ajjain

	/**
	 * reads the data from the composite column family. 
	 * 
	 * @param rowKey unique key which identifies a row in cassandra column family.
	 * @param columnFamilyName represents the column family which contains the data to be looked up.
	 * @param startValue range query start parameter
	 * @param endValue range query end parameter
	 * @param compositeColumnSerializer represents mapping from column name to {@link Serializer} 
	 * @param startComparator holds the comparator value to start the range query
	 * @param endComparator holds the comparator value to end the range query

ajjain

var http = require('http');
/*
- Make sure you have downloaded node-cassandra-client and related dependencies and made it available 
- at the suitable place.
*/
var cassandraClient = require('./node-cassandra-client.js');
var hosts = ['host1:port1','host2:port2','host3:port3'];
var connection_pool = new cassandraClient.PooledConnection({'hosts': hosts, 'keyspace': 'keyspacename'});

http.createServer(

ajjain

public interface IPenFactory {
	IPen getInstance(String type);
}

ajjain

package learn.scala

object LearnSyntaxSheet {
  println("Welcome to the Scala worksheet")       //> Welcome to the Scala worksheet
  var x = 1                                       //> x  : Int = 1
  def incr(counter: Int) = counter + 1            //> incr: (counter: Int)Int
  incr(100)                                       //> res0: Int = 101

  //================================================================================
  // 11/07/2013

ajjain

package learn.scala

object Exercise {
  println("Welcome to the Exercises")             //> Welcome to the Exercises
  
  // EXERCISE 1:
  // Write a product function that calculate product of values of a function for the points
  // on a given interval
  
  def prod(f: Int=>Int, a: Int, b: Int): Int =  {

ajjain

package learn.scala

object Exercise {
	// Exercise on implementing Higher order functions in Scala.
	// All these examples are taken from Martin Odersky teachings on coursera.

  // EXERCISE 1:
  // Write a product function that calculate product of values of a function for the points
  // on a given interval

ajjain

package learn.scala

/**
	* Datastructures in Scala
	* The example below shows abstracting Rational numbers and implementing
	* rational number arithmetics.
	*
	* Similar to java scala does provide toString for printing the datastructure representation.
	* In the example below we override toString method. Also, we make use of this construct which
	* is also available in Scala.

ajjain

public class ConfigurationService {
	/** 
	 * The process engine configuration impl. 
	 **/
	private ProcessEngineConfigurationImpl processEngineConfigurationImpl;
	/**
	 * The Custom vars. 
	 */
	private List<CustomVariableType> CustomVars;
	/**

ajjain

	package learn.scala

/**
 * Herein we'll discuss class hierarchies in Scala.
 * The first concept in this is about Abstract classes. This is very similar to how it is in Java.
 * Next we discuss about the persistent data structures and creation of binary search tree.
 */
object ClassHierarchy {
  println("Welcome to the Scala worksheet")       //> Welcome to the Scala worksheet
  val node = new NonEmpty(4, new Empty, new Empty)//> node  : learn.scala.NonEmpty = {.4.}

ajjain

package learn.scala

object OperatorOverloading {
  println("Welcome to the Scala worksheet")       //> Welcome to the Scala worksheet

  /**
   * We wish to use operators for rational number.
   * Example: r1 < r2 instead of using r1.less(r2)
   * This can be acheived in scala by understanding below two properties
   * a) Infix methods Notation