Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 0&~u0B{
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ';F][x 5j
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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 }5Uf`pM8
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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 dG+xr!
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分页支持类: +Eg# 8/q
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java代码: Hq$|j,&?
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package com.javaeye.common.util; 4N&}hOM'S
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import java.util.List; nt6"}vO
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publicclass PaginationSupport { Q!v[b{]8
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publicfinalstaticint PAGESIZE = 30; o5uwa{v
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privateint pageSize = PAGESIZE; |zKcL3*
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privateList items; %#~Wk|8} Q
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privateint totalCount; EK_^#b
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privateint[] indexes = newint[0]; >rubMGb
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privateint startIndex = 0; ><~hOK?v
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public PaginationSupport(List items, int Z)%p,DiNM
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totalCount){ u.6%n.g
setPageSize(PAGESIZE); FReK
setTotalCount(totalCount); T*m_rDDt
setItems(items); 9`AQsZ2
setStartIndex(0); U^D7T|P$V
} b8&9pLl
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public PaginationSupport(List items, int p20Nk$.
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totalCount, int startIndex){ &PX'=UT
setPageSize(PAGESIZE); 0'uj*Y{L
setTotalCount(totalCount); hkG<I';M?M
setItems(items); gN%R-e0
setStartIndex(startIndex); `Ec+i
} MZ'HMYed
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public PaginationSupport(List items, int [aC(Ga}
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totalCount, int pageSize, int startIndex){ RiklwR#~r/
setPageSize(pageSize); \N30SG?o
setTotalCount(totalCount); ?AE%N.rnsi
setItems(items); x&
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setStartIndex(startIndex); {$^|^n5j
} v]v f(]""
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publicList getItems(){ N<x5:f#+
return items; dq2v[?*R
} c1[;a>
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publicvoid setItems(List items){ 6c :$[owC
this.items = items; ?9:\1)]
} ?jbam!A
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publicint getPageSize(){ kVY@q&p
return pageSize; C;` fOCz^
} jolCR-FDu
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publicvoid setPageSize(int pageSize){ ]+AI:
this.pageSize = pageSize; $1e@3mzM
} H\T
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publicint getTotalCount(){ @OpcS>:R
return totalCount; ;
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} Hi Yx(hY
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publicvoid setTotalCount(int totalCount){ 4J s>yP
if(totalCount > 0){ r"+
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this.totalCount = totalCount; kcle|B
int count = totalCount / ;1KhUf;&F
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pageSize; y$WS;#
if(totalCount % pageSize > 0) jVDNThm+
count++; 1na[=Q2
indexes = newint[count]; E]
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for(int i = 0; i < count; i++){ bpkn[K"(
indexes = pageSize * 99 ["I:
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} f5N~K>
}else{ f: Rh9
this.totalCount = 0; *M{1RMc
} hRP0Djc
} ,#crtX
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publicint[] getIndexes(){ .+y#7-#6
return indexes; zMa`olTZ
} qcK)J/K"
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publicvoid setIndexes(int[] indexes){ U5Y*xm<
this.indexes = indexes; @:Ns`+ W*
} Th8xh=F[
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publicint getStartIndex(){ _Qv4;a
return startIndex; )YZ41K5N
} _u>+H#
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publicvoid setStartIndex(int startIndex){ ,"D1!0
if(totalCount <= 0) G
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this.startIndex = 0; _?{2{^v
elseif(startIndex >= totalCount) &rn,[w_F[
this.startIndex = indexes _2|,j\f;L
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[indexes.length - 1]; !o`al` q'
elseif(startIndex < 0) vOqT Ld
this.startIndex = 0; j1BYSfX'
else{ ?}W:DGudZ
this.startIndex = indexes ?B-aj
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[startIndex / pageSize]; .N%$I6w
