Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Rs +),
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 fHLt{ !O
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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 UA8*8%v
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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 DD?zbN0X
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分页支持类: ,u<oAI`
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java代码: YaT6vSz
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package com.javaeye.common.util; hHsN(v
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import java.util.List; XzD+#+By
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publicclass PaginationSupport { *q$O6B-
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publicfinalstaticint PAGESIZE = 30; _-R&A@
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privateint pageSize = PAGESIZE; Tp[-,3L
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privateList items; _pN:p7l(
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privateint totalCount; }HKt{k&$
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privateint[] indexes = newint[0]; JP1XH k
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privateint startIndex = 0; O}3|UI!`
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public PaginationSupport(List items, int _wp_y-"
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totalCount){ gtwUY$
setPageSize(PAGESIZE); uz
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setTotalCount(totalCount); #7r13$>!
setItems(items); r?$V;Z
setStartIndex(0); G&z^AV
} bP)(4+t~
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public PaginationSupport(List items, int O\+b1+&b3Y
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totalCount, int startIndex){ mFgrT
setPageSize(PAGESIZE); w\zNn4B})A
setTotalCount(totalCount); I
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setItems(items); UGD B4S
setStartIndex(startIndex); Aryp!oW
} s`2q(`}
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public PaginationSupport(List items, int ;u*I#)7
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totalCount, int pageSize, int startIndex){ 3]li3B'
setPageSize(pageSize); W QqOXF
setTotalCount(totalCount); jY k5]2#A
setItems(items); Eyq4w
setStartIndex(startIndex); ^ u:bgwP
} 9U4 D$M
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publicList getItems(){ `>Ms7G9S~e
return items; Sfa;;7W@R
} u10;qYfL8o
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publicvoid setItems(List items){ &d_2WQ}
this.items = items; U8a5rF><
} Ke^9R-jP
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publicint getPageSize(){ D!V~g72j
return pageSize; m Eg3.|
} ENy$sS6[D
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publicvoid setPageSize(int pageSize){ 0[f[6mm%m
this.pageSize = pageSize; INEE
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} NXMZTZpB7
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publicint getTotalCount(){ .sSbU^U
return totalCount; +xS<^;
} +45.fo
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publicvoid setTotalCount(int totalCount){ a$3 ]`
if(totalCount > 0){ PXFu
this.totalCount = totalCount; y9U~4
int count = totalCount / cs 58: G5
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pageSize; 30YH}b#B
if(totalCount % pageSize > 0) E
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count++; Gi\Z"MiBZ
indexes = newint[count]; n?QglN
for(int i = 0; i < count; i++){ 8p#V4liE
indexes = pageSize * K{9
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} Myf2"\}
}else{ p]qz+Z/
this.totalCount = 0; WidLUv
} Ya}}a
}
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publicint[] getIndexes(){ }L
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return indexes; I#'yy7J
} s@p:XO
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publicvoid setIndexes(int[] indexes){ to?={@$]
this.indexes = indexes; @O|`r(le
} e?N3&ezp
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publicint getStartIndex(){ L)
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return startIndex; </b_Rar
} 8Y_lQfJa
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publicvoid setStartIndex(int startIndex){ 7=s7dYlu
if(totalCount <= 0) zYM0?O8pJ~
this.startIndex = 0; o wwWm1@
elseif(startIndex >= totalCount) FD5OO;$
this.startIndex = indexes nd[Ja_h
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[indexes.length - 1]; q.j$]?PQ
elseif(startIndex < 0) O)"Z% B
this.startIndex = 0; X`fm5y
else{ mC3:P5/c
this.startIndex = indexes Zy|u5J
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[startIndex / pageSize]; wYDdy gS
} t#%J=zF{
} 'Er\68
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publicint getNextIndex(){ 79I"F'
int nextIndex = getStartIndex() + Kw2]J)TO
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pageSize; iBmvy7S?
