Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Qz(2Iu{E]
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 l SdA7
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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 {WV"]O8IV
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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 nRc\!4
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分页支持类: lo>9 \ Po
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java代码: ]6B9\C.2-_
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package com.javaeye.common.util; nDdY~f.B
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import java.util.List; ~'%d]s+q
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publicclass PaginationSupport { ={%'tv`
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publicfinalstaticint PAGESIZE = 30; B`e/ /
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privateint pageSize = PAGESIZE; Kj4BVs
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privateList items; 4Y?2u
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privateint totalCount; zN!W_2W*
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privateint[] indexes = newint[0]; U!q2bF<@
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privateint startIndex = 0; pRV.\*:c
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public PaginationSupport(List items, int dP_QkO
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totalCount){ 1ARtFR2C{b
setPageSize(PAGESIZE); 6d]4
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setTotalCount(totalCount); G,!j P2S
setItems(items); ^ slIR!L
setStartIndex(0); Dst;sLr[,
} s`=| D'G(=
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public PaginationSupport(List items, int zK~8@{l}_"
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totalCount, int startIndex){ .zZfP+Q]8
setPageSize(PAGESIZE); gGvL6Fu
setTotalCount(totalCount); 5
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setItems(items); =F_uK7W
setStartIndex(startIndex); s?}qia\~m
} =hTJp/L
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public PaginationSupport(List items, int 5%2~/
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totalCount, int pageSize, int startIndex){ M
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setPageSize(pageSize); RL4|!HzR
setTotalCount(totalCount);
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setItems(items); ra*|HcLD
setStartIndex(startIndex); ks.p)F>]
} _m?i$5
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publicList getItems(){ HE+' fQ!R
return items; U>*@VOgB
} >bV3~m$a+
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publicvoid setItems(List items){ {2 q"9Ox"
this.items = items; [!%5(Ro_
} &'12,'8
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publicint getPageSize(){ Zuzwc [Z1
return pageSize; VgXT4gO!
} .)tQ&2
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publicvoid setPageSize(int pageSize){ uxxk&+M
this.pageSize = pageSize; x~}&t+FK
} x} =,'Ko}3
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publicint getTotalCount(){ ,Dv*<La`\
return totalCount; \uHC 9}0
} |Jx:#OM
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publicvoid setTotalCount(int totalCount){ {H,O@
if(totalCount > 0){ T4:H:
this.totalCount = totalCount; m&=Dy5
int count = totalCount / t }4
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pageSize; #L!`n)J"
if(totalCount % pageSize > 0) ef*Z;HI0
count++; Y`22DFO
indexes = newint[count]; /F.<Gz;w
for(int i = 0; i < count; i++){ &,{>b[
indexes = pageSize * tF,`v{-up
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} SVVE b6&
}else{ $A~aNI
this.totalCount = 0; -`5]%.E&8
} xT&/xZLT
} [gUD +
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publicint[] getIndexes(){ r(wf>w3
return indexes; C"n!mr{srt
} *P\lzM
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publicvoid setIndexes(int[] indexes){ ,1 H|{ <
this.indexes = indexes; O+mEE>:w%
} /
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publicint getStartIndex(){ `%[m%Y9h
return startIndex; c86?-u')
} <=|^\r
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publicvoid setStartIndex(int startIndex){ FP&Ykx~
if(totalCount <= 0) F\&wFA'J
this.startIndex = 0; 56YqYu.
elseif(startIndex >= totalCount) 91R7Rrne
this.startIndex = indexes vxf09v{-
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[indexes.length - 1]; ZL0Vx6Ph
elseif(startIndex < 0) en|~`]HF
this.startIndex = 0; t|V5[n!
else{ Heqr1btK
this.startIndex = indexes PSAEW.L
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[startIndex / pageSize]; Rmn|!C%%K
} /kr|}`#
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} [H!do$[>
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publicint getNextIndex(){ =@O&$&
int nextIndex = getStartIndex() + %Qj$@.*:
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pageSize; VXk[p
if(nextIndex >= totalCount) tol-PJS}
return getStartIndex(); hyPS 6Y'1
else ^3vI
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return nextIndex; A]QGaWK
} D
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publicint getPreviousIndex(){ 30w(uF
int previousIndex = getStartIndex() - 8@;R2]Q
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pageSize; oJ5n*[qUI
if(previousIndex < 0) '_DB0_Dp
return0; 66B,Krz1n
else j."V>p8u$
return previousIndex; KJ&I4CU]^
} j-aTpN
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} ORX<ZOt1
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抽象业务类 3LQu+EsS
java代码: n|.eL8lX.<
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/**
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* Created on 2005-7-12 9;*B*S~znW
*/ OP(om$xm
package com.javaeye.common.business; fi'zk
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import java.io.Serializable; &!:mL],
import java.util.List; 0%rE*h9+
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import org.hibernate.Criteria; Mf5*Wjz.Mc
import org.hibernate.HibernateException; :`BG/
import org.hibernate.Session; 7/]Ra
import org.hibernate.criterion.DetachedCriteria; j/wQ2"@a
import org.hibernate.criterion.Projections; xG4 C 6s
import \
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org.springframework.orm.hibernate3.HibernateCallback; LCIe1P2
import N6\m*j,`
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org.springframework.orm.hibernate3.support.HibernateDaoS rx#GrV*y
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upport; P_Gu~B!Y
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import com.javaeye.common.util.PaginationSupport; IWddJb~hu
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public abstract class AbstractManager extends =yJc pj
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HibernateDaoSupport { ;l `(1Q/
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privateboolean cacheQueries = false; #Ph8?
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privateString queryCacheRegion;
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publicvoid setCacheQueries(boolean T.{]t6t$U
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cacheQueries){ A)SnPbI-p
this.cacheQueries = cacheQueries; h|z59h&X8G
} 2xy{g&G
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publicvoid setQueryCacheRegion(String 8v^AVg
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queryCacheRegion){ >A L^y(G
this.queryCacheRegion = j=Q ?d]
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queryCacheRegion; SrdCLT8
} F&+_z&n