Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 69yTGUG3
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 %z8@;
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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 J8? 6yd-7
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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 %k$+t
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分页支持类: [.dNX
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java代码: T']*h8
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package com.javaeye.common.util; O aF+Z@s
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import java.util.List; >2$Ehw:K^
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publicclass PaginationSupport { 9n8;eE08
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publicfinalstaticint PAGESIZE = 30; {} vl^b
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privateint pageSize = PAGESIZE; \4zvknk<
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privateList items; *xL#1
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privateint totalCount; y7,~7f!N2
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privateint[] indexes = newint[0]; -!;vX
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privateint startIndex = 0; 9Cf^Q3)5o
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public PaginationSupport(List items, int ;F~GKn;}
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totalCount){ xW"J@OiKL
setPageSize(PAGESIZE); Mh3zl
setTotalCount(totalCount); B(^fM!_%-6
setItems(items); (T'inNbJe
setStartIndex(0); mjs*Z{_F^
} iCv &<C@
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public PaginationSupport(List items, int >|z=-hqPK
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totalCount, int startIndex){ TU[f"!z^
setPageSize(PAGESIZE); S@_@hFV jd
setTotalCount(totalCount); #+ n
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setItems(items); }$AC0
setStartIndex(startIndex); @ Cqg2
} ZTt%7K"L
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public PaginationSupport(List items, int q &jW{
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totalCount, int pageSize, int startIndex){ 6{+~B2Ef
setPageSize(pageSize); =797;|B H
setTotalCount(totalCount);
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setItems(items); xZ9y*Gv\=
setStartIndex(startIndex); \V:
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} A9lqVMp64
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publicList getItems(){ YrZAy5\
return items; cMK6
} ?cg+RNI
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publicvoid setItems(List items){ M6DyOe<
this.items = items; G9VzVx#T#
} CqrmdWN
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publicint getPageSize(){ ]/d2*#
return pageSize; Th,2gX9
} UI;!_C_
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publicvoid setPageSize(int pageSize){ |<BTK_R
this.pageSize = pageSize; U*a!Gn7l
} ={feN L
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publicint getTotalCount(){ 8,kbGlSD
return totalCount; Bwll
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} vZ|-VvG
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publicvoid setTotalCount(int totalCount){ 4]
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if(totalCount > 0){ p1Lx\
this.totalCount = totalCount;
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int count = totalCount / \=5CNe
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pageSize; "aa6W
if(totalCount % pageSize > 0) 1bj75/i<6
count++; 1U"Y'y2
indexes = newint[count]; !' sDqBZ&7
for(int i = 0; i < count; i++){ -@J;FjrXmP
indexes = pageSize * 9"V27"s
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} da[l[b;
}else{ sDbALAp
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this.totalCount = 0; _0vXujz
} Hs-NP#I
} )n0g6
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publicint[] getIndexes(){ ,][+:fvS
return indexes; GXHk{G@TS
} &Rn/c}[{
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publicvoid setIndexes(int[] indexes){ {[Yv@CpN
this.indexes = indexes; yY&(?6\{<<
} 3q1O:b^eo
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publicint getStartIndex(){ twO)b"0
return startIndex; hc[GpZcw,
} ~i
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publicvoid setStartIndex(int startIndex){ '0o`<xW
if(totalCount <= 0) S2<(n,"
this.startIndex = 0; z1V 0WDVm
elseif(startIndex >= totalCount) BB|{VwN
this.startIndex = indexes ".w*_1G7U
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[indexes.length - 1]; &Vonu*
elseif(startIndex < 0) {b#c0>.8-
this.startIndex = 0; 8^4X/n
else{ ::M/s#-@
this.startIndex = indexes zBjqYqZ<+
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[startIndex / pageSize]; LRbevpZ,
} WO}JIExy
} 1":{$A?OB
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publicint getNextIndex(){ U7ajDw
int nextIndex = getStartIndex() + B8TI 5mZ4
