basicgraph.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 <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><B>Description copied from interface: <CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A></CODE></B></DD>
<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>Specified by:</B><DD><CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html#queryEdges(org.geotools.graph.structure.GraphVisitor)">queryEdges</A></CODE> in interface <CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A></CODE></DL>
</DD>
<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/Graph.html#queryEdges(org.geotools.graph.structure.GraphVisitor)"><CODE>Graph.queryEdges(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><B>Description copied from interface: <CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A></CODE></B></DD>
<DD>Applies the visitor pattern to the nodes of the graph.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html#visitNodes(org.geotools.graph.structure.GraphVisitor)">visitNodes</A></CODE> in interface <CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>visitor</CODE> - <DT><B>See Also:</B><DD><A HREF="../../../../../org/geotools/graph/structure/Graph.html#visitNodes(org.geotools.graph.structure.GraphVisitor)"><CODE>Graph.visitNodes(GraphVisitor)</CODE></A></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><B>Description copied from interface: <CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A></CODE></B></DD>
<DD>Applies the visitor pattern to the edges of the graph.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html#visitEdges(org.geotools.graph.structure.GraphVisitor)">visitEdges</A></CODE> in interface <CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>visitor</CODE> - <DT><B>See Also:</B><DD><A HREF="../../../../../org/geotools/graph/structure/Graph.html#visitEdges(org.geotools.graph.structure.GraphVisitor)"><CODE>Graph.visitEdges(GraphVisitor)</CODE></A></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><B>Description copied from interface: <CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A></CODE></B></DD>
<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>Specified by:</B><DD><CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html#getNodesOfDegree(int)">getNodesOfDegree</A></CODE> in interface <CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A></CODE></DL>
</DD>
<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/Graph.html#getNodesOfDegree(int)"><CODE>Graph.getNodesOfDegree(int)</CODE></A>, 
<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><B>Description copied from interface: <CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A></CODE></B></DD>
<DD>Returns all the nodes in the graph that have been marked as visited or
 non-visited.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html#getVisitedNodes(boolean)">getVisitedNodes</A></CODE> in interface <CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A></CODE></DL>
</DD>
<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/Graph.html#getVisitedNodes(boolean)"><CODE>Graph.getVisitedNodes(boolean)</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><B>Description copied from interface: <CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A></CODE></B></DD>
<DD>Returns all the edges in the graph that have been marked as visited or
 non-visited.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html#getVisitedEdges(boolean)">getVisitedEdges</A></CODE> in interface <CODE><A HREF="../../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A></CODE></DL>
</DD>
<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/Graph.html#getVisitedEdges(boolean)"><CODE>Graph.getVisitedEdges(boolean)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="initNodes()"><!-- --></A><H3>
initNodes</H3>
<PRE>
public void <B>initNodes</B>()</PRE>
<DL>
<DD>Initializes the nodes in the graph by setting all visited flags to false
 and all visited counts to zero.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../org/geotools/graph/structure/basic/BasicGraphable.html#isVisited()"><CODE>BasicGraphable.isVisited()</CODE></A>, 
<A HREF="../../../../../org/geotools/graph/structure/basic/BasicGraphable.html#getCount()"><CODE>BasicGraphable.getCount()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="initEdges()"><!-- --></A><H3>
initEdges</H3>
<PRE>
public void <B>initEdges</B>()</PRE>
<DL>
<DD>Initializes the edges in the graph by setting all visited flags to false
 and all visited counts to zero.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../org/geotools/graph/structure/basic/BasicGraphable.html#isVisited()"><CODE>BasicGraphable.isVisited()</CODE></A>, 
<A HREF="../../../../../org/geotools/graph/structure/basic/BasicGraphable.html#getCount()"><CODE>BasicGraphable.getCount()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>toString</B>()</PRE>
<DL>
<DD>Returns the string representation of the graph which is
 just the string representation of the edge and node collections.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>String represtentaton of graph.</DL>
</DD>
</DL>
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