Package com.alexmerz.graphviz.objects

Class Graph

  • public class Graph
extends Object
    This class represents a graph. A Graph contains Nodes, Edges and Subgraphs

    • Field Detail

      • UNDIRECTED

        public static final int UNDIRECTED
        Constant for an undirected graph
        See Also:
        Constant Field Values

      • DIRECTED

        public static final int DIRECTED
        Constant for an directed graph
        See Also:
        Constant Field Values

    • Constructor Detail

      • Graph

        public Graph()

    • Method Detail

      • addGenericEdgeAttribute

        public void addGenericEdgeAttribute​(String key,
                                    String value)
        Sets a generic attribute for all edges of this graph. This attributes are NOT additionally stored in the Edge objects.
        Parameters:
        key - the attribute name
        value - the attribute value

      • getGenericEdgeAttribute

        public String getGenericEdgeAttribute​(String key)
        Returns a generic attribute of an edge
        Parameters:
        key - the attribute name
        Returns:
        the value of the attribute or null, if the attribute does not exist.

      • addGenericGraphAttribute

        public void addGenericGraphAttribute​(String key,
                                     String value)
        Sets a generic attribute for clusters of this graph. This attributes are NOT additionally stored in the Edge objects.
        Parameters:
        key - the attribute name
        value - the attribute value

      • getGenericGraphAttribute

        public String getGenericGraphAttribute​(String key)
        Returns a generic attribute of the clusters in the graph
        Parameters:
        key - the attribute name
        Returns:
        the value of the attribute or null, if the attribute does not exist.

      • addGenericNodeAttribute

        public void addGenericNodeAttribute​(String key,
                                    String value)
        Sets a generic attribute for all nodes of this graph This attributes are NOT additionally stored in the Node objects.
        Parameters:
        key - the attribute name
        value - the attribute value

      • getGenericNodeAttribute

        public String getGenericNodeAttribute​(String key)
        Returns a generic attribute of a node
        Parameters:
        key - the attribute name
        Returns:
        the value of the attribute or null, if the attribute does not exist.

      • addAttribute

        public void addAttribute​(String key,
                         String value)
        Adds a graph attribute. This attributes are NOT inherited to the attributes of sub graphs.
        Parameters:
        key - the name of the attribute
        value - the value of the attribute

      • getAttribute

        public String getAttribute​(String key)
        Returns an attribute of the Graph or null if not found.
        Parameters:
        key - the name of the attribute
        Returns:
        the value of the attribute

      • addNode

        public void addNode​(Node n)
        Adds a Node object to the graph
        Parameters:
        n - the Node Object to add

      • addEdge

        public void addEdge​(Edge e)
        Adds an Edge object to the graph
        Parameters:
        e - the Edge object to add

      • getId

        public Id getId()
        Returns the Id object to the Graph
        Returns:
        the Id object

      • setId

        public void setId​(Id id)
        Sets the Id object for this graph
        Parameters:
        id -

      • getType

        public int getType()
        Returns the type of the graph
        Returns:
        the type of the graph
        See Also:
        DIRECTED, UNDIRECTED

      • setType

        public void setType​(int type)
        Sets the type of the graph
        Parameters:
        type - the type of the graph
        See Also:
        DIRECTED, UNDIRECTED

      • isStrict

        public boolean isStrict()
        Returns wether the graph is strict or not
        Returns:
        the static state

      • setStrict

        public void setStrict​(boolean isStrict)
        Sets if the graph is strict or not.
        Parameters:
        isStrict -

      • toString

        public String toString()
        Returns a String representation of the graph
        Overrides:
        toString in class Object
        Returns:
        the string representation

      • getSubgraphs

        public ArrayList<Graph> getSubgraphs()
        Returns a list of all sub graphs.
        Returns:
        the subgraphs

      • addSubgraph

        public void addSubgraph​(Graph graph)
        Adds a sub graph to a graph
        Parameters:
        graph -

      • findNode

        public Node findNode​(Id id)
        Tries to find a node of a Graph depending on the given Id object.
        Parameters:
        id - the id object to identify the node
        Returns:
        the node or nulll if not found

      • getNodes

        public ArrayList<Node> getNodes​(boolean thisOnly)
        Returns all Nodes of the graph. If the graph contains subgraphs, you can use the thisOnly parameter to decide if nodes defined in subgraphs should be added to the list also.
        Parameters:
        thisOnly - if true, also include nodes in subgraphs also, else exclude them
        Returns:
        the nodes of the graph

      • getAttributes

        public Hashtable<String,​String> getAttributes()
        Returns all attributes of the graph.
        Returns:
        the attributes

      • getEdges

        public ArrayList<Edge> getEdges()
        Returns all edges of this graph.
        Returns:
        a list of Edge objects