} |Oo
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} f~]5A%=cZ
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publicint getNextIndex(){ ag3T[}L
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int nextIndex = getStartIndex() + B$\5=[U
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pageSize; U*-%V$3+w5
if(nextIndex >= totalCount) 9qw~]W~Nm
return getStartIndex(); ^!A{ 4NV
else }Iu 6]?|'
return nextIndex; 1Ao"DxZHy7
} "MyYu}AD
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publicint getPreviousIndex(){ 7QQnvoP
int previousIndex = getStartIndex() - R8ZW1
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pageSize; +'[iyHBJ
if(previousIndex < 0) KVK@Snn
return0; ~ WVrtY Ju
else m^TkFt<BM
return previousIndex; ;$W|FpR2
} [9w8oNg0
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} c0tv!PSw
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抽象业务类 c^m}ep\F5L
java代码: 5^%FEZ&Sp
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/** C3D1rS/I
* Created on 2005-7-12 r1,RloyZS
*/ ,#s}nJ4
package com.javaeye.common.business; 9D&ocV3QV
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import java.io.Serializable; ll6~8PN
import java.util.List; (Y-7B
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import org.hibernate.Criteria; 6Z7{|B5}Y
import org.hibernate.HibernateException; W4Zi?@L>'
import org.hibernate.Session; c: _l+CgeH
import org.hibernate.criterion.DetachedCriteria; 3Y>!e#
import org.hibernate.criterion.Projections; ETYw
import O%rjY
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org.springframework.orm.hibernate3.HibernateCallback; XWK A0
import 1,Y-_e)
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org.springframework.orm.hibernate3.support.HibernateDaoS c\n\gQ:LQ
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upport; tM~R?9OaJ
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import com.javaeye.common.util.PaginationSupport; {gzL}KL
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public abstract class AbstractManager extends xaejG/'iK
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HibernateDaoSupport { SeKU?\
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privateboolean cacheQueries = false; R\)pW9)
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privateString queryCacheRegion; Rs7=v2>I
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publicvoid setCacheQueries(boolean ~fEgrF d
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cacheQueries){ TN(1oJ:
this.cacheQueries = cacheQueries; 7)z^*;x
} m\[r6t]V
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publicvoid setQueryCacheRegion(String HjLY\.S
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queryCacheRegion){ LC/6'4}_
this.queryCacheRegion = ShFSBD\M#
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queryCacheRegion; ,LX]
} =fEn h'KE
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publicvoid save(finalObject entity){ [.dF)I3
getHibernateTemplate().save(entity); mm'Pe4*
} ux'!1mN
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publicvoid persist(finalObject entity){ o[0Cv*
getHibernateTemplate().save(entity); E\ 5t&jZr
} !Mceg
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publicvoid update(finalObject entity){ WM~@/J
getHibernateTemplate().update(entity); /{^Qup
} Q"S;r1 D
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publicvoid delete(finalObject entity){ *?+E?AGe
getHibernateTemplate().delete(entity); W/L~&.'
} V'^Hn?1^
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publicObject load(finalClass entity, gYw4YP0Gz
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finalSerializable id){ 7NE"+EP\{2
return getHibernateTemplate().load Rra<MOR
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(entity, id); V)=!pT
} *xI0hFJIM
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publicObject get(finalClass entity, e3}`]
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finalSerializable id){ 2r]80sWY
return getHibernateTemplate().get N*gnwrP{
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(entity, id); ~*@UQ9*p#
} >/9f>d?w^
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publicList findAll(finalClass entity){ 1
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return getHibernateTemplate().find("from R<I)}<g(A3
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" + entity.getName()); &Rdg07e;>
} HN]roSt~
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publicList findByNamedQuery(finalString EIPNR:6t
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namedQuery){ Q$^oIFb
return getHibernateTemplate pX `BDYg.
