Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 W6vf=I@f
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 q/$GE,"
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 r@iASITX
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 X(]Zr
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分页支持类: ibXe"X/_
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java代码: c5("-xB
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package com.javaeye.common.util; g5y;?fqJ
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import java.util.List; [Eu];
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publicclass PaginationSupport { r0\?WoF2C
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publicfinalstaticint PAGESIZE = 30; #zt*xS[{0
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privateint pageSize = PAGESIZE; )Vg2Jix,]
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privateList items; "mOI!xf@a
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privateint totalCount; kh3<V'k]
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privateint[] indexes = newint[0]; %k2FPmA6
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privateint startIndex = 0; /Wu |)tx
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public PaginationSupport(List items, int 3;-^YG
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totalCount){ @uM EXP
setPageSize(PAGESIZE); \0ov[T N.>
setTotalCount(totalCount); !,Nwts>m
setItems(items); R"3
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setStartIndex(0); v0#*X5C1'
} {oUAP1V^
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public PaginationSupport(List items, int b}@(m$W
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totalCount, int startIndex){ >&WhQhZ3kg
setPageSize(PAGESIZE); ,."b3wR[w
setTotalCount(totalCount); F\:(*1C
setItems(items); C#;@y|Rw
setStartIndex(startIndex); R{?vQsLk
} 'eyJS`
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public PaginationSupport(List items, int R^%e1KO]
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totalCount, int pageSize, int startIndex){ [
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setPageSize(pageSize); iY~rne"l
setTotalCount(totalCount); O4L#jBa+
setItems(items); lZWK2
setStartIndex(startIndex); ]Bnwk
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} %WGuy@tL
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publicList getItems(){ O>c$sL0g
return items; $*\L4<(
} R?pR xY
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publicvoid setItems(List items){ tHh HrMxO
this.items = items; zN~6HZ_:^
} vfw A$7N
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publicint getPageSize(){ lw[e*q{s.
return pageSize; R-rCh.
} Wto;bd
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publicvoid setPageSize(int pageSize){ :!Ig- +W
this.pageSize = pageSize; l-Nly>~
} ECcZz.
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publicint getTotalCount(){ bk<FL6z
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return totalCount; KrcgIB8X
} A6{b?aQ
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publicvoid setTotalCount(int totalCount){ VK:8 Nk_y
if(totalCount > 0){ AIRr{Y
this.totalCount = totalCount; FT89*C)oD
int count = totalCount / QI}E4-s8
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pageSize; ~AZWds(,N
if(totalCount % pageSize > 0) nfdq y)
count++; ` ;)ZGY\
indexes = newint[count]; 8)yI<`q6
for(int i = 0; i < count; i++){ 5$rSEVg9
indexes = pageSize * h}L}[
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} nSx]QREL!
}else{
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this.totalCount = 0; r$(~j^<s
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} . +
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publicint[] getIndexes(){ (Yb[)m>fQ}
return indexes; e3(/qMl
} 6l\FIah@
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publicvoid setIndexes(int[] indexes){ lfN~A"X
this.indexes = indexes; JC#>Td
} ,Hn^z<f
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publicint getStartIndex(){ ds:->+o
return startIndex; 9GLb"6+PK
} [10zTU`
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publicvoid setStartIndex(int startIndex){ >\Sr{p5KR
if(totalCount <= 0) k`{7}zxS
this.startIndex = 0; +q<B.XxkA
elseif(startIndex >= totalCount) 58V[mlW)O0
this.startIndex = indexes nBItO~l
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[indexes.length - 1]; iK()&TNz
elseif(startIndex < 0) x=Hndx^
this.startIndex = 0; Q.U$nph\%d
else{ I+(/TP
this.startIndex = indexes M*eJ
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[startIndex / pageSize]; OJAIaC\
} EZDy+6b
} S9| a$3K'
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publicint getNextIndex(){ LiQgR
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int nextIndex = getStartIndex() + {aYY85j
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pageSize; BX+.0M
if(nextIndex >= totalCount) _-TA{21)
return getStartIndex(); BB$oq'
else tw=oH9c80
return nextIndex; lfZ04M{2
} ,XkGe
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publicint getPreviousIndex(){ ~|ss*`CT
int previousIndex = getStartIndex() - "=/ f$Xf
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pageSize; >Z.\J2wM<j
if(previousIndex < 0) 6uPcXd:8ZR
return0; 5ExDB6Bx@y
else q.YfC
return previousIndex; ~]C%/gEh
} x#.C4O09
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} b</9Ai=
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抽象业务类 _PFnh)o
java代码: 4QOEw-~w&s
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/** DV)3
* Created on 2005-7-12 WI> P-D
*/ `o]g~AKX
package com.javaeye.common.business; C'yppl%
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import java.io.Serializable; j^tW
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import java.util.List; 39wa|:I
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import org.hibernate.Criteria; L"jY+{oLIJ
import org.hibernate.HibernateException; B.r4$:+jb2
import org.hibernate.Session; ($w@Z/;
import org.hibernate.criterion.DetachedCriteria; ~Nf})U
import org.hibernate.criterion.Projections; 66x?A0P
import v3d&*I
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org.springframework.orm.hibernate3.HibernateCallback; G7!W{;@I
import m%;D
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org.springframework.orm.hibernate3.support.HibernateDaoS &8.NT~"Gg
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upport; 5tjP6Z`!9`
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import com.javaeye.common.util.PaginationSupport; 8to8!(
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public abstract class AbstractManager extends goat<\a
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HibernateDaoSupport { m5mu:
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privateboolean cacheQueries = false; 8r"+bhGx~
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privateString queryCacheRegion; eW5SFY.
