graph.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;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/graph/structure/Graph.html#visitNodes(org.geotools.graph.structure.GraphVisitor)">visitNodes</A></B>(<A HREF="../../../../org/geotools/graph/structure/GraphVisitor.html" title="interface in org.geotools.graph.structure">GraphVisitor</A>&nbsp;visitor)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Applies the visitor pattern to the nodes of the graph.</TD>
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&nbsp;
<P>

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<B>Field Detail</B></FONT></TD>
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<A NAME="PASS_AND_CONTINUE"><!-- --></A><H3>
PASS_AND_CONTINUE</H3>
<PRE>
public static final int <B>PASS_AND_CONTINUE</B></PRE>
<DL>
<DD>Signal to indicate that a graph component meets the requirements of a 
  query against a graph and that the query should continue.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.geotools.graph.structure.Graph.PASS_AND_CONTINUE">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="PASS_AND_STOP"><!-- --></A><H3>
PASS_AND_STOP</H3>
<PRE>
public static final int <B>PASS_AND_STOP</B></PRE>
<DL>
<DD>Signal to indicate that a graph component meets the requirements of a 
  query against a graph and that the query should end.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.geotools.graph.structure.Graph.PASS_AND_STOP">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="FAIL_QUERY"><!-- --></A><H3>
FAIL_QUERY</H3>
<PRE>
public static final int <B>FAIL_QUERY</B></PRE>
<DL>
<DD>Signal to indicate that a graph component does NOT meet the requirements 
 of a query made against the graph.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.geotools.graph.structure.Graph.FAIL_QUERY">Constant Field Values</A></DL>
</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->


<!-- ============ METHOD DETAIL ========== -->

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<B>Method Detail</B></FONT></TD>
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<A NAME="getNodes()"><!-- --></A><H3>
getNodes</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Collection.html" title="class or interface in java.util">Collection</A> <B>getNodes</B>()</PRE>
<DL>
<DD>Returns the nodes of the graph.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>A collection of Node objects.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/graph/structure/Node.html" title="interface in org.geotools.graph.structure"><CODE>Node</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getEdges()"><!-- --></A><H3>
getEdges</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Collection.html" title="class or interface in java.util">Collection</A> <B>getEdges</B>()</PRE>
<DL>
<DD>Returns the edges of the graph.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>A collection of Edge objects.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/graph/structure/Edge.html" title="interface in org.geotools.graph.structure"><CODE>Edge</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="queryNodes(org.geotools.graph.structure.GraphVisitor)"><!-- --></A><H3>
queryNodes</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/List.html" title="class or interface in java.util">List</A> <B>queryNodes</B>(<A HREF="../../../../org/geotools/graph/structure/GraphVisitor.html" title="interface in org.geotools.graph.structure">GraphVisitor</A>&nbsp;visitor)</PRE>
<DL>
<DD>Performs a query against the nodes of the graph. Each Node object
 contained in the graph is passed to a GraphVisitor to determine if it
 meets the query criteria.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>visitor</CODE> - Determines if node meets query criteria. 
 Returns MEET_AND_CONTINUE to signal that the node meets the query criteria 
 and the query should continue.<BR>
 Returns MEET_AND_STOP to signal that the node meest the query criteria and
 the query should stop.<BR>
 FAIL_QUERY to signal that the node does NOT meet the query criteria.
<DT><B>Returns:</B><DD>A collection of nodes that meet the query criteria.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/graph/structure/Node.html" title="interface in org.geotools.graph.structure"><CODE>Node</CODE></A>, 
<A HREF="../../../../org/geotools/graph/structure/GraphVisitor.html" title="interface in org.geotools.graph.structure"><CODE>GraphVisitor</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="queryEdges(org.geotools.graph.structure.GraphVisitor)"><!-- --></A><H3>
queryEdges</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/List.html" title="class or interface in java.util">List</A> <B>queryEdges</B>(<A HREF="../../../../org/geotools/graph/structure/GraphVisitor.html" title="interface in org.geotools.graph.structure">GraphVisitor</A>&nbsp;visitor)</PRE>
<DL>
<DD>Performs a query against the edges of the graph. Each Edge object
 contained in the graph is passed to a GraphVisitor to determine if it
 meets the query criteria.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>visitor</CODE> - Determines if the meets the query criteria. <BR>
 Returns MEET_AND_CONTINUE to signal that the edge meets the query criteria 
 and the query should continue.<BR>
 Returns MEET_AND_STOP to signal that the edge meest the query criteria and
 the query should stop.<BR>
 FAIL_QUERY to signal that the edge does NOT meet the query criteria.
<DT><B>Returns:</B><DD>A collection of edges that meet the query criteria.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/graph/structure/Edge.html" title="interface in org.geotools.graph.structure"><CODE>Edge</CODE></A>, 
<A HREF="../../../../org/geotools/graph/structure/GraphVisitor.html" title="interface in org.geotools.graph.structure"><CODE>GraphVisitor</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="visitNodes(org.geotools.graph.structure.GraphVisitor)"><!-- --></A><H3>
visitNodes</H3>
<PRE>
public void <B>visitNodes</B>(<A HREF="../../../../org/geotools/graph/structure/GraphVisitor.html" title="interface in org.geotools.graph.structure">GraphVisitor</A>&nbsp;visitor)</PRE>
<DL>
<DD>Applies the visitor pattern to the nodes of the graph.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>visitor</CODE> - </DL>
</DD>
</DL>
<HR>

