Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 u.yjk/jF
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ;{j@ia
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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 ->9waXRDz)
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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 ;owU]Xk%8K
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分页支持类: ]39])ul
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java代码: r?%,#1|$$
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package com.javaeye.common.util; k*u4N
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import java.util.List; P[K42mm
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publicclass PaginationSupport { =WEWs4V5A
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publicfinalstaticint PAGESIZE = 30; P;bOtT --
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privateint pageSize = PAGESIZE; .VA'W16
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privateList items; tq.g4X ;_
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privateint totalCount; Bk;/>gD
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privateint[] indexes = newint[0]; 19]O;
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privateint startIndex = 0; %) /Bl.{}<
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public PaginationSupport(List items, int W<\*5oB%H
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totalCount){ mV;)V8'
setPageSize(PAGESIZE); GhC%32F
setTotalCount(totalCount); ;s^F:O
setItems(items); ^!7|B3`
setStartIndex(0); m?y'Y`
} lPA:ho/`:
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public PaginationSupport(List items, int 5?HoCz]l
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totalCount, int startIndex){ i*61i0
setPageSize(PAGESIZE); Tqm)- |[
setTotalCount(totalCount); jRBKy8?[C
setItems(items); S<o\.&J
setStartIndex(startIndex); \E8CC>Jd
} S{S.H?{F
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public PaginationSupport(List items, int 1Gp|_8
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totalCount, int pageSize, int startIndex){ 1#V&'A
setPageSize(pageSize); oTb4 T=
setTotalCount(totalCount); f-5}`)`.+
setItems(items); yv(\5)XF
setStartIndex(startIndex); '/GZ/$a_l
} GmdS~Fhp
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publicList getItems(){ D.,~I^W
return items; YPmgR]=6
} (i@B+c
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publicvoid setItems(List items){ &d 6
this.items = items; G|LcTV
} PbIir=
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publicint getPageSize(){ ^~DClZ
return pageSize; 0#!Z1:Y
} QN8.FiiD
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publicvoid setPageSize(int pageSize){ gPY Cw?zQ
this.pageSize = pageSize; /rzZU} 3[
} @YI-@
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publicint getTotalCount(){ Nrfj[I
return totalCount; _<7e5VR
} ;#n+$Q#:
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publicvoid setTotalCount(int totalCount){ +7$zL;ph=n
if(totalCount > 0){ e)kVS}e?
this.totalCount = totalCount; vFH1hm
int count = totalCount / P3+?gW'
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pageSize; dL|*#e
if(totalCount % pageSize > 0) f1RX`rXf
count++; JAS!eF
indexes = newint[count]; ;2Za]%'
for(int i = 0; i < count; i++){ *v0}S5^/"
indexes = pageSize * h%!N!\
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} `t Zw(Z=h
}else{ }Oe9Zq
this.totalCount = 0; !~a1xI~s
} {f[X)
} S1E=EVG
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publicint[] getIndexes(){ *S\/l-D
return indexes; :'K%&e?7s
} $#HUxwx4
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publicvoid setIndexes(int[] indexes){ Z)dE#A_X
this.indexes = indexes; hgI;^ia
} |C3~Q{A
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publicint getStartIndex(){ >o8N@`@VK-
return startIndex; 8\9s,W:5
} c@)}zcw*
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publicvoid setStartIndex(int startIndex){ YY9Ub
if(totalCount <= 0) x
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this.startIndex = 0; I;3Uzv
elseif(startIndex >= totalCount) [LrA_N
this.startIndex = indexes L7 g4'
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[indexes.length - 1]; Z*M-PaU}
elseif(startIndex < 0) #NR9\
this.startIndex = 0; 8~eYN-#W&
else{ I+FQ2\J*H
this.startIndex = indexes <:Z-zQp)?
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[startIndex / pageSize]; (g#,AX
} $S{]` +
} sA[eKQjaD
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publicint getNextIndex(){ Bw8&Amxx:
int nextIndex = getStartIndex() + %N0cp@Vz
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pageSize; k5TPzm=y{
if(nextIndex >= totalCount) OVf%m~%&s
return getStartIndex(); @Yy']!Ju
else 5Q.z#]Lg
return nextIndex; ey! {
} iTg7@%
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publicint getPreviousIndex(){ \<4Hp_2?
int previousIndex = getStartIndex() - pi?[jU[Tn
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pageSize; r4(Cb_
if(previousIndex < 0) p@bcf5'
return0; d@0&
else d vTsbs/6
return previousIndex; 4.}J'3 .
} :c^9\8S
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} [Csv/
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抽象业务类 XVNJ3/
java代码: )Y:9sd8g7
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/** _aLml9f
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* Created on 2005-7-12 b+qdl`Vd
*/ m_n*_tX
package com.javaeye.common.business; /vG)n9Rc
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import java.io.Serializable; j,BiWgj$8
import java.util.List; !;ipLC;e}
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import org.hibernate.Criteria; P-~kxb9aa
import org.hibernate.HibernateException; Lm}J&^>
import org.hibernate.Session; eFiUB
import org.hibernate.criterion.DetachedCriteria; &@anv.D
import org.hibernate.criterion.Projections; G,6Zy-Y9
import O.g!k"nas&
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org.springframework.orm.hibernate3.HibernateCallback; Jf|6 FQo&
import eX9Hwq4X44
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org.springframework.orm.hibernate3.support.HibernateDaoS 5$C]$o}
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upport; 07:N)y,
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import com.javaeye.common.util.PaginationSupport; V=LJ_T"z0
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public abstract class AbstractManager extends U`h> [9
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HibernateDaoSupport { x!@P|c1nKC
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privateboolean cacheQueries = false; =
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