Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 /P:.qtT(
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 slu(SmQ
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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 |&3x#1A
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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 X(A.X:"
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分页支持类: 2 PqS%`XiS
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java代码: 9Fo fr
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package com.javaeye.common.util; ~]HN9R^&
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import java.util.List; @I`C#~
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publicclass PaginationSupport { 7F^#o-@=J
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publicfinalstaticint PAGESIZE = 30; 5cJ!"
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privateint pageSize = PAGESIZE; ,Lpixnm]
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privateList items; 1'.7_EQ4T
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privateint totalCount; [XVEBA4GI
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privateint[] indexes = newint[0]; }`(N:p
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privateint startIndex = 0; h4|i%,f
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public PaginationSupport(List items, int fKH7xu!V4+
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totalCount){ K5Q43e1
setPageSize(PAGESIZE); 3`E=#ff%
setTotalCount(totalCount); pM;vH]|
setItems(items); &H}r%%|A
setStartIndex(0); Wj|alH9<
} r3E!dTDWq
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public PaginationSupport(List items, int /1N6X.Zb
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totalCount, int startIndex){ &QRE"_g
setPageSize(PAGESIZE); Q;11N7+
setTotalCount(totalCount); c'uhK8|
setItems(items); Hy.AyU|L
setStartIndex(startIndex); @"a6fn
} aj8A8ma*}
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public PaginationSupport(List items, int :x.7vZzxs
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totalCount, int pageSize, int startIndex){ :y*NM,s
setPageSize(pageSize); m>USD?i
setTotalCount(totalCount); >~%e$a7}+
setItems(items); +#U|skl
setStartIndex(startIndex); dr)YzOvba
} 6+r$t#
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publicList getItems(){ pl@O
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return items; NBl+_/2'w
} )?+$x[f!*
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publicvoid setItems(List items){ Z;9>S=w!
this.items = items; ^b: (jI*l
} .2d9?p3Y
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publicint getPageSize(){ T134ZXqqz
return pageSize; 8fA_p}wp
} GjoIm?
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publicvoid setPageSize(int pageSize){ =qN2Xg/
this.pageSize = pageSize; D\IjyZ-O
} SJD@&m%?[
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publicint getTotalCount(){ P96pm6H_;
return totalCount; +]=e;LN $0
} EY*(Bw
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publicvoid setTotalCount(int totalCount){ C{TA.\
if(totalCount > 0){ hxce\OuU0h
this.totalCount = totalCount; %ZHP2j
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int count = totalCount / "KcA
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pageSize; >WY#4
if(totalCount % pageSize > 0) DN4$Jva
count++; r0p w_j
indexes = newint[count]; YK|bXSA[
for(int i = 0; i < count; i++){ [MuEoWrq(}
indexes = pageSize * t78k4?
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} vJAZ%aW
}else{ !9 fz(9
this.totalCount = 0; Gt9&)/#
} O=u1u}CP?
} o7IxJCL=Q
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publicint[] getIndexes(){ ]HpA5q1ck
return indexes; ~?B;!Csk
} 'SQG>F Uy
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publicvoid setIndexes(int[] indexes){ nUkaz*4qU
this.indexes = indexes; f~ }H
} !i=nSqW
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publicint getStartIndex(){ aF03a-qw<
return startIndex; cuOvN"nuNj
} %Uz(Vd#K
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publicvoid setStartIndex(int startIndex){ R<B7K?SxV~
if(totalCount <= 0) 7GDHz.IX
this.startIndex = 0; kdGT{2u
elseif(startIndex >= totalCount) ^eW}XRI
this.startIndex = indexes J\e+}{
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[indexes.length - 1]; N},n `Yl.
elseif(startIndex < 0) @&[T _l
this.startIndex = 0; @A)R_p
else{ +V&{*f)
this.startIndex = indexes o)'y.-@Q
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[startIndex / pageSize]; +F
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} lJ@] [;
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publicint getNextIndex(){ z=$jGL
int nextIndex = getStartIndex() + 7FRmx4(!
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pageSize; ;sHN/eF
if(nextIndex >= totalCount) >>[G1
return getStartIndex(); vTv]U5%:>%
else )V!dBl"Gq
return nextIndex; bXS:x
} c6Y\n%d&
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publicint getPreviousIndex(){ kI%%i>Y}
int previousIndex = getStartIndex() - \>Efd
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pageSize; u, 3#M ~
if(previousIndex < 0) O]qU[y+
return0; ek&kv #G
else [Y`,qB<B
return previousIndex; 9{:O{nl
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抽象业务类 a
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java代码: @)K%2Y`
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/** %Q!`NCe+[
* Created on 2005-7-12 x\QY@9
*/ wY"Q o7
package com.javaeye.common.business; 7.j[a*^
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import java.io.Serializable; '?({;/L
import java.util.List; %$TGzK 1
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import org.hibernate.Criteria; ^ "\R\COQ
import org.hibernate.HibernateException; _D|^.)=U|
import org.hibernate.Session; f
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import org.hibernate.criterion.DetachedCriteria; bO<CR
import org.hibernate.criterion.Projections; hTwA%
import 'g9"Qv?0{`
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org.springframework.orm.hibernate3.HibernateCallback; zq%D/H6J,
import frBX{L
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org.springframework.orm.hibernate3.support.HibernateDaoS A19;1#$=
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upport; k^OV56
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import com.javaeye.common.util.PaginationSupport; Zy_V9j[n
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public abstract class AbstractManager extends +&["HoKg}&
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HibernateDaoSupport { oHs2L-G
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privateboolean cacheQueries = false; ,k G>?4
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privateString queryCacheRegion; 8#Q$zLK42N
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publicvoid setCacheQueries(boolean Ye.r%i&