Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 k:U%#rb;
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 .4z_ohe
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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 5p.#nc!;y
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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 :2t?0YR
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分页支持类: #FGj)pu
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java代码: E_xCRfw_i]
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package com.javaeye.common.util; ~Ctq
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import java.util.List; `g'9)Xf4KT
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publicclass PaginationSupport { O3L:v{Kn
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publicfinalstaticint PAGESIZE = 30; Ap(>mUs!i
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privateint pageSize = PAGESIZE; 3r2e_?m
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privateList items; ;`Wh^Qgi
}@A{'q5y
privateint totalCount; V*+Z=Y'
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privateint[] indexes = newint[0]; @ojV8
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privateint startIndex = 0; kSqMI'89
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public PaginationSupport(List items, int y=e|W=<D&
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totalCount){ hLSas#B>
setPageSize(PAGESIZE); pTcN8E&Unz
setTotalCount(totalCount); D7,{p2<2T
setItems(items); &Y8S! W@4
setStartIndex(0); d+6-ten
} G4K3qD#+H
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public PaginationSupport(List items, int V53iWWaFe
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totalCount, int startIndex){ !-|{B3"6
setPageSize(PAGESIZE); `yua?n
setTotalCount(totalCount); RATW[(ZA
setItems(items); 8(GJz ~y
setStartIndex(startIndex); -W"w
} 5PT*b}g@
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public PaginationSupport(List items, int 5m a(~5
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totalCount, int pageSize, int startIndex){ K2oyHw<mk
setPageSize(pageSize); /-C6I:
setTotalCount(totalCount); iriF'(1
setItems(items); /c52w"WW
setStartIndex(startIndex); {b]V
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} V%'+ ob6
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publicList getItems(){ r=^?
return items; J*r%b+
} \XgpwvO".
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publicvoid setItems(List items){ :)Z.!
this.items = items; |7E1yu
} aiwKkf`\
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publicint getPageSize(){ ]w9\q*S]
return pageSize; 8al%F_r]
} HF]|>1WV[
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publicvoid setPageSize(int pageSize){ QMWDII&t
this.pageSize = pageSize; 4A~1Z,"%v(
} DH{^9HK
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publicint getTotalCount(){ g/e2t=qP
return totalCount; ]='zY3
} tFYod#
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publicvoid setTotalCount(int totalCount){ @vkO(o
if(totalCount > 0){ `@Tl7I\
this.totalCount = totalCount; ,7w[r<7
int count = totalCount / m?pm)w
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pageSize; Zdll}nO"E
if(totalCount % pageSize > 0) -_"6jU
count++; <gbm
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indexes = newint[count]; $Z{Xt*
for(int i = 0; i < count; i++){ 2<8JY4]!]
indexes = pageSize * ' lMPI@C6r
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} 6-h(305A
}else{ +{pS2I}d
this.totalCount = 0; A1V^Gi@i
} {S5HH"
}
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publicint[] getIndexes(){ "jMSF@lr
return indexes; k_hs g6Ur.