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publicvoid setCacheQueries(boolean h$eEn l}
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cacheQueries){ /~*_x=p:
this.cacheQueries = cacheQueries; jZ`;Cy\<B
} ,p(<+6QZ
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publicvoid setQueryCacheRegion(String 3rLTF\
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queryCacheRegion){ !Z
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this.queryCacheRegion = JSh.]j<bJL
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queryCacheRegion; (=D&A<YX
} lj+u@Z<xA
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publicvoid save(finalObject entity){ w 4[{2
getHibernateTemplate().save(entity); I>L-1o|^
} 4DZ-bt'
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publicvoid persist(finalObject entity){
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getHibernateTemplate().save(entity); AJ#Nenmj
} R.=}@oPb
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publicvoid update(finalObject entity){ aQ:5d3m0
getHibernateTemplate().update(entity); y.KO :P?5{
} rZ8`sIWQt
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publicvoid delete(finalObject entity){ bfo["
getHibernateTemplate().delete(entity); PkI:*\R
} Q.K,%(^;a
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publicObject load(finalClass entity, vfVj=DYj
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finalSerializable id){ y;/VB,4V
return getHibernateTemplate().load (o3
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(entity, id); Eke5Nb
} 6Gf?m;
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publicObject get(finalClass entity, ;b-XWK=
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finalSerializable id){ mI 74x3 [
return getHibernateTemplate().get SlsdqP
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(entity, id); [eTSZjIN7
} 9on@Q_7m
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publicList findAll(finalClass entity){ )1X#*mCxk
return getHibernateTemplate().find("from P.gb1$7<
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" + entity.getName()); bhniB@<
} 13taFVdU
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publicList findByNamedQuery(finalString 6gc>X%d `K
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namedQuery){ s[UHe{^T
return getHibernateTemplate -GxaV #{
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().findByNamedQuery(namedQuery); UX7t`l2R
} |1j["u1
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publicList findByNamedQuery(finalString query, Kr)a2rZ}SL
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finalObject parameter){ Bz,?{o6s)Q
return getHibernateTemplate :O uA)f
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().findByNamedQuery(query, parameter); ]\|VpIg
} -B +4+&{T
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publicList findByNamedQuery(finalString query, a\r\PBi
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finalObject[] parameters){ =E.wv
return getHibernateTemplate E>K!Vrh-L
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().findByNamedQuery(query, parameters); {;2PL^i
} Zu7)gf
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publicList find(finalString query){ q@{Bt{$x
return getHibernateTemplate().find lnjXDoVb<
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(query); vam;4vyu
} n@)K #
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publicList find(finalString query, finalObject DMO Mh#[
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parameter){ \.-bZ$
return getHibernateTemplate().find gw!vlwC&T
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(query, parameter); E 7{U|\
} H*}y^)x
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public PaginationSupport findPageByCriteria ;0Tx-8l
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(final DetachedCriteria detachedCriteria){ `x*Pof!Io
return findPageByCriteria o4Om}]Ti
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); ln6d<;
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} ,5h)x"s
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public PaginationSupport findPageByCriteria DW[N|-L
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(final DetachedCriteria detachedCriteria, finalint BI%$c~wS
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