Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ',RR*{I
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 n_] OYG>U
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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 9Bmgz =8
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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 }fxH>79g
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分页支持类: 8c$IsvJg
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java代码: 8i"{GGVC
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package com.javaeye.common.util; K<_H`k*x
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import java.util.List; +~/zCJ;F
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publicclass PaginationSupport { f%auz4CZz
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publicfinalstaticint PAGESIZE = 30; eaiz
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privateint pageSize = PAGESIZE; Yc5$915
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privateList items; MDCf(LhEH
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privateint totalCount; ,!py
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privateint[] indexes = newint[0]; `") I[h
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privateint startIndex = 0; _bz,G"w+:
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public PaginationSupport(List items, int 9VY_gi=vL
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totalCount){ a:]yFi:Su
setPageSize(PAGESIZE); u1kbWbHu(
setTotalCount(totalCount); dCyQC A[
setItems(items); UX9o
setStartIndex(0); @<sP1`1
} +%~g$#tlJo
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public PaginationSupport(List items, int sR0nY8@F
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totalCount, int startIndex){ 3G&1. 8
setPageSize(PAGESIZE); \ d;Ow8%d/
setTotalCount(totalCount); %qv7;E2C
setItems(items); d$Xvax,C
setStartIndex(startIndex); TP^0`L
}
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public PaginationSupport(List items, int _[7uLWyC9
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totalCount, int pageSize, int startIndex){ m
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setPageSize(pageSize); #>V;ZV5"
setTotalCount(totalCount); Mf63 59
setItems(items); U#P#YpD;==
setStartIndex(startIndex); f<'C<xnf
} w?C\YKF7
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publicList getItems(){ /P%:u0fX,
return items; hU{%x#8}lK
} s5dh]vNN
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publicvoid setItems(List items){ \CGcP
this.items = items; #]'xUgcE9
} D.e*IP1R
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publicint getPageSize(){ |+bG~~~%j
return pageSize; H6eGLg={
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publicvoid setPageSize(int pageSize){ !Z ZA I_N
this.pageSize = pageSize; 4Ojw&ys@V
} @!da1jN
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publicint getTotalCount(){ ;~J~g#
return totalCount; Vmc)or*#
} /WfxI>v
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publicvoid setTotalCount(int totalCount){ c"ztrKQQ
if(totalCount > 0){ Q/9b'^UJ
this.totalCount = totalCount; Dhoj|lc
int count = totalCount / 8E+l;2
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pageSize; w$4Lu"N:
if(totalCount % pageSize > 0) (% P=#vZ
count++; JPG!cX%
indexes = newint[count]; O@rb4(
for(int i = 0; i < count; i++){ [Bo$?
indexes = pageSize * Hi9z<l=$
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} W\7*T1TDj
}else{ $NHWg(/R@
this.totalCount = 0; +kL(lBv'
} {@AcL:Eit
} 1`{ib
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publicint[] getIndexes(){ (xed(uFEK
return indexes; ;G]'}$`/q
} {6sfa?1j
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publicvoid setIndexes(int[] indexes){ 17oxD
this.indexes = indexes; m=B0!Z1xx
} di2=P)3
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publicint getStartIndex(){ u0b-JJ7)BQ
return startIndex; w.p'Dpw
} C:MGi7f
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publicvoid setStartIndex(int startIndex){ FaE orQ
if(totalCount <= 0) wtS*w
this.startIndex = 0; [uQZD1<q
elseif(startIndex >= totalCount) UE w3AO
this.startIndex = indexes 79g>7<vp
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[indexes.length - 1]; &Ld8Z9IeFp
elseif(startIndex < 0) d/rz0L
this.startIndex = 0; [_b='/8
else{ J6D$ i+
this.startIndex = indexes
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[startIndex / pageSize]; Lu.tRZ`$38
} C)p<M H<
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publicint getNextIndex(){ ky$:C,1t
int nextIndex = getStartIndex() + w]o5L
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pageSize; wg0.i?R-]
if(nextIndex >= totalCount) ik0Q^^1?Y
return getStartIndex(); .eB"la|d
else $'{`i5XB
return nextIndex; ]V^.!=gh$
}
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publicint getPreviousIndex(){ Oa}V>a
int previousIndex = getStartIndex() - a:-)+sgHw
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pageSize; NO+
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if(previousIndex < 0) 8R)D ! 7[l
return0; jI{~s]Q
else gaw4NZd)0
return previousIndex; Yt/SnF
} I| W'n-4Y
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} [j=,g-EOA
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抽象业务类 UKKSc>D1
java代码: YH'$_,8peM
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/**
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* Created on 2005-7-12 && DD
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package com.javaeye.common.business; 8:P*z
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import java.io.Serializable; pwFU2}I
import java.util.List; 3C rQBIj1
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import org.hibernate.Criteria; =mHkXHE~:
import org.hibernate.HibernateException; `%t$s,TiP
import org.hibernate.Session; T|o`a+?
import org.hibernate.criterion.DetachedCriteria; XOysgX0g
import org.hibernate.criterion.Projections; i<4>\nc
import i\=z'
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org.springframework.orm.hibernate3.HibernateCallback; kgbobolA
import &jV9*
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org.springframework.orm.hibernate3.support.HibernateDaoS 0W T#6D
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upport; XYqpI/s
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import com.javaeye.common.util.PaginationSupport; !;o\5x<'$O
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public abstract class AbstractManager extends AVXX\n\_
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HibernateDaoSupport { _\
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privateboolean cacheQueries = false; v!NB~"LQ
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privateString queryCacheRegion; ! jbEm8bt
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