Oracle® Fusion Middleware Developer's Guide for Oracle IRM Server 11g Release 1 (11.1.1) E12326-03 |
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Home > Developer's Guide for Oracl... > Code Samples for Java Appli... > Peeking a Sealed File
The following code demonstrates how to extract the metadata from sealed content using the peek
method. The sealed content can be provided as any type of java.io.InputStream
; this example uses a file input stream. Once peeked, the file metadata, which includes the Classification
details, can be examined. The sample code prints out the human-readable classification details (the labels) that were sealed into the content.
Th peek
method does not attempt to check the public header against its declared signature. If the metadata has been altered post-sealing, this method will not throw an exception.
Example 7-2
import static oracle.irm.engine.content.sealing.SealingOperationsInstance.peek; import java.io.FileInputStream; import java.io.IOException; import oracle.irm.engine.content.sealing.ContentDescription; import oracle.irm.engine.core.classification.Classification; import oracle.irm.engine.core.general.Label; public class PeekFile { public static void main(String[] args) throws IOException { // The name of the file to peek is the first // command line argument FileInputStream stream = new FileInputStream(args[0]); // Perform the peek, providing a stream to the sealed file ContentDescription contentDescription = peek(stream); // Close the file stream stream.close(); // Extract the classification details from the content Classification classification = contentDescription.getClassification(); // Show all the labels sealed into content for (Label label : classification.getLabels()) { System.out.println(label.getLocale().getDisplayName() + " : " + label.getName()); } } }