Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 tgfM:kzw
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 wmiafBA e
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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 @[0jFjK
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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 QglYU
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分页支持类: V-:`+&S{^
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java代码: 6s&qZ+v-
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package com.javaeye.common.util; Q+HZ?V(
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import java.util.List; sD.6"w7}
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publicclass PaginationSupport { b_ypsGE]5!
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publicfinalstaticint PAGESIZE = 30; G+fd.~aGE
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privateint pageSize = PAGESIZE; ~X[S<Gi#
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privateList items; ]|;7R^o3|
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privateint totalCount;
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privateint[] indexes = newint[0]; Sr-|,\/O
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privateint startIndex = 0; 17|@f
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public PaginationSupport(List items, int Plb}dID"
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totalCount){ mQFa/7FX
setPageSize(PAGESIZE); $e>/?Ss
setTotalCount(totalCount); Cv0&prt
setItems(items); 5a8JVDLX^
setStartIndex(0); '+tKvTU;
} j,Pwket
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public PaginationSupport(List items, int !W0P`i<
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totalCount, int startIndex){ ofVEao
setPageSize(PAGESIZE); 8g-P_[>
setTotalCount(totalCount); vP-3j
setItems(items); VPdwSW[eM
setStartIndex(startIndex); @pTD{OW?
} 7:#
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public PaginationSupport(List items, int 2B5A!?~>
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totalCount, int pageSize, int startIndex){ ip<15;Z
setPageSize(pageSize); _r~!O$2
setTotalCount(totalCount); IU7$%6<Y
setItems(items); e21E_exM0
setStartIndex(startIndex); &3jBE--
} Lf[G>0t&n
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publicList getItems(){ te4F"SEf
return items; /A0 [_
} };i&a%I|
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publicvoid setItems(List items){ D!c1;IHZ
this.items = items; wwo(n$!\
} a$~IQ2$|6
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publicint getPageSize(){ f2`P8$U)R
return pageSize; B{[f}h.n
} UwZu:[T6H
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publicvoid setPageSize(int pageSize){ H&~5sEGa
this.pageSize = pageSize; /A%om|+Gq
} ?s1u#'aO
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publicint getTotalCount(){ )3BR[*u*
return totalCount; =X)Q7u".7
} v<{wA`'R+
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publicvoid setTotalCount(int totalCount){ dMey/A/VYt
if(totalCount > 0){ pp*bqY
this.totalCount = totalCount; aJEbAs}
int count = totalCount / oNiToFbQu
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pageSize; ~gSwxGT7d
if(totalCount % pageSize > 0) 'bZMh9|
count++; YgO aZqN
indexes = newint[count]; -iY9GN89c
for(int i = 0; i < count; i++){ aQ32p4C
indexes = pageSize * - 3C* P
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} EC^Ev|PB\u
}else{ b24NL'jm
this.totalCount = 0; .jvSAV5B
} 3'?h;`v\Lo
} om XBnzT
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publicint[] getIndexes(){ %bCcsdK
return indexes; 83{x"G3>
} 'LJ %.DJ
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publicvoid setIndexes(int[] indexes){ *37LN
this.indexes = indexes; "bHtf_
} Z}sG3p
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publicint getStartIndex(){ 1mT|o_K{ T
return startIndex; cmwzKu%
} 34X(J-1\|i
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publicvoid setStartIndex(int startIndex){ ${jA+L<J
if(totalCount <= 0) Kj~>&WU
this.startIndex = 0; XR{5]lKt_
elseif(startIndex >= totalCount) v< 65(I>
this.startIndex = indexes X{0ax.
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[indexes.length - 1]; =fKhXd
elseif(startIndex < 0) `ENlV9
this.startIndex = 0; 7V9%)%=h|
else{ nu\
this.startIndex = indexes wJapGc!
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[startIndex / pageSize]; D=i0e8D!+
} d[s;a.
