org.rhq.coregui.client.components.form.IsLongValidator
Validate if a string value is a valid Java long (an integer between -9,223,372,036,854,775,808 and 9,223,372,036,854,775,807), without actually converting it to a {@link Long}. Since this validator deals with longs, not ints, it should be used in conjunction with a {@link com.smartgwt.client.widgets.form.fields.TextItem}, not a {@link com.smartgwt.client.widgets.form.fields.IntegerItem}.
@author Ian Springer