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DestinationName.java
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DestinationName.java
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/*
* Copyright (c) 2000, 2017 Oracle and/or its affiliates. All rights reserved.
* Copyright 2021, 2022 Contributors to the Eclipse Foundation
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.messaging.jmq;
/**
* <code>DestinationName</code> encapsulates the validation of the JMQ provider specific syntax for Destination Names.
*/
public class DestinationName {
/* No public constructor needed */
private DestinationName() {
}
/**
* Internal destination name prefix
*
* @since 3.5
*/
public static final String INTERNAL_DEST_PREFIX = "mq.";
/**
* Validates whether a name conforms to the JMQ provider specific syntax for Destination Names.
*
* @param name The name to be validated.
*
* @return <code>true</code> if the name is valid; <code>false</code> if the name is invalid.
*/
public static boolean isSyntaxValid(String name) {
// Invalid if name is null or empty.
if (name == null || "".equals(name)) {
return false;
}
if (isInternal(name)) {
/*
* // remove .'s for validation StringBuffer tmp = new StringBuffer(name); for (int i=0; i < tmp.length(); i ++) { if
* (tmp.charAt(i) == '.') { tmp.setCharAt(i, '_'); } } name = tmp.toString();
*/
/*
* Relax syntax checking if name starts with "mq." This is to allow temporary destinations to be monitored. The previous
* syntax checking was preventing destination names such as the following from being created:
* mq.metrics.destination.queue.temporary_destination://queue/192.18.116.222/48422/1
*/
return (true);
}
// Verify identifier start character and part
char[] namechars = name.toCharArray();
if (Character.isJavaIdentifierStart(namechars[0]) || (namechars[0] == '*' || namechars[0] == '>')) {
for (int i = 1; i < namechars.length; i++) {
if (namechars[i] == '.') { // valid for wildcards
} else if (namechars[i] == '*') { // valid for wildcards
} else if (namechars[i] == '>') { // valid for whildcards
} else if (!Character.isJavaIdentifierPart(namechars[i])) {
// Invalid if body characters are not valid using isJavaIdentifierPart().
return false;
}
}
} else {
// Invalid if first character is not valid using isJavaIdentifierStart().
return false;
}
return true;
}
/**
* @since 3.5
*/
public static boolean isInternal(String destName) {
if ((destName != null) && destName.startsWith(INTERNAL_DEST_PREFIX)) {
return (true);
}
return (false);
}
}