Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 :(x 90;DW
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 2,%ne (
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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 .^1=*j(;
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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 *KV]MdS
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分页支持类: 4'; ['
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java代码: DFjkp;`1
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package com.javaeye.common.util; I3aEg
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import java.util.List; S"Zs'7dy`
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publicclass PaginationSupport { A><%"9pZ
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publicfinalstaticint PAGESIZE = 30; L_Ai/'
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privateint pageSize = PAGESIZE; $S cjEG:6
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privateList items; &k{@:z
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privateint totalCount; h/w- &7t
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privateint[] indexes = newint[0]; {5z?5i ?D
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privateint startIndex = 0; )DLK<10
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public PaginationSupport(List items, int P?uKDON
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totalCount){ 3 \WdA$Wx
setPageSize(PAGESIZE); U&a]gkr
setTotalCount(totalCount); ^e 6(#SqR
setItems(items); 6qA{l_V
setStartIndex(0); p_(hM&>C
} 5Np. &
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public PaginationSupport(List items, int '}Y8a$(;V
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totalCount, int startIndex){ ?3, *
setPageSize(PAGESIZE); ffhD+-gTU
setTotalCount(totalCount); ! O>mu6:Rf
setItems(items); Yr,1##u
setStartIndex(startIndex);
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} +%~g$#tlJo
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public PaginationSupport(List items, int <z4!m/f[(
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totalCount, int pageSize, int startIndex){ pV+;/y_
setPageSize(pageSize); Kj>_XaFCg!
setTotalCount(totalCount); 8ksDXf`.
setItems(items); V!=]a^]:
setStartIndex(startIndex); eK@Y] !lz
} p 5'\< gQ
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publicList getItems(){ %~[F^
return items; #WG(V%f]
} OWkK]O
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publicvoid setItems(List items){ jHZ<Gc
this.items = items; E0PBdiD6hs
} 2g v(`NKYE
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publicint getPageSize(){ ;Os3
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return pageSize; +Snjb0
} :4Vt
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publicvoid setPageSize(int pageSize){ }A;Xd/,'r
this.pageSize = pageSize; 334*nQ
} BMW4E 5
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publicint getTotalCount(){ RinRQd
return totalCount; w?C\YKF7
} ;vx9xs?6
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publicvoid setTotalCount(int totalCount){ h^)2:0#{I
if(totalCount > 0){ dd+).*
this.totalCount = totalCount; xVPGlU
int count = totalCount / I|:j~EY
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pageSize; @mazwr{B
if(totalCount % pageSize > 0) re*/JkDq3K
count++; V]2z5u_q
indexes = newint[count]; kShniN
for(int i = 0; i < count; i++){ xl^'U/
indexes = pageSize * {m?x},
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} ;FBc^*q
}else{ H#y"3E<s
this.totalCount = 0; Mg$Z^v|}0
} 1d"P) 3dQ
} Y4O L 82Y
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publicint[] getIndexes(){ 9lxT5Wg
return indexes; .%A2
} \v_C7R;&
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publicvoid setIndexes(int[] indexes){ 2vC=.1k
this.indexes = indexes; 2 *$n?
} K&h6#[^\d
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publicint getStartIndex(){ Ah`dt8t
return startIndex; 4@I]PG
} EUkNh>U?
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publicvoid setStartIndex(int startIndex){ 68*{Lo?U
if(totalCount <= 0) |*5nr5c_L
this.startIndex = 0; qg/5m;U
elseif(startIndex >= totalCount) c"ztrKQQ
this.startIndex = indexes 'Ap5Aq
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[indexes.length - 1]; nz\fN?q
elseif(startIndex < 0) rWXW}Yg
this.startIndex = 0; 8rYK~Sz
else{ }t'^Au`X
this.startIndex = indexes fL;p^t u3
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[startIndex / pageSize]; jHCKV
} rzHa&:Y
} F e.*O`
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publicint getNextIndex(){ pg)g&ifKl
int nextIndex = getStartIndex() + s_LSsyqo
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pageSize; v2{s2kB=
if(nextIndex >= totalCount) |Y11sDa9h
return getStartIndex(); [\1l4C
else vNbA/sM
return nextIndex; 6]S.1BP
} "_j7kYAl
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publicint getPreviousIndex(){ ay4xOwcR
int previousIndex = getStartIndex() - r
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pageSize; <4,?lZ
if(previousIndex < 0) }o-P
return0; N sL"p2w~
else uw!|G>
return previousIndex; df& |Lc1J
} W)cLMGet
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} tqCg<NH.!m
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抽象业务类 GcW}<g}
java代码: bf/loMtD
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/** Yur)_m
* Created on 2005-7-12 @/L. BfTz
*/ N-E`go
package com.javaeye.common.business; oF R'GUQC
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import java.io.Serializable; j:3Hm0W3
import java.util.List; Ai18]QD-
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import org.hibernate.Criteria; Cl!jK^AbG
import org.hibernate.HibernateException; {1|7N
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import org.hibernate.Session; T(^8ki
import org.hibernate.criterion.DetachedCriteria; gq3OCA!cX
import org.hibernate.criterion.Projections; GuvF
import |LE++t*X~
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org.springframework.orm.hibernate3.HibernateCallback; e622{dfVS
import v^fOT5\
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org.springframework.orm.hibernate3.support.HibernateDaoS :0/o?'s
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upport; 4CT9-2UC