} 1?/5A|?V4+
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publicint getNextIndex(){ ?F?\uC2)'
int nextIndex = getStartIndex() + j\XX:uU_
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pageSize; "i!2=A8k
if(nextIndex >= totalCount) &LCUoTzj
return getStartIndex(); 2 ||KP|5@
else R-g>W
return nextIndex; M!xm1-,[
} 4FfwpO3,Ku
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publicint getPreviousIndex(){ xm<5S;E5U4
int previousIndex = getStartIndex() - :0J-ek.;
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pageSize; pl
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if(previousIndex < 0) {u(}ED#p
return0; x?k
else (&9DB
return previousIndex; #U",,*2
} "sX[p
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} 2.HZ+1
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抽象业务类 /o<}]]YBF
java代码: ,wry u|7"$
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/** 9E->;0-
* Created on 2005-7-12 <2o.,2?G
*/ g( @$uJ
package com.javaeye.common.business; P+*rWJ8gQ
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import java.io.Serializable; c~^]jqid]
import java.util.List; aIzp\$NWVK
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import org.hibernate.Criteria; )+jK0E1
import org.hibernate.HibernateException; C*W.9
import org.hibernate.Session; 9sfB+]}h
import org.hibernate.criterion.DetachedCriteria; \dp9@y[^
import org.hibernate.criterion.Projections; yZj}EBa
import ;qT!fuN;
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org.springframework.orm.hibernate3.HibernateCallback; .J<qfQ
import w]o:c(x@
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org.springframework.orm.hibernate3.support.HibernateDaoS s60:0 >
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upport; :oon}_MdRd
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import com.javaeye.common.util.PaginationSupport; q/rHHuY}
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public abstract class AbstractManager extends 8ACYuN\
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HibernateDaoSupport { !SO$k%b}!
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privateboolean cacheQueries = false; ~kSnXJv
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privateString queryCacheRegion; H/^TXqQ8
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publicvoid setCacheQueries(boolean XoH[MJC
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cacheQueries){ <QkN}+B=
this.cacheQueries = cacheQueries; V~]'+A
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} 6'No4[F
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publicvoid setQueryCacheRegion(String RB% fA%d
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queryCacheRegion){ RIVL 0Ig
this.queryCacheRegion = [c
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queryCacheRegion; Il&"=LooZ
} 5uD#=/oV
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publicvoid save(finalObject entity){ ?*z(1!
getHibernateTemplate().save(entity); ;)=zvr17
} p~d)2TC4#
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publicvoid persist(finalObject entity){ z!1/_]WJ,
getHibernateTemplate().save(entity); E-tNB{r@
} -}N\REXE
} TX'Z?Lq
publicvoid update(finalObject entity){ [!dnm1
getHibernateTemplate().update(entity); +SuUI-.
} Z_^Kl76D
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publicvoid delete(finalObject entity){ \MFWK#W
getHibernateTemplate().delete(entity); ,Zcx3C:#
} }^GV(]K
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publicObject load(finalClass entity, }eDX8b8emA
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finalSerializable id){ Z:B Y*#B
return getHibernateTemplate().load c&Su d, &
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(entity, id); *09\\
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} 8O.:3%D~
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publicObject get(finalClass entity, '+q' H
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finalSerializable id){ ;@ll
return getHibernateTemplate().get m)[wZP*e
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(entity, id); 5rHnU<H@y
} s=y9!rr
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publicList findAll(finalClass entity){ l=-dK_I?
