Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 E1,Sr?'
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 6#NptXB
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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 M[wd.\
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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 aL63=y
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分页支持类: +8+@Az[e0
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java代码: 8=
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package com.javaeye.common.util; uo`O$k<;
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import java.util.List; h-rPLU;Bw
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publicclass PaginationSupport { Y..
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publicfinalstaticint PAGESIZE = 30; ,Lt+*!;m
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privateint pageSize = PAGESIZE; "zSi9]j
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privateList items; P19nF[A
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privateint totalCount; ~GL"s6C$`;
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privateint[] indexes = newint[0]; aL\vQ(1zO
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privateint startIndex = 0; ;k6>*wFl|!
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public PaginationSupport(List items, int r3a$n$Qw
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totalCount){ }kg?A oo
setPageSize(PAGESIZE); hQ!sl O
setTotalCount(totalCount); ~RSOUrR
setItems(items); 0i}4T:J@`
setStartIndex(0); Pkx*1.uo
} 57/9i>
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public PaginationSupport(List items, int 3eUTV<!
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totalCount, int startIndex){ ^4@~\#$z
setPageSize(PAGESIZE); vywd&7gK
setTotalCount(totalCount); Do@:|n
setItems(items); SJY<#_b
setStartIndex(startIndex); R["2kEF
} 5m,{?M`
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public PaginationSupport(List items, int neW_mu;~Z
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totalCount, int pageSize, int startIndex){ <1tFwC|4BJ
setPageSize(pageSize); *hI
setTotalCount(totalCount); A|sTnhp~
setItems(items); i_OoR"J%
setStartIndex(startIndex); fm2,Mx6
} 5>.)7D%
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publicList getItems(){ wT?.Mte
return items; *@'4 A :A
} 41luFtE9
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publicvoid setItems(List items){ [; M31b3
this.items = items; ]=v_u9;
} k)D:lpxv
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publicint getPageSize(){ jbQ2G|:Q
return pageSize; \-kX-Tq
} 5p6Kq=jhb
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publicvoid setPageSize(int pageSize){ #~um F%#
this.pageSize = pageSize; ?qr-t+
} @
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publicint getTotalCount(){ |B&KT
return totalCount; %=x|.e@J
} UeB8|z
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publicvoid setTotalCount(int totalCount){ |fdr\t#'~
if(totalCount > 0){ fII;t-(x
this.totalCount = totalCount; t
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int count = totalCount / dj*%^cI
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pageSize; ;\7TQ9z
if(totalCount % pageSize > 0) 6'y+Ev$9
count++; zI/)#^ SQ
indexes = newint[count]; 0wZ_;FN*-
for(int i = 0; i < count; i++){ 6zs&DOB
indexes = pageSize * %&KJtKe
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} XQ.czj
}else{ $Gb] K{e
this.totalCount = 0; _+0l+a*D
} |+Z,
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publicint[] getIndexes(){ 03?TT,y$
return indexes; jR7 , b5
} <N"t[N70;
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publicvoid setIndexes(int[] indexes){ IdTeue
this.indexes = indexes; 4kGA`XhS*
} n k]tq3.[
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publicint getStartIndex(){ F\!;}z
return startIndex; \Ku=a{Ne
} bHcb+TR3
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publicvoid setStartIndex(int startIndex){ QC0^G,9.
if(totalCount <= 0) T[M?:~
this.startIndex = 0; nt\6o?W
elseif(startIndex >= totalCount) "~x\bSY
this.startIndex = indexes ]c{Zh?0
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[indexes.length - 1]; 3/8o)9f.
elseif(startIndex < 0) DQW^;Ls
this.startIndex = 0; 6Uq@v8mh
else{ VKy:e.
this.startIndex = indexes B`OggdE
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[startIndex / pageSize]; 1 GUF,A+_O
} r$=MBeT
} _F
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publicint getNextIndex(){ jEfrxlj
int nextIndex = getStartIndex() + .!0),KmkK
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pageSize; a$Eqe_
if(nextIndex >= totalCount) F7J-@T<
return getStartIndex(); &,+G}
else `*e',j2}UU
return nextIndex; 5sC{5LJzC
} q /EK]B
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publicint getPreviousIndex(){ '5wa"/ ?w
int previousIndex = getStartIndex() - uRG0}>]|U
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pageSize; PCnE-$QH
if(previousIndex < 0) K^t M$l\
return0; Py\xN
else $K^"a
return previousIndex; Z@&_ T3M
} rz+G]J
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} @PuJre4!;L
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抽象业务类 |J2_2a/"
java代码: a*hOT_;#
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/** bW<_K9"
* Created on 2005-7-12 [CBA Lj5
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package com.javaeye.common.business; x3T)/'(
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import java.io.Serializable; >i~W$;t
import java.util.List; `,H\j?
