datautilities.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

public static int <B>compare</B>(<A HREF="../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>&nbsp;typeA,
                          <A HREF="../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>&nbsp;typeB)</PRE>
<DL>
<DD>Compare operation for FeatureType.
 
 <p>
 Results in:
 </p>
 
 <ul>
 <li> 1: if typeA is a sub type/reorder/renamespace of typeB </li>
 <li> 0: if typeA and typeB are the same type </li>
 <li> -1: if typeA is not subtype of typeB </li>
 </ul>
 
 <p>
 Comparison is based on AttributeTypes, an IOException is thrown if the
 AttributeTypes are not compatiable.
 </p>
 
 <p>
 Namespace is not considered in this opperations. You may still need to
 reType to get the correct namesapce, or reorder.
 </p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>typeA</CODE> - FeatureType beind compared<DD><CODE>typeB</CODE> - FeatureType being compared against</DL>
</DD>
</DL>
<HR>

<A NAME="isMatch(org.geotools.feature.AttributeType, org.geotools.feature.AttributeType)"><!-- --></A><H3>
isMatch</H3>
<PRE>
public static boolean <B>isMatch</B>(<A HREF="../../../org/geotools/feature/AttributeType.html" title="interface in org.geotools.feature">AttributeType</A>&nbsp;a,
                              <A HREF="../../../org/geotools/feature/AttributeType.html" title="interface in org.geotools.feature">AttributeType</A>&nbsp;b)</PRE>
<DL>
<DD>DOCUMENT ME!
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>a</CODE> - DOCUMENT ME!<DD><CODE>b</CODE> - DOCUMENT ME!
<DT><B>Returns:</B><DD>DOCUMENT ME!</DL>
</DD>
</DL>
<HR>

<A NAME="reType(org.geotools.feature.FeatureType, org.geotools.feature.Feature)"><!-- --></A><H3>
reType</H3>
<PRE>
public static <A HREF="../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A> <B>reType</B>(<A HREF="../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>&nbsp;featureType,
                             <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>Creates duplicate of feature adjusted to the provided featureType.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>featureType</CODE> - FeatureType requested<DD><CODE>feature</CODE> - Origional Feature from DataStore
<DT><B>Returns:</B><DD>An instance of featureType based on feature
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></CODE> - If opperation could not be performed</DL>
</DD>
</DL>
<HR>

<A NAME="template(org.geotools.feature.FeatureType)"><!-- --></A><H3>
template</H3>
<PRE>
public static <A HREF="../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A> <B>template</B>(<A HREF="../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>&nbsp;featureType)
                        throws <A HREF="../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></PRE>
<DL>
<DD>Constructs an empty feature to use as a Template for new content.
 
 <p>
 We may move this functionality to FeatureType.create( null )?
 </p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>featureType</CODE> - Type of feature we wish to create
<DT><B>Returns:</B><DD>A new Feature of type featureType
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></CODE> - if we could not create featureType instance with acceptable
             default values</DL>
</DD>
</DL>
<HR>

<A NAME="template(org.geotools.feature.FeatureType, java.lang.String)"><!-- --></A><H3>
template</H3>
<PRE>
public static <A HREF="../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A> <B>template</B>(<A HREF="../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>&nbsp;featureType,
                               <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;featureID)
                        throws <A HREF="../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></PRE>
<DL>
<DD>DOCUMENT ME!
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>featureType</CODE> - DOCUMENT ME!<DD><CODE>featureID</CODE> - DOCUMENT ME!
<DT><B>Returns:</B><DD>DOCUMENT ME!
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></CODE> - DOCUMENT ME!</DL>
</DD>
</DL>
<HR>

<A NAME="defaultValues(org.geotools.feature.FeatureType)"><!-- --></A><H3>
defaultValues</H3>
<PRE>
public static <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>[] <B>defaultValues</B>(<A HREF="../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>&nbsp;featureType)
                              throws <A HREF="../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></PRE>
<DL>
<DD>DOCUMENT ME!
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>featureType</CODE> - DOCUMENT ME!
<DT><B>Returns:</B><DD>DOCUMENT ME!
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></CODE> - DOCUMENT ME!</DL>
</DD>
</DL>
<HR>

