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.

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