return getHibernateTemplate().find("from \")YKN=W
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" + entity.getName()); v4k=NH+w
} ;aRWJG
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publicList findByNamedQuery(finalString c9g \7L,Z
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namedQuery){ xU\:Vid+A
return getHibernateTemplate 1O3<%T#LOZ
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().findByNamedQuery(namedQuery); 1TxhE XB
} [vjkU7;7A
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publicList findByNamedQuery(finalString query, sei!9+bZr
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finalObject parameter){ "$:y03V
return getHibernateTemplate /?dQUu^z
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().findByNamedQuery(query, parameter); 73sAZa|
} #:\+7mCF
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publicList findByNamedQuery(finalString query, .IAHy)li"
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finalObject[] parameters){ IwgA A)H
return getHibernateTemplate Wn,g!rB^@
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().findByNamedQuery(query, parameters); Ko]h r
} tv=FFfQ
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publicList find(finalString query){ f s"V'E2a
return getHibernateTemplate().find (B/F6
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(query); bd 1J#V]
} L pi_uK
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publicList find(finalString query, finalObject 7E6?)bgh
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parameter){ em9]WSfZ@`
return getHibernateTemplate().find 8^"|-~#<
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(query, parameter); MdoWqpC
} eNC5' Z
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public PaginationSupport findPageByCriteria D>x'3WYR
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(final DetachedCriteria detachedCriteria){ mlw BATi
return findPageByCriteria $XU$?_O
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); +U/ "F|M
} cCbr-Z&
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public PaginationSupport findPageByCriteria z?_}+
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(final DetachedCriteria detachedCriteria, finalint qF6%XKbh=
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startIndex){ Sl<-)a:
return findPageByCriteria NCM{OAjS5U
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(detachedCriteria, PaginationSupport.PAGESIZE, .Zt/e>K&
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startIndex); WT
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} Vq7
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public PaginationSupport findPageByCriteria BMj&*p8R
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(final DetachedCriteria detachedCriteria, finalint 8}0y)aJ
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pageSize, Y(yJ|y&
finalint startIndex){ i\z0{;f|GX
return(PaginationSupport) PaeafL65=
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getHibernateTemplate().execute(new HibernateCallback(){ IlL
publicObject doInHibernate v%7JZ<I'A
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(Session session)throws HibernateException { PWD]qtr
Criteria criteria = :8L61d2(
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detachedCriteria.getExecutableCriteria(session); R]sjG<
int totalCount = GQ)cUrXQz
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((Integer) criteria.setProjection(Projections.rowCount v;qL?_:=c
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()).uniqueResult()).intValue(); F"#*8P
criteria.setProjection WIlS^?5I<
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(null); Q)X\VQcgj
List items = k+G4<qw
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criteria.setFirstResult(startIndex).setMaxResults AX Jj"hN
vCo}-b-j
(pageSize).list(); W" ,jZ"7
PaginationSupport ps = vgZPDf|
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new PaginationSupport(items, totalCount, pageSize, 0 S8{VZpy
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startIndex); ^a 5~FI:
return ps; 4GejT(U
} &'2l_b
}, true);
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} ,^66`C[G
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public List findAllByCriteria(final 2m}]z.w#
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DetachedCriteria detachedCriteria){ JJOs
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return(List) getHibernateTemplate 2-2LmxLG
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().execute(new HibernateCallback(){ vjWgR9 4/{
publicObject doInHibernate / ^M3-5@Q
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(Session session)throws HibernateException { .shI%'V
Criteria criteria = N5]68Fu'({
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detachedCriteria.getExecutableCriteria(session); +mPB?5
return criteria.list(); a2)*tbM9\
} >'g60 R[
}, true); ATewdq[C
} V0B4<TTAo~
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public int getCountByCriteria(final ]V\g$@
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DetachedCriteria detachedCriteria){ md_s2d
Integer count = (Integer) [o6<aE-
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getHibernateTemplate().execute(new HibernateCallback(){ &G,v*5N8$K
publicObject doInHibernate L7'n<$F
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(Session session)throws HibernateException { 3CL:VwoW
Criteria criteria = 2a}_|#*
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detachedCriteria.getExecutableCriteria(session); Gwk@X/q
return ~t$VzL1
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criteria.setProjection(Projections.rowCount #f@53Pxb
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()).uniqueResult(); 1x8]&
} :udZfA\sW
}, true); "q8'tN><