Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 t@u7RL*n:<
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 1)
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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 7K)6^r^
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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 ?]D"k4
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分页支持类: 'RRmIx2X
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java代码: y_\p=0t8
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package com.javaeye.common.util; =]:> "_jN
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import java.util.List; GpZc5c
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publicclass PaginationSupport { 64hk2a8
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publicfinalstaticint PAGESIZE = 30; b
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privateint pageSize = PAGESIZE; 3nZo{p:E
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privateList items; \
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privateint totalCount; O'Js}
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privateint[] indexes = newint[0]; 9Xx's%U
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privateint startIndex = 0; EwOV;>@T?
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public PaginationSupport(List items, int K|dso]b/
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totalCount){ ^]{R.(#z
setPageSize(PAGESIZE); ByCnD
setTotalCount(totalCount); `jwa<N4e@
setItems(items); 7o8{mp'_
setStartIndex(0); V<Z[ nq
} MEwo}=B
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public PaginationSupport(List items, int 5 ~TdD6}
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totalCount, int startIndex){ 'fW6
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setPageSize(PAGESIZE); FQ=@mjh
setTotalCount(totalCount); **}h&k&%2
setItems(items); ,3@#F/c3i~
setStartIndex(startIndex); In`mtn q
} ]Kr
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public PaginationSupport(List items, int Ei2'[PK
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totalCount, int pageSize, int startIndex){ OKoan$#sn
setPageSize(pageSize); OE}*2P/M>
setTotalCount(totalCount); N^3N[lD{
setItems(items); Fd0%lnui
setStartIndex(startIndex); P*cNh43U
} ;[fw]P n
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publicList getItems(){ ki85!k=Q2
return items; % LJs
} J>/w5$h5
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publicvoid setItems(List items){ F7Zwh5W
this.items = items; TY1I=8
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publicint getPageSize(){ w Xsmn1w9
return pageSize; ~R(%D-k
} )E~79!
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publicvoid setPageSize(int pageSize){ l5"OIq
this.pageSize = pageSize; =Q.^c.sw
} u9N 1pZ~
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publicint getTotalCount(){ xD6@Qk
return totalCount; Rz.? i+
} () j=5KDu
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publicvoid setTotalCount(int totalCount){ b j'Xg
if(totalCount > 0){ >uSy
this.totalCount = totalCount; ';<0/U
int count = totalCount / xXM{pd
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pageSize; Nqu>6^-z0
if(totalCount % pageSize > 0) }K&7%N4LZ
count++; kXf'5p1
indexes = newint[count]; 1PpyV f
for(int i = 0; i < count; i++){ qzTuxo0B
indexes = pageSize * )a-Du$kd
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} nJo`B4'U
}else{ NUp<e%zB
this.totalCount = 0; %@u;5qD&
} Sv +IS
}
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publicint[] getIndexes(){ ll C#1
return indexes; 7k rUKYVo
} <TP=oq?I/
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publicvoid setIndexes(int[] indexes){ wYmM"60
this.indexes = indexes; /AW=5Ck- #
} l?Ya"C`FL
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publicint getStartIndex(){ mFi&YpHu3
return startIndex; %T~ig[GstX
} 6Aku1h
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publicvoid setStartIndex(int startIndex){ } q$ WvY/
if(totalCount <= 0) =F@Wgn,
this.startIndex = 0; (JM5`XwM
elseif(startIndex >= totalCount) GSRVe/[
this.startIndex = indexes !7kG!)40
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[indexes.length - 1]; ,]d,-)KX8
elseif(startIndex < 0) gntxNp[9T
this.startIndex = 0; 3de_V|%
else{ /bi}'H+#
this.startIndex = indexes sIxTG y.
