Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 dAu^{1+2
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 IeRl6r%:
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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 4@/ q_*3o
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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 sDzD
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分页支持类: ir?Uw:/f
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java代码: O4 +SD
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package com.javaeye.common.util; C$N4
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import java.util.List; V\iIvBpWg
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publicclass PaginationSupport { Y(#d8o}}#
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publicfinalstaticint PAGESIZE = 30; ~|aeKtCs(.
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privateint pageSize = PAGESIZE; "}]GQt< F
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privateList items; d&[M8(
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privateint totalCount; ;55tf
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privateint[] indexes = newint[0]; S7Iu?R_I
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privateint startIndex = 0; tj"v0u?zW
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public PaginationSupport(List items, int Ux%\Y.PPI
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totalCount){ 1cHSgpoJ
setPageSize(PAGESIZE); %S(#cf!HP
setTotalCount(totalCount); 6k@% +<1
setItems(items); T!=20 !I
setStartIndex(0); I:uQB!
} ;y?D1o^r8W
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public PaginationSupport(List items, int .236d^l
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totalCount, int startIndex){ ijZydn
setPageSize(PAGESIZE); + e5
setTotalCount(totalCount); ]AFM Y<mB
setItems(items); u>3&.t@hU1
setStartIndex(startIndex); %U=S6<lbj;
} ~n8*@9[
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public PaginationSupport(List items, int Up/eV}C
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totalCount, int pageSize, int startIndex){ # o;CmB
setPageSize(pageSize); q[y,J
setTotalCount(totalCount); s0`|G|.}
setItems(items); !SO$k%b}!
setStartIndex(startIndex); j &0fC!k
} =E"kv!e
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publicList getItems(){ Ul$X%
return items; =}%#$
} .^)C:XiW
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publicvoid setItems(List items){ | `)V^e_
this.items = items; :YRzI(4J
} VtzyB
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publicint getPageSize(){ #T$'.M
return pageSize; 7fN&Q~.
} z`xz~9a<
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publicvoid setPageSize(int pageSize){ <mo^Y k3
this.pageSize = pageSize; )/+eLRN5G
} u':0"5}
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publicint getTotalCount(){ ~*cY& 9
return totalCount; y
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} R.2KYhp,
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publicvoid setTotalCount(int totalCount){ cO=UswIkwO
if(totalCount > 0){ tXG4A$(2&
this.totalCount = totalCount; H s4zJk
int count = totalCount / wzQdKlV
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pageSize; -MHX1`P:Sn
if(totalCount % pageSize > 0) qK6
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count++; X_tW#`
indexes = newint[count]; 'De'(I
for(int i = 0; i < count; i++){ &6|^~(P?
indexes = pageSize * QkCoW[sn
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} Z_OqXo=
}else{ ;5oH6{7_Z
this.totalCount = 0; : DX/r
} W-]yKSob
} [@. jL0>
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publicint[] getIndexes(){ ukDH@/
return indexes; _"w!KNX>(~
} 9
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publicvoid setIndexes(int[] indexes){ c;~Llj
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this.indexes = indexes; RY/ Z~]
} RH'F<!p
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publicint getStartIndex(){ #u=O 5%.
return startIndex; z5*O@_r+.b
} ubC JZ"!
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publicvoid setStartIndex(int startIndex){ U5ud?z()OA
if(totalCount <= 0) @n;YF5
this.startIndex = 0; ;k41+O:f@
elseif(startIndex >= totalCount) f?<M3P
this.startIndex = indexes bd 1J#V]
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[indexes.length - 1]; 7E6?)bgh
elseif(startIndex < 0) x]J-q5
this.startIndex = 0; 8H`l"
else{ zQ|x>3
this.startIndex = indexes cV!/
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[startIndex / pageSize]; T#^6u)
} K~ /V
} u/:Sf*;?
