Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Kulh:d:w
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 -)dS`hM
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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 B(l8&
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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 C?h`i ^ >2
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分页支持类: xZpGSlA
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java代码: 9p '#a:
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package com.javaeye.common.util; vi-mn)L6#
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import java.util.List; =3=
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publicclass PaginationSupport { ),#hBB`ZA
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publicfinalstaticint PAGESIZE = 30; tMQz'3,X
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privateint pageSize = PAGESIZE; $Afw]F$
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privateList items; e|&}{JP{[
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privateint totalCount; SGUu\yS&s
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privateint[] indexes = newint[0]; 5J 0Sc
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privateint startIndex = 0; (}:n#|,{M
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public PaginationSupport(List items, int 3Hg}G#]WS
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totalCount){ Bx&F* a;5
setPageSize(PAGESIZE); fj,]dQT
setTotalCount(totalCount); ^,;AM(E
setItems(items); M(+;AS?;
setStartIndex(0); g\O&gNq<)-
} ;s(uaC3
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public PaginationSupport(List items, int $hM>%u
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totalCount, int startIndex){ u>U4w68
setPageSize(PAGESIZE); \XI9 +::%
setTotalCount(totalCount); 057$b!A-a
setItems(items); h~zG*B5F
setStartIndex(startIndex); |m5 E%E
} qV`JZ\n
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public PaginationSupport(List items, int ?*ni5\y5o
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totalCount, int pageSize, int startIndex){ P
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setPageSize(pageSize); ^3:y<{J
setTotalCount(totalCount); 5f'<0D;K
setItems(items); C"=^(HU
setStartIndex(startIndex); HvSYE[Zt|
} *[MK{m
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publicList getItems(){ Gd08RW
return items; m=7Z8@sX},
} vKCgtk
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publicvoid setItems(List items){ Y3J;Kk#AH
this.items = items; z%pD3J?>
} 9^5D28y
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publicint getPageSize(){ `AO<r
return pageSize; /j0zb&
} _\y%u_W
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publicvoid setPageSize(int pageSize){ BL&D|e
this.pageSize = pageSize; !^/Mn
} ZX
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publicint getTotalCount(){ cx(W{O"Jb
return totalCount; nfV32D|3
} '\iWp?`$
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publicvoid setTotalCount(int totalCount){ qXQ/M]
if(totalCount > 0){ I
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this.totalCount = totalCount; +[sZE
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int count = totalCount / k'd(H5A
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pageSize; +-B`Fya
if(totalCount % pageSize > 0) nvdo|5
count++; A,2dK}\>
indexes = newint[count]; {#c**' 4
for(int i = 0; i < count; i++){ UI,i2<&
indexes = pageSize * R1%2]?
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} vFL\O
}else{ <R?_Yjsw
this.totalCount = 0; (Wm4JmX%
} <%2A,
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} EpO5_T_
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publicint[] getIndexes(){ dK45&JHoW^
return indexes; HcrI3v|6
} ]-D;t~
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publicvoid setIndexes(int[] indexes){ #''q :^EQ
this.indexes = indexes; rU{E}
} CX8tTbuFl
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publicint getStartIndex(){ Viu+#J;l
return startIndex; l-N4RCt h
} J"x M[c2
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publicvoid setStartIndex(int startIndex){ r95l.v
if(totalCount <= 0) 2eOde(K+
this.startIndex = 0; Pc*+QtQ
elseif(startIndex >= totalCount) bLfbzkNV\1
this.startIndex = indexes Z{|U!tn
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[indexes.length - 1]; `Xbk2KD p
elseif(startIndex < 0) $:YJ<HvG<
this.startIndex = 0; y'9
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else{ f8DF>]WW
this.startIndex = indexes R tR5ij1
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[startIndex / pageSize]; ?Q< o-o;B
} S&C
} r="wd
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publicint getNextIndex(){ l9J ]<gG
int nextIndex = getStartIndex() + nj7wc9z4
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pageSize; ^}-(8~_en
if(nextIndex >= totalCount) {ER%r'(4Z
return getStartIndex(); 6tE<`"P!
else =/k*w#j
return nextIndex; O!b >
} j]#-DIL
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publicint getPreviousIndex(){ 88dq8T4
int previousIndex = getStartIndex() - 9Fl}"p[>L.
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pageSize; @+v;B:
if(previousIndex < 0) !~{AF|2f
return0; 1!x-_h}
else dJh T}"x
return previousIndex; WheJ 7~
} b ;Vy=f
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} i6^COr
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抽象业务类 >qJRpO
java代码: !cs+tm3
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/** ):.
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* Created on 2005-7-12 S.9ki<
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package com.javaeye.common.business; #-9;Hn4x
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import java.io.Serializable; gJNp]I2R
import java.util.List; pcM'j#;
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import org.hibernate.Criteria; W*q[f!@
import org.hibernate.HibernateException; t(4%l4i;X
import org.hibernate.Session; OBF2?[V~
import org.hibernate.criterion.DetachedCriteria; %bnDxCj"
import org.hibernate.criterion.Projections; eZ]4,,m
import P5+FZzQ
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org.springframework.orm.hibernate3.HibernateCallback;
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import tQy@d_a=y
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org.springframework.orm.hibernate3.support.HibernateDaoS Azrc+ k
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upport; Xj;nh?\u
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import com.javaeye.common.util.PaginationSupport; mAk@Q|u
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public abstract class AbstractManager extends %y~=+Sm%m
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HibernateDaoSupport { G)b6Rit
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privateboolean cacheQueries = false; %f.(^<Gu
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privateString queryCacheRegion; eKlh }v
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publicvoid setCacheQueries(boolean bJD2c\qoc
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cacheQueries){ #c V_p
this.cacheQueries = cacheQueries; }bG|(Wp9
} nT0FonK>
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publicvoid setQueryCacheRegion(String o$4n D#P3
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queryCacheRegion){ bz[+g,e2oA
this.queryCacheRegion = +Io[o6*
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queryCacheRegion; )o'&f"/
} qlJP2Ig~
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publicvoid save(finalObject entity){ (5%OAjW
getHibernateTemplate().save(entity); r%hnl9
} }d2]QD#O
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publicvoid persist(finalObject entity){ T?W`g>yM
getHibernateTemplate().save(entity); 3tMFJ ;*`
} iWu$$IV?-
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publicvoid update(finalObject entity){ U}7a;4?
getHibernateTemplate().update(entity); "
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} tL1"Dt>
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publicvoid delete(finalObject entity){ 0+b1R}!2
getHibernateTemplate().delete(entity); C8%Io l
} QDS=M]
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publicObject load(finalClass entity, B98&JoS
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finalSerializable id){ d#.9!m~.
return getHibernateTemplate().load _eAZ_@
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(entity, id); AD4KoT&
} q9w6 6R
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publicObject get(finalClass entity, '{j.5~4y
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finalSerializable id){ [ZS}P
return getHibernateTemplate().get Hq h
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(entity, id); GMLq3_'
} -E#!`~&V
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publicList findAll(finalClass entity){ ["}0umt
return getHibernateTemplate().find("from 2E^zQ>;01
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" + entity.getName()); wn[q?|1
} k/W$)b:Of`
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publicList findByNamedQuery(finalString w?A&X