Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 (:sZ
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 OhwF )p=
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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 tZ8e`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 5D' bJ6PO
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分页支持类: ]QrR1Rg
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java代码: GYK\LHCPd
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package com.javaeye.common.util; |NMO__l@
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import java.util.List; w^;DG
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publicclass PaginationSupport { Y(VO.fVJK
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publicfinalstaticint PAGESIZE = 30; OO-k|\{|
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privateint pageSize = PAGESIZE; g22gIj]
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privateList items; ' [p)N,
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privateint totalCount; ZYMw}]#((E
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privateint[] indexes = newint[0]; Ge \["`;i
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privateint startIndex = 0; 8<dOMp;}r
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public PaginationSupport(List items, int GP,<`l&
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totalCount){ ;=~Xr"(/z
setPageSize(PAGESIZE); ~`cwG`
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setTotalCount(totalCount); S!Jh2tsg`-
setItems(items); 9- )qZ
setStartIndex(0); 8Y{s;U0n
} kiUk4&1
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public PaginationSupport(List items, int T>d.#
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totalCount, int startIndex){ (! KG)!
setPageSize(PAGESIZE); ;ojiJ?jU
setTotalCount(totalCount); Qvqqvk_tv
setItems(items); `
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setStartIndex(startIndex); iHBB,x
} qVgd(?hJ#
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public PaginationSupport(List items, int >k(MUmhX
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totalCount, int pageSize, int startIndex){ S4A q'
setPageSize(pageSize); WES#ZYtT
setTotalCount(totalCount); =r4!V>
setItems(items); q,l)I+
setStartIndex(startIndex); Uems\I0
} sqO<J$tz
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publicList getItems(){ +4)7j&L
return items; #h'@5 l
} PLR0#).n
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publicvoid setItems(List items){ *l+Cl%e
this.items = items; Fo|xzLm9*|
} jna;0)
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publicint getPageSize(){ !a-b6Aa
return pageSize; mG2'Y) Sz
} |m*.LTO
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publicvoid setPageSize(int pageSize){ bbN%$/d
this.pageSize = pageSize; ;_"U "?h_J
} +c$I&JO
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publicint getTotalCount(){ raUs%Y3
return totalCount; eV!L^>>>
} B6M+mx"G
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publicvoid setTotalCount(int totalCount){ \k@$~}xD,
if(totalCount > 0){ *75YGD
this.totalCount = totalCount; yfj(Q s
int count = totalCount / uO(w1Q"^
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pageSize; a)s;dp}T%
if(totalCount % pageSize > 0) 9;=dxWf
count++; /yPXMJ6W~R
indexes = newint[count]; ( [E]_Q
for(int i = 0; i < count; i++){ :0~QRc-u
indexes = pageSize * \;9W.d1iU
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} ${r[!0|
}else{ /n{1o\
this.totalCount = 0; "&o,yd%
} 2xxB\J
} 9Sg<K)Mc
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publicint[] getIndexes(){ 3vic(^Qh
return indexes; `'4)q}bB
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publicvoid setIndexes(int[] indexes){ `:|@Zln
this.indexes = indexes; <M+R\SH-
} CboLH0Fa
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publicint getStartIndex(){ )b4$A:
return startIndex; grom\
} p9[6^rjx8
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publicvoid setStartIndex(int startIndex){ Frm;Ej3?$
if(totalCount <= 0) .qD@
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this.startIndex = 0; p3x?[Ww
elseif(startIndex >= totalCount) c z'5iK
this.startIndex = indexes O<*5$,K9
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[indexes.length - 1]; E5GJi
elseif(startIndex < 0) ZCui Fm
this.startIndex = 0; DDd/DAkCX
else{ VG@};dwbz*
this.startIndex = indexes 6[P-Ny{z
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[startIndex / pageSize]; q!lP"J
} P,xwSvO#M
} &Z^(y}jPr
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publicint getNextIndex(){ KG9t3<-`
int nextIndex = getStartIndex() + zc+@lJy
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pageSize; msx-O=4g
if(nextIndex >= totalCount) yW7'?
return getStartIndex(); l|`^*%W@u6
else Snw3`|Y~<
return nextIndex; 2.I^Xf2
} &9[P-w;7u
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publicint getPreviousIndex(){ PX
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int previousIndex = getStartIndex() - >t+
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pageSize; @tT-JwU
if(previousIndex < 0) hsNWqk qys
return0; D{7w!z
else Qst$S} n
return previousIndex; ^4Uw8-/ 9
} |`O5Xs1{B
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} \_]En43mg
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抽象业务类 FiAY\4
java代码: n> w`26MMp
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/** kPxT"
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* Created on 2005-7-12 np$zo
*/
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package com.javaeye.common.business; (c\hy53dP
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import java.io.Serializable; Rd&9E
import java.util.List; kyYLP"oB=
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import org.hibernate.Criteria; 7{kP}?
import org.hibernate.HibernateException; ht97s
import org.hibernate.Session; uXZg1F)
import org.hibernate.criterion.DetachedCriteria; [3/VCYje
import org.hibernate.criterion.Projections; ]wn/BG)
import N;sm*+r
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org.springframework.orm.hibernate3.HibernateCallback; eCbf9B
import HM[klH]s=
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org.springframework.orm.hibernate3.support.HibernateDaoS "9y(
}
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upport; j f~wBmd7
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import com.javaeye.common.util.PaginationSupport; ,I.WX,OR
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public abstract class AbstractManager extends -%c<IX>z9
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HibernateDaoSupport { Do7=#|bAM
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privateboolean cacheQueries = false; u0s8yPA
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privateString queryCacheRegion; P1>AOH2yG
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publicvoid setCacheQueries(boolean ?V(^YFzZ
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cacheQueries){ zU5Hb2a
this.cacheQueries = cacheQueries; d=O3YNM:v
} ;^){|9@
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