Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 `:r-&QdU o
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 .,S`VNU
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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 SbL7e#!!
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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 %K\B)HR
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分页支持类: 4<1V
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java代码: t6-fG/Kc
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package com.javaeye.common.util; jb/C\2U4)
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import java.util.List; fYZd:3VdC
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publicclass PaginationSupport { #H~$^L
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publicfinalstaticint PAGESIZE = 30; d?YSVmG
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privateint pageSize = PAGESIZE; qycf;Kl:6
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privateList items; tNZZCdB
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privateint totalCount; 8VG~n?y
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privateint[] indexes = newint[0]; L*6<h
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privateint startIndex = 0; A`(Cuw-o
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public PaginationSupport(List items, int n?q+:P
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totalCount){ {s6#h #U
setPageSize(PAGESIZE); rW O#h{
setTotalCount(totalCount); gV:0&g\v
setItems(items); x=W s)&H_Y
setStartIndex(0); <]oPr1
} 4V]xVma
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public PaginationSupport(List items, int <H<Aba9\
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totalCount, int startIndex){ ,_7m<(/f
setPageSize(PAGESIZE); X>yE<ni
setTotalCount(totalCount); TOP,]N/F
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setItems(items); dR,a0+!
setStartIndex(startIndex); zC[LcC*+J
} @#o7U
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public PaginationSupport(List items, int 1UrkDz?X
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totalCount, int pageSize, int startIndex){ f<<$!]\
setPageSize(pageSize); p ~+sk1[.
setTotalCount(totalCount); 4>Q] \\Lc
setItems(items); w+\RSqz/
setStartIndex(startIndex); v33[Rk'
} 0f+]I=1\
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publicList getItems(){ ">fRM=fl
return items; chuJj
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} n*|8(fD
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publicvoid setItems(List items){
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this.items = items; Xpkj44cd@
} >A6PH*x
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publicint getPageSize(){ %md9ou`
return pageSize; % 1<@p%y/
} j6 _w2
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publicvoid setPageSize(int pageSize){ F?y
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this.pageSize = pageSize; r|3u]rt
} VWCC(YRU|$
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publicint getTotalCount(){ >u
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return totalCount; >Bm>/%2
} @ <'a0)n>
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publicvoid setTotalCount(int totalCount){ %uP/v\l
if(totalCount > 0){ TUp%Cx
this.totalCount = totalCount; ]@}@G[e#[
int count = totalCount / 7d_"4;K)
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pageSize; r"5\\ qf5*
if(totalCount % pageSize > 0) RC/&dB
count++; +fMW B
indexes = newint[count]; Jx4~ o{Z}c
for(int i = 0; i < count; i++){ 7:.!R^5H
indexes = pageSize * _B}QS"A
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} GL&rT&
}else{ p1ER<_fp
this.totalCount = 0; o3OJI_
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} "KY]2v.
} bG)6p05Oa
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publicint[] getIndexes(){ bXHtw}n
return indexes; :{xu_"nYr
} 1<M~#
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publicvoid setIndexes(int[] indexes){ V5I xZn%
this.indexes = indexes; iW?NxP
} JQ\o[t
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publicint getStartIndex(){ rV
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return startIndex; m{6*ae
} /-3)^R2H
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publicvoid setStartIndex(int startIndex){ Vf(n
if(totalCount <= 0) @d[)i,d:G
this.startIndex = 0; XToYtdt2
elseif(startIndex >= totalCount) <,nd]a
this.startIndex = indexes 7^h*rL9
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[indexes.length - 1]; .ityudT<
elseif(startIndex < 0) Lb2/ Te*
this.startIndex = 0; *>j4tA{b@v
else{ TrHUM4
this.startIndex = indexes @ v}M\$N?
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[startIndex / pageSize]; .lppT)P
} !AL?bW
} _3_o/I
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publicint getNextIndex(){ !z?:Y#P3
int nextIndex = getStartIndex() + ZpU4"x>
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pageSize; 'p'nAB''!
if(nextIndex >= totalCount) S3/Z]?o
return getStartIndex(); EPeV1$
else }Ot2; T
return nextIndex; 54&&=NVs|
} RYX=;n
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publicint getPreviousIndex(){ 0OVxx>p/x
int previousIndex = getStartIndex() - 7:S)J~s*O
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pageSize; Ml,87fo
if(previousIndex < 0) Gh{vExH@5(
return0; 2`h
else %X Wb|-=
return previousIndex; EF'U`\gX
} ]P(_
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} ]3yaIlpD1
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抽象业务类 EXbhyg
java代码: q^kOyA.
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/** l,M?
* Created on 2005-7-12 kR(hUc1O
*/ Y!nE65
package com.javaeye.common.business; J$i5A9IUr
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import java.io.Serializable; z4c{W~}`
import java.util.List; nrI-F,1
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import org.hibernate.Criteria; 'd=B{7k@
import org.hibernate.HibernateException; rc]`PV
import org.hibernate.Session; .^*
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import org.hibernate.criterion.DetachedCriteria; OLxiY r
import org.hibernate.criterion.Projections; Z&0*\.6S~
import I)X33X,
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org.springframework.orm.hibernate3.HibernateCallback; <al/>7z'
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import 9mH/xP:y
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org.springframework.orm.hibernate3.support.HibernateDaoS M&K'5G)7
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upport; C)`y<O
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import com.javaeye.common.util.PaginationSupport; *H,vqs\}y
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public abstract class AbstractManager extends f\gN+4)
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HibernateDaoSupport { L+y90 T6?
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privateboolean cacheQueries = false; V,)bw
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privateString queryCacheRegion; 1-60gI1)
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publicvoid setCacheQueries(boolean ^<O=<tN\
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cacheQueries){ Kr'5iFK7
this.cacheQueries = cacheQueries; $&iw (BIq
} -%^KDyZ<&
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publicvoid setQueryCacheRegion(String bjEm=4FI;
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queryCacheRegion){ StJ&YYdD
this.queryCacheRegion = YYUWBnf30G
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queryCacheRegion; 8(c,b
} Mm+kG'Z!S
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publicvoid save(finalObject entity){ _+hf.[""
getHibernateTemplate().save(entity); (:]on^|
} t LZ4<wc
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publicvoid persist(finalObject entity){ u*J,3o}
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getHibernateTemplate().save(entity); 1FiFP5
} K7H`Yt
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