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pageSize; qc`_&!*D
if(nextIndex >= totalCount) kYR&t}jlCg
return getStartIndex(); j+c)%
else PN.=])7T
return nextIndex; "3hw]`a}
} %@rh\Z
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publicint getPreviousIndex(){ `__CL
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int previousIndex = getStartIndex() - ?Z14l0iZ%d
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pageSize; U}qW9X;o
if(previousIndex < 0) iSsy_ |
return0; 3cfkJ|fuwe
else O%+:fJz6wI
return previousIndex; m&$H?yXW>
} Z-vzq;
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} U2Ur N?T
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抽象业务类 \|T0@V
java代码: D(r|sw
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/** glv(`cQ
* Created on 2005-7-12 3~ZtAgih%
*/ :X$&gsT/,
package com.javaeye.common.business; m_]"L
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import java.io.Serializable; 5w1=j\oq
import java.util.List; "1[N;|xa
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import org.hibernate.Criteria; +HfjnEbtBs
import org.hibernate.HibernateException; aG"UV\
import org.hibernate.Session; m|-O/6~
import org.hibernate.criterion.DetachedCriteria; %ZQl.''ISa
import org.hibernate.criterion.Projections; APLu?wy7s5
import fIBLJ53
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org.springframework.orm.hibernate3.HibernateCallback; Z
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import %d?%^)
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org.springframework.orm.hibernate3.support.HibernateDaoS 60p1.;'/a
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upport; kQH!`-n:T
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import com.javaeye.common.util.PaginationSupport; fO:*85%}7
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public abstract class AbstractManager extends *PMql $
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HibernateDaoSupport { #Y{"`5>
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privateboolean cacheQueries = false; (Ux%7H_d
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privateString queryCacheRegion; Cn_Mz#Z
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publicvoid setCacheQueries(boolean L@2H>Lh35
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cacheQueries){ v\HGL56T
this.cacheQueries = cacheQueries; Q2NS> [
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publicvoid setQueryCacheRegion(String p,4z;.s$
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queryCacheRegion){ SOUA,4
this.queryCacheRegion = =-:o?&64
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queryCacheRegion; R4v=i)A~Z
} C2b.([HE
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publicvoid save(finalObject entity){ U}5uy9A
getHibernateTemplate().save(entity); JZ c5U}i
} M.128J+xfS
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publicvoid persist(finalObject entity){ ,{oANqP
getHibernateTemplate().save(entity); `#(4K4]1.
} l,/5$JGnk
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publicvoid update(finalObject entity){ tl4;2m3w
getHibernateTemplate().update(entity); SMhT>dB
} nBD7
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publicvoid delete(finalObject entity){ G?"1
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getHibernateTemplate().delete(entity); h?R-t*G?
} 6iTDk
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publicObject load(finalClass entity, 97BL%_^k
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finalSerializable id){ O/<jt'
return getHibernateTemplate().load kO5KZ;+N-
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(entity, id); y=&)sq
} k9bU<
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publicObject get(finalClass entity, FINM4<s)
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finalSerializable id){ yrIT4y
return getHibernateTemplate().get I|PiZ1]2Y
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(entity, id); S\f^y8*<
} ]xS< \{og
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publicList findAll(finalClass entity){ c]n4vhUa5
return getHibernateTemplate().find("from O+e8}Tmm
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" + entity.getName()); `\qU.m0(j
} ypsCyDQK`
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publicList findByNamedQuery(finalString }tJ:-!*2
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namedQuery){ WL7:22nSHa
return getHibernateTemplate Jne)?Gt
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().findByNamedQuery(namedQuery); 7.=u:PK7kM
} ``NjNd
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publicList findByNamedQuery(finalString query, Kc(_?`
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finalObject parameter){ MBg^U<t8
return getHibernateTemplate ^*0;Z<_
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().findByNamedQuery(query, parameter);
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