} Q"=$.M~
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publicvoid setIndexes(int[] indexes){ [BzwQ 4
this.indexes = indexes; YVS~|4hu?i
} ;7w4BJcq']
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publicint getStartIndex(){ ] B3\IT
return startIndex; E\dJb}"x %
} /#xx,?~xx0
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publicvoid setStartIndex(int startIndex){ s\A4y "
if(totalCount <= 0) |?/,ED+|>D
this.startIndex = 0; IIIP<nyc
elseif(startIndex >= totalCount) =E10j.r
this.startIndex = indexes :B"Y3~I
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[indexes.length - 1]; On4tK\l@
elseif(startIndex < 0) TIre,s)_
this.startIndex = 0; 2u?k;"]V
else{ f15f)P
this.startIndex = indexes EsKOzl[c:
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[startIndex / pageSize]; Q%
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} UUaC@Rs2
} ud,=O Xq
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publicint getNextIndex(){ yV/A%y-P
int nextIndex = getStartIndex() + # 8fq6z|JZ
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pageSize; ?A`8c R=)I
if(nextIndex >= totalCount) c#YW>(
return getStartIndex(); qxW^\u!<
else "0]s|ys6<
return nextIndex; \:@yfI@
} 8Jb N&C
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publicint getPreviousIndex(){ b!3Y<D*
int previousIndex = getStartIndex() - P!K;`4Ika
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pageSize; .1#G*A|
if(previousIndex < 0) Z %\*\6L)
return0; 5}MjS$2og
else 4J${gcju
return previousIndex; 5
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} L>.*^]
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} 7t~12m8x
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抽象业务类 %kSpMj|
java代码: HyKv5S$
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/** O{w'i|
* Created on 2005-7-12 gyf9D]W
*/ D +Ui1h-
package com.javaeye.common.business; PG*:3![2
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import java.io.Serializable; Q8>
import java.util.List; ('Doy1L
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import org.hibernate.Criteria; 8^>qzaf
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import org.hibernate.HibernateException; `D~wY^q{
import org.hibernate.Session; "yA=Tw
import org.hibernate.criterion.DetachedCriteria; I@jXW>$
import org.hibernate.criterion.Projections; oW\kJ>!
import xR`M#d5"
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org.springframework.orm.hibernate3.HibernateCallback; |h(05Kbk
import tVFydN~
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org.springframework.orm.hibernate3.support.HibernateDaoS V4>qR{5
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upport; Lk>o`<*
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import com.javaeye.common.util.PaginationSupport; |';oIYs|$
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public abstract class AbstractManager extends S?K x:]
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HibernateDaoSupport { |p\vH#6y+
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privateboolean cacheQueries = false; pf[m"t6G~
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privateString queryCacheRegion; u-%|ZSg
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publicvoid setCacheQueries(boolean _Z{EO|L
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cacheQueries){ ~H~iKl}|7
this.cacheQueries = cacheQueries; Iq["(!7E5
} SL ) ope
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publicvoid setQueryCacheRegion(String eb#p-=^KP
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queryCacheRegion){ yh:Wg$qx
this.queryCacheRegion = SQ0?M\D7
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queryCacheRegion; }Md5a%s<
} A8oTcX_
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publicvoid save(finalObject entity){ :HW\awv
getHibernateTemplate().save(entity); {;-wXzv`
} >^N{
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publicvoid persist(finalObject entity){ $z48~nu@j
getHibernateTemplate().save(entity); TkyP_*
} %=[xc?
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publicvoid update(finalObject entity){ <TQ,7M4X
getHibernateTemplate().update(entity); b<E+5;u
} J@l QzRqRb
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publicvoid delete(finalObject entity){ (N[R`LN
getHibernateTemplate().delete(entity); /{71JqFis
} 2PTAIm Rq
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publicObject load(finalClass entity, tQ7:4._
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finalSerializable id){ VV$4NV&`Q
return getHibernateTemplate().load \qZ>WCp>r
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(entity, id); pr?k~Bn
} ;]\>jC
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publicObject get(finalClass entity, rm?C_
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finalSerializable id){ 8_:j.(n
return getHibernateTemplate().get =V>inH
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(entity, id); Hzc5BC
} {v>8Kp7_R
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publicList findAll(finalClass entity){ P1qQ)-J
return getHibernateTemplate().find("from aGbHDo
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" + entity.getName()); 5`\"UC7?%
} /hp
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publicList findByNamedQuery(finalString M'|?*aNK
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namedQuery){ T-a[
return getHibernateTemplate XmAun
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().findByNamedQuery(namedQuery); ?A]/
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} X+[h]A
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publicList findByNamedQuery(finalString query, JA2oy09G
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finalObject parameter){ \&\U&^?
