Hi Paul, On Thu, Mar 17, 2011 at 12:37 AM, Paul Fremantle <[email protected]> wrote:
> Senaka > > Can't we have our own "Carbon" JNDI which is just used within Carbon? I > don't see why we need to have a single JNDI that spans across both. > There were two reasons. 1. According to older discussions with Azeez et al, JNDI spanning across both webapps and carbon, is useful for having shared datasources, and its required for having a single-LDAP. Use of JNDI is so broad, to locally solve the problems WRT JMS. 2. By design, JNDI can be taken control of only by getting hold of the InitialContextFactoryBuilder in the NamingManager. There can only be one instance of these. Therefore, eventhough we isolate, Carbon-JNDI from webapp-JNDI, we will still need to have the classes on a single classpath to avoid classloader constraints. So, we don't have an option when it comes to placing libraries, AFAIU. Thanks, Senaka. > > Paul > > > On 16 March 2011 18:46, Senaka Fernando <[email protected]> wrote: > >> >> >> On Wed, Mar 16, 2011 at 4:18 PM, Danushka Menikkumbura <[email protected] >> > wrote: >> >>> Hi, >>> >>> The requirement is to install the Qpid (client) feature and configure JMS >>> transport as usual to work with the MB. The issue here is that if you >>> install it as a feature the libs get install into >>> repository/components/plugin so that classes will not be visible to the >>> CarbonContext. >>> >>> Senaka, do we have a fix for this?. It is not an issue anymore?. >>> >> >> As discussed today, we cannot install this into plugins, and must install >> it into the webapp classpath. The reason is that JMS is based on JNDI, and >> JNDI is a top-level concept spanning across OSGi and non-OSGi (webapps) >> portions of the Carbon platform. Due to this reason, in order to avoid >> class-loading issues, we need to copy the libs into the carbon webapp's >> classpath. Unless we follow this approach, we cannot achieve proper MT in >> the JNDI/JMS layers. >> >> Now, having said that, I believe that it is possible to write features >> that will install jars into the webapp classpath. Also, not all of the jars >> required by the MB component need to be on the webapp classpath, and it will >> be only those that provide APIs, or ones containing classes that will be >> dynamically loaded. >> >> HTH. >> >> Thanks, >> Senaka. >> >>> >>> Thanks, >>> Danushka >>> >>> _______________________________________________ >>> Carbon-dev mailing list >>> [email protected] >>> http://mail.wso2.org/cgi-bin/mailman/listinfo/carbon-dev >>> >>> >> >> >> -- >> *Senaka Fernando* >> Product Manager - WSO2 Governance Registry; >> Associate Technical Lead; WSO2, Inc.; http://wso2.com* >> Member; Apache Software Foundation; http://apache.org >> >> E-mail: senaka AT wso2.com >> **P: <%2B1%20408%20754%207388> <%2B1%20408%20754%207388>+1 408 754 7388; >> ext: 51736*; *M: <%2B94%2077%20322%201818> <%2B94%2077%20322%201818>+94 >> 77 322 1818 >> Linked-In: http://www.linkedin.com/in/senakafernando >> >> *Lean . Enterprise . Middleware >> >> >> _______________________________________________ >> Carbon-dev mailing list >> [email protected] >> http://mail.wso2.org/cgi-bin/mailman/listinfo/carbon-dev >> >> > > > -- > Paul Fremantle > CTO and Co-Founder, WSO2 > OASIS WS-RX TC Co-chair, VP, Apache Synapse > > Office: <%2B44%20844%20484%208143> <%2B44%20844%20484%208143>+44 844 484 > 8143 > Cell: <%2B44%20798%20447%204618> <%2B44%20798%20447%204618>+44 798 447 > 4618 > > blog: http://pzf.fremantle.org > twitter.com/pzfreo > [email protected] > > wso2.com Lean Enterprise Middleware > > Disclaimer: This communication may contain privileged or other confidential > information and is intended exclusively for the addressee/s. If you are not > the intended recipient/s, or believe that you may have received this > communication in error, please reply to the sender indicating that fact and > delete the copy you received and in addition, you should not print, copy, > retransmit, disseminate, or otherwise use the information contained in this > communication. Internet communications cannot be guaranteed to be timely, > secure, error or virus-free. The sender does not accept liability for any > errors or omissions. > -- *Senaka Fernando* Product Manager - WSO2 Governance Registry; Associate Technical Lead; WSO2, Inc.; http://wso2.com* Member; Apache Software Foundation; http://apache.org E-mail: senaka AT wso2.com **P: <%2B1%20408%20754%207388>+1 408 754 7388; ext: 51736*; *M: <%2B94%2077%20322%201818>+94 77 322 1818 Linked-In: http://www.linkedin.com/in/senakafernando *Lean . Enterprise . Middleware
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