Examples of com.fasterxml.uuid.impl.NameBasedGenerator

com.fasterxml.uuid.impl.NameBasedGenerator
Implementation of UUID generator that uses one of name-based generation methods (variants 3 (MD5) and 5 (SHA1)).
As all JUG provided implementations, this generator is fully thread-safe; access to digester is synchronized as necessary. @since 3.0

    {
        // this test will attempt to check for reasonable behavior of the
        // generateNameBasedUUID method
        
        // we need a instance to use
        NameBasedGenerator uuid_gen = Generators.nameBasedGenerator(NameBasedGenerator.NAMESPACE_URL);
        
        UUID uuid_array[] = new UUID[SIZE_OF_TEST_ARRAY];
        
        // now create the array of uuids
        for (int i = 0; i < uuid_array.length; i++) {
            uuid_array[i] = uuid_gen.generate("test name" + i);
        }
        
        // check that none of the UUIDs are null
        checkUUIDArrayForNonNullUUIDs(uuid_array);
        
        // check that all the uuids were correct variant and version
        checkUUIDArrayForCorrectVariantAndVersion(uuid_array, UUIDType.NAME_BASED_SHA1);
        
        // check that all uuids were unique
        checkUUIDArrayForUniqueness(uuid_array);
        
        // now create the array of uuids
        for (int i = 0; i < uuid_array.length; i++) {
            uuid_array[i] = uuid_gen.generate("test name" + i);
        }
        
        // check that none of the UUIDs are null
        checkUUIDArrayForNonNullUUIDs(uuid_array);
        
        // check that all the uuids were correct variant and version
        checkUUIDArrayForCorrectVariantAndVersion(uuid_array, UUIDType.NAME_BASED_SHA1);
        
        // check that all uuids were unique
        checkUUIDArrayForUniqueness(uuid_array);
        
        // now, lets make sure generating two sets of name based uuid with the
        // same args always gives the same result
        uuid_array = new UUID[SIZE_OF_TEST_ARRAY];


        uuid_gen = Generators.nameBasedGenerator(NameBasedGenerator.NAMESPACE_URL);
        // now create the array of uuids
        for (int i = 0; i < uuid_array.length; i++) {
            uuid_array[i] = uuid_gen.generate("test name" + i);
        }
        
        UUID uuid_array2[] = new UUID[SIZE_OF_TEST_ARRAY];
        uuid_gen = Generators.nameBasedGenerator(NameBasedGenerator.NAMESPACE_URL);
        
        // now create the array of uuids
        for (int i = 0; i < uuid_array2.length; i++) {
            uuid_array2[i] = uuid_gen.generate("test name" + i);
        }
        
        // check that none of the UUIDs are null
        checkUUIDArrayForNonNullUUIDs(uuid_array);
        checkUUIDArrayForNonNullUUIDs(uuid_array2);

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        }
        
        // this test will attempt to check for reasonable behavior of the
        // generateNameBasedUUID method


        NameBasedGenerator uuid_gen = Generators.nameBasedGenerator(NameBasedGenerator.NAMESPACE_URL, MESSAGE_DIGEST);
        UUID uuid_array[] = new UUID[SIZE_OF_TEST_ARRAY];
        
        // now create the array of uuids
        for (int i = 0; i < uuid_array.length; i++)
        {
            uuid_array[i] = uuid_gen.generate("test name"+i);
        }
        
        // check that none of the UUIDs are null
        checkUUIDArrayForNonNullUUIDs(uuid_array);
        
        // check that all the uuids were correct variant and version
        checkUUIDArrayForCorrectVariantAndVersion(uuid_array, UUIDType.NAME_BASED_MD5);
        
        // check that all uuids were unique
        checkUUIDArrayForUniqueness(uuid_array);
        
        // now create the array of uuids
        for (int i = 0; i < uuid_array.length; i++)
        {
            uuid_array[i] = uuid_gen.generate("test name" + i);
        }
        
        // check that none of the UUIDs are null
        checkUUIDArrayForNonNullUUIDs(uuid_array);
        
        // check that all the uuids were correct variant and version
        checkUUIDArrayForCorrectVariantAndVersion(uuid_array, UUIDType.NAME_BASED_MD5);
        
        // check that all uuids were unique
        checkUUIDArrayForUniqueness(uuid_array);
        
        // now, lets make sure generating two sets of name based uuid with the
        // same args always gives the same result
        uuid_array = new UUID[SIZE_OF_TEST_ARRAY];
        
        // now create the array of uuids
        for (int i = 0; i < uuid_array.length; i++) {
            uuid_array[i] = uuid_gen.generate("test name" + i);
        }
        
        UUID uuid_array2[] = new UUID[SIZE_OF_TEST_ARRAY];
        
        // now create the array of uuids
        for (int i = 0; i < uuid_array2.length; i++) {
            uuid_array2[i] = uuid_gen.generate("test name" + i);
        }
        
        // check that none of the UUIDs are null
        checkUUIDArrayForNonNullUUIDs(uuid_array);
        checkUUIDArrayForNonNullUUIDs(uuid_array2);

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                type = UUIDType.NAME_BASED_SHA1;
            } catch (NoSuchAlgorithmException nex) {
                throw new IllegalArgumentException("Couldn't instantiate SHA-1 MessageDigest instance: "+nex.toString());
            }
        }
        return new NameBasedGenerator(namespace, digester, type);
    }

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Related Classes of com.fasterxml.uuid.impl.NameBasedGenerator

com.fasterxml.uuid.Generators

com.fasterxml.uuid.UUIDGeneratorTest

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