<A NAME="visitEdges(org.geotools.graph.structure.GraphVisitor)"><!-- --></A><H3>
visitEdges</H3>
<PRE>
public void <B>visitEdges</B>(<A HREF="../../../../org/geotools/graph/structure/GraphVisitor.html" title="interface in org.geotools.graph.structure">GraphVisitor</A>&nbsp;visitor)</PRE>
<DL>
<DD>Applies the visitor pattern to the edges of the graph.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>visitor</CODE> - </DL>
</DD>
</DL>
<HR>

<A NAME="getNodesOfDegree(int)"><!-- --></A><H3>
getNodesOfDegree</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/List.html" title="class or interface in java.util">List</A> <B>getNodesOfDegree</B>(int&nbsp;n)</PRE>
<DL>
<DD>Returns all the nodes in the graph of a specified degree. The degree of 
 a node is the number of edges that are adjacent to the node.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>n</CODE> - The desired degree of nodes to be returned.
<DT><B>Returns:</B><DD>A collection of nodes of degree n.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/graph/structure/Node.html#getDegree()"><CODE>Node.getDegree()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getVisitedNodes(boolean)"><!-- --></A><H3>
getVisitedNodes</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/List.html" title="class or interface in java.util">List</A> <B>getVisitedNodes</B>(boolean&nbsp;visited)</PRE>
<DL>
<DD>Returns all the nodes in the graph that have been marked as visited or
 non-visited.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>visited</CODE> - True if node is visited, false if node is unvisited.
<DT><B>Returns:</B><DD>List of nodes marked as visited / non-visited.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/graph/structure/Graphable.html#isVisited()"><CODE>Graphable.isVisited()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getVisitedEdges(boolean)"><!-- --></A><H3>
getVisitedEdges</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/List.html" title="class or interface in java.util">List</A> <B>getVisitedEdges</B>(boolean&nbsp;visited)</PRE>
<DL>
<DD>Returns all the edges in the graph that have been marked as visited or
 non-visited.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>visited</CODE> - True if edge is visited, false if edge is unvisited.
<DT><B>Returns:</B><DD>List of edges marked as visited / non-visited.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/graph/structure/Graphable.html#isVisited()"><CODE>Graphable.isVisited()</CODE></A></DL>
</DD>
</DL>
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