Updating a DRM policy with the Java API

To update a DRM policy with the Java API:

1. Set up your development environment and include in your project all of the JAR files listed in Setting up the development environment.

2. Create a DRM Policy instance and read the DRM policy from a file or database.

   Policy policy = new Policy(policyBytes);
   

3. Update the DRM Policy object by setting its properties, such as its name and usage rules.

   // Change the DRM policy name.
   policy.setName("UpdatedDemoPolicy");
   
   // Add DRM module restrictions to the play right
   for (Right r: policy.getRights()) {
       if (r instanceof PlayRight) {
           PlayRight pr = (PlayRight) r;
           // Disallow Linux versions up to and including 1.9.  Allow
           // all other OSes and Linux versions above 1.9
           VersionInfo toExclude = new VersionInfo();
           toExclude.setOS("Linux");
           toExclude.setReleaseVersion("1.9");
           Collection<VersionInfo> exclusions = new ArrayList<VersionInfo>();
           exclusions.add(toExclude);
           ModuleRequirements drmRestrictions = new ModuleRequirements();
           drmRestrictions.setExcludedVersions(exclusions);
           pr.setDRMModuleRequirements(drmRestrictions);
           break;
       }
   }
   

4. Serialize the updated DRM Policy object and store it in a file or database.

   // Serialize the DRM policy.
   byte[] policyBytes = policy.getBytes();
   System.out.println("New DRM policy revision number: "
       +  policy.getRevision());
   // Write the DRM policy to a file.
   // Alternatively, the DRM policy may be stored in a database.
   FileOutputStream out = new FileOutputStream("demopolicy-updated.pol");
   out.write(policyBytes);
   out.close();
   

See com.adobe.flashaccess.samples.policy.UpdatePolicy in the Reference Implementation Command Line Tools samples directory for the source of this sample code.