JavaSetObject Function

Action

Sets an object parameter for the next function or constructor call.

Note: Parameters must exactly match the method signature and they must be in order. Use the third optional parameter to specify the formal data type of the parameter.

Include file

Java.bdh

Syntax

JavaSetObject( in hObject : number,
               in hParam  : number,
               in sType   : string optional );

Parameter	Description
hObject	Valid handle to a java object or `JAVA_STATIC_METHOD`.
hParam	The object handle to be set as parameter.
sType	(Optional) The object will be treated as being of the type specified here for next method or constructor call. Syntax for the class signature must be `package/subpackage/classname`. Example: `java/lang/String`

Parameter

Description

hObject

Valid handle to a java object or JAVA_STATIC_METHOD.

hParam

The object handle to be set as parameter.

sType

(Optional) The object will be treated as being of the type specified here for next method or constructor call. Syntax for the class signature must be package/subpackage/classname.

Example: java/lang/String

Example

dcltrans
  transaction TInit
  begin
    // Load and start the JVM.
    JavaCreateJavaVM();

  end TInit;

  transaction TPureBdl
  var hJTable    : number;
      hJKeyStr   : number;
      hJValueStr : number;
      hJRetVal   : number;
      sBuffer    : string;
  begin
    // prepare the key/value pair
    // String jKeyStr = "hello";
    // String jValueStr = "world";
    hJKeyStr := JavaLoadString("hello");
    hJValueStr := JavaLoadString("world");

    // instantiate a Hashtable
    // Hashtable jTable = new Hashtable();
    hJTable := JavaLoadObject("java/util/Hashtable");

    // insert an Object into the Hashtable
    // jTable.put(jKeyStr, jValueStr);
    JavaCastObject(hJKeyStr, "java/lang/Object");
    JavaSetObject(hJTable, hJKeyStr);
    JavaSetObject(hJTable, hJValueStr, "java/lang/Object");
    JavaCallMethod(hJTable, "put");

    // retrieve an Object from the Hashtable
    // Object jRetVal = jTable.get(jKeyStr);
    JavaSetObject(hJTable, hJKeyStr);
    JavaCallMethod(hJTable, "get");
    hJRetVal := JavaGetObject(hJTable);

    // retrieve print out the java string object
    // System.out.println("Found value \""+jRetVal+"\" in Hashtable.");
    JavaCallMethod(hJRetVal, "toString");
    JavaGetString(hJRetVal, sBuffer);
    Print("Found value \""+sBuffer+"\" in Hashtable.");

    // Free all objects
    JavaFreeObject(hJTable);
    JavaFreeObject(hJKeyStr);
    JavaFreeObject(hJValueStr);
    JavaFreeObject(hJRetVal);
  end TPureBdl;

  transaction TEnd
  begin
  end TEnd;

Sample scripts

JavaFrameworkBankSample.bdf

BankSample.java, Account.java, Customer.java, PremiumCustomer.java