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().findByNamedQuery(namedQuery); b*&AIiT
} ,4M7:=gf
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publicList findByNamedQuery(finalString query, <F{EZ Ii
@(<C {
finalObject parameter){ Q}C)az
return getHibernateTemplate :c)N"EJlI2
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().findByNamedQuery(query, parameter); dj>zy
} ?S9? ?y/
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publicList findByNamedQuery(finalString query, xkV(E!O
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finalObject[] parameters){ &c>%E%!"
return getHibernateTemplate 8w/$!9[
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().findByNamedQuery(query, parameters); N@6+DHt
} 4c^WQ>[
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publicList find(finalString query){ j1D 1tn
return getHibernateTemplate().find @K.{o'
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(query); ^,O%E;g^#
} &y_Ya%Z3*e
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publicList find(finalString query, finalObject 2t
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parameter){ AQ+MjS,
return getHibernateTemplate().find ynY(
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(query, parameter); F#Y9 @E
} $r+_Y/
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public PaginationSupport findPageByCriteria 5,dKha
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(final DetachedCriteria detachedCriteria){ I8};t b#
return findPageByCriteria uIh68UM
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 7W[+e&
} mk.1j x?l
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public PaginationSupport findPageByCriteria 69< <pm,m
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(final DetachedCriteria detachedCriteria, finalint ./5LV)_`
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startIndex){ x
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return findPageByCriteria gi {rqM
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(detachedCriteria, PaginationSupport.PAGESIZE, HE!"3S2S&+
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startIndex); =)b!M^=X-a
} @~7y\G
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public PaginationSupport findPageByCriteria m4\e`nl
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(final DetachedCriteria detachedCriteria, finalint
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pageSize, t?Ku6Z'
finalint startIndex){ Dxvizd>VU
return(PaginationSupport) 1FA:"0lO
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getHibernateTemplate().execute(new HibernateCallback(){ s#cb wDT
publicObject doInHibernate ==#mlpi`S[
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(Session session)throws HibernateException { B<$(Nb5<
Criteria criteria = ~cv322N
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detachedCriteria.getExecutableCriteria(session); LO;7NK
int totalCount = m+|yk.md
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((Integer) criteria.setProjection(Projections.rowCount je;C}4
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()).uniqueResult()).intValue(); #nq$^H
criteria.setProjection M"\Iw'5$
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(null); 3s\}|LqX#
List items = 3QI. |;X
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criteria.setFirstResult(startIndex).setMaxResults 'nIKkQ" N
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(pageSize).list(); >\?RYy,s$
PaginationSupport ps = 8 /vGA=
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new PaginationSupport(items, totalCount, pageSize, Uee(1
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startIndex); eC{St0
return ps; 8AVtUU
} ?ESsma6
}, true); 3d`u!i?/
} x?7z15\
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public List findAllByCriteria(final DuQW?9^232
{h*)|J
DetachedCriteria detachedCriteria){ -{XDQ{z<%
return(List) getHibernateTemplate 8|L;y[v
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().execute(new HibernateCallback(){ %63s( ekU
publicObject doInHibernate [a_'pAH
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(Session session)throws HibernateException { 8,@0~2fz#
Criteria criteria = u|"y&>!R-
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detachedCriteria.getExecutableCriteria(session); 6e>P!bo
return criteria.list(); j=dGNi)R
} x,NV{uG$n
}, true); 8'PK}heBU
} 2#(dfEAy
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public int getCountByCriteria(final w8D6j%C
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DetachedCriteria detachedCriteria){ ,!H`@Kl
Integer count = (Integer) Xhs*nt%l
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getHibernateTemplate().execute(new HibernateCallback(){ r$:hiE@
publicObject doInHibernate []jbzVwS2
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(Session session)throws HibernateException { qizQt]l
Criteria criteria = Mt4*`CxtH;
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detachedCriteria.getExecutableCriteria(session); s<+;5, Q|
return =O/v]B8"
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criteria.setProjection(Projections.rowCount Tb:6IC7="
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()).uniqueResult(); 7,s5Gd-
} X[!S7[d-y
}, true); sd9b9?qiu
return count.intValue(); I!#WXK
} 8VtRRtl
} |>RNIJ]
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