OpenEdge Development:<br />Java Open Clients Relationship between the RunTimeProperties class and Connection objects

Relationship between the RunTimeProperties class and Connection objects

The values set in a Connection object supersede the static RunTimeProperties class values. This relationship is particularly important if a static RunTimeProperties property is updated after a Connection object has been instantiated. In this situation, the effect on a Connection object instance depends on whether that specific property was overridden in that object after it was instantiated, as described in Table 7–7.

Table 7–7: Relationship between RunTimeProperties and Connection object properties
If the RunTimeProperties property has . . .	And the property in the Connection object has . . .	Then the value of the property is returned from the . . .
Not changed	Not changed	`RunTimeProperties` class
Changed	Not changed	`RunTimeProperties` class
Not changed	Changed	`Connection` object
Changed	Changed	`Connection` object

Note: The converse of this relationship is not true. That is, changing the value of a property for a Connection object does not affect the static value of that property, nor does it affect the value of that property in any other object instance.

The following example uses the waitifBusy property to illustrate the relationship between RunTimeProperties and Connection object properties:

Connection conn; boolean ret; RunTimeProperties.setWaitIfBusy(); conn = new Connection(url, userid, password, Info); ret = conn.getBooleanProperty("PROGRESS.Session.WaitIfBusy"); System.out.println("(A) WaitIfBusy= " + ret); RunTimeProperties.setNoWaitIfBusy(); // change static property ret = conn.getWaitIfBusy(); // equivalent accessor method System.out.println("(B) WaitIfBusy= " + ret); conn.setWaitIfBusy(); // change conn object property ret = conn.getBooleanProperty("PROGRESS.Session.WaitIfBusy"); System.out.println("(C) WaitIfBusy= " + ret); RunTimeProperties.setBooleanProperty("PROGRESS.Session.WaitIfBusy", false); ret = conn.getWaitIfBusy(); System.out.println("(D) WaitIfBusy= " + ret); RunTimeProperties.setWaitIfBusy(); ret = conn.getBooleanProperty("PROGRESS.Session.WaitIfBusy"); System.out.println("(E) WaitIfBusy= " + ret);

Connection                 conn; 
boolean                        ret; 
RunTimeProperties.setWaitIfBusy(); 
conn = new Connection(url, userid, password, Info); 
ret = conn.getBooleanProperty("PROGRESS.Session.WaitIfBusy"); 
System.out.println("(A) WaitIfBusy= " + ret); 
RunTimeProperties.setNoWaitIfBusy(); // change static property 
ret = conn.getWaitIfBusy(); // equivalent accessor method 
System.out.println("(B) WaitIfBusy= " + ret); 
conn.setWaitIfBusy(); // change conn object property 
ret = conn.getBooleanProperty("PROGRESS.Session.WaitIfBusy"); 
System.out.println("(C) WaitIfBusy= " + ret); 
RunTimeProperties.setBooleanProperty("PROGRESS.Session.WaitIfBusy", 
                                                                         false); 
ret = conn.getWaitIfBusy(); 
System.out.println("(D) WaitIfBusy= " + ret); 
RunTimeProperties.setWaitIfBusy(); 
ret = conn.getBooleanProperty("PROGRESS.Session.WaitIfBusy"); 
System.out.println("(E) WaitIfBusy= " + ret);

When executed, this program prints the following result:


(A) WaitIfBusy= true (B) WaitIfBusy= false (C) WaitIfBusy= true (D) WaitIfBusy= true (E) WaitIfBusy= true