Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 32-3C6f@oZ
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 m)[wZP*e
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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 G5QgnxwP2
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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 '/yx_RK2?
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分页支持类: : DX/r
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java代码: t6L^
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package com.javaeye.common.util; |Qt`p@W
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import java.util.List; 1(;33),P8
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publicclass PaginationSupport { l&^[cR
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publicfinalstaticint PAGESIZE = 30; 4Utx
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privateint pageSize = PAGESIZE; 4Tzu"y
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privateList items; 0.Ol@fO
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privateint totalCount; 3d)+44G_)
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privateint[] indexes = newint[0]; _OxnHf:|
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privateint startIndex = 0; -_4jJxh=OB
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public PaginationSupport(List items, int $evuPm8G
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totalCount){ O*n%2Mam
setPageSize(PAGESIZE); p2NB~t7Z
setTotalCount(totalCount); 1d@^,7MF-
setItems(items); J>|:T
setStartIndex(0); f?<M3P
} $E~Lu$|
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public PaginationSupport(List items, int `SS~=~WY
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totalCount, int startIndex){ NW>:Lz
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setPageSize(PAGESIZE); 08jUVHdt
setTotalCount(totalCount); 2|NyAtPb5
setItems(items); QsF<=b~
setStartIndex(startIndex); c{4nW|/W
} F=T.*-oS3
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public PaginationSupport(List items, int pu)9"Ad[ G
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totalCount, int pageSize, int startIndex){ h}%M
setPageSize(pageSize); xo_k"'f+
setTotalCount(totalCount); \-iUuHP
setItems(items); cp?P@-
setStartIndex(startIndex); z?_}+
} .idl@%
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publicList getItems(){ Sl<-)a:
return items; NCM{OAjS5U
} !zJ67-G
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publicvoid setItems(List items){ 0JRBNh
this.items = items; ZG[0rvW
} Vq7
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publicint getPageSize(){ BMj&*p8R
return pageSize; ]<_!@J6k
} %C][E^9
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publicvoid setPageSize(int pageSize){ ?d#(ian
this.pageSize = pageSize; ?'#;Y"RT
} U)%u`C0
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publicint getTotalCount(){ Ay6rUN1ef
return totalCount; ?#c@Ag%
} `V_/Cz_}D
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publicvoid setTotalCount(int totalCount){ !skWe~/
if(totalCount > 0){ ]~M{@h!<
this.totalCount = totalCount; 257;@;
int count = totalCount / i R5soIR
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pageSize; v;qL?_:=c
if(totalCount % pageSize > 0) vHe.+XY
count++; .MPOUo/e
indexes = newint[count]; O
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for(int i = 0; i < count; i++){ p[VCt" j
indexes = pageSize * EGr5xR-
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} ~9;mZi1-
}else{ 8A]q!To
this.totalCount = 0; ;B7|tajd
} G8-d%O p
} 5e8-?w%e
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publicint[] getIndexes(){ (qONeLf%
return indexes; os ud
} i1&noRGl
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publicvoid setIndexes(int[] indexes){ ,ZW.P`
this.indexes = indexes; a#GqJ?nY
} (xJBN?NRO
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publicint getStartIndex(){ Cu<ojN- $
return startIndex; .z7f_KX^
} pnb$lpxt
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publicvoid setStartIndex(int startIndex){ sh3}0u+
if(totalCount <= 0) Ec/+ 9H6g
this.startIndex = 0; 'N/%SRk
elseif(startIndex >= totalCount) JkEQ@x
this.startIndex = indexes -;.fU44O[#
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[indexes.length - 1]; t$D[,$G9
elseif(startIndex < 0) ]V\g$@
this.startIndex = 0; ~;a* Oxt
else{ n!orM5=:O
this.startIndex = indexes uV\#J{'*
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[startIndex / pageSize]; &G,v*5N8$K
} L7'n<$F
} "d*
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publicint getNextIndex(){ ht!:e>z&4
int nextIndex = getStartIndex() + goWt!,&f
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pageSize; R
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if(nextIndex >= totalCount) V:np cKpu
return getStartIndex(); iKO~#9OF
else [qo*,CRz
return nextIndex; Qd=/e pkm
} 8[XNFFUZs
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publicint getPreviousIndex(){ E_*T0&P.P
int previousIndex = getStartIndex() -
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pageSize; [)KfRk?};2
if(previousIndex < 0) 32J
return0; r8E!-r}rno
else ku=q:ryO
return previousIndex; zy5bDL -
} }0*7bb
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} ";%1sK
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抽象业务类 yw^,@'
java代码: _z<q9:
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/** [:Y^0[2
* Created on 2005-7-12 {rr\hl-$
*/ E_#&L({|@
package com.javaeye.common.business; q9Wtu7/
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import java.io.Serializable; =Ih_[$1dw
import java.util.List; oWT0WS
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import org.hibernate.Criteria; 0_)\ e
import org.hibernate.HibernateException; NIGFu{S
import org.hibernate.Session; |hAGgo/03
import org.hibernate.criterion.DetachedCriteria; (yVI<Os{a
import org.hibernate.criterion.Projections; dv:&N
import jk?(W2c#{
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org.springframework.orm.hibernate3.HibernateCallback; o
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import q2Dg~et
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org.springframework.orm.hibernate3.support.HibernateDaoS -.G0k*[d
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upport; f+RDvgkKU
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import com.javaeye.common.util.PaginationSupport; 9w|q':<
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public abstract class AbstractManager extends (n G
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HibernateDaoSupport { iWEYSi\)n
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privateboolean cacheQueries = false; eAEVpC2
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privateString queryCacheRegion; xC]/i(+bA
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publicvoid setCacheQueries(boolean "O{sdVS
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cacheQueries){ ewR0e.g
this.cacheQueries = cacheQueries; bL<cgtz7)
}
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publicvoid setQueryCacheRegion(String a'r\e2/e?H
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queryCacheRegion){
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this.queryCacheRegion = 0!T $Ef
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queryCacheRegion; "@_f>3z
} ?uLqB@!2
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publicvoid save(finalObject entity){ iW)Ou?aS
getHibernateTemplate().save(entity); hi%>&i*
} {WChD&v
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publicvoid persist(finalObject entity){ ;F-kE4w
getHibernateTemplate().save(entity); s5 BV8 M
} {$JIR}4S
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publicvoid update(finalObject entity){ NoT oLt\
getHibernateTemplate().update(entity); lH8?IkK,g
} CS
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publicvoid delete(finalObject entity){ #=2~MXa@z7
getHibernateTemplate().delete(entity); 5;+Bl@zGu
} X|:O`b$G
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publicObject load(finalClass entity, L!5HE])<)
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finalSerializable id){ ;%&@^;@k%
return getHibernateTemplate().load 4_eq@'9-q
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(entity, id); G!uxpZ
} +Aq}BjD#
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publicObject get(finalClass entity, 00ho*p!E'
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finalSerializable id){ 3z#16*
return getHibernateTemplate().get KR63W:Z\'
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(entity, id); wiZK-#\x
} 3i<*,@CY
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publicList findAll(finalClass entity){ &e{&<ZVR
return getHibernateTemplate().find("from {|50&]m
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" + entity.getName()); :7 maN^
} i=+ "[ h^
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publicList findByNamedQuery(finalString #Uo
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<