DataObjectPropertiesProvider.java

/*
 * XAdES4j - A Java library for generation and verification of XAdES signatures.
 * Copyright (C) 2010 Luis Goncalves.
 *
 * XAdES4j is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 3 of the License, or any later version.
 *
 * XAdES4j is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License along
 * with XAdES4j. If not, see <http://www.gnu.org/licenses/>.
 */
package xades4j.providers;

import xades4j.properties.DataObjectDesc;

/**
 * Represents a provider of data object properties. During the signature generation
 * the provider is invoked with every data object for which <b>no properties were
 * directly specified</b>.
 *
 * @see DataObjectDesc
 * @author Luís
 */
public interface DataObjectPropertiesProvider
{
    /**
     * Asks the provider to add properties to the given data object description.
     * @param dataObj the target data object description
     */
    public void provideProperties(DataObjectDesc dataObj);
}