Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ;R<V-gab
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 @[f$MRp\
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 N_Zd.VnY
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 E`C!q
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分页支持类: 7[K3kUm[
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java代码: Y%|dM/a`
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package com.javaeye.common.util; 5Fj9.K~k
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import java.util.List; 2|WM?V&
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publicclass PaginationSupport { G+k wG)K
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publicfinalstaticint PAGESIZE = 30; c6h+8QS
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privateint pageSize = PAGESIZE; ]$sb<o
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privateList items; ">20`Mj8
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privateint totalCount; EAxdF
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privateint[] indexes = newint[0]; gf9U<J#&C
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privateint startIndex = 0; bGy|T*@
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public PaginationSupport(List items, int L
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totalCount){ dV}]\8N
setPageSize(PAGESIZE); \1n (Jr.<
setTotalCount(totalCount); 9Nx%Sdu
setItems(items); l%?4L/J)#
setStartIndex(0); R?2HnJh
} 4PkKL/E
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public PaginationSupport(List items, int Dfc%
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totalCount, int startIndex){ ;4GGXT++L
setPageSize(PAGESIZE); f4F%\ "
setTotalCount(totalCount); n6M #Xc'JA
setItems(items);
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setStartIndex(startIndex); F;kKn:X L
} )`ixT)
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public PaginationSupport(List items, int N^PkSf[)h5
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totalCount, int pageSize, int startIndex){ =VT\$
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setPageSize(pageSize); Qnt9x,1m_
setTotalCount(totalCount); #Q-#7|0&
setItems(items); /` nkz
setStartIndex(startIndex); ]sE)-8
} @3=q9ftm
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publicList getItems(){ Iu5 9W>
return items; 8t)gfSG
} 1w7XM0SHcn
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publicvoid setItems(List items){ N7
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this.items = items; \7#w@3*
} d<HO~+9
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publicint getPageSize(){ HvKdV`bz
return pageSize;
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} . &`YlK
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publicvoid setPageSize(int pageSize){ /lPnf7
this.pageSize = pageSize; =PNkzFUo
} l?V#;
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publicint getTotalCount(){ j {2 0
return totalCount; Dv`"3
} }aI>dHL
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publicvoid setTotalCount(int totalCount){ 6BEpnw>p(
if(totalCount > 0){ R$A%Zh6
this.totalCount = totalCount; W=LJhCpRHj
int count = totalCount / S#He OPRL
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pageSize; .X"&kO>G
if(totalCount % pageSize > 0) I&gd"F _v}
count++; b!Nr
indexes = newint[count]; a~LdcUYs
for(int i = 0; i < count; i++){ ST~YO
indexes = pageSize * pFZ$z?lI
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} &,:!gYN
}else{ zxD=q5in
this.totalCount = 0; [Ob'E!;<
} L+T7Ge
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} "L1LL
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publicint[] getIndexes(){ 72J=_d>+
return indexes; Qy}pn=#Q
} i+< v7?:`#
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publicvoid setIndexes(int[] indexes){ yJO Jw o^
this.indexes = indexes; $cwmfF2C
} {<gX~./]c
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publicint getStartIndex(){ N;BuBm5K
return startIndex; 1>Vq<z
} A-_M=\
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publicvoid setStartIndex(int startIndex){ H"k\(SPVS
if(totalCount <= 0) 4g}r+!T
this.startIndex = 0; 92.Rjz;=9?
elseif(startIndex >= totalCount) G %\/[
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this.startIndex = indexes &DHIYj1 i
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[indexes.length - 1]; P$N5j~*
elseif(startIndex < 0) @JLN3
this.startIndex = 0; BD}%RTeWKq
else{ j)@{_tv6;
this.startIndex = indexes f8qDmk5s
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[startIndex / pageSize]; [cZ/)tm
}
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} _s5FYb#
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publicint getNextIndex(){ vlZmmQeJm
int nextIndex = getStartIndex() + [q_62[-X
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pageSize; re#]zc<
if(nextIndex >= totalCount) f#!nj]}#
return getStartIndex(); 1q5S"=+W[
else Q8QB{*4
return nextIndex; vdB2T2F
} i^Jw`eAmT
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publicint getPreviousIndex(){ Fv$w:r]q6
int previousIndex = getStartIndex() - Jg{K!P|i
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pageSize; ^-n^IR}J
if(previousIndex < 0) (vzYgU,
return0; ~&F|g2:
else _y>drvg
return previousIndex; $F X$nY
} gGBRfq>
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} #Yp&yi
}
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抽象业务类 HrFbUK@@
java代码: $3&XM
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/** ;V?(j3b[
* Created on 2005-7-12 KHC Fz
*/ AW|SD
package com.javaeye.common.business; "iX\U'`
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import java.io.Serializable; _K'Y`w']
import java.util.List; p}/D{|xO
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import org.hibernate.Criteria; zw$\d1-+h
import org.hibernate.HibernateException; mJ5%+.V
import org.hibernate.Session; Iw(
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import org.hibernate.criterion.DetachedCriteria; Knb(MI6
import org.hibernate.criterion.Projections; b2[U3)|oO
import OkISRj'!U
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org.springframework.orm.hibernate3.HibernateCallback; `U\l: ~]e
import T3"'`Sd9;
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org.springframework.orm.hibernate3.support.HibernateDaoS wTZ(vX*mK
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upport; H_x}-
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import com.javaeye.common.util.PaginationSupport; ;qbK[3.