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[startIndex / pageSize]; pim!.=vN/U
} L>3x9
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publicint getNextIndex(){ <?@NRFTe
int nextIndex = getStartIndex() + 3h *!V6%q
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pageSize; sn)3ZA
if(nextIndex >= totalCount) 6=fSE=]DY
return getStartIndex(); EUxG Aj$-
else D`$hPYK|_
return nextIndex; c|#8T*`C
} eY|
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publicint getPreviousIndex(){ sL\L"rQN6
int previousIndex = getStartIndex() - [_}J F}6
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pageSize; #n#@fAY
if(previousIndex < 0) Y$?9Zkp>
return0; tQBRA/
else , T8>}U(
return previousIndex; vuoQz\
} {\:{[{qF
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抽象业务类 DKBSFm{~Q
java代码: <=>=.kmGt
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/** lp(8E6
* Created on 2005-7-12 Ro9tZ'N!S
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package com.javaeye.common.business; SN1}xR$
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import java.io.Serializable; N19({0+i2
import java.util.List;
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import org.hibernate.Criteria; 1*@'-mj
import org.hibernate.HibernateException; Jz2N
import org.hibernate.Session; pP*a
import org.hibernate.criterion.DetachedCriteria; uA#P'?
import org.hibernate.criterion.Projections; z{o'
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org.springframework.orm.hibernate3.HibernateCallback; 2fWTY0
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org.springframework.orm.hibernate3.support.HibernateDaoS z}*9uZ
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upport; (adyZ/j
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import com.javaeye.common.util.PaginationSupport; 7G/1VeVjB
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public abstract class AbstractManager extends YJJB.hR+
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HibernateDaoSupport { Yq%9M=#k
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privateboolean cacheQueries = false; v~@pMA$(h
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privateString queryCacheRegion; USM4r!x
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publicvoid setCacheQueries(boolean 5Hw~2 ?a,
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cacheQueries){ p(/dBt[3k
this.cacheQueries = cacheQueries; 'a\%L:`
} c+hQSm|bf)
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publicvoid setQueryCacheRegion(String 7r~~Y%=C|
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queryCacheRegion){ g.zEn/SM
this.queryCacheRegion = 3%%o?8ES
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queryCacheRegion; &i$ldR
} ".<DAs j
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publicvoid save(finalObject entity){ ,v';>.]
getHibernateTemplate().save(entity); ^HqY9QT2
} v33dxZ'
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publicvoid persist(finalObject entity){ -6n K<e`
getHibernateTemplate().save(entity); ,I%g|'2
} b"vv>Q~U
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publicvoid update(finalObject entity){ P8*=Ls+-F
getHibernateTemplate().update(entity);
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} woD>!r>)
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publicvoid delete(finalObject entity){ *rIk:FehLB
getHibernateTemplate().delete(entity); \v.C]{Gzc
} o1h={ao
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publicObject load(finalClass entity, L>SjllY
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finalSerializable id){ urMG*7i <c
return getHibernateTemplate().load w[IE
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} 8(~K~q[Cr
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publicObject get(finalClass entity, `m!j$,c.
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finalSerializable id){ CkdP #}f
return getHibernateTemplate().get ^`)) C;
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(entity, id); ~s]iy9i
} 8p@Piy{p
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publicList findAll(finalClass entity){ dVi!Q@y+
return getHibernateTemplate().find("from n1VaLD
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" + entity.getName()); JSTuXW
} O"c;|zCc>
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publicList findByNamedQuery(finalString "F.;Dv9V[0
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namedQuery){ OG~6L4"
return getHibernateTemplate <F`>,Pm
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().findByNamedQuery(namedQuery); z2QP)150
} s1h/}
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publicList findByNamedQuery(finalString query, ^ml'?
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finalObject parameter){ 2gq9k}38
return getHibernateTemplate @]-jl}:]
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().findByNamedQuery(query, parameter); 1M
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} ZGYr$C~
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publicList findByNamedQuery(finalString query, Ft;^g3N
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finalObject[] parameters){ i-6F:\;
return getHibernateTemplate +E.GLn2/
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().findByNamedQuery(query, parameters); 5Drq9B9;
} {O`w,dMOI
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publicList find(finalString query){ D~$r\]av
return getHibernateTemplate().find #R.-KUW:
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(query); _q{c##Kf
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publicList find(finalString query, finalObject =aoMii
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parameter){ m|:_]/*qE
return getHibernateTemplate().find !=:$lzS^
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(query, parameter); +i2}/s@JJ
} @>)r}b
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public PaginationSupport findPageByCriteria |>JS!NM
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(final DetachedCriteria detachedCriteria){ R5 9S@MsuD
return findPageByCriteria OC<5E121>Y
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); J1:1B,^y
} 1PP $XJtyD
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public PaginationSupport findPageByCriteria dRaNzK)M
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(final DetachedCriteria detachedCriteria, finalint 0 SNIYkGE
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