Use resource adapters from an application

 

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The following example shows how you might access the CICS ECI resource adapter from an application. This code snippet assumes you have a resource reference called...

...that points to a...

...with the JNDI name...

It is a minimal sample, with no connection factory caching, and so on. 

private int getRate(String source) throws java.lang.Exception 
{
    
  // get JNDI context
  javax.naming.InitialContext ctx = new javax.naming.InitialContext();

  // get local JNDI environment
  javax.naming.Context env = (javax.naming.Context)ctx.lookup("java:comp/env");
  javax.resource.cci.ConnectionFactory connectionFactory connectionFactory =
    (javax.resource.cci.ConnectionFactory) env.lookup("eis/ref/ECICICS");

  // get a connection to the EIS
  javax.resource.cci.Connection connection = connectionFactory.getConnection();

  // create an interaction and a CICS ECI specific interaction spec
  javax.resource.cci.Interaction interaction = connection.createInteraction();
  com.ibm.connector2.cics.ECIInteractionSpec interactionSpec = new com.ibm.connector2.cics.ECIInteractionSpec();

  // create the comm area record
  source = (source.trim().toUpperCase()+"            ").substring(0, 12);
  GenericRecord record = new GenericRecord((source).getBytes("IBM037"));

  // set the CICS program name we want to call
  interactionSpec.setFunctionName("CALCRATE");

  // invoke the CICS program
  interaction.execute(interactionSpec, record, record);

  // close the interation and the connection
  interaction.close();
  connection.close();

  // get the results from the return comm area record
  byte[] commarea = record.getCommarea();
  int value = Integer.parseInt(new String(commarea, "IBM037").substring(8,12).trim());
  return value;
}

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