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来自「Perst开源实时数据库」· HTM 代码 · 共 106 行
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<HTML><HEAD><META http-equiv="Content-Type" content="text/html; charset=UTF-8"><TITLE>Perst.BitIndex</TITLE><LINK REL=STYLESHEET HREF="../CommentReport.css" TYPE="text/css"></HEAD><BODY topmargin=0 rightmargin=0 leftmargin=0 style="background-image: url(../titletile.jpg); background-repeat:repeat-x; background-position: 0 0;" ><DIV CLASS="PageHeading">Perst.BitIndex Interface</DIV><DIV CLASS="Description">
Interface of bit index.
Bit index allows to effiicently search object with specified
set of properties. Each object has associated mask of 32 bites.
Meaning of bits is application dependent. Usually each bit stands for
some binary or boolean property, for example "sex", but it is possible to
use group of bits to represent enumerations with more possible values.
<P></DIV><IMG src="../GradLeft.jpg" width=7 height=378 alt="" border="0" style="position:absolute; left:10; top:18;z-Index:2"><IMG src="../GradTop.jpg" width=352 height=7 alt="" border="0" align="top" style="position:absolute; left:10; top:18; z-index:1"><DIV CLASS="Remarks"><SPAN CLASS="RemarkHdrX">Access: </SPAN>Public</DIV><TABLE CLASS="InfoTable" cellpadding=0 cellspacing=0><TR height=20><TD width=20> </TD><TD valign=top align=left width=9 bgcolor="#cccc66"><IMG SRC="../graycorner.jpg" align=top></TD><TD CLASS="TableLightLabel" WIDTH=206>Members</TD><TD CLASS="TableLightLabel" >Description</TD><TD width=20> </TD></TR><TR height=20><TD width=20> </TD><TD CLASS="TableLightDesc"> </TD><TD CLASS="TableLightDesc"><A HREF="CWP4.HTM" TARGET="CNTFRAME">Get</A></TD><TD CLASS="TableLightDesc">
Get properties of specified object
<P></TD><TD width=20> </TD></TR><TR height=20><TD width=20> </TD><TD CLASS="TableLightDesc"> </TD><TD CLASS="TableLightDesc"><A HREF="CWP6.HTM" TARGET="CNTFRAME">Put</A></TD><TD CLASS="TableLightDesc">
Put new object in the index. If such objct already exists in index, then its
mask will be rewritten
<P></TD><TD width=20> </TD></TR><TR height=20><TD width=20> </TD><TD CLASS="TableLightDesc"> </TD><TD CLASS="TableLightDesc"><A HREF="CWP7.HTM" TARGET="CNTFRAME">this</A></TD><TD CLASS="TableLightDesc"> Access object bitmask
<P></TD><TD width=20> </TD></TR><TR height=20><TD width=20> </TD><TD CLASS="TableLightDesc"> </TD><TD CLASS="TableLightDesc"><A HREF="CWP9.HTM" TARGET="CNTFRAME">Remove</A></TD><TD CLASS="TableLightDesc">
Remove object from the index
<P></TD><TD width=20> </TD></TR><TR height=20><TD width=20> </TD><TD CLASS="TableLightDesc"> </TD><TD CLASS="TableLightDesc"><A HREF="CWP10.HTM" TARGET="CNTFRAME">Size</A></TD><TD CLASS="TableLightDesc"> Get number of objects in the index
<P></TD><TD width=20> </TD></TR><TR height=20><TD width=20> </TD><TD CLASS="TableLightDesc"> </TD><TD CLASS="TableLightDesc"><A HREF="CWP11.HTM" TARGET="CNTFRAME">Clear</A></TD><TD CLASS="TableLightDesc"> Remove all objects from the index
<P></TD><TD width=20> </TD></TR><TR height=20><TD width=20> </TD><TD CLASS="TableLightDesc"> </TD><TD CLASS="TableLightDesc"><A HREF="CWP12.HTM" TARGET="CNTFRAME">GetEnumerator</A></TD><TD CLASS="TableLightDesc">
Get enumerator for selecting objects with specified properties.
<P></TD><TD width=20> </TD></TR><TR height=20><TD width=20> </TD><TD CLASS="TableLightDesc"> </TD><TD CLASS="TableLightDesc"><A HREF="CWP13.HTM" TARGET="CNTFRAME">Select</A></TD><TD CLASS="TableLightDesc">
Get enumerable collection for selecting objects with specified properties.
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