Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ^Yg|P&e(;
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 qr<-eJf
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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 dA_V:HP
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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 UIm[DYMS
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分页支持类: l&e5_]+%
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java代码: ]%WD} 4e
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package com.javaeye.common.util; Bsih<`KF^
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import java.util.List; c"QkE*
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publicclass PaginationSupport { %O4}i@Fe
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publicfinalstaticint PAGESIZE = 30; _taHf %\4
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privateint pageSize = PAGESIZE; d-#u/{jG)
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privateList items; &?5{z\;1"
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privateint totalCount; g~$GE},,
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privateint[] indexes = newint[0]; Ok~W@sYST
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privateint startIndex = 0; GP7)m
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public PaginationSupport(List items, int 6iV"Tl{z-
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totalCount){ #$vhC u<I
setPageSize(PAGESIZE); 8KL_PwRX_f
setTotalCount(totalCount); +{=_|3(
setItems(items); =|WV^0=S'%
setStartIndex(0); 3A}nNHpN
} =p&'_a^$
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public PaginationSupport(List items, int >`rNT|rg
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totalCount, int startIndex){ +=B}R
setPageSize(PAGESIZE); _ \y0 mc4
setTotalCount(totalCount); !>Qc2&ZV
setItems(items); _w5~/PbWt
setStartIndex(startIndex); PhI6dB`
} &T|&D[@
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public PaginationSupport(List items, int Jq+$_Uqd
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totalCount, int pageSize, int startIndex){ Rm\'];
setPageSize(pageSize); u6S0t?Udap
setTotalCount(totalCount); zcD_}t_K
setItems(items); tMPXvE
setStartIndex(startIndex); mZ0oa-Iy
} %Dr4~7=7a
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publicList getItems(){ l
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return items; @BHS5^|
} {i%xs#0h
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publicvoid setItems(List items){ ^Mvsq)
this.items = items; 1f pS"_}
} J PzQBc5e
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publicint getPageSize(){ Wru
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return pageSize; ?m_R U
} c!u}KVH
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publicvoid setPageSize(int pageSize){ Dy{`">a
this.pageSize = pageSize; (P>eWw\0
} u0oYb_Yv
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publicint getTotalCount(){ vb"dX0)<
return totalCount; 1-NX>E5
} dj'8x48H2W
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publicvoid setTotalCount(int totalCount){ `F+x]<m!
if(totalCount > 0){ ssJDaf79
this.totalCount = totalCount; g=YiR/O1QN
int count = totalCount / cVHE}0Xd(
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pageSize; YT(1
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if(totalCount % pageSize > 0) /E4 }d=5L
count++; ,8"[ /@
indexes = newint[count]; C}P
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for(int i = 0; i < count; i++){ R,5$ 0_]|+
indexes = pageSize * 61rh\<bn
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} ;`PkmAg
}else{ PSQ:'
this.totalCount = 0; `)C`_g3Ew
} &<P^Tvqq&
} 4bFVyv
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publicint[] getIndexes(){ `i)ePiE
return indexes; ]zq_gV8k
} PD
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publicvoid setIndexes(int[] indexes){ h. (;GJO
this.indexes = indexes; ;7n*PBUJJ
} ocuVDC
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publicint getStartIndex(){ x^O2Lj,w\
return startIndex; +l?ro[#6&.
} HFx"fT
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publicvoid setStartIndex(int startIndex){ >eTgP._
if(totalCount <= 0) @oc%4~zl
this.startIndex = 0; ]vkHU6d
elseif(startIndex >= totalCount) .f<VmUca
this.startIndex = indexes .yfqS|(
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[indexes.length - 1]; Q%VR@[`\
elseif(startIndex < 0) P "_}F
this.startIndex = 0; L%O8vn^3
else{ j _9<=Vu
this.startIndex = indexes P ~
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[startIndex / pageSize]; |Sv #f2`
} 2[&-y[1
} I;Fy
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publicint getNextIndex(){ D:vUy*
int nextIndex = getStartIndex() + I nK)O';
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pageSize; wYMX1=
if(nextIndex >= totalCount) jzA8f+:q
return getStartIndex(); *n_4Rr
else wY_-
return nextIndex; ZUJOBjb`
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} RowiSW
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publicint getPreviousIndex(){ ^?]H$e
int previousIndex = getStartIndex() - LP-Q'vb<=
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pageSize; :;WDPRx
if(previousIndex < 0) N5Mz=UgB
return0; yW(+?7U
else ZpctsCz]
return previousIndex; })SdaZ
} T_%]#M
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} yj+b/9My
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抽象业务类 :@Dos'0Px
java代码: 'I>#0VRr
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/** ~tuFjj^
* Created on 2005-7-12 _";pk _
*/ xy3%z
package com.javaeye.common.business; vl~
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import java.io.Serializable; *>$)#?t
import java.util.List; [IBk-opap
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import org.hibernate.Criteria; GiwA$^Hg\
import org.hibernate.HibernateException; _1c_TM h}9
import org.hibernate.Session; *`.{K12T
import org.hibernate.criterion.DetachedCriteria;
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import org.hibernate.criterion.Projections; .
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import *9(1:N;#
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org.springframework.orm.hibernate3.HibernateCallback; Vot+gCZ
import `80Hxp@
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org.springframework.orm.hibernate3.support.HibernateDaoS 5m?$\h
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upport; gK\7^95
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import com.javaeye.common.util.PaginationSupport; ~RAH -]
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public abstract class AbstractManager extends r+pjv_R
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HibernateDaoSupport { swL|Ff`$
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privateboolean cacheQueries = false; <u wCP4E
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privateString queryCacheRegion; I'b]s~u
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publicvoid setCacheQueries(boolean B&N&e