public String apply()

in meecrowave-core/src/main/java/org/apache/meecrowave/Meecrowave.java [1688:1731]
41 lines of code
6 McCabe index (conditional complexity)

        public String apply(final String value) {
            if (value.startsWith("decode:")) {
                if (transformers.isEmpty()) { // lazy loading
                    transformers.put("Static3DES", new ValueTransformer() { // compatibility with tomee
                        private final SecretKeySpec key = new SecretKeySpec(new byte[]{
                                (byte) 0x76, (byte) 0x6F, (byte) 0xBA, (byte) 0x39, (byte) 0x31,
                                (byte) 0x2F, (byte) 0x0D, (byte) 0x4A, (byte) 0xA3, (byte) 0x90,
                                (byte) 0x55, (byte) 0xFE, (byte) 0x55, (byte) 0x65, (byte) 0x61,
                                (byte) 0x13, (byte) 0x34, (byte) 0x82, (byte) 0x12, (byte) 0x17,
                                (byte) 0xAC, (byte) 0x77, (byte) 0x39, (byte) 0x19}, "DESede");

                        @Override
                        public String name() {
                            return "Static3DES";
                        }

                        @Override
                        public String apply(final String encodedPassword) {
                            Objects.requireNonNull(encodedPassword, "value can't be null");
                            try {
                                final byte[] cipherText = Base64.getDecoder().decode(encodedPassword);
                                final Cipher cipher = Cipher.getInstance("DESede");
                                cipher.init(Cipher.DECRYPT_MODE, key);
                                return new String(cipher.doFinal(cipherText), StandardCharsets.UTF_8);
                            } catch (final Exception e) {
                                throw new IllegalArgumentException(e);
                            }
                        }
                    });
                    for (final ValueTransformer t : ServiceLoader.load(ValueTransformer.class)) {
                        transformers.put(t.name(), t);
                    }
                }

                final String substring = value.substring("decode:".length());
                final int sep = substring.indexOf(':');
                if (sep < 0) {
                    throw new IllegalArgumentException("No transformer algorithm for " + value);
                }
                final String algo = substring.substring(0, sep);
                return Objects.requireNonNull(transformers.get(algo), "No ValueTransformer for value '" + value + "'").apply(substring.substring(sep + 1));
            }
            return value;
        }