Result.java

package com.loadimpact.resource.testresult;

import com.loadimpact.util.DateUtils;

import javax.json.JsonNumber;
import javax.json.JsonObject;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Date;

/**
 * Base class for all result types.
 *
 * @author jens
 */
public abstract class Result {
    public static final String PREFIX = "__li_";
    public final Date timestamp;
    public final int  offset;

    protected Result(JsonObject json) {
        this.offset = json.getInt("offset", 0);

        JsonNumber n = json.getJsonNumber("timestamp");
        this.timestamp = (n != null) ? DateUtils.toDateFromTimestamp(n.longValue()) : null;
    }

    protected double getDouble(JsonObject json, String name, double defaultValue) {
        try {
            JsonNumber number = json.getJsonNumber(name);
            if (number != null) return number.doubleValue();
        } catch (Exception ignore) { }
        return defaultValue;
    }

    protected URL getUrl(JsonObject json, String name) {
        try {
            String url = json.getString(name);
            if (url != null) return new URL(url);
        } catch (MalformedURLException ignore) { }
        return null;
    }

    protected StringBuilder toString(StringBuilder buf) {
        return buf.append("timestamp=").append(DateUtils.toIso8601(timestamp)).append(", ")
                  .append("offset=").append(offset);
    }

    @Override
    public String toString() {
        return this.getClass().getSimpleName() + "{" + toString(new StringBuilder()) + '}';
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof Result)) return false;

        Result result = (Result) o;

        if (offset != result.offset) return false;
        if (timestamp != null ? !timestamp.equals(result.timestamp) : result.timestamp != null) return false;

        return true;
    }

    @Override
    public int hashCode() {
        int result = timestamp != null ? timestamp.hashCode() : 0;
        result = 31 * result + offset;
        return result;
    }
}