Accessing properties of subobjects

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   Hello again! 

How do we access properties of sub- and subsub ojects using MERL? The following is my scenario.

I have a graph with an object named Obj1. Obj1 has a property named Prop1. 

The datatype for Prop1 is another object named Obj2. 

The Obj2 in turn have a property named Prop2. 

Prop2 has a data type of a Number. 

I want to check the value of Prop2 when writing a generator for the graph with Obj1.

Best Regards

/Tahir

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Tahir Members Profile Send Private Message Find Members Posts Add to Buddy List Major Contributor Joined: 01.Mar.2012 Points: 27	Post Options Post Reply Quote Tahir Report Post Thanks(0) Quote Reply Topic: Accessing properties of subobjects Posted: 02.Mar.2012 at 18:34
	Hello again! How do we access properties of sub- and subsub ojects using MERL? The following is my scenario. I have a graph with an object named Obj1. Obj1 has a property named Prop1. The datatype for Prop1 is another object named Obj2. The Obj2 in turn have a property named Prop2. Prop2 has a data type of a Number. I want to check the value of Prop2 when writing a generator for the graph with Obj1. Best Regards /Tahir

stevek Members Profile Send Private Message Find Members Posts Add to Buddy List MetaCase Joined: 11.Mar.2008 Points: 643	Post Options Post Reply Quote stevek Report Post Thanks(0) Quote Reply Posted: 02.Mar.2012 at 19:06
	You can iterate over the object or objects in a property with do or dowhile. E.g. to go through all Obj1s and list the value of their Prop1 object's Prop2: foreach .Obj1 { do :Prop1 { :Prop2 } newline } If Prop1 doesn't contain any object, then "do :Prop1 {}" will do nothing. For more details, please see the Workbench manual's chapter on MERL, 5.3.4 Control and navigation commands, 'Do loop'.