<A NAME="template(org.geotools.feature.FeatureType, java.lang.Object[])"><!-- --></A><H3>
template</H3>
<PRE>
public static <A HREF="../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A> <B>template</B>(<A HREF="../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>&nbsp;featureType,
                               <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;atts)
                        throws <A HREF="../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></PRE>
<DL>
<DD>DOCUMENT ME!
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>featureType</CODE> - DOCUMENT ME!<DD><CODE>atts</CODE> - DOCUMENT ME!
<DT><B>Returns:</B><DD>DOCUMENT ME!
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></CODE> - DOCUMENT ME!</DL>
</DD>
</DL>
<HR>

<A NAME="template(org.geotools.feature.FeatureType, java.lang.String, java.lang.Object[])"><!-- --></A><H3>
template</H3>
<PRE>
public static <A HREF="../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A> <B>template</B>(<A HREF="../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>&nbsp;featureType,
                               <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;string,
                               <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;emptyAtts)
                        throws <A HREF="../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></PRE>
<DL>
<DD><DL>

<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="defaultValue(java.lang.Class)"><!-- --></A><H3>
defaultValue</H3>
<PRE>
public static <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>defaultValue</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Class.html" title="class or interface in java.lang">Class</A>&nbsp;type)</PRE>
<DL>
<DD>Returns a non-null default value for the class that is passed in.  This is a helper class an can't create a 
 default class for any type but it does support:
 <ul>
 <li>String</li>
 <li>Object - will return empty string</li>
 <li>Number</li>
 <li>Character</li>
 <li>JTS Geometries</li>
 </ul>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>type</CODE> - 
<DT><B>Returns:</B><DD></DL>
</DD>
</DL>
<HR>

<A NAME="defaultValues(org.geotools.feature.FeatureType, java.lang.Object[])"><!-- --></A><H3>
defaultValues</H3>
<PRE>
public static <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>[] <B>defaultValues</B>(<A HREF="../../../org/geotools/feature/FeatureType.html" title="interface in org.geotools.feature">FeatureType</A>&nbsp;featureType,
                                     <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;values)
                              throws <A HREF="../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></PRE>
<DL>
<DD>DOCUMENT ME!
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>featureType</CODE> - DOCUMENT ME!<DD><CODE>values</CODE> - DOCUMENT ME!
<DT><B>Returns:</B><DD>DOCUMENT ME!
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></CODE> - DOCUMENT ME!
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/ArrayIndexOutOfBoundsException.html" title="class or interface in java.lang">ArrayIndexOutOfBoundsException</A></CODE> - DOCUMENT ME!</DL>
</DD>
</DL>
<HR>

<A NAME="defaultValue(org.geotools.feature.AttributeType)"><!-- --></A><H3>
defaultValue</H3>
<PRE>
public static <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>defaultValue</B>(<A HREF="../../../org/geotools/feature/AttributeType.html" title="interface in org.geotools.feature">AttributeType</A>&nbsp;attributeType)
                           throws <A HREF="../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></PRE>
<DL>
<DD>Provides a defautlValue for attributeType.
 
 <p>
 Will return null if attributeType isNillable(), or attempt to use
 Reflection, or attributeType.parse( null )
 </p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>attributeType</CODE> - 
<DT><B>Returns:</B><DD>null for nillable attributeType, attempt at reflection
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../org/geotools/feature/IllegalAttributeException.html" title="class in org.geotools.feature">IllegalAttributeException</A></CODE> - If value cannot be constructed for attribtueType</DL>
</DD>
</DL>
<HR>

<A NAME="reader(org.geotools.feature.Feature[])"><!-- --></A><H3>
reader</H3>
<PRE>
public static <A HREF="../../../org/geotools/data/FeatureReader.html" title="interface in org.geotools.data">FeatureReader</A> <B>reader</B>(<A HREF="../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A>[]&nbsp;features)
                            throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD>Creates a FeatureReader for testing.