Difference between revisions of "Retrieve Session information in Script (BIRT)"

Latest revision as of 17:50, 27 March 2010

< To: Report Developer Examples (BIRT)
This example is Bugzilla ID 182208. If you would like to contribute an example see the example contribution guidelines.

Introduction

This example illustrates retrieving data from session.

BIRT Version Compatibility

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Example Files

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Description

This example collects information from the session in the beforeFactory EventHandler using JavaScript. This information is loaded into a Map. The Map is then parsed in a Scripted Data Source and the results are displayed in the report.

Before Factory
// Create a hash table which will contain lists of other lists
var topMap = new Packages.java.util.Hashtable();

	
// Request Attributes
var request = reportContext.getHttpServletRequest();
var requestAttrMap = new Packages.java.util.Hashtable();
for (var attrNames = request.getAttributeNames(); attrNames.hasMoreElements(); ) {
      var aName = attrNames.nextElement();
      requestAttrMap.put(aName, request.getAttribute(aName).toString());
}
topMap.put("requestAttributes", requestAttrMap);
	
// Request Parameters
var requestParamMap = new Packages.java.util.Hashtable();
for (var paramIter = request.getParameterMap().entrySet().iterator();
     paramIter.hasNext(); ) {
      var entry = paramIter.next();
      requestParamMap.put(entry.getKey(), (entry.getValue()[0]));	
}
topMap.put("requestParameters",requestParamMap);

	
// Session Attributes
var sessionAttrMap = new Packages.java.util.Hashtable();
var session = request.getSession();
// Insert a variable on the session
session.setAttribute("ReportAttribute", "arbitrary value to pass to container");
var sessionAttrNames = session.getAttributeNames();
var i = 0;
while (sessionAttrNames.hasMoreElements()) {
      i ++;
      var aaa = sessionAttrNames.nextElement();
      sessionAttrMap.put(aaa, session.getAttribute(aaa));
} 
topMap.put("sessionAttributes", sessionAttrMap);	
	

// Get the system properties
topMap.put("systemProps", Packages.java.lang.System.getProperties());

// Store top map as a global
reportContext.setPersistentGlobalVariable("topMap", topMap);
	

Open Script for the Scripted Data Set
aMap = reportContext.getPersistentGlobalVariable("topMap");
topIter = aMap.entrySet().iterator();
if (topIter == null)
{
     topIterator = new Packages.java.util.Iterator();
     Packages.java.util.logging.Logger.getLogger("").info("OPEN NULL " );
}
innerIter = null;	

Fetch Script for the Scripted Data Set
while (!innerIter.hasNext()) 
{ // find an innerIter that has a new value
      if (innerIter == null || !innerIter.hasNext())
      { 	// no value in the inner iterator, get the next Hashtable out of the toHashtable
             if (topIter.hasNext())
             {	
                   outerObject = topIter.next(); 
                   innerIter = outerObject.getValue().entrySet().iterator();
             }
             else
             { // no more top hash tables. close things up
                   return false;
             }
      }
}

// we must have another innerIter
innerObject = innerIter.next();

row["propName"] = innerObject.getKey();
row["propValue"] = innerObject.getValue().toString();
row["propType"] = outerObject.getKey();
return true;

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