ProjektGraph/graph/Graph.java

package graph;

import java.util.Objects;
import java.util.Vector;

public abstract class Graph<T extends VertexMarking, U extends EdgeMarking> {

    // ATTRIBUTE

    private String name;
    private Vector<MarkedVertex<T>> vertexes;
    private Vector<MarkedEdge<U, T>> edges;


    // KONSTRUKTOREN

    public Graph() {
        this.edges = new Vector<>();
        this.vertexes = new Vector<>();
    }


    public Graph(String s) {
        this();
        this.name = s;
    }


    // GET-ER

    public String getName() {
        return this.name;
    }


    public Vector<MarkedEdge<U, T>> getAllEdges() {
        return this.edges;
    }


    public Vector<MarkedVertex<T>> getAllVertexes() {
        return this.vertexes;
    }


    // SET-ER

    public void setName(String s) {
        this.name = s;
    }


    // Ausgabe
    public String toString() {
        return "";
    }


    // HINZUFÜGEN

    // Kante hinzufügen
    public void addEdge(MarkedEdge<U, T> e) {
        this.edges.add(e);
    }


    // Knoten hinzufügen
    public void addVertex(MarkedVertex<T> n) {
        this.vertexes.add(n);
    }


    // LÖSCHEN

    // Kante löschen
    public void removeEdge(MarkedEdge<U, T> e) {
        this.edges.remove(e);
    }


    public void removeEdge(String s) throws NameDoesNotExistException{
        for (MarkedEdge<U, T> i: this.edges) {
            if (Objects.equals(i.getName(), s)) {
                removeEdge(i);
                return;
            }
        }
        throw new NameDoesNotExistException("One of the Edges might not exist");
    }


    // Knoten löschen
    public void removeVertex(MarkedVertex<T> n) {
        this.vertexes.remove(n);
    }


    public void removeVertex(String s) throws NameDoesNotExistException{
        for (MarkedVertex<T> i: this.vertexes) {
            if (Objects.equals(i.getName(), s)) {
                removeVertex(i);
                return;
            }
        }
        throw new NameDoesNotExistException("One of the Vertexes might not exist");
    }


    // GRAPH EIGENSCHAFTEN

    // Kantenmenge
    public int numberOfEdges() {
        return this.edges.size();
    }


    // Knotenmenge
    public int numberOfVertexes() {
        return this.vertexes.size();
    }


    // Grad des Graphen
    // https://loeh.app.uni-regensburg.de/teaching/discmath_ws0910/graphentheorie_ueberblick.pdf
    public int degree() {
        return 2 * this.edges.size();
    }


    // Prüfung, ob Knoten im Graph
    public boolean hasVertex(MarkedVertex<T> n) {
        return this.vertexes.contains(n);
    }


    public boolean hasVertex(String s) {
        for (MarkedVertex<T> i: this.vertexes) {
            if (Objects.equals(i.getName(), s)) {
                return true;
            }
        }
        return false;
    }


    // Prüfung, ob Kante im Graph
    public boolean hasEdge(MarkedEdge<U, T> e) {
        return this.edges.contains(e);
    }


    public boolean hasEdge(String s) {
        for (MarkedEdge<U, T> i: this.edges) {
            if (Objects.equals(i.getName(), s)) {
                return true;
            }
        }
        return false;
    }


    // KNOTEN EIGENSCHAFTEN

    // Prüfung, ob Kante zwischen zwei Knoten
    // TODO schauen, ob es Aufgabe entspricht
    public boolean hasEdge(MarkedVertex<T> v1, MarkedVertex<T> v2) {
        for (MarkedEdge<U, T> i: this.edges) {
            if (i.getSource() == v1 && i.getDestination() == v2) {
                return true;
            } else if (i.getSource() == v2 && i.getDestination() == v1) {
                return true;
            }
        }
        return false;
    }


    public boolean hasEdge(String s1, String s2) throws NameDoesNotExistException {
        MarkedVertex<T> n1 = null;
        MarkedVertex<T> n2 = null;
        for (MarkedVertex<T> i: this.getAllVertexes()) {
            if (Objects.equals(i.getName(), s1)) {
                n1 = i;
            } else if (Objects.equals(i.getName(), s2)) {
                n2 = i;
            }
        }
        if (n1 == null || n2 == null) {
            throw new NameDoesNotExistException("One of the Vertexes might not exist");
        } else {
            return hasEdge(n1, n2);
        }
    }


    // Prüfung, ob zwei Knoten adjazent sind
    public boolean areAdjacent(MarkedVertex<T> n1, MarkedVertex<T> n2) {
        for (MarkedEdge<U, T> i: this.edges) {
            if ((i.getSource() == n1 && i.getDestination() == n2) || (i.getSource() == n2 && i.getDestination() == n1)) {
                return true;
            }
        }
        return false;
    }


    public boolean areAdjacent(String s1, String s2) throws NameDoesNotExistException {
        MarkedVertex<T> n1 = null;
        MarkedVertex<T> n2 = null;
        for (MarkedVertex<T> i: this.getAllVertexes()) {
            if (Objects.equals(i.getName(), s1)) {
                n1 = i;
            } else if (Objects.equals(i.getName(), s2)) {
                n2 = i;
            }
        }
        if (n1 == null || n2 == null) {
            throw new NameDoesNotExistException("One of the Vertexes might not exist");
        } else {
            return areAdjacent(n1, n2);
        }
    }


    // Prüfung, ob Knoten eine Schlinge besitzt
    public boolean hasLoop(MarkedVertex<T> n) {
        for (MarkedEdge<U, T> i: this.edges) {
            if (i.getSource() == i.getDestination() && i.getSource() == n) {
                return true;
            }
        }
        return false;
    }


    public boolean hasLoop(String s) throws NameDoesNotExistException{
        for (MarkedVertex<T> i: this.vertexes) {
            if (Objects.equals(i.getName(), s)) {
                return hasLoop(i);
            }
        }
        throw new NameDoesNotExistException("One of the Vertexes might not exist");
    }
}