xv4
if(totalCount > 0){ Wp=:|J
this.totalCount = totalCount; 6
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int count = totalCount / Eqh&<]q
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pageSize; .:;#[Z{-
if(totalCount % pageSize > 0) kJ0otr2P
count++; 4hV~
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indexes = newint[count]; ulXe;2
for(int i = 0; i < count; i++){ KkZ o|\V
indexes = pageSize * D]Gt=2\NG9
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} ":^cb =
}else{ d\rs/ee
this.totalCount = 0; Xx=.;FYk
} GnW_^$Fs
} "\kr;X'
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publicint[] getIndexes(){ |R>I#NO5
return indexes; h!1CsLd[
} K/LoHWy+n*
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publicvoid setIndexes(int[] indexes){ Jz)c|8U
this.indexes = indexes; `L"{sW6S
} ZQDw|*a@
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publicint getStartIndex(){ y &%2
return startIndex; dRLvej,
} 0bG2YMs
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publicvoid setStartIndex(int startIndex){ r/6h}
if(totalCount <= 0) tJ9`Ys
this.startIndex = 0; O0>^?dsL
elseif(startIndex >= totalCount) _ 6'HBE
this.startIndex = indexes _qhYG1t
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[indexes.length - 1]; 4K$d%
elseif(startIndex < 0) w24@KaKFo
this.startIndex = 0; xr4kBC
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else{ (~n0,$
this.startIndex = indexes iLG~_Ob:
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[startIndex / pageSize]; nYO4JlNP
} (B;rjpK
} V|bN<BYJ
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publicint getNextIndex(){ v"smmQZik
int nextIndex = getStartIndex() + G |vG5$Nf
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pageSize;
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if(nextIndex >= totalCount) j*N:Kdzvl
return getStartIndex(); cXvq=Rb
else $v+t~b
return nextIndex; 9!oNyqQ
} qQUCK
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publicint getPreviousIndex(){ +t PqU6
int previousIndex = getStartIndex() - '#0'_9}
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pageSize; V$fvf#T
if(previousIndex < 0) bT{iei]?
return0; F]~>qt<ia
else Wi(Ac8uh
return previousIndex; uvf}7
} {QTnVS't 0
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} !5K9L(gqb
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抽象业务类 R7d45Wl
java代码: ]\5?E }kd
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/** /<$\)|r
* Created on 2005-7-12 ~1v5H]T{
*/ [<M~6]
package com.javaeye.common.business; Q)s[ls
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import java.io.Serializable; Q4,!N(>D
import java.util.List; !nkjp[p
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import org.hibernate.Criteria; h+7THMI
import org.hibernate.HibernateException; gK8{ =A0c
import org.hibernate.Session; zn'F9rWx>
import org.hibernate.criterion.DetachedCriteria; F"<TV&xf
import org.hibernate.criterion.Projections; &{c.JDO
import A7qKY-4B
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org.springframework.orm.hibernate3.HibernateCallback; o1kY|cnGH
import mew,S)dq!
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org.springframework.orm.hibernate3.support.HibernateDaoS +bw>9VmG
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upport; hc;8Vsa
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import com.javaeye.common.util.PaginationSupport; j!:^+F/
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public abstract class AbstractManager extends lef,-{X-
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HibernateDaoSupport { =k\V~8XZ
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privateboolean cacheQueries = false; ZYy?JDAO
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privateString queryCacheRegion; `'Af`u\R
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publicvoid setCacheQueries(boolean rVE!mi]%
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cacheQueries){ m["`Op4
this.cacheQueries = cacheQueries; V_T.#"C4=z
} pp#xN/V#a
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publicvoid setQueryCacheRegion(String ,33[/j
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queryCacheRegion){ N%k6*FBp~
this.queryCacheRegion = M(alc9tn
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queryCacheRegion; 1sqBBd"=PY
} j[Y$)HF
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publicvoid save(finalObject entity){ axSJ:j8
getHibernateTemplate().save(entity); .BR2pf|R
} Ip0~
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publicvoid persist(finalObject entity){ <