function setConstraints(oType, oConstraints) {
		var vNullable;

		oType.oConstraints = undefined;
		if (oConstraints) {
			vNullable = oConstraints.nullable;
			if (vNullable === false || vNullable === "false") {
				oType.oConstraints = {nullable : false};
			} else if (vNullable !== undefined && vNullable !== true && vNullable !== "true") {
				Log.warning("Illegal nullable: " + vNullable, null, oType.getName());
			}
		}

		oType._handleLocalizationChange();
	}
Sets the constraints.

@param {sap.ui.model.odata.type.Double} oType
  the type instance
@param {object} [oConstraints]
  constraints, see {@link #constructor}