Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 v5 @9
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 y=aWSb2y'
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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 FHSFH>
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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 ~"\WV4}`v
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分页支持类: oj[~H}>
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java代码: N^M6*,F,J
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package com.javaeye.common.util; ?t<g|H/|6
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import java.util.List; }H<Z`3_U%
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publicclass PaginationSupport { N4z[=b>
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publicfinalstaticint PAGESIZE = 30; l^^Z}3^Rk
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privateint pageSize = PAGESIZE; }Q*J!OH
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privateList items; P3IBi_YyG1
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privateint totalCount; V c;g$Xr[
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privateint[] indexes = newint[0]; VC0Tqk
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privateint startIndex = 0; 8f1M6GK?
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public PaginationSupport(List items, int kBLFK3i
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totalCount){ omGzyuPF
setPageSize(PAGESIZE); Qv`: E
setTotalCount(totalCount); S?6-I,]h
setItems(items); 2
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setStartIndex(0); Hj(K*z
} c|(J%@B)
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public PaginationSupport(List items, int Lq$ig8V:O7
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totalCount, int startIndex){ %t$KVV
setPageSize(PAGESIZE); 71>,tq
setTotalCount(totalCount); 7_P33l8y
setItems(items); ]l C2YD}
setStartIndex(startIndex); V']Z_$_
} xY/F)JOeG
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public PaginationSupport(List items, int *];QPi~
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totalCount, int pageSize, int startIndex){ ^pH8'^n
setPageSize(pageSize); YK[2KTlo
setTotalCount(totalCount); sVBr6
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setItems(items); Mtv{37k~
setStartIndex(startIndex); kI9I{ &J&
} }!{R;,5/n
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publicList getItems(){ n$XEazUb0N
return items; V9SL96'[I
} S-}c_zbl;
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publicvoid setItems(List items){ ?hGE[.(eh]
this.items = items; =PQ4S2Q
} 3[y$$qXI
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publicint getPageSize(){ J}[[tl
return pageSize; $./aKJ1B
} 9r+'DX?>
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publicvoid setPageSize(int pageSize){ (sQXfeMz
this.pageSize = pageSize; :*&c'
} `"[qb ?z
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publicint getTotalCount(){ n?$c"}
return totalCount; =Gu&0f
} u8.Tu7~
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publicvoid setTotalCount(int totalCount){ dt@c,McN|Q
if(totalCount > 0){ zCQP9oK!
this.totalCount = totalCount; T*SLM"x
int count = totalCount / _k26(rdI@-
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pageSize; =R'O5J
if(totalCount % pageSize > 0) r180vbN$
count++; hSw=Oq82
indexes = newint[count]; Ha|}Oj
for(int i = 0; i < count; i++){ AEaN7[PQx|
indexes = pageSize * |nWEuKHy
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} EpNN!s=Q
}else{ \/<VJB
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this.totalCount = 0; 7I'C'.6iM
} .#bf9JOE
} w&p(/y
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publicint[] getIndexes(){ `_ 1~[t
return indexes; CEI"p2
} * 30K}&T
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publicvoid setIndexes(int[] indexes){ RqGX(Iuv
this.indexes = indexes; aVHIU3
} ?RS:I%bL
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publicint getStartIndex(){ Kcp YHWCa.
return startIndex; +|d]\WlJ
} [.fh2XrVM
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publicvoid setStartIndex(int startIndex){ @L~erg>8=
if(totalCount <= 0) bY.VNA
this.startIndex = 0; #@OPi6.#!<
elseif(startIndex >= totalCount) GW'v\O
this.startIndex = indexes +pme]V|<
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[indexes.length - 1];
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elseif(startIndex < 0) / @"{u0
this.startIndex = 0; pXl[I;
else{ &l7E|.JE
this.startIndex = indexes 0y,w\'j
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[startIndex / pageSize]; 3k9n*jY0
} L55UeP\
} rkR5>S( 2M
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publicint getNextIndex(){ i(;`x
int nextIndex = getStartIndex() + Lu.+J]Rz
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pageSize; t!3N|`x
if(nextIndex >= totalCount) u-,}ug|
return getStartIndex(); lTqlQ<`V
else D)ri_w!Q
return nextIndex; U< Xdhgo?
} [Cv./hEQi
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publicint getPreviousIndex(){ <C&|8@A0
int previousIndex = getStartIndex() - N4C7I1ihq
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pageSize; |EX=Rj*
if(previousIndex < 0) bg-/
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return0; .7^(~&5N
else ]<f(@]R/d
return previousIndex; /m"/#; ^l
} <A)M^,#o
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} 8]&:'
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抽象业务类 UTyV6~
java代码: hk4t #Km
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/** zVw5 (Tc
* Created on 2005-7-12 \OVtvJV]
*/ `R8&(kQ
package com.javaeye.common.business; d6QrB"J`
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import java.io.Serializable; 0dC5
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import java.util.List; ZAgXz{!H(
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import org.hibernate.Criteria; '1ySBl1>
import org.hibernate.HibernateException; :LNE?@
import org.hibernate.Session; l(sVnhL6h
import org.hibernate.criterion.DetachedCriteria; !="q"X/*
import org.hibernate.criterion.Projections; v5S9h[gT
import (~^fx\-S
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org.springframework.orm.hibernate3.HibernateCallback; 6I@j$edZ
import k(dakFaC^
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org.springframework.orm.hibernate3.support.HibernateDaoS v{a%TA9-
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upport; WZNq!K H
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import com.javaeye.common.util.PaginationSupport; 8-nf4=ll
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public abstract class AbstractManager extends oM~y8O
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HibernateDaoSupport { w7U]-MW6A*
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privateboolean cacheQueries = false; ja_8n["z
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privateString queryCacheRegion; >5~#BrpwG
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publicvoid setCacheQueries(boolean YK3>M"58
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cacheQueries){ DQXUh#t\(]
this.cacheQueries = cacheQueries; ?8V.iHJk
} #_ |B6!D!
