com.datastax.insight.core.dag.DAG Maven / Gradle / Ivy

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package com.datastax.insight.core.dag;

import org.codehaus.jackson.map.annotate.JsonSerialize;

import java.util.ArrayList;
import java.util.List;
import java.util.Optional;

@JsonSerialize(include= JsonSerialize.Inclusion.NON_NULL)
public class DAG {
    private long id;
    private String name;
    private List vertices=new ArrayList<>();
    private List edges=new ArrayList<>();

    public final static String START_VERTEX="start";
    public final static String END_VERTEX="end";

    public String getName() {
        return name;
    }

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

    public List getVertices() {
        return vertices;
    }

    public void setVertices(List vertices) {
        this.vertices = vertices;
    }

    public List getEdges() {
        return edges;
    }

    public void setEdges(List edges) {
        this.edges = edges;
    }

    public Vertex getVById(long id){
        for(Vertex v : vertices){
            if(v.getId()==id) return v;
        }
        return null;
    }

    public Vertex getVByName(String name){
        for(Vertex v : vertices){
            if(v.getType().equals(name)) return v;
        }
        return null;
    }

    public List next(long id){
        List vertexList=new ArrayList<>();
        for(Edge e : edges){
            Long source = e.getSource() == null ? e.getStart() : e.getSource();
            if(source.equals(id)){
                Long target = e.getTarget() == null ? e.getEnd() : e.getTarget();
                Vertex v=getVById(target);
                vertexList.add(v);
            }
        }
        return vertexList;
    }

    public List prev(long id){
        List vertexList=new ArrayList<>();
        for(Edge e : edges){
            Long target = e.getTarget() == null ? e.getEnd() : e.getTarget();
            if(target.equals(id)){
                Long source = e.getSource() == null ? e.getStart() : e.getSource();
                Vertex v=getVById(source);
                vertexList.add(v);
            }
        }
        return vertexList;
    }

    public void addVertex(Vertex vertex){
        if(!containsVertex(vertex)){
            vertices.add(vertex);
        }
    }

    public boolean containsVertex(Vertex vertex){
        boolean flag=false;
        for(Vertex v : vertices){
            if(v.getId()==vertex.getId()) flag=true;
        }
        return flag;
    }

    public void addEdge(Edge edge){
        if(!containsEdge(edge)){
            edges.add(edge);
        }
    }

    public boolean containsEdge(Edge edge){

        boolean flag=false;

        for(Edge e : edges){

            Long sourceL = e.getSource() == null ? e.getStart() : e.getSource();
            Long sourceR = edge.getSource() == null ? edge.getStart() : edge.getSource();
            Long targetL = e.getTarget() == null ? e.getEnd() : e.getTarget();
            Long targetR = edge.getTarget() == null ? edge.getEnd() : edge.getTarget();

            if (sourceL.equals(sourceR) &&
                    targetL.equals(targetR) &&
                    e.getShape().equals(edge.getShape())) {
                flag = true;
            }
        }

        return flag;
    }

    public Optional findEdge(long start, long end) {
        return this.edges.stream().filter(edge -> edge.getStart() == start && edge.getEnd() == end).findAny();
    }

    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }
}