Operators and Icons › Operators › Java and External JARs › Using a JavaObject

Using a JavaObject

Java objects are saved after a Run Java Code operator has completed in a JavaObject data type. You can use a JavaObject dataset variable in the following ways:

• Pass the JavaObject dataset variable in the parameters list of the Run Java Code operator.
• Pass the path of the JavaObject dataset variable in a string variable from an Interaction Request Form or Start Request Form. For example:

  JavaObjectPath = Datasets["/GlobalDatasets"].acct
  

  Then, you can use the eval function when passing the JavaObjectPath variable to the parameters list of the Run Java Code operator. For example:

  eval(Process.IRF.JavaObjectPath)
  

• Copy a JavaObject in Javascript. You can also assign one JavaObject to another.

  Note: Do not modify the actual value of a CA Process Automation JavaObject (the serialized string of the original Java object). Your changes could prevent the Run Java Code operator from loading the JavaObject.

Observe the following constraints when working in JavaScript:

• Similar to passwords, you cannot concatenate a JavaObject to a string.
• You cannot load a JavaObject and use its methods in JavaScript. Instead, pass the JavaObject in the Run Java Code operator parameters list and access it in the operator Java code.

The Java code that you write can consist of normal Java statements and expressions. You can also define your own methods and use them inside the code. For example:

// Import the classes that you want to use
import ca.tech.pam.MyAccount;
// Note: no need to import StringBuffer and Date because they are part of the 
// automatically imported packages
// import java.lang.StringBuffer;
// import java.util.Date;
// Note: the jar that contains the ca.tech.pam.MyAccount class 
// must be in the list of External Jars of the operator or the module;
// but java lang and java util are in rt.jar, which is automatically put in the classpath

MyAccount acct = new MyAccount(1000.00);

// Use the public methods of the MyAccount object
acct.addFunds(34.44);
acct.subFunds(10);

// Define your own method
String getStatement(MyAccount acc) {
    StringBuffer strBuff = new StringBuffer("Account Balance: " + acc.getBalance());
    Date dt = new Date(System.currentTimeMillis());
    strBuff.append(" on date: " + dt);
    return strBuff.toString();
}
// Use the method you defined
// also print the statement using the 'logger' object that you 
// setup in the 'Logger' page of the operator 
logger.info(getStatement(acct));

After you run this Java code, the log message shows the account balance, the date, and the time:

Account Balance: 124.44 on date: Wed Jul 13 12:53:37 EDT 2011