Example usage for java.util.stream Node toString

Introduction

In this page you can find the example usage for java.util.stream Node toString.

Prototype

public String toString() 

Source Link

Document

Returns a string representation of the object.

Usage

From source file:delfos.rs.trustbased.WeightedGraph.java

public TextTable getTextTable(Set<Node> nodes) {
    validateParameters(nodes);//  www.j  a  v a2 s  . co m

    List<String> columnNames = new ArrayList<>();
    columnNames.add("node\\node");
    final List<Node> sortedNodes = this.allNodes().stream().sorted().filter(node -> nodes.contains(node))
            .collect(Collectors.toList());
    Object[][] data = new Object[sortedNodes.size()][sortedNodes.size() + 1];
    columnNames.addAll(sortedNodes.stream().map(node -> node.toString() + " ").collect(Collectors.toList()));
    for (int node1index = 0; node1index < sortedNodes.size(); node1index++) {
        Node node1 = sortedNodes.get(node1index);
        int row = node1index;

        data[row][0] = node1.toString();

        for (int node2index = 0; node2index < sortedNodes.size(); node2index++) {
            Node node2 = sortedNodes.get(node2index);
            int column = node2index + 1;

            String cellValue = getEdge(node1, node2).map(edge -> edge.weight()).filter(weight -> weight > 0)
                    .map(weight -> DECIMAL_FORMAT.format(weight)).orElse("0");
            data[row][column] = cellValue + " ";
        }
    }
    TextTable textTable = new TextTable(columnNames.toArray(new String[0]), data);
    return textTable;
}

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From source file:delfos.rs.trustbased.WeightedGraph.java

public TextTable getPairwiseDistancesTable(Collection<Node> nodes) {

    initFloydWarshall();/*from ww  w  .  j  av  a 2 s  . c  o  m*/
    validateParameters(nodes);

    List<String> columnNames = new ArrayList<>();
    columnNames.add("node\\node");
    final List<Node> sortedNodes = this.allNodes().stream().sorted().filter(node -> nodes.contains(node))
            .collect(Collectors.toList());
    Object[][] data = new Object[sortedNodes.size()][sortedNodes.size() + 1];
    columnNames.addAll(sortedNodes.stream().map(node -> node.toString()).collect(Collectors.toList()));
    for (int node1index = 0; node1index < sortedNodes.size(); node1index++) {
        Node node1 = sortedNodes.get(node1index);
        int row = node1index;

        data[row][0] = node1.toString();

        for (int node2index = 0; node2index < sortedNodes.size(); node2index++) {
            Node node2 = sortedNodes.get(node2index);
            int column = node2index + 1;

            double dist = floydWarshall.dist(node1index, node2index);
            String cellValue = DECIMAL_FORMAT.format(dist) + " ";
            data[row][column] = cellValue;
        }
    }

    TextTable textTable = new TextTable(columnNames.toArray(new String[0]), data);
    return textTable;
}

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