Difference between revisions of "DIS-HLS-Client"

Revision as of 15:04, 19 March 2007

Introduction

The DISHLSClient is a library that allows to execute query into DIS-IC.

Implentation Overview

The DISHLSClient is a static class that allow to instance a Manager for each DILIGENT resource. Using Credentials or service EPR it'is possible to instantiate the rigth Manager to use in the scope of a particular VO. The DISHLSClient allow to process a not predefined query using the method queryDISIC implemented in the GeneralQueryManager.

Usage Examples

ExtendedGSSCredential cred=null;
try {
       cred = ProxyUtil.loadProxyCredentials("certWithDLRoles");
} catch (IOException e) {
	e.printStackTrace();
} catch (GSSException e) {
	e.printStackTrace();
}
RunningInstanceManager riManager=null;
PropertiesManager pMan =null;
try {
	//null credential and null EPR
	riManager=DISHLSClient.getRunningInstanceManager(null, null);
        pMan= DISHLSClient.getPropertiesManager(cred, null);
} catch (DISHLSClientException e) {
       e.printStackTrace();
}
String test= null;
try {
       riManager.getEPRsRIFromClassAndName("InformationSystem", "DIS-Registry", "dililigentproject/informationservice/disregistry/DISRegistryFactoryService", null,null);
       test= pMan.getAllPublishedEntries(cred, null);
} catch (DISHLSClientException e) {
       e.printStackTrace();
} catch (DISHLSCredentialException e) {
       //community changed
       e.printStackTrace();
} 

How to adapt the existing xQuery to eXist 1.1

In the following examples are shown the necessary modifications to xQueries in order to make them compatible with eXist 1.1

• the function text() is not supported:

  .../DILIGENTResource/UniqueID/text() eq 'id' ==> .../DILIGENTResource/UniqueID/string() eq 'id'
  

• to keep an attribute value it must use the function string()

  .../Endpoint[@EntryName="*ENTRYNAME*"]  ==>  ../Endpoint[string(@EntryName) eq "*ENTRYNAME*"] 
 

--Andrea 14:08, 19 March 2007 (EET)