SignalParameters.java

package com.socialtext;

class SignalParameters
{
    public enum Fields
    {
        kBefore,
        kAfter,
        kLimit,
        kOrder,
        kDirect;
    }

    private int bitVector = 0;

    private Date fBefore;
    private Date fAfter;
    private int fLimit;
    private String fOrder;
    private boolean fSent;
    private boolean fReceived;

    public void setBefore(Date before)
    {
        fBefore = before;
        bitVector |= (1 << Fields.kBefore.ordinal());
    }

    public void setAfter(Date after)
    {
        fAfter = after;
        bitVector |= (1 << Fields.kAfter.ordinal());
    }

    public int getFields()
    {
        return bitVector;
    }

    public Date getBefore()
    {
        return fBefore;
    }
}

/* Used like this: */
getSignals(SignalParameters params)
{
    String url = "";

    int fields = params.getFields();
    if (fields & SignalParameters.Fields.kBefore.ordinal() != 0)
    {
        url += "before=" + DateFormatter(params.getBefore());
    }
    
}