InvalidPropertyException.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.verification;

/**
 * Base for exceptions thrown during the validation of qualifying properties.
 * @author Luís
 */
public abstract class InvalidPropertyException extends InvalidSignatureException
{
    private String message;

    protected InvalidPropertyException()
    {
        message = null;
    }

    protected InvalidPropertyException(Throwable cause)
    {
        super(cause);
        message = null;
    }

    @Override
    public String getMessage()
    {
        if (null == message)
        {
            message = String.format("Verification failed for property '%s': %s", getPropertyName(), getVerificationMessage());
        }
        return message;
    }

    protected abstract String getVerificationMessage();

    public abstract String getPropertyName();
}