Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 q*F~~J!P
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 K)9j
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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 +Dq|l}
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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 HC9vc,Fp
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分页支持类: |iwM9oO%
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java代码: _ bXVg3oDt
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package com.javaeye.common.util; {*M>X}voS
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import java.util.List; 1BMV=_
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publicclass PaginationSupport { 12:h49AP
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publicfinalstaticint PAGESIZE = 30; `zElBD
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privateint pageSize = PAGESIZE; OQytgXED
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privateList items; g33<qYxP
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privateint totalCount; +X* F<6mZ
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privateint[] indexes = newint[0]; K)Df}fVOc
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privateint startIndex = 0; eHVdZ'%x
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public PaginationSupport(List items, int ;1{iF2jZ:
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totalCount){ wE,=%?"
setPageSize(PAGESIZE); I<D&,LFH*w
setTotalCount(totalCount); vpeq:h
setItems(items); vKU]80T
setStartIndex(0); dp"<KcP_
} ]97Xu_
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public PaginationSupport(List items, int LKK{j,g7
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totalCount, int startIndex){ SE-!|WR
setPageSize(PAGESIZE); ^w;o \G
setTotalCount(totalCount); _qC+'RE3
setItems(items); [<en1
setStartIndex(startIndex); "J]f0m=
} 4 o3)*
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public PaginationSupport(List items, int oJlN.Q#u&
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totalCount, int pageSize, int startIndex){ .;<7424(%
setPageSize(pageSize); 1zb$5 {,|
setTotalCount(totalCount); !XgQJ7y_Z
setItems(items); FSW3'
setStartIndex(startIndex); o-\ok|,)#j
} "?oo\op
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publicList getItems(){ >%iu!H"
return items; %-@'CNP
} *fxep08B
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publicvoid setItems(List items){ X0^zw^2W
this.items = items; X)FL[RO%q
} _N>wzkJ
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publicint getPageSize(){ w;N{>)hv
return pageSize; w"fCI13
} /`7 I K
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publicvoid setPageSize(int pageSize){ "_nX5J9
this.pageSize = pageSize; +G5'kYzJ
} 4ggVj*{v
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publicint getTotalCount(){ $?H]S]#|}.
return totalCount; M?E9N{t8)a
} H/cs_i
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publicvoid setTotalCount(int totalCount){ ggrI>vaw
if(totalCount > 0){ j G+T.
this.totalCount = totalCount; R19'|TJ
int count = totalCount / qJ\X~5{
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pageSize; 8pXfT%]
if(totalCount % pageSize > 0) mBw2
count++; umJay/>
indexes = newint[count]; M.o?CX'
for(int i = 0; i < count; i++){ ,$HHaoog
indexes = pageSize * ,3G$`
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} NY~ dM\
}else{ w0#%AK
this.totalCount = 0; V[#6yMU @
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} bq:wEMM4s
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publicint[] getIndexes(){ 11i"nR|
return indexes; }=Hf?';m
} IetCMp
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publicvoid setIndexes(int[] indexes){ S/a/1n$ U
this.indexes = indexes; c}YJqhk0J
} 929#Q#TT
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publicint getStartIndex(){ }j&O/Up
return startIndex; -Bl/4p
} "\NF
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publicvoid setStartIndex(int startIndex){ .?A'6
if(totalCount <= 0) ^/G?QR
this.startIndex = 0; 8r5xs-
elseif(startIndex >= totalCount) DG_}9M!DW@
this.startIndex = indexes jjxIS
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[indexes.length - 1]; aLV~|$:2
elseif(startIndex < 0) [fd~nD#.
this.startIndex = 0; %rFP#L
else{ }%_qx|(P|t
this.startIndex = indexes HTxB=Q|
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[startIndex / pageSize]; Tsu\oJ[
} b21}49bHN
} k"t>He
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publicint getNextIndex(){ [.M
int nextIndex = getStartIndex() + ty':`)
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pageSize; h!QjpzQe
if(nextIndex >= totalCount) x]H3Y3
return getStartIndex(); 'T%IvJ#Xu
else O2C6V>Q;
return nextIndex; 2K
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} $H4=QVj6
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publicint getPreviousIndex(){ ki#y&{v9Be
int previousIndex = getStartIndex() - K/DH
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pageSize; 5Qb;2!
if(previousIndex < 0) %?@x]B9Y8E
return0; =1O?jrl~q
else VZ;@S3TS
return previousIndex; O)l%OOv
} %j%%Rn
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} V!mWn|lf
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抽象业务类 61G|?Aax
java代码: -H4PRCDH
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/** V_jiOT!
* Created on 2005-7-12 +5#x6[
*/ vXc!Zg~
package com.javaeye.common.business; /=bSt
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import java.io.Serializable; Q^nG0<q+
import java.util.List; [@g ~
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import org.hibernate.Criteria; f7.m=lbe
import org.hibernate.HibernateException; P7'M],!9w
import org.hibernate.Session; '\@WN]
import org.hibernate.criterion.DetachedCriteria; hUBF/4s\
import org.hibernate.criterion.Projections; _'&k#Q
import 2,+d|1(4o
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org.springframework.orm.hibernate3.HibernateCallback; @#A!w;bz
import f]c<9Q>*
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org.springframework.orm.hibernate3.support.HibernateDaoS -E:(w<];
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upport; @$Yb#$/
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import com.javaeye.common.util.PaginationSupport; D6Dn&/>Zp
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public abstract class AbstractManager extends !1("(Eb
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HibernateDaoSupport { pVY4q0@
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privateboolean cacheQueries = false; gbJG`zC>U
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privateString queryCacheRegion; YKNb59k
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publicvoid setCacheQueries(boolean /Ad6+cY
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cacheQueries){ \PzN XQ$
this.cacheQueries = cacheQueries; NfOp=X?Y
} RFB(d=o5S
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publicvoid setQueryCacheRegion(String *G\=i
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queryCacheRegion){ EPv%LX_j
this.queryCacheRegion = b1H7
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queryCacheRegion; x+K gc[r
} UP R/XQ
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publicvoid save(finalObject entity){ (xbIUz.
