/// <summary>Advance to the next key, value pair, returning null if at end.</summary>
/// <returns>the key object that was read into, or null if no more</returns>
/// <exception cref="System.IO.IOException"/>
/// <exception cref="System.Exception"/>
public override bool NextKeyValue()
{
if (inputQueue != null)
{
return(ReadFromQueue());
}
else
{
if (inputContext.NextKeyValue())
{
this.key = inputContext.GetCurrentKey();
this.value = inputContext.GetCurrentValue();
return(true);
}
else
{
return(false);
}
}
}