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import org.hibernate.Criteria; NuI9"I/
import org.hibernate.HibernateException; uSbOGhP
import org.hibernate.Session; 9Am&G
import org.hibernate.criterion.DetachedCriteria; 4IG=mG)
import org.hibernate.criterion.Projections; >x@]wsj
import W%b<(T;
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org.springframework.orm.hibernate3.HibernateCallback; aq~hl7MTj
import W?~G_4
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org.springframework.orm.hibernate3.support.HibernateDaoS 3 1KMn
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upport; s4P8PDhz
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import com.javaeye.common.util.PaginationSupport; MBs]<(RJZ
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public abstract class AbstractManager extends \k0%7i[nZ/
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HibernateDaoSupport { ZT4._|2
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privateboolean cacheQueries = false; "o#"u[W,
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privateString queryCacheRegion; K@U"^
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publicvoid setCacheQueries(boolean 2_;.iH
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cacheQueries){ fL
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this.cacheQueries = cacheQueries; N72z5[..
} 85$MHod}[,
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publicvoid setQueryCacheRegion(String [J\5DctX;c
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queryCacheRegion){ :Gqyj_|<
this.queryCacheRegion = ]Rohf WHX
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queryCacheRegion;
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} -liVYI2s
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publicvoid save(finalObject entity){ 1QtT*{zm$F
getHibernateTemplate().save(entity); }Xyu"P
} w7p%6m
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publicvoid persist(finalObject entity){ &tw.]3
getHibernateTemplate().save(entity); r!V#@Md
} U`K5 DZ~
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publicvoid update(finalObject entity){ 1c~c_Cc4
getHibernateTemplate().update(entity); \2-!%i,
} ].]yqD4P
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publicvoid delete(finalObject entity){ M |?qSFv:
getHibernateTemplate().delete(entity); g[*+R9'
} #tN)OZA
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publicObject load(finalClass entity, 'Fo*h6=
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finalSerializable id){ c.m '%4
return getHibernateTemplate().load +`kfcA#pi
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(entity, id); K8Gc5#OF
} |@]J*Kh
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publicObject get(finalClass entity, '[I_Iu#,
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finalSerializable id){ hEsCOcEG
return getHibernateTemplate().get YZ:YYcr
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(entity, id); w4:S>6X
} ]p(+m_F
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publicList findAll(finalClass entity){ x?KgEcnw2X
return getHibernateTemplate().find("from {2R b^K
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" + entity.getName()); JTNQz
} E{^*^+c"h
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publicList findByNamedQuery(finalString }D xXt
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namedQuery){ :g2?)Er-
return getHibernateTemplate Wd_bDZQ
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().findByNamedQuery(namedQuery); -LzHCO/7(
} rK)So#'
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publicList findByNamedQuery(finalString query, PH9MB
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finalObject parameter){ =`xk|86f
return getHibernateTemplate iN0pYqY*
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().findByNamedQuery(query, parameter); WfBA5
} apa~Is1
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publicList findByNamedQuery(finalString query, /S$p_7N
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finalObject[] parameters){ bWt>tEnf
return getHibernateTemplate vI{JBWE,S
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().findByNamedQuery(query, parameters); .UakO,"z
} rhMsZ={M
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publicList find(finalString query){ kCL)F\v"iT
return getHibernateTemplate().find T_\HU*\
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(query); w}G2m)(
} 6%JKY+n^
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publicList find(finalString query, finalObject M]!R}<]{
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parameter){ {0q;:7Bt
return getHibernateTemplate().find 8;4vr@EV
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(query, parameter); Op,Ce4A
} vpFN{UfD
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public PaginationSupport findPageByCriteria hc5M)0d
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(final DetachedCriteria detachedCriteria){ \OHsCG27
return findPageByCriteria }.3F|H
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