vpffeatureclass.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

<DT><B>Returns:</B><DD>number of distinct attributeTypes available, taking ancestors and taking overrides
         into account.</DL>
</DD>
</DL>
<HR>

<A NAME="getAttributeType(int)"><!-- --></A><H3>
getAttributeType</H3>
<PRE>
public <A HREF="../../../../org/geotools/feature/AttributeType.html" title="interface in org.geotools.feature">AttributeType</A> <B>getAttributeType</B>(int&nbsp;position)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A></CODE></B></DD>
<DD>Gets the schema attributeType at the specified index.
 <p>
 The index is specified with respect to the entire Schema (as defined by this FeatureType and
 it's ancestors).
 <p>
 <ul>
 The index value should not be used with either:
 <li>FeatureType.getAttributeTypes()[index] - as it defines only attributes contributed by
 this FeatureType
 <li>Feature.getAttribute( index ) - as attributes order may or may not be in sequence
 </ul>
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/feature/FeatureType.html#getAttributeType(int)">getAttributeType</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>position</CODE> - a integer index into the complete schema represented by 
                 this FeatureType and its ancestors
<DT><B>Returns:</B><DD>the attribute type at the specified position</DL>
</DD>
</DL>
<HR>

<A NAME="isDescendedFrom(java.net.URI, java.lang.String)"><!-- --></A><H3>
isDescendedFrom</H3>
<PRE>
public boolean <B>isDescendedFrom</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)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A></CODE></B></DD>
<DD>Test to determine whether this FeatureType is descended from the given FeatureType. Think of
 this relationship likes the "extends" relationship in java.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/feature/FeatureType.html#isDescendedFrom(java.net.URI, java.lang.String)">isDescendedFrom</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>nsURI</CODE> - The namespace URI to use.<DD><CODE>typeName</CODE> - The typeName.
<DT><B>Returns:</B><DD>true if descendant, false otherwise.</DL>
</DD>
</DL>
<HR>

<A NAME="isDescendedFrom(org.geotools.feature.FeatureType)"><!-- --></A><H3>
isDescendedFrom</H3>
<PRE>
public boolean <B>isDescendedFrom</B>(<A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>&nbsp;type)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A></CODE></B></DD>
<DD>A convenience method for calling <br>
 <code><pre>
 FeatureType f1;
 FeatureType f2;
 f1.isDescendedFrom(f2.getNamespace(), f2.getName());
 </pre></code>
 <p>
 Question: this method duplicates the information provided by getAncestors().
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/feature/FeatureType.html#isDescendedFrom(org.geotools.feature.FeatureType)">isDescendedFrom</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>type</CODE> - The type to compare to.
<DT><B>Returns:</B><DD>true if descendant, false otherwise.</DL>
</DD>
</DL>
<HR>

<A NAME="isAbstract()"><!-- --></A><H3>
isAbstract</H3>
<PRE>
public boolean <B>isAbstract</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A></CODE></B></DD>
<DD>Is this FeatureType an abstract type?
 <p>
 When true is returned instances of this Feature cannot be created, instead a child
 FeatureType must use this FeatureType as its ancestor.
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/feature/FeatureType.html#isAbstract()">isAbstract</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true if abstract, false otherwise.</DL>
</DD>
</DL>
<HR>

<A NAME="getAncestors()"><!-- --></A><H3>
getAncestors</H3>
<PRE>
public <A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>[] <B>getAncestors</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A></CODE></B></DD>
<DD>Obtain an array of this FeatureType's direct ancestors.
 Implementors should return a non-null array (may be of length 0).
 <p>
 <ul>
 <li>length 0 - a root FeatureType
 <li>length 1 - singe inhieratance
 <li>length 1+ - multiple inheiratance, order is not significant
 </ul>
 </p>
 GetAncestors() indicates *just* the direct parents of this FeatureType.
 It capures the inheirtance relationship from the OGC overview document.
 </p>
 <p>
 Example Code:<pre><code>
 public FeatureType getAncestors()}
     return new FeatureType[]{ getSuper(), };
 }
 </code></pre>
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/feature/FeatureType.html#getAncestors()">getAncestors</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>An array of ancestors.</DL>
</DD>
</DL>
<HR>

<A NAME="duplicate(org.geotools.feature.Feature)"><!-- --></A><H3>
duplicate</H3>
<PRE>
public <A HREF="../../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A> <B>duplicate</B>(<A HREF="../../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A>&nbsp;feature)
                  throws <A HREF="../../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A></CODE></B></DD>
<DD>Create a duplicate of the provided feature, must delegate to an appropriate FeatureFactory
 create method.
 <p>
 The implementation is assumed to make use of AttributeType duplicate as required for a deep
 copy.
 </p>

 //@deprecated This method will be removed in 2.2, please use FeatureFactory obtained from FactoryFinder
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/feature/FeatureType.html#duplicate(org.geotools.feature.Feature)">duplicate</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>feature</CODE> - 
<DT><B>Returns:</B><DD>a deep copy of feature
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="create(java.lang.Object[])"><!-- --></A><H3>
create</H3>
<PRE>
public <A HREF="../../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A> <B>create</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>[]&nbsp;attributes)
               throws <A HREF="../../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A></CODE></B></DD>
<DD>Creates a new feature, with a generated unique featureID.
 <p>
 Generating a FeatureID is less than ideal, as a FeatureID should be something
 special about the "real world object" being modeled as a feature.
 <p>
 As an example: the "Effiel Tower" is a great feature id (there is only one) and we can
 use that Feature ID in serveral systems:
 <ul>
 <li>In a tour guide FeatureTypes one which records (NAME, LOCATION, COST); and
 <li>In a historical referenc