return getHibernateTemplate D5"Xjo*
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().findByNamedQuery(query, parameter); @p%WFNR0
} Hj97&C{Q^
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publicList findByNamedQuery(finalString query, V~MyX&`
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finalObject[] parameters){ >qS2ha
return getHibernateTemplate Plj >+XRO
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().findByNamedQuery(query, parameters); a3J'
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} `MC5_SG 1
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publicList find(finalString query){ D%~"]WnZ\Q
return getHibernateTemplate().find 9Yhlq$;g
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(query); * -X`^R
} ;pt.)5
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publicList find(finalString query, finalObject C8KV<k
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parameter){ '37 <+N
return getHibernateTemplate().find pmc)$3u
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(query, parameter); K1CgM1 v
} w0P Atu
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public PaginationSupport findPageByCriteria PwnfXsR
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(final DetachedCriteria detachedCriteria){ 1Vx>\A
return findPageByCriteria !CUM*<iV
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); y<kg;-& 8
} s1bb2R
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public PaginationSupport findPageByCriteria i
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(final DetachedCriteria detachedCriteria, finalint 2$b JMx>
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startIndex){ @k9n 0Qe|F
return findPageByCriteria 1v inO!
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(detachedCriteria, PaginationSupport.PAGESIZE, U;#G$
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startIndex); %?Q<
} HdRwDW@7=
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public PaginationSupport findPageByCriteria 6 apK
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(final DetachedCriteria detachedCriteria, finalint S;j"@'gz9
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pageSize, Nz>xilU'
finalint startIndex){ yp]z@SYA@
return(PaginationSupport) J"K(nKXO_?
g>QN9v})
getHibernateTemplate().execute(new HibernateCallback(){ w[g`)8Ib
publicObject doInHibernate r0s(MyI
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(Session session)throws HibernateException { {wD:!\5
Criteria criteria = e"|ZTg+U
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detachedCriteria.getExecutableCriteria(session); :cKdl[E4z
int totalCount = {g 4`>^;
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((Integer) criteria.setProjection(Projections.rowCount q;.LK8M
y
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()).uniqueResult()).intValue(); JC#5CCz
criteria.setProjection =w7+Yt
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(null);
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List items = N!./u(b
:}CcWfbT
criteria.setFirstResult(startIndex).setMaxResults T%aM~dp
z.;!Pj
(pageSize).list(); r<B
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PaginationSupport ps = 8WpZ"
@w(X}q1
new PaginationSupport(items, totalCount, pageSize, Z+ _xX
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startIndex); 0nZQ"{x
return ps; [U:P&)
} Y8c,+D,Ww
}, true); [8&+4<
} Y*sw;2Z;a
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public List findAllByCriteria(final 6Zx5^f(qd
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DetachedCriteria detachedCriteria){ K/_"ybR7
return(List) getHibernateTemplate a7aj:.wi
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().execute(new HibernateCallback(){ yp)D"w4@
publicObject doInHibernate pJIJ"o'>.9
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(Session session)throws HibernateException { H.[nr:
Criteria criteria = %<`sDO6Q?
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detachedCriteria.getExecutableCriteria(session); GK[Hs1/
return criteria.list(); JvkTfTE7
} #'n.az=1
}, true); M\RHFTB<C
} hFnUw26P
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public int getCountByCriteria(final WLiF D.
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DetachedCriteria detachedCriteria){ IY|`$sHb
Integer count = (Integer) `VF_rC[?
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getHibernateTemplate().execute(new HibernateCallback(){ ;*hVAxs1
publicObject doInHibernate _{n4jdw%(
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(Session session)throws HibernateException { O;|jLf_If
Criteria criteria = &Zjs
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detachedCriteria.getExecutableCriteria(session); 7~);,#[ky
return Eqi;m,)
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criteria.setProjection(Projections.rowCount sFHqLG{/
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()).uniqueResult(); ([#'G+MC&