org.apache.mina.integration.beans.InetAddressEditor Maven / Gradle / Ivy

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/**
 * Copyright 2007-2016, Kaazing Corporation. All rights reserved.
 *
 * 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.apache.mina.integration.beans;

import java.beans.PropertyEditor;
import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * A {@link PropertyEditor} which converts a {@link String} into an
 * {@link InetAddress}.
 * This editor simply calls {@link InetAddress#getByName(java.lang.String)}
 * when converting from a {@link String}, and {@link InetAddress#getHostAddress()}
 * when converting to a {@link String}.
 *
 * @author Apache MINA Project
 *
 * @see java.net.InetAddress
 */
public class InetAddressEditor extends AbstractPropertyEditor {
    @Override
    protected String toText(Object value) {
        String hostname = ((InetAddress) value).getHostAddress();
        if (hostname.equals("0:0:0:0:0:0:0:0") || hostname.equals("0.0.0.0") ||
                hostname.equals("00:00:00:00:00:00:00:00")) {
            hostname = "*";
        }
        return hostname;
    }

    @Override
    protected Object toValue(String text) throws IllegalArgumentException {
        if (text.length() == 0 || text.equals("*")) {
            return defaultValue();
        }

        try {
            return InetAddress.getByName(text);
        } catch (UnknownHostException uhe) {
            IllegalArgumentException iae = new IllegalArgumentException();
            iae.initCause(uhe);
            throw iae;
        }
    }

    @Override
    protected String defaultText() {
        return "*";
    }

    @Override
    protected Object defaultValue() {
        try {
            return InetAddress.getByName("0.0.0.0");
        } catch (UnknownHostException e) {
            throw new InternalError();
        }
    }
}