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publicint getNextIndex(){ dv9Pb5i
int nextIndex = getStartIndex() + .idl@%
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pageSize; y $DB
if(nextIndex >= totalCount) zt?w n*_
return getStartIndex(); oD}FJvV
else 1H[;7@o$e
return nextIndex; "yq;{AGOGl
} +#db_k
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publicint getPreviousIndex(){ awW\$Q
int previousIndex = getStartIndex() - ?'#;Y"RT
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pageSize; Ay6rUN1ef
if(previousIndex < 0) 1:s~ ]F@
return0; 9a Ps_|C
else `IRT w"
return previousIndex; ziGL4c0p
} w>UV\`x
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} Oc+L^}elJ
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抽象业务类 5.HztNL
java代码: h?tV>x/Fu
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/** `l0icfy
* Created on 2005-7-12 n?fC_dy
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package com.javaeye.common.business; L`@&0Zk
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import java.io.Serializable; 54_m{&hb
import java.util.List; 9JeGjkG,
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import org.hibernate.Criteria; F qyJ*W\1
import org.hibernate.HibernateException; dsoRPX']=
import org.hibernate.Session; 'N/%SRk
import org.hibernate.criterion.DetachedCriteria; JkEQ@x
import org.hibernate.criterion.Projections; -;.fU44O[#
import dM.Ow!j
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org.springframework.orm.hibernate3.HibernateCallback; m,fr?d/;
import Qn cS&
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org.springframework.orm.hibernate3.support.HibernateDaoS S?WUSx*N
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upport; ,\RC gc
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import com.javaeye.common.util.PaginationSupport; =
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public abstract class AbstractManager extends Y mSaIf
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HibernateDaoSupport { Ps,w(k{d
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privateboolean cacheQueries = false; *g.,[a0
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privateString queryCacheRegion; yE/I)GOQjs
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publicvoid setCacheQueries(boolean Nq1RAM
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cacheQueries){ ]qQB+]WN
this.cacheQueries = cacheQueries; Fd0FG A&L
} ,FPgs0rrS
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publicvoid setQueryCacheRegion(String ~$Yuxo
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queryCacheRegion){ 05DtU!3O
this.queryCacheRegion = 7P(:!ce4-
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queryCacheRegion; R|yTUGY
} HM
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publicvoid save(finalObject entity){ t*$@QO
getHibernateTemplate().save(entity); p[IgnO
} 8 F 1ga15
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publicvoid persist(finalObject entity){ (9h{6rc=I
getHibernateTemplate().save(entity); P|4a}SWU
} 3*L,48wX
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publicvoid update(finalObject entity){ z#ET-[I
getHibernateTemplate().update(entity); /;J;,G`?
} V!4E(sX
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publicvoid delete(finalObject entity){ tt OsL')|
getHibernateTemplate().delete(entity); DenCD9 f
} *9 xD]ZZF
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publicObject load(finalClass entity, R 1\]Y
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finalSerializable id){ !h;VdCCi#
return getHibernateTemplate().load =!2
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(entity, id); 5
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} Ei!z? sxzx
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publicObject get(finalClass entity, "^7Uk#!
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finalSerializable id){ nfR5W~%*:
return getHibernateTemplate().get PI?[
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(entity, id); LPClE5
} ('Pd
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publicList findAll(finalClass entity){ 36z{TWF
return getHibernateTemplate().find("from Sx7xb]3XI"
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" + entity.getName()); 'L7.a'
} @A%`\Ea%
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publicList findByNamedQuery(finalString ny0`~bl{p
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namedQuery){ q
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return getHibernateTemplate f&J*(F*u
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().findByNamedQuery(namedQuery); %r!-*p<i|
} RdjUw#\33b
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publicList findByNamedQuery(finalString query, jA'+>`@
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finalObject parameter){ *HUqW}_r
return getHibernateTemplate B:SRHd{*Wu
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().findByNamedQuery(query, parameter); 1>LquZ+Kj
} scmbDaOn
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publicList findByNamedQuery(finalString query, x4(WvQ%O#
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finalObject[] parameters){ \ U_DTI
return getHibernateTemplate _{8boDX#
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().findByNamedQuery(query, parameters); \hVFK6
} 9hQ{r 2
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publicList find(finalString query){ m"5gzH
return getHibernateTemplate().find +VDB\n
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(query); TOs|f8ay
} `CB TZG09
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publicList find(finalString query, finalObject >2r/d
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parameter){ 60m1
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return getHibernateTemplate().find n/-I7Q!;u
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(query, parameter); p}\!"&,^m
} !!AutkEg>
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