Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 BAJEn6f?
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Q?1'
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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 8J5{}4s\f
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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 CO)BF%?B
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分页支持类: )/B'
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java代码: o<J_?7c~}
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package com.javaeye.common.util; tB,1+I=
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import java.util.List; L,KK{o|Eq
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publicclass PaginationSupport { & rsNB:!
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publicfinalstaticint PAGESIZE = 30; _NkVi_UX
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privateint pageSize = PAGESIZE; qYwEPGa\
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privateList items; 3lZ5N@z69
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privateint totalCount; ;:^^Qfp
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privateint[] indexes = newint[0]; CP%?,\
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privateint startIndex = 0; 5LIbHSK
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public PaginationSupport(List items, int u4W2{
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totalCount){ &~6W!w
setPageSize(PAGESIZE); [q<Vm-
setTotalCount(totalCount); pyf/%9R:d
setItems(items); }uCC~ <^
setStartIndex(0); &idPO{G
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public PaginationSupport(List items, int X}Oo5SNgff
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totalCount, int startIndex){ R
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setPageSize(PAGESIZE); b/yXE)3
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setTotalCount(totalCount); (B0tgg^jj,
setItems(items); 5y1:oiE/
setStartIndex(startIndex); tbNIl cAWS
} 3~r>G
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public PaginationSupport(List items, int zx(=ArCRr
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totalCount, int pageSize, int startIndex){ -=+@/@nV
setPageSize(pageSize); {p70(
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setTotalCount(totalCount); G!^}z(Mgi
setItems(items); w7;,+Jq
setStartIndex(startIndex); .o&Vu,/H
} ]:6M!+?(
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publicList getItems(){ YyF=u~l
return items; `u *:wJsv
} TsvF~Gdp
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publicvoid setItems(List items){ )6k([u%;B
this.items = items; Ag6^>xb^
} E &wz0d;gf
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publicint getPageSize(){ {cW%i:
return pageSize; AMm)E
} uxKj7!(#
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publicvoid setPageSize(int pageSize){ ISbhC!59
this.pageSize = pageSize; '0\v[f{K3G
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publicint getTotalCount(){ Zdm7As]
return totalCount; lV*dQwa?i
} 'H]&$AZ;@
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publicvoid setTotalCount(int totalCount){ q\`0'Z,
if(totalCount > 0){ >7[o=!^:4
this.totalCount = totalCount; Vzs_g]V
int count = totalCount / j&c YRKpz
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pageSize; BSMM3jXb
if(totalCount % pageSize > 0) uxjx~+qFd
count++; mHY R?
indexes = newint[count]; "s!|8F6$
for(int i = 0; i < count; i++){ Z#1'STg
indexes = pageSize * FthrI
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} n'42CE
}else{ 5N_w(B
this.totalCount = 0; zD9gE
} 1h[xVvo<L
} SFiK_;
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publicint[] getIndexes(){ KH~o0 W
return indexes; 'Y%@fZf x
} 2#1G)XI
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publicvoid setIndexes(int[] indexes){ w`Ss MI
this.indexes = indexes; s9p~
} BKfkB[*F
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publicint getStartIndex(){ YIc|0[ ]*|
return startIndex; 8q5
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} 7@6B\':
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publicvoid setStartIndex(int startIndex){ +4r.G(n),
if(totalCount <= 0) bh~"LQS1
this.startIndex = 0; @uJ^k
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elseif(startIndex >= totalCount) M(8Mj[>>Rj
this.startIndex = indexes h5do?b v!
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[indexes.length - 1]; oQS_rv\Ber
elseif(startIndex < 0) 3R=R k
this.startIndex = 0; I=DvP;!
else{ 3`mM0,fY
this.startIndex = indexes z5|m`$gy
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[startIndex / pageSize]; Bc!ZHW*&
} }5??n~:*5
} m,"N4a@
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publicint getNextIndex(){ @}8~TbP
int nextIndex = getStartIndex() + b;O@|HK&~
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pageSize; B'kV.3t
if(nextIndex >= totalCount) s;9>YV2at
return getStartIndex(); Uh tk`2O
else Jj:Bi&C
return nextIndex; JR_s-&