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From "Torsten Mielke (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AMQ-2287) ActiveMQMessage.setXXXProperty() method needs to check if property name is a valid Java identifier.
Date Fri, 12 Jun 2009 13:55:35 GMT

    [ https://issues.apache.org/activemq/browse/AMQ-2287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=52230#action_52230
] 

Torsten Mielke commented on AMQ-2287:
-------------------------------------

Could use the following helper method:

{code:java}
public boolean isJavaIdentifier() {
      int n = length();
      if (n==0) return false;
      if (!Character.isJavaIdentifierStart(charAt(0)))
          return false;
      for (int i = 1; i < n; i++)
          if (!Character.isJavaIdentifierPart(charAt(i)))
              return false;
      return true;
    }
{code}

> ActiveMQMessage.setXXXProperty() method needs to check if property name is a valid Java
identifier.
> ---------------------------------------------------------------------------------------------------
>
>                 Key: AMQ-2287
>                 URL: https://issues.apache.org/activemq/browse/AMQ-2287
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 5.2.0
>            Reporter: Torsten Mielke
>
> currently the AMQ implementation of javax.jms.Message.setXXXProperty() does not check
if the property name is a valid Java identifier. 
> This however is required according to the JMS spec.
> From http://java.sun.com/javaee/6/docs/api/javax/jms/Message.html:
> {quote}
> Property names must obey the rules for a message selector identifier. 
> ...
> Identifiers:
>     * An identifier is an unlimited-length sequence of letters and digits, the first
of which must be a letter. A letter is any character for which the method Character.isJavaLetter
returns true. This includes '_' and '$'. A letter or digit is any character for which the
method Character.isJavaLetterOrDigit returns true.
>     * Identifiers cannot be the names NULL, TRUE, and FALSE.
>     * Identifiers cannot be NOT, AND, OR, BETWEEN, LIKE, IN, IS, or ESCAPE.
>     * Identifiers are either header field references or property references. The type
of a property value in a message selector corresponds to the type used to set the property.
If a property that does not exist in a message is referenced, its value is NULL.
>     * The conversions that apply to the get methods for properties do not apply when
a property is used in a message selector expression. For example, suppose you set a property
as a string value, as in the following:
>       myMessage.setStringProperty("NumberOfOrders", "2");
>       The following expression in a message selector would evaluate to false, because
a string cannot be used in an arithmetic expression:
>       "NumberOfOrders > 1"
>     * Identifiers are case-sensitive.
>     * Message header field references are restricted to JMSDeliveryMode, JMSPriority,
JMSMessageID, JMSTimestamp, JMSCorrelationID, and JMSType. JMSMessageID, JMSCorrelationID,
and JMSType values may be null and if so are treated as a NULL value.
>     * Any name beginning with 'JMSX' is a JMS defined property name.
>     * Any name beginning with 'JMS_' is a provider-specific property name.
>     * Any name that does not begin with 'JMS' is an application-specific property name.

> {quote}
> Checks for this need to be added to all ActiveMQMessage.setXXXProperty() methods.

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