Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 9[{sEg=C$e
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Mjw[:70
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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 .0
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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 V.j#E1 P
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分页支持类: k~|ZO/X@l%
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java代码: gMay
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package com.javaeye.common.util;
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import java.util.List; sL
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publicclass PaginationSupport { L8Dm9}
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publicfinalstaticint PAGESIZE = 30; kA,4$2_o
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privateint pageSize = PAGESIZE; l#ygb|=x
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privateList items; Cz[5Ug'V
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privateint totalCount; o@',YF>OQ
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privateint[] indexes = newint[0]; Xv&%2-V;
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privateint startIndex = 0; 2<m
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public PaginationSupport(List items, int cf&C|U
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totalCount){ vVdxi9yk
setPageSize(PAGESIZE); _KxX&THaj
setTotalCount(totalCount); i8eA_Q
setItems(items); {[lx!QF 8&
setStartIndex(0); V^WQ6G1
} R05T5Q1]A
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public PaginationSupport(List items, int 9JXhHAxD
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totalCount, int startIndex){ wRj~Qv~E
setPageSize(PAGESIZE); 0@w&J9yG
setTotalCount(totalCount); =x oBC&u
setItems(items); /rOnm=P+Q
setStartIndex(startIndex); Y`q!V=
} w&9F>`VET
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public PaginationSupport(List items, int "d:.*2Z2
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totalCount, int pageSize, int startIndex){ `43vxcMg
setPageSize(pageSize); uzO{{S-
setTotalCount(totalCount); CP@o,v-
setItems(items); bsMC#xT
setStartIndex(startIndex); eoC<a"bJ>
} qb9}&'@:
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publicList getItems(){ ~6MMErSj
return items; (w}r7`n
} do*Wx2:R
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publicvoid setItems(List items){ 37~rm
this.items = items; ^Jn|*?+l
} <G&WYk%u*
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publicint getPageSize(){ %{Xm5#m
return pageSize; Le_CIk 5YL
} 65uZLsQ
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publicvoid setPageSize(int pageSize){ EJv! tyJ\[
this.pageSize = pageSize; ;+r0
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} rrbZ+*U
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publicint getTotalCount(){ ;g6 nHek
return totalCount; V02309Y
} &8zk3
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publicvoid setTotalCount(int totalCount){ l(.7t'
if(totalCount > 0){ YdPlN];[
this.totalCount = totalCount; vW9^hbdx
int count = totalCount / FV`3,NFk
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pageSize; y B1W>s8&
if(totalCount % pageSize > 0) y+l<vJu
count++; ST#PMb'izn
indexes = newint[count]; h=:*7>}
for(int i = 0; i < count; i++){ nIG[{gGX
indexes = pageSize * ZV0)
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} HE9.
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}else{ U9bFUK/z
this.totalCount = 0; kVy"+ZebK
} >>/nuWdpO
} 1a \=0=[
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publicint[] getIndexes(){ R%Kl&c
return indexes; t!NrB X
} (q055y
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publicvoid setIndexes(int[] indexes){ GcPB'`!M
this.indexes = indexes; L!`*R)I45
} mI2|0RWI)l
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publicint getStartIndex(){ jY1^+y{
return startIndex; (L]T*03#
} ~4l6unCI
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publicvoid setStartIndex(int startIndex){ 77)OW$G
if(totalCount <= 0) mm3zQ!2j.
this.startIndex = 0; 3 t~X:
elseif(startIndex >= totalCount) N;%j#(v
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this.startIndex = indexes O<gP)ZW~
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[indexes.length - 1]; T9aTEsA[U
elseif(startIndex < 0) '&rw=.cU
this.startIndex = 0; {9y9Kr|(P:
else{ NHst7$Y<
this.startIndex = indexes >?H_A
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[startIndex / pageSize]; C6Um6X9/i
} ZS07_6.~
} F0DPS:c
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publicint getNextIndex(){ TiwHLb9
int nextIndex = getStartIndex() + :FEd:0TS
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pageSize; Nj! R9N
if(nextIndex >= totalCount) FZ;YvdX6
return getStartIndex(); uOy\{5s8
else oY|
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return nextIndex; yTMGISX5
} ?)i6:76(
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publicint getPreviousIndex(){ I_{9eG1w?