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publicvoid setQueryCacheRegion(String [v"Z2F<.=
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queryCacheRegion){ ~U]g;u
this.queryCacheRegion = ;AEfU^[
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queryCacheRegion; c}o 6Rm50
} "17)`Yf
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publicvoid save(finalObject entity){ OT])t<TF6
getHibernateTemplate().save(entity); |q77
} +H2Jhgi
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publicvoid persist(finalObject entity){ s7 "xDDV
getHibernateTemplate().save(entity); x"12$ 79=
} :]-oo*xP
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publicvoid update(finalObject entity){ >S +}
getHibernateTemplate().update(entity); ^ F]hW
} yV{B,T`W
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publicvoid delete(finalObject entity){ k5S;G"iJ
getHibernateTemplate().delete(entity); 2!/Kt
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} wGArR7r
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publicObject load(finalClass entity, tUv>1)
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finalSerializable id){ i?6&4
return getHibernateTemplate().load G68KoM
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(entity, id); m+Ye`]
}
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publicObject get(finalClass entity, AFz:%m
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finalSerializable id){ _
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return getHibernateTemplate().get ANhtz1Fl
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(entity, id); Yr9'2.%Q
} y*i&p4Y*
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publicList findAll(finalClass entity){ 7=l~fKu
return getHibernateTemplate().find("from \]tBwa
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" + entity.getName()); OpUfK4U)
} bWswF<y-
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publicList findByNamedQuery(finalString Tru{8]uMH
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namedQuery){ \zO.#H
return getHibernateTemplate r<`:Q]
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().findByNamedQuery(namedQuery); vhrf 89-q
} AWR :~{
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publicList findByNamedQuery(finalString query, )0"Q
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finalObject parameter){ B5lwQp]
return getHibernateTemplate <XdnVe1
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().findByNamedQuery(query, parameter); j_8 Y Fz5
} !vSI"$xd
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publicList findByNamedQuery(finalString query,
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finalObject[] parameters){ :5t4KcQ
return getHibernateTemplate -/Q5?0z
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().findByNamedQuery(query, parameters); F5o8@ Ib]:
} NdXHpq;
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publicList find(finalString query){ #dauXUKH
return getHibernateTemplate().find kuEXNi1l
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(query); E2e"A
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} 4>gfLK\R:
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publicList find(finalString query, finalObject ]>n{~4a
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parameter){ Oyl~j#h
return getHibernateTemplate().find B"^j>SF
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(query, parameter); [EAOk=X
} _jQ:9,;
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public PaginationSupport findPageByCriteria o=m5AUe?J
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(final DetachedCriteria detachedCriteria){ W5R/Ub@g
return findPageByCriteria m}]{Y'i]R
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); "- 4|HA
} _H+]G"k/r
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public PaginationSupport findPageByCriteria 5aQ)qUgAW
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(final DetachedCriteria detachedCriteria, finalint PQHztS"
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startIndex){ ,1-%C)
return findPageByCriteria Y+-yIMt$r
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(detachedCriteria, PaginationSupport.PAGESIZE, S^QEc tXU
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startIndex); JX59n%$@
} K9<8FSn
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public PaginationSupport findPageByCriteria (XZ[-M7
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(final DetachedCriteria detachedCriteria, finalint *p{p.%Qs:
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pageSize, M
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finalint startIndex){ \8{SQ%
return(PaginationSupport) lu#a.41
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getHibernateTemplate().execute(new HibernateCallback(){ ?^&ih:"
publicObject doInHibernate A c_P^
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(Session session)throws HibernateException { HhbBt'fH
Criteria criteria = |_53So:g
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detachedCriteria.getExecutableCriteria(session); :5kDc"
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int totalCount = 5wK==hZ
vl (``5{
((Integer) criteria.setProjection(Projections.rowCount 1g;2e##)
}8O9WS
()).uniqueResult()).intValue(); }&v}S6T
criteria.setProjection L$ T2 bul
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(null); rZUTBLZ`j
List items = & 9e
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criteria.setFirstResult(startIndex).setMaxResults x?i
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(pageSize).list(); m(f`=+lqI`
PaginationSupport ps = frcAXh9
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new PaginationSupport(items, totalCount, pageSize, ]OpGD5jZ
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startIndex); wSR|uh
return ps; 49FP&NgK
} XDK Me}
}, true); {4+/0\
} :!i=g+e]
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public List findAllByCriteria(final g~<[;6&