Bug 175791 An unnecessary (?) warning occurs at session creation
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/StructPropertyType.java
STRUCT_TYPE );
	}
	/**
	 * Converts the structure list property type into an integer. If value is
	 * null, return 0, else return the size of the list value.
	 * 
	 * @return the integer value of the structure list property type.
	 */
	public int toInteger( Module module, Object value )
	{
		
		if ( value == null )
			return 0;
		if ( value instanceof ArrayList )
			return ( (ArrayList) value ).size( );
		return 1;
	}
	/**
	 * Can not convert a list property type to a string. This method will always
	 * return null.
	 * 
	 */
	public String toString( Module module, PropertyDefn defn, Object value )
	{
		if ( value == null )
			return null;
		return value.toString( );
	}
}