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Utility classes that are used in the count-db project and other bow-* projects

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package be.bagofwords.application.status.perf;

import be.bagofwords.util.HashUtils;

public class Trace {

    private String line;
    private Trace parent;

    public Trace(String line, Trace parent) {
        this.line = line;
        this.parent = parent;
    }

    public String getLine() {
        return line;
    }

    public Trace getParent() {
        return parent;
    }

    public boolean equals(Object other) {
        if (other instanceof Trace) {
            Trace otherTrace = (Trace) other;
            return line.equals(otherTrace.getLine()) && (parent == otherTrace.getParent() || (parent != null && parent.equals(otherTrace.getParent())));
        } else {
            return false;
        }
    }

    public int hashCode() {
        int hash = line.hashCode();
        if (parent != null) {
            return hash * HashUtils.addHash + parent.hashCode();
        } else {
            return hash;
        }
    }

    //Serialization

    public Trace() {
    }

    public void setLine(String line) {
        this.line = line;
    }

    public void setParent(Trace parent) {
        this.parent = parent;
    }

}