if(nextIndex >= totalCount) 5H, (\Xd
return getStartIndex(); E(&zH;?_
else kh8 M=
return nextIndex; )\7Cp -E-W
} m-#]v}0A
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publicint getPreviousIndex(){ hLVgP&/E
int previousIndex = getStartIndex() - 1^ iLs
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pageSize; ,@I\'os
if(previousIndex < 0) N`qGwNT%G
return0; foB&H;A4oC
else N34bB>_
return previousIndex; Pn L?zae
} qQ1D }c@
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} ,b?G]WQrHs
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抽象业务类 \Ym!5,^o
java代码: .y0u"@iF
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/** o{ccO29H/
* Created on 2005-7-12 C4t~k
*/ b,'rz04^
package com.javaeye.common.business; Q5u3~Q'e
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import java.io.Serializable; jpOcug`f
import java.util.List; uKB V`I
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import org.hibernate.Criteria; lE*.9T
import org.hibernate.HibernateException; ]BTISaL-R
import org.hibernate.Session; ey\(*Tu9
import org.hibernate.criterion.DetachedCriteria; ?%/*F<UVQ
import org.hibernate.criterion.Projections; T+FlN-iy)
import @V+KL>Qw
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org.springframework.orm.hibernate3.HibernateCallback; ]eX(K5 A
import o =F!&]+
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org.springframework.orm.hibernate3.support.HibernateDaoS q^~w:$^U
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upport; -qLNs_
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import com.javaeye.common.util.PaginationSupport; =,08D^ xY
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public abstract class AbstractManager extends ZB5NTNf>
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HibernateDaoSupport { v{8r46Y~Z)
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privateboolean cacheQueries = false; (: mF+%(
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privateString queryCacheRegion; [.;8GMW
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publicvoid setCacheQueries(boolean -NDB.~E^DJ
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cacheQueries){ aDE}'d1qo
this.cacheQueries = cacheQueries; D@k#'KU
} W=,]#Z+M;
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publicvoid setQueryCacheRegion(String V~t;
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queryCacheRegion){ K=dG-+B~}
this.queryCacheRegion = lW]&a"1$
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queryCacheRegion; nNRc@9Lt
} VZ2CWE)t
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publicvoid save(finalObject entity){ 8=mx5Gwz-
getHibernateTemplate().save(entity); xJFxrG'c
} [Fr <tKtB
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publicvoid persist(finalObject entity){ =DI/|^j{;
getHibernateTemplate().save(entity); 5J3K3
} FXid=&T@0D
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publicvoid update(finalObject entity){ lK#uyag
getHibernateTemplate().update(entity); z~;@Mo"*f
} )N&95\u
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publicvoid delete(finalObject entity){ 85+w\KuEY
getHibernateTemplate().delete(entity); M|7{ZE`Y
} ]yas]5H
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publicObject load(finalClass entity, *,wW-8
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finalSerializable id){ '^.3}N{Fo
return getHibernateTemplate().load zBqNE`
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(entity, id); 2c5)pIVEy
} W1O Y}2kj
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publicObject get(finalClass entity, ES[]A&tf
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finalSerializable id){ cUU"*bA#
return getHibernateTemplate().get ;oRgg'k<
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(entity, id); Oi~.z@@
} /ASpAl[J
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publicList findAll(finalClass entity){ 05;J7T<
return getHibernateTemplate().find("from kT&GsR/
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" + entity.getName()); |TuFx=~5v
} R"e53 3
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publicList findByNamedQuery(finalString !GZ{UmwA
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namedQuery){ t` zPx#])
return getHibernateTemplate `AhTER
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().findByNamedQuery(namedQuery); c nV2}U/\
} _MUSXB'
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publicList findByNamedQuery(finalString query, 5f#]dgBe
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finalObject parameter){ 9 H~OC8R:
return getHibernateTemplate [u/W h+
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().findByNamedQuery(query, parameter); /QVhT
} Tw9?U,]
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publicList findByNamedQuery(finalString query, +L#Q3}=s
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finalObject[] parameters){ Uj>bWa`
return getHibernateTemplate a &