Added campaign reference example

Bryan Worrell · Bryan Worrell · commit 05dd7b96481a · 2015-03-04T18:13:28.000-05:00
diff --git a/examples/campaign-reference.py b/examples/campaign-reference.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python
+# Copyright (c) 2015, The MITRE Corporation. All rights reserved.
+# See LICENSE.txt for complete terms.
+
+"""
+Demonstrates the methods for adding related Campaign references to an
+Indicator object.
+"""
+
+from stix.core import STIXPackage
+from stix.common import CampaignRef
+from stix.campaign import Campaign
+from stix.indicator import Indicator
+
+
+def main():
+    # Build Campaign instances
+    camp1 = Campaign(title='Campaign 1')
+    camp2 = Campaign(title='Campaign 2')
+
+    # Build a CampaignRef object, setting the `idref` to the `id_` value of
+    # our `camp2` Campaign object.
+    campaign_ref = CampaignRef(idref=camp2.id_)
+
+    # Build an Indicator object.
+    i = Indicator()
+
+    # Add CampaignRef object pointing to `camp2`.
+    i.add_related_campaign(campaign_ref)
+
+    # Add Campaign object, which gets promoted into an instance of
+    # CampaignRef type internally. Only the `idref` is set.
+    i.add_related_campaign(camp1)
+
+    # Build our STIX Package and attach our Indicator and Campaign objects.
+    package = STIXPackage()
+    package.add_indicator(i)
+    package.add_campaign(camp1)
+    package.add_campaign(camp2)
+
+    # Print!
+    print package.to_xml()
+
+if __name__ == "__main__":
+    main()
