DescribeSObjectResult

1public void dependentPicklistSample() {
2  // inner class to decode a "validFor" bitset
3  class Bitset {
4    byte[] data;
5    
6    public Bitset(byte[] data) {
7      this.data = data == null ? new byte[0] : data;
8    }
9    
10    public boolean testBit(int n) {
11      return (data[n >> 3] & (0x80 >> n % 8)) != 0;
12    }
13    
14    public int size() {
15      return data.length * 8;
16    }
17  }
18  
19  try {
20    DescribeSObjectResult describeSObjectResult = connection.describeSObject("Case");
21    Field[] fields = describeSObjectResult.getFields();
22    // create a map of all fields for later lookup 
23    Map fieldMap = new HashMap();
24    for (int i = 0; i < fields.length; i++) {
25      fieldMap.put(fields[i].getName(), fields[i]);
26    }
27    for (int i = 0; i < fields.length; i++) {
28      // check whether this is a dependent picklist
29      if (fields[i].getDependentPicklist()) {
30        // get the controller by name
31        Field controller = (Field)fieldMap.get(fields[i].getControllerName());
32        System.out.println("Field '" + fields[i].getLabel() + "' depends on '" +
33        controller.getLabel() + "'");
34        PicklistEntry[] picklistValues = fields[i].getPicklistValues();
35        for (int j = 0; j < picklistValues.length; j++) {
36          // for each PicklistEntry: list all controlling values for which it is valid
37          System.out.println("Item: '" + picklistValues[j].getLabel() +
38          "' is valid for: ");
39          Bitset validFor = new Bitset(picklistValues[j].getValidFor());
40          if (FieldType.picklist == controller.getType()) {
41            // if the controller is a picklist, list all
42            // controlling values for which this entry is valid
43            for (int k = 0; k < validFor.size(); k++) {
44              if (validFor.testBit(k)) {
45                // if bit k is set, this entry is valid for the
46                // for the controlling entry at index k
47                System.out.println(controller.getPicklistValues()[k].getLabel());
48              }
49            }
50          } else if (FieldType._boolean == controller.getType()) {
51            // the controller is a checkbox
52            // if bit 1 is set this entry is valid if the controller is checked
53            if (validFor.testBit(1)) {
54              System.out.println(" checked");
55            }
56            // if bit 0 is set this entry is valid if the controller is not checked
57            if (validFor.testBit(0)) {
58              System.out.println(" unchecked");
59            }
60          }
61        }
62      }
63    }
64  } catch (ConnectionException ce) {
65    ce.printStackTrace();
66  }
67}