int previousIndex = getStartIndex() - }[YcilU_
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pageSize; ?#');`
if(previousIndex < 0) oZ|{J
return0; Xmw2$MCB
else J~ PTVR
return previousIndex; f?oI'5R41
} B$iMU?B3
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} wFH(.E0@Q
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抽象业务类 5cv,
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java代码: _A# x&<c
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/** Y D1g]p
* Created on 2005-7-12 TU^tW
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package com.javaeye.common.business; &QHA_+88W
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import java.io.Serializable; [m@e^6F0U
import java.util.List; 5wVi{P5+
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import org.hibernate.Criteria; [NR0] #h
import org.hibernate.HibernateException; J[Y lo&w3
import org.hibernate.Session; (rCPr,@0
import org.hibernate.criterion.DetachedCriteria; **
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import org.hibernate.criterion.Projections; s`dkEaS
import w^vK7Z
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org.springframework.orm.hibernate3.HibernateCallback; *8(t y%5F0
import a-o
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org.springframework.orm.hibernate3.support.HibernateDaoS iz$v8;w
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upport; 6 I>xd
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import com.javaeye.common.util.PaginationSupport; ?7uStqa
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public abstract class AbstractManager extends ce-m)o/
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HibernateDaoSupport { iKCTYXN1(
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privateboolean cacheQueries = false; c"_H%x<[
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privateString queryCacheRegion; 0L
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publicvoid setCacheQueries(boolean R&d_WB4w
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cacheQueries){ _<&K]e@dp
this.cacheQueries = cacheQueries; 7xa@wa?!L
} >H]|A<9u(
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publicvoid setQueryCacheRegion(String 5<>R dLo
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queryCacheRegion){ TPmZ/c^
this.queryCacheRegion = 0DP%44Cv 9
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queryCacheRegion; f1,$<Y|qU
} LKwUpu!
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publicvoid save(finalObject entity){ 8aIq#v
getHibernateTemplate().save(entity); jL[Is2<@
} M,dzf
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publicvoid persist(finalObject entity){ t+Q|l&|0
getHibernateTemplate().save(entity); r
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} QK/+*hr;
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publicvoid update(finalObject entity){ *p<5(-J3
getHibernateTemplate().update(entity); ($ 1<Dj:
} Z[A|SyZp
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publicvoid delete(finalObject entity){ `E1_S
getHibernateTemplate().delete(entity); "Z1&z-
} >ehWjL`8
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publicObject load(finalClass entity, 0jx~_zq-j
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finalSerializable id){ uvc{RP
return getHibernateTemplate().load <38@b
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(entity, id); #j~FA3O
} jH#^O;A
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publicObject get(finalClass entity, 9G\3hL]
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finalSerializable id){ $5p'+bE
return getHibernateTemplate().get oVZ8p-
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(entity, id);
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} %}AY0fg?T
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publicList findAll(finalClass entity){ ~{tZ;YZ
return getHibernateTemplate().find("from >Ki]8&
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" + entity.getName()); It:QXLi;
} f0`rJ?us
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publicList findByNamedQuery(finalString }\qdow-
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namedQuery){ %<o$
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return getHibernateTemplate ezy5Jqk5%
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().findByNamedQuery(namedQuery); Ac(Vw%
} 4I[FE;^
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publicList findByNamedQuery(finalString query, `:
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finalObject parameter){ '-~/!i+=
return getHibernateTemplate UA u4x 7
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().findByNamedQuery(query, parameter); >WS&w;G
} wk7_(gT`0
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publicList findByNamedQuery(finalString query, g.sV$.T2K
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finalObject[] parameters){ Zkep7L
return getHibernateTemplate :[rKSA]@
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().findByNamedQuery(query, parameters); V# %spW
} 6G})h!
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publicList find(finalString query){ 0\<-R
return getHibernateTemplate().find r4>I?lD
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(query); 8 =Lv7G%
} 40sLZa)e
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publicList find(finalString query, finalObject J7] 60H#P
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parameter){ Y,"MQFr(o
return getHibernateTemplate().find *U^hwL
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(query, parameter); ]<?)(xz
} 1KR|i"
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public PaginationSupport findPageByCriteria ;l4\^E1
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(final DetachedCriteria detachedCriteria){ 'i-O
return findPageByCriteria n\p\*wb
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); WQC6{^/4[1
} -Dm.z16
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public PaginationSupport findPageByCriteria e[dRHl
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(final DetachedCriteria detachedCriteria, finalint vj$6
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startIndex){ 6N)1/=)
return findPageByCriteria :P1c>:j[
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(detachedCriteria, PaginationSupport.PAGESIZE, `v{X@ x
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startIndex); E,:pIw
} 9o'6es..@Z
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public PaginationSupport findPageByCriteria .*7UT~o=CS
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(final DetachedCriteria detachedCriteria, finalint wdV?&W+
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