1. Double-click the tFixedFlowInput component to open
   its Basic settings view on the Component tab.
   

2. Click the […] button next to Edit schema to open the Schema dialog box
   and define the data structure of the input data.
   

3. In this editor, click the [+] button three times to
   add three columns and name them id, name and age.
4. In the Type column, select Integer for id and age.
5. Click OK to close the editor, then click Yes to validate these changes and accept the propagation prompted
   by the dialog box that pops up.
6. Select Use Inline Content (delimited file) in the
   Mode area.
   In the Content field, enter the following customer
   data:
   1;Judy;27 2;Lily;45 3;Peter;59 4;John;30 5;Teddy;45

   1 2 3 4 5

   1;Judy;27 2;Lily;45 3;Peter;59 4;John;30 5;Teddy;45

1. Double-click the tSortRow to open its Basic settings view on the Component tab.

   

2. In the Criteria table, click the [+] button to add one row.
3. In the Schema column column, select the data column
   on which the sorting operation is based. In this example, select age as it is the ages that should be compared and counted.
4. In the sort num or alpha? column, select the type of
   sorting operation to perform. In this example, select num, which means numerical, as age contains
   integer data.
5. In the Order asc or desc? column, select desc to display data on the console in descending order.

1. Double-click the tMemorizeRows component to open its
   Basic settings view on the Component tab.

   

2. In the Row count to memorize field, type in the
   maximum number of rows to be memorized at any given time. As in this example you need to
   compare ages of two customers for each time, enter 2. This component
   memorizes two rows at maximum at any given moment and always indexes the new incoming row
   as 0 and the previous incoming row as 1.
3. In the Memorize column of the Columns to memorize table, select the check box(es) to determine the
   column(s) to be memorized. In this example, select the check box corresponding to
   age.

1. Double-click the tJavaFlex component to open its
   Basic settings view on the Component tab.

   

2. In the Start code area, enter the Java code that will
   be called during the initialization phase. In this example, type in int
count=0; in order to declare a variable count and assign the
   value 0 to it.
3. In the Main code area, enter the Java code to be
   applied to each row in the data flow. In this scenario, type
   in:if(!age_tMemorizeRows_1[0].equals(age_tMemorizeRows_1[1]))
{
count++;
}
System.out.println(age_tMemorizeRows_1[0]);This
   code compares two ages memorized by the tMemorizeRows
   component each time and counts one change every time the ages are found to be different.
   This code then displays the age that has been indexed as 0 by the tMemorizeRows component. When the tJavaFlex
   component is in the same flow of the tMemorizeRows
   component, the variable format is ColumnName_ComponentName[index].
4. In the End code area, enter the Java code that will
   be called during the closing phase. In this example, type in globalMap.put("number",
count); to initialize the global variable number with the value of the count
   variable.
5. Double-click the tJava component to open its
   Basic settings view on the Component tab.

   

6. In the Code area, enter the flollowing code to
   display the number of occurrences of different ages and the lowest age within the
   customers on the
   console:System.out.println("Different ages:
   "+globalMap.get("number"));

   System.out.println("Lowest age: " + ((Integer[])globalMap.get("tMemorizeRows_1_age"))[0]);
   

   The method globalMap.get() is used by the tJava to retrieve the array values. Note that here, the tJava is used outside the subJob tMemorizeRows so the variable format should be
   ComponentName_ColumnName, which is different from the variable format used
   by a component placed in the same flow.

In the console, you can read that there are four different ages and that the lowest age is
27 within the group of customers.