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Library to connect to Cisco Enterprise Chat and Email (ECE) chat interface which is a modified version of XMPP over BOSH standard.

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/*
 * Copyright 2009 Mike Cumings
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.igniterealtime.jbosh;

/**
 * Data type representing the getValue of the {@code ack} attribute of the
 * {@code bosh} element.
 */
final class AttrAck extends AbstractAttr {

    /**
     * Creates a new attribute object.
     *
     * @param val attribute getValue
     * @throws BOSHException on parse or validation failure
     */
    private AttrAck(final String val) throws BOSHException {
        super(val);
    }

    /**
     * Creates a new attribute instance from the provided String.
     *
     * @param str string representation of the attribute
     * @return attribute instance or {@code null} if provided string is
     * {@code null}
     * @throws BOSHException on parse or validation failure
     */
    static AttrAck createFromString(final String str)
            throws BOSHException {
        if (str == null) {
            return null;
        } else {
            return new AttrAck(str);
        }
    }

}