getHibernateTemplate().save(entity); db'K!M)
} 2?*||c==*
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publicvoid persist(finalObject entity){ }{A?PHV5
getHibernateTemplate().save(entity); j"i#R1T
} ?@>;/@
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publicvoid update(finalObject entity){ ;HP#bx
getHibernateTemplate().update(entity); 2p+C%"n>
} q P'[&h5Y
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publicvoid delete(finalObject entity){ l!/!?^8|f
getHibernateTemplate().delete(entity); >GmN~"iJ
} 4
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publicObject load(finalClass entity, svqvG7
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finalSerializable id){ -(
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return getHibernateTemplate().load lYP~3wp99
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(entity, id); !:d L~n
} !D7"=G}HD
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publicObject get(finalClass entity, IyOpju)?
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finalSerializable id){ LfHzT<)|
return getHibernateTemplate().get J$rJd9t
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(entity, id); <>n9'i1
} lJUy;yp_+
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publicList findAll(finalClass entity){ W-ez[raY
return getHibernateTemplate().find("from _Ds@lVY
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" + entity.getName()); d-h"JZ9
} t{6ap +%L
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publicList findByNamedQuery(finalString X5 j=C]
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namedQuery){ P2t_T'R}
return getHibernateTemplate 1#q^uqO0
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().findByNamedQuery(namedQuery); w2C&%Xk
} _;7fraqX
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publicList findByNamedQuery(finalString query, O2% ` 2h
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finalObject parameter){ @0D![oA
return getHibernateTemplate "9ue76
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().findByNamedQuery(query, parameter); /'\;8A$J`
} %Ci^*zb
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publicList findByNamedQuery(finalString query, WcU@~05b
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finalObject[] parameters){ F3Dt7q
return getHibernateTemplate ol<lCp
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().findByNamedQuery(query, parameters); Mc:bU
} P:^=m*d
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publicList find(finalString query){ KJdzv!l=
return getHibernateTemplate().find ; :T9IL
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(query); Je@k iE
} Z(`r -}f I
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publicList find(finalString query, finalObject FQ!Oxlq,Q
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parameter){ sl^n6N
return getHibernateTemplate().find @mNJ=mEV
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(query, parameter); *i@T!O(1)M
} T/NjNEd#
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public PaginationSupport findPageByCriteria }PZ=`w*O
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(final DetachedCriteria detachedCriteria){ _ eiF@G
return findPageByCriteria 8%-%AWF]
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); T
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} /BKtw8
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public PaginationSupport findPageByCriteria oq. r\r
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(final DetachedCriteria detachedCriteria, finalint ~&KX-AC@
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startIndex){ # 66e@
return findPageByCriteria >XnO&hW
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(detachedCriteria, PaginationSupport.PAGESIZE, 8U=A{{0p
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startIndex); B2(,~^39
} b2s~%}T
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public PaginationSupport findPageByCriteria Z/7dg-$?'0
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(final DetachedCriteria detachedCriteria, finalint ${>DhfF
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pageSize, fI]b zv;
finalint startIndex){ qtY
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return(PaginationSupport) \8>oJR 6
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getHibernateTemplate().execute(new HibernateCallback(){ Yf=FeH7"
publicObject doInHibernate h)@InYwu7
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(Session session)throws HibernateException { n`.#59-Hx
Criteria criteria = s i?HkJv5
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detachedCriteria.getExecutableCriteria(session); o\goE^,aeR
int totalCount = 8(Fu
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((Integer) criteria.setProjection(Projections.rowCount L=g_@b
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()).uniqueResult()).intValue(); Hm4bN\%
criteria.setProjection 2yxi= XWZ
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(null); DEtf(lW_
List items = {cR3.%wX
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criteria.setFirstResult(startIndex).setMaxResults l;0y-m1
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(pageSize).list(); J*K<FFp3<
PaginationSupport ps = wDw<KU1UK
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new PaginationSupport(items, totalCount, pageSize, no|Gq>Xp
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startIndex); +NR n0
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return ps; * <q4S(l
} ~!]m6 /
}, true); C{&)(#*L
} K'Spbn!nC
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public List findAllByCriteria(final v20~^gKo=m
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DetachedCriteria detachedCriteria){ C0(sAF@
return(List) getHibernateTemplate 8W,*eke?
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().execute(new HibernateCallback(){ enumK\
publicObject doInHibernate _-TOeP8#94
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(Session session)throws HibernateException { HH zEQV Lh
Criteria criteria = 5~s{N
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detachedCriteria.getExecutableCriteria(session); ;"@ :}_t
return criteria.list(); !FP"M+
} De]^&qw(
}, true); ?!7
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} c,$mWTC
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public int getCountByCriteria(final choL%g}
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DetachedCriteria detachedCriteria){ wko2M[
Integer count = (Integer) 4m /TW)
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getHibernateTemplate().execute(new HibernateCallback(){ 2fbU-9Rfn
publicObject doInHibernate WHk/$7_"i
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(Session session)throws HibernateException { +* D4(
Criteria criteria = F[]&