Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Z%MP:@z
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 -`B|$ W
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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 pXCmyLQ
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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 q=E<y
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分页支持类: #Gs] u
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java代码: xq.,7#3
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package com.javaeye.common.util; !B(6
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import java.util.List; A3 bE3Fk$
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publicclass PaginationSupport { 2rf-pdOvG
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publicfinalstaticint PAGESIZE = 30; 5+'1 :Sa(i
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privateint pageSize = PAGESIZE; _w=si?q
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privateList items; 3ePG=^K^
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privateint totalCount; `(EY/EsY
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privateint[] indexes = newint[0]; BD9W-mF
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privateint startIndex = 0; &aaXw?/zr
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public PaginationSupport(List items, int S=ebht=
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totalCount){ !,PG!Gnl
setPageSize(PAGESIZE); y'pAhdF
setTotalCount(totalCount); InMF$pw
setItems(items); : }v&TQ
setStartIndex(0); ^c!"*L0E
} @]t} bF]
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public PaginationSupport(List items, int vu;pILN
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totalCount, int startIndex){ E=3<F_3W
setPageSize(PAGESIZE); B_anO{3$4
setTotalCount(totalCount); yNP
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setItems(items); 3@*J=LGhKc
setStartIndex(startIndex); *pCT34'--
} {Tl5,CAz
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public PaginationSupport(List items, int <V#9a83JP
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totalCount, int pageSize, int startIndex){ x-,+skZs
setPageSize(pageSize); Jc"xH~,
setTotalCount(totalCount); Ro`9Ibqr
setItems(items); /mX/
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setStartIndex(startIndex); 0
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} !v;N@C3C
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publicList getItems(){ !jGe_xB}~
return items; ,&rlt+wE
} (;;%B =
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publicvoid setItems(List items){ qI"Xh"
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this.items = items; @k>}h\w
} %{WS7(si
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publicint getPageSize(){ lO! Yl:;m%
return pageSize; 85+'9#~!
} oOlqlv
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publicvoid setPageSize(int pageSize){ E*'sk
this.pageSize = pageSize; xr}3vJ7
} ?zGx]?1P1<
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publicint getTotalCount(){ |*ss`W7F,2
return totalCount; :jlKj} 4A
} PTrKnuM\J_
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publicvoid setTotalCount(int totalCount){ L&ucTc=
if(totalCount > 0){ 7ESSx"^B
this.totalCount = totalCount; F_.rLgGY
int count = totalCount / CT,P Q
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pageSize;
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if(totalCount % pageSize > 0) P0VXHE1p
count++; $`,10uw
indexes = newint[count]; .}!"J`{W
for(int i = 0; i < count; i++){ Z"j #kaXA
indexes = pageSize * p5`iq~e9
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} C{(&Yy"
}else{ pURtk-Fr2
this.totalCount = 0; WxLbf+0o
} qF'lh
} oGt,^!V1
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publicint[] getIndexes(){ 'EzKu~*
return indexes; =rz7 x
} 2%4u/
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publicvoid setIndexes(int[] indexes){ a',6WugIP
this.indexes = indexes; OlRtVp1
} !r\u,l^
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publicint getStartIndex(){ r@")MOGc
return startIndex; (;\"
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} 8Of.n7{
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publicvoid setStartIndex(int startIndex){ gOiZ8K!
if(totalCount <= 0) ZHu"&&
this.startIndex = 0; >b\{y}[
elseif(startIndex >= totalCount) ;] v{3m
this.startIndex = indexes |5il5UP
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[indexes.length - 1]; Qa`+-Wu8
elseif(startIndex < 0) U{1%ldOJ%
this.startIndex = 0; xB5qX7*.
else{ co^bS;r
this.startIndex = indexes ^IQtXae6M
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[startIndex / pageSize]; gq%U5J"x;J
} ?D>%+rK8c
} `JQw]\f4>
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publicint getNextIndex(){ M./1.k&@
int nextIndex = getStartIndex() + /{6&99SJcc
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pageSize; l,fwF ua
if(nextIndex >= totalCount) &{4KymB:
return getStartIndex(); >]{{5oOQ>
else /(oxK>*F
return nextIndex; 8*zORz
} fQm3D%
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publicint getPreviousIndex(){ wjtFZGx&
int previousIndex = getStartIndex() - {Jbouj?V!
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pageSize; %-?k [DL6
if(previousIndex < 0) u.yYE,9
return0; oU l0w~Xn
else tt4Z
return previousIndex; %Ev)Hk
} g)!d03Qoy
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} 8I8{xt4
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抽象业务类 >O]u4G!
java代码: P*|qbY
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/** Vp$<@Y
* Created on 2005-7-12 /np05XhEa
*/ .(^%M
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package com.javaeye.common.business; vRkVPkZ6|
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import java.io.Serializable; a#D \8;
import java.util.List; + L[a
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import org.hibernate.Criteria; ~%eZQgqA*
import org.hibernate.HibernateException; =Q,D3F
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import org.hibernate.Session;
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import org.hibernate.criterion.DetachedCriteria; D dh
import org.hibernate.criterion.Projections; \J(kevX
import _TwEym.V
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org.springframework.orm.hibernate3.HibernateCallback; /z
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org.springframework.orm.hibernate3.support.HibernateDaoS [jz@d\k$_
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upport; }0[<xo>K
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import com.javaeye.common.util.PaginationSupport; `*o ko[\3
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public abstract class AbstractManager extends sFPh?
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HibernateDaoSupport { xsIfR3Ze9
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privateboolean cacheQueries = false; eN'b"_D
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privateString queryCacheRegion; Z*R~dHr
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publicvoid setCacheQueries(boolean sa}.o Zp Q
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cacheQueries){ hwQrmVwvP
this.cacheQueries = cacheQueries; mGpBj9jr1
} s"`Oj5
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publicvoid setQueryCacheRegion(String },=ORIB B:
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queryCacheRegion){ 6<%b}q9Mo
this.queryCacheRegion = ~Qd|.T
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queryCacheRegion; HBNX a
} |hS^eK_
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publicvoid save(finalObject entity){ }tW1\@
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getHibernateTemplate().save(entity); 3, 3n
} l\"CHwN?Y
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publicvoid persist(finalObject entity){ Mr*CJgy
getHibernateTemplate().save(entity); .E9$j<SP-
} )8taMC:H^
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publicvoid update(finalObject entity){ uF ;8B]"
getHibernateTemplate().update(entity); }R~C<3u\2
} og1Cj{0
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publicvoid delete(finalObject entity){ g W?Hd/
getHibernateTemplate().delete(entity); sC ?e%B
} r3Kx
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publicObject load(finalClass entity, ~<}?pDA}~
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finalSerializable id){ i)/#u+Y1P
return getHibernateTemplate().load (S?qxW?
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(entity, id); ?y@;=x!'
} |RBL5,t^
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publicObject get(finalClass entity, J[UTn'M8]
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finalSerializable id){ =I9hGj6
return getHibernateTemplate().get A9WOu*G1O
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(entity, id); BwYR"
} H?
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publicList findAll(finalClass entity){ djn<