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/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.activemq;

import java.util.Enumeration;
import java.util.Vector;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.jms.ConnectionMetaData;

/**
 * A ConnectionMetaData object provides information describing
 * the Connection object.
 */

public final class ActiveMQConnectionMetaData implements ConnectionMetaData {

    public static final String PROVIDER_VERSION;
    public static final int PROVIDER_MAJOR_VERSION;
    public static final int PROVIDER_MINOR_VERSION;

    public static final ActiveMQConnectionMetaData INSTANCE = new ActiveMQConnectionMetaData();

    static {
        String version = null;
        int major = 0;
        int minor = 0;
        try {
            Package p = Package.getPackage("org.apache.activemq");
            if (p != null) {
                version = p.getImplementationVersion();
                Pattern pattern = Pattern.compile("(\\d+)\\.(\\d+).*");
                Matcher m = pattern.matcher(version);
                if (m.matches()) {
                    major = Integer.parseInt(m.group(1));
                    minor = Integer.parseInt(m.group(2));
                }
            }
        } catch (Throwable e) {
        }
        PROVIDER_VERSION = version;
        PROVIDER_MAJOR_VERSION = major;
        PROVIDER_MINOR_VERSION = minor;
    }

    private ActiveMQConnectionMetaData() {
    }

    /**
     * Gets the JMS API version.
     * 
     * @return the JMS API version
     */

    public String getJMSVersion() {
        return "1.1";
    }

    /**
     * Gets the JMS major version number.
     * 
     * @return the JMS API major version number
     */

    public int getJMSMajorVersion() {
        return 1;
    }

    /**
     * Gets the JMS minor version number.
     * 
     * @return the JMS API minor version number
     */

    public int getJMSMinorVersion() {
        return 1;
    }

    /**
     * Gets the JMS provider name.
     * 
     * @return the JMS provider name
     */

    public String getJMSProviderName() {
        return "ActiveMQ";
    }

    /**
     * Gets the JMS provider version.
     * 
     * @return the JMS provider version
     */

    public String getProviderVersion() {
        return PROVIDER_VERSION;
    }

    /**
     * Gets the JMS provider major version number.
     * 
     * @return the JMS provider major version number
     */

    public int getProviderMajorVersion() {
        return PROVIDER_MAJOR_VERSION;
    }

    /**
     * Gets the JMS provider minor version number.
     * 
     * @return the JMS provider minor version number
     */

    public int getProviderMinorVersion() {
        return PROVIDER_MINOR_VERSION;
    }

    /**
     * Gets an enumeration of the JMSX property names.
     * 
     * @return an Enumeration of JMSX property names
     */

    public Enumeration getJMSXPropertyNames() {
        Vector jmxProperties = new Vector();
        jmxProperties.add("JMSXGroupID");
        jmxProperties.add("JMSXGroupSeq");
        jmxProperties.add("JMSXDeliveryCount");
        jmxProperties.add("JMSXProducerTXID");
        return jmxProperties.elements();
    }
}




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