vpffile.html

Geotools是一个开源的Java GIS工具包,可利用它来开发符合标准的地理信息系统。Geotools提供了OGC(Open Geospatial Consortium)规范的一个实现来作为他们的

<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/net/URI.html" title="class or interface in java.net">URI</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#getNamespace()">getNamespace</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the global schema namespace.
 </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#getNarrativeTable()">getNarrativeTable</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the value of narrativeTable variable file name.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#getPathName()">getPathName</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the full path name for this file</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#getRecordSize()">getRecordSize</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Method <code><code>getRecordSize</code></code> is used to return size in
 bytes of records stored in this table. </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#getRowFromId(java.lang.String, int)">getRowFromId</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;idName,
             int&nbsp;id)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a row with a matching value for the provided column</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#getTypeName()">getTypeName</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the type name for this schema.
 </TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#hasAttributeType(java.lang.String)">hasAttributeType</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;xPath)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This is only used twice in the whole geotools code base, and one of those is for a test, so
 we're removing it from the interface. </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#hasNext()">hasNext</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Determines if the stream contains storage for another object Who knows
 how well this will work on variable length objects</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#isAbstract()">isAbstract</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Is this FeatureType an abstract type?
 </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#isDescendedFrom(org.geotools.feature.FeatureType)">isDescendedFrom</A></B>(<A HREF="../../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>&nbsp;type)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A convenience method for calling <br>
 <code>
 FeatureType f1;
 FeatureType f2;
 f1.isDescendedFrom(f2.getNamespace(), f2.getName());
 </code>
 
 Question: this method duplicates the information provided by getAncestors().
 </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#isDescendedFrom(java.net.URI, java.lang.String)">isDescendedFrom</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/net/URI.html" title="class or interface in java.net">URI</A>&nbsp;nsURI,
                <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;typeName)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Test to determine whether this FeatureType is descended from the given FeatureType. </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/AbstractList.html" title="class or interface in java.util">AbstractList</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#readAllRows()">readAllRows</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Generates a list containing all of the features in the file</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;char</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#readChar()">readChar</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reads a single byte as a character value</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#readDouble()">readDouble</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Retrieves a double from the file</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#readFeature()">readFeature</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Retrieves a feature from the file</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#readFixedSizeData(char, int)">readFixedSizeData</A></B>(char&nbsp;dataType,
                  int&nbsp;instancesCount)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Retrieves a fixed amount of data from the file</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;float</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#readFloat()">readFloat</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Retrieves a floating point number from the file.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#readGeometry(int, int, boolean)">readGeometry</A></B>(int&nbsp;instancesCount,
             int&nbsp;dimensionality,
             boolean&nbsp;readDoubles)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructs an object which is an instance of Geometry
 by reading values from the file.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#readHeader()">readHeader</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Retrieves a number of attributes from the file header</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/data/vpf/file/VPFFile.html#readInteger()">readInteger</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Retrieves an integer value from the file</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">