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public abstract class AbstractManager extends 8*{jxN'M
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HibernateDaoSupport { F]>+pU
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privateboolean cacheQueries = false; -JPkC(V7]
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privateString queryCacheRegion; ~OxFgKn23&
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publicvoid setCacheQueries(boolean gV\Y>y4v
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cacheQueries){ #<sK3 PT
this.cacheQueries = cacheQueries; '|5o(6u'
} y x#ub-A8
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publicvoid setQueryCacheRegion(String _zzNF93Bn
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queryCacheRegion){ Xc"
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this.queryCacheRegion = =OPX9oG
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queryCacheRegion; > mJ`904L
} 'X6Y!VDd
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publicvoid save(finalObject entity){ 8==M{M/eM
getHibernateTemplate().save(entity); ?vI2mra+
} o~"Y_dLsW
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publicvoid persist(finalObject entity){ vZ$E
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getHibernateTemplate().save(entity); VGxab;#,:3
} .j|uf[?h
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publicvoid update(finalObject entity){ @H+L1H%9n
getHibernateTemplate().update(entity); 9(z) ^G
} [E6ceX0
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publicvoid delete(finalObject entity){ hDZyFRg
getHibernateTemplate().delete(entity); v.>K
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} l;R8"L:,p\
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publicObject load(finalClass entity, ,`YBTU
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finalSerializable id){ D Y4!RjJ47
return getHibernateTemplate().load Gx}`_[-
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(entity, id); n|DMj[uT
} T9]0/>
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publicObject get(finalClass entity, GJ2ZK=/
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finalSerializable id){ (pP.*`JRv
return getHibernateTemplate().get m8R=wb
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(entity, id); "_dg$j`Y&&
} $Zw+"AA
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publicList findAll(finalClass entity){ m}oR*<.
return getHibernateTemplate().find("from f/IQ2yT-:D
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" + entity.getName()); }YM\IPsPu
} e<a*@
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publicList findByNamedQuery(finalString
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namedQuery){ *!*%~h8V
return getHibernateTemplate XE2rx2k
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().findByNamedQuery(namedQuery); N81M9#,["~
} VmQ'
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publicList findByNamedQuery(finalString query, enQW;N1_M
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finalObject parameter){ r@vt.t0#
return getHibernateTemplate cS:O|R#%t
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().findByNamedQuery(query, parameter); %eIaH!x:
} 8Lx1XbwK
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publicList findByNamedQuery(finalString query, xDH#K0-#L
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finalObject[] parameters){ xfI0P0+
return getHibernateTemplate Umz b
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().findByNamedQuery(query, parameters); ~x<?Pj
} X/vyb^:U
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publicList find(finalString query){ Xy!NBh7I
return getHibernateTemplate().find V.qH&FJ=l
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(query); -Q
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} v7KBYN
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publicList find(finalString query, finalObject pmWy:0 R
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parameter){ .|hsn6i/-
return getHibernateTemplate().find |W=-/~X
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(query, parameter); \-[bU6\A\
} }79jyS-e
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public PaginationSupport findPageByCriteria !5?_)
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(final DetachedCriteria detachedCriteria){ DQP!e6Of
return findPageByCriteria W SxoGly
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); ~TS!5Wiv
} \9`
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public PaginationSupport findPageByCriteria 9s[
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(final DetachedCriteria detachedCriteria, finalint `O0Qtq.
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startIndex){ "Ueq
return findPageByCriteria $%"hhju
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(detachedCriteria, PaginationSupport.PAGESIZE, ~]d 9 J
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startIndex); jXALL8[c
} (GpP=lSSeY
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public PaginationSupport findPageByCriteria &oHr]=xA
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(final DetachedCriteria detachedCriteria, finalint oQmXKV+[v
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pageSize, g}R Cjl4
finalint startIndex){ T8|?mVv s
return(PaginationSupport) #5{xWMp/0
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getHibernateTemplate().execute(new HibernateCallback(){ >bQOpGy}l
publicObject doInHibernate X`WS&!C<
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(Session session)throws HibernateException { U/s
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Criteria criteria = h4 9q(085V
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detachedCriteria.getExecutableCriteria(session); fiA8W
int totalCount = XxdD)I
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