Application: gvSIG desktop » Library: org.gvsig.tools

import java.util.Collection;

import java.util.Map;

    public static boolean isEmpty(IsEmpty o) {

        return o==null || o.isEmpty();

    }

    public static boolean isEmpty(Object o) {

        if( o == null ) {

            return true;

        }

        if( o instanceof IsEmpty ) {

            return ((IsEmpty)o).isEmpty();

        }

        if( o instanceof Collection ) {

            return ((Collection)o).isEmpty();

        }

        if( o instanceof Map ) {

            return ((Map)o).isEmpty();

        }

        if( o instanceof String ) {

            return ((String)o).isEmpty();

        }

        if( o instanceof CharSequence ) {

            return ((CharSequence)o).length()==0;

        }

        throw new IllegalArgumentException("Object type not supported ("+o.getClass().getName()+").");

    }