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A Java API to generate highchart json on the server side.

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package nl.pvanassen.geckoboard.api.widget;

import nl.pvanassen.geckoboard.api.Push;
import nl.pvanassen.geckoboard.api.error.ValidationException;
import nl.pvanassen.geckoboard.api.json.common.GraphType;
import nl.pvanassen.geckoboard.api.json.common.TextStrValueItem;
import nl.pvanassen.geckoboard.api.json.common.TextStrValuePrefixItem;

import com.google.gson.annotations.SerializedName;

public class NumberAndSecondaryStat extends Push {

    @SerializedName("item")
    private final TextStrValueItem[] items = new TextStrValueItem[2];

    @SuppressWarnings("unused")
    private final boolean absolute;

    @SerializedName("type")
    private final GraphType graphType;

    public NumberAndSecondaryStat(String widgetKey, boolean absolute, GraphType graphType) {
        super(widgetKey);
        this.absolute = absolute;
        this.graphType = graphType;
    }

    public void setPrimary(String primary, String prefix) {
        items[0] = new TextStrValuePrefixItem("", primary, prefix);
    }

    public void setSecondary(String secondary) {
        items[1] = new TextStrValueItem("", secondary);
    }

    @Override
    protected void validate() throws ValidationException {
        if (items[0] != null) {
            throw new ValidationException("primary", "Cannot be empty");
        }
        if (graphType == null) {
            throw new ValidationException("graphType", "Cannot be null");
        }
    }

}