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import com.javaeye.common.util.PaginationSupport; .6o y>4
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public abstract class AbstractManager extends `+c9m^
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HibernateDaoSupport { g8A{aHb1}
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privateboolean cacheQueries = false; u#k,G`
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privateString queryCacheRegion; BrMp_M
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publicvoid setCacheQueries(boolean B-'BJ|*4I
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cacheQueries){ }AZx/[k
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this.cacheQueries = cacheQueries; l zPS
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} luk2fi<$
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publicvoid setQueryCacheRegion(String s
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queryCacheRegion){ 9k[},MM
this.queryCacheRegion = @i-@mxk6<
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queryCacheRegion; b:cK >fh0_
} ~{Rt4o _W
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publicvoid save(finalObject entity){ SLOYlRGCi
getHibernateTemplate().save(entity); 9~%]|_(
} PFgjWp"Y
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publicvoid persist(finalObject entity){ QYw4kD}
getHibernateTemplate().save(entity); >E ;o"
} edk9Qd9
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publicvoid update(finalObject entity){ <sYw%9V
getHibernateTemplate().update(entity); Y_>-p(IH
} ~V"cLTj"
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publicvoid delete(finalObject entity){ 4$DliP
getHibernateTemplate().delete(entity); =k<4mlok^
} #s
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publicObject load(finalClass entity, Hs-.83V
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finalSerializable id){ \If!5N
return getHibernateTemplate().load 8421-c6y>
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(entity, id); bW.zxQ:
} *
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publicObject get(finalClass entity, SOQ-D4q
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finalSerializable id){ gXLZ) >+A+
return getHibernateTemplate().get \{=`F`oB=
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(entity, id); 3et2\wOX1x
} V& j.>Y
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publicList findAll(finalClass entity){ A.C278^O8
return getHibernateTemplate().find("from imCl{vt(kj
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" + entity.getName()); lJ] \
} 4OZ5hH
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publicList findByNamedQuery(finalString QDgEJ%U-
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namedQuery){ Nk7e iQ
return getHibernateTemplate | ]!Ky[P
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().findByNamedQuery(namedQuery); FDd>(!>
} t6g)3F7 T
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publicList findByNamedQuery(finalString query, G<^]0`"+)t
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finalObject parameter){ P2Qyz}!wo
return getHibernateTemplate :Nj`_2
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().findByNamedQuery(query, parameter); Q#ZD&RZ9.
} 8K JQ(
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publicList findByNamedQuery(finalString query, ci_v7Jnwo
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finalObject[] parameters){ hr!f:D
return getHibernateTemplate 5U)ab3:
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().findByNamedQuery(query, parameters); >St.c
} 4{*tn"y
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publicList find(finalString query){ B|Fl,55
return getHibernateTemplate().find +-H}s`
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(query); /]/>jz>
} 3qAwBVWa
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publicList find(finalString query, finalObject lJ:M^.Em0
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parameter){ pK6e/eC
return getHibernateTemplate().find /B,:<&_-
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(query, parameter); uq !;
} I #M%%5e
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public PaginationSupport findPageByCriteria * MSBjH|
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(final DetachedCriteria detachedCriteria){ SUH mBo"}
return findPageByCriteria =y<">-
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); b&lN%+%}
} xl+DRPzl
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public PaginationSupport findPageByCriteria a
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(final DetachedCriteria detachedCriteria, finalint )p$\gwr=2
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startIndex){ gEZwW]r-
return findPageByCriteria "wA0 LH_
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(detachedCriteria, PaginationSupport.PAGESIZE, _4P;+Y
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startIndex); ! jbEm8bt
} p+, 1Fi
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public PaginationSupport findPageByCriteria nK+lE0
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(final DetachedCriteria detachedCriteria, finalint 9o-!ecx}
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pageSize, :{[<g](
finalint startIndex){ [RAj3Fr0
return(PaginationSupport) [f<"p[
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getHibernateTemplate().execute(new HibernateCallback(){ +$>N]1
publicObject doInHibernate IE&_!ce
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(Session session)throws HibernateException { mJ)tHv"7
Criteria criteria = B{s]juPG
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detachedCriteria.getExecutableCriteria(session); !G7h9CF|{
int totalCount = O$a#2p&
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((Integer) criteria.setProjection(Projections.rowCount ($c`s8mp
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()).uniqueResult()).intValue(); x+4vss
criteria.setProjection |5W8Q|>%
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(null); +H7y/#e+3
List items = K}
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criteria.setFirstResult(startIndex).setMaxResults F&