Examples of com.amazonaws.util.json.JSONObject

com.amazonaws.util.json.JSONObject
A JSONObject is an unordered collection of name/value pairs. Its external form is a string wrapped in curly braces with colons between the names and values, and commas between the values and names. The internal form is an object having get and opt methods for accessing the values by name, and put methods for adding or replacing values by name. The values can be any of these types: Boolean, JSONArray, JSONObject, Number, String, or the JSONObject.NULL object. A JSONObject constructor can be used to convert an external form JSON text into an internal form whose values can be retrieved with the get and opt methods, or to convert values into a JSON text using the put and toString methods. A get method returns a value if one can be found, and throws an exception if one cannot be found. An opt method returns a default value instead of throwing an exception, and so is useful for obtaining optional values.
The generic get() and opt() methods return an object, which you can cast or query for type. There are also typed get and opt methods that do type checking and type coercion for you.
The put methods adds values to an object. For example,
```
 myString = new JSONObject().put("JSON", "Hello, World!").toString();
```
produces the string {"JSON": "Hello, World"}.
The texts produced by the toString methods strictly conform to the JSON syntax rules. The constructors are more forgiving in the texts they will accept:
- An extra , (comma) may appear just before the closing brace.
- Strings may be quoted with ' (single quote).
- Strings do not need to be quoted at all if they do not begin with a quote or single quote, and if they do not contain leading or trailing spaces, and if they do not contain any of these characters: { } [ ] / \ : , = ; # and if they do not look like numbers and if they are not the reserved words true, false, or null.
- Keys can be followed by = or => as well as by :.
- Values can be followed by ; (semicolon) as well as by , (comma).
- Numbers may have the 0x- (hex) prefix.
@version 2010-05-17

    private static Map<String, String> convertJSONToMap(String descriptionJSONString) {
        if (descriptionJSONString == null) {
            return null;
        }
        try {
            JSONObject descriptionJSON = new JSONObject(descriptionJSONString);
            Iterator<String> keysIterator = descriptionJSON.keys();
            Map<String, String> materialsDescription = new HashMap<String, String>();
            while(keysIterator.hasNext()) {
                String key = keysIterator.next();
                materialsDescription.put(key, descriptionJSON.getString(key));
            }
            return materialsDescription;
        } catch (JSONException e) {
            throw new AmazonClientException("Unable to parse encryption materials description from metadata :" + e.getMessage());
        }

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        byte[] initVectorBytes = symmetricCipher.getIV();
        initVectorBytes = Base64.encodeBase64(initVectorBytes);
        metadata.addUserMetadata(Headers.CRYPTO_IV, new String(initVectorBytes));


        // Put the materials description into the object metadata as JSON
        JSONObject descriptionJSON = new JSONObject(materialsDescription);
        metadata.addUserMetadata(Headers.MATERIALS_DESCRIPTION, descriptionJSON.toString());
    }

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    /**
     * Returns a JSONObject representation of the instruction object.
     */
    private static JSONObject convertInstructionToJSONObject(EncryptionInstruction instruction) {
        JSONObject instructionJSON = new JSONObject();
        try {
            JSONObject materialsDescriptionJSON = new JSONObject(instruction.getMaterialsDescription());
            byte[] initVector = instruction.getSymmetricCipher().getIV();
            initVector = Base64.encodeBase64(initVector);
            byte[] encryptedKeyBytes = instruction.getEncryptedSymmetricKey();
            encryptedKeyBytes = Base64.encodeBase64(encryptedKeyBytes);


            instructionJSON.put(Headers.MATERIALS_DESCRIPTION, materialsDescriptionJSON.toString());
            instructionJSON.put(Headers.CRYPTO_KEY, new String(encryptedKeyBytes));
            instructionJSON.put(Headers.CRYPTO_IV, new String(initVector));


        } catch (JSONException e) {} // Keys are never null, so JSONException will never be thrown.
        return instructionJSON;

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     * Parses instruction data retrieved from S3 and returns a JSONObject representing the instruction
     */
    private static JSONObject parseJSONInstruction(S3Object instructionObject) {
        try {
            String instructionString = convertStreamToString(instructionObject.getObjectContent());
            return new JSONObject(instructionString);
        } catch (Exception e) {
            throw new AmazonClientException("Error parsing JSON instruction file: " + e.getMessage());
        }
    }

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        return true;
    }


    @Override
    public String toString() {
        return new JSONObject(this).toString();
    }

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                if (!messageBody.startsWith("{")) {
                    messageBody = new String(BinaryUtils.fromBase64(messageBody));
                }


                try {
                    JSONObject json = new JSONObject(messageBody);
                    String jsonMessage = json.getString("Message").replace("\\\"", "\"");


                    json = new JSONObject(jsonMessage);
                    String messageJobId = json.getString("JobId");
                    String messageStatus = json.getString("StatusMessage");


                    // Don't process this message if it wasn't the job we were looking for
                    if (!jobId.equals(messageJobId)) continue;


                    try {

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     *      preferred provider from Security.getProviders().
     * @return
     *      A non-null instruction object containing encryption information
     */
    public static EncryptionInstruction buildInstructionFromInstructionFile(S3Object instructionFile, EncryptionMaterialsProvider materialsProvider, Provider cryptoProvider) {
        JSONObject instructionJSON = parseJSONInstruction(instructionFile);
        try {
            // Get fields from instruction object
            byte[] encryptedSymmetricKeyBytes = instructionJSON.getString(Headers.CRYPTO_KEY).getBytes();
            byte[] initVectorBytes = instructionJSON.getString(Headers.CRYPTO_IV).getBytes();
            String materialsDescriptionString = instructionJSON.tryGetString(Headers.MATERIALS_DESCRIPTION);
            Map<String, String> materialsDescription = convertJSONToMap(materialsDescriptionString);


            // Decode from Base 64 to standard binary bytes
            encryptedSymmetricKeyBytes = Base64.decodeBase64(encryptedSymmetricKeyBytes);
            initVectorBytes = Base64.decodeBase64(initVectorBytes);

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     *      The instruction object to be stored in S3.
     * @return
     *      A put request to store the specified instruction object in S3.
     */
    public static PutObjectRequest createInstructionPutRequest(PutObjectRequest request, EncryptionInstruction instruction) {
        JSONObject instructionJSON = convertInstructionToJSONObject(instruction);
        byte[] instructionBytes = instructionJSON.toString().getBytes();
        InputStream instructionInputStream = new ByteArrayInputStream(instructionBytes);


        ObjectMetadata metadata = request.getMetadata();


        // Set the content-length of the upload

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        return request;
    }


    public static PutObjectRequest createInstructionPutRequest(String bucketName, String key, EncryptionInstruction instruction) {
        JSONObject instructionJSON = convertInstructionToJSONObject(instruction);
        byte[] instructionBytes = instructionJSON.toString().getBytes();
        InputStream instructionInputStream = new ByteArrayInputStream(instructionBytes);


        ObjectMetadata metadata = new ObjectMetadata();
        metadata.setContentLength(instructionBytes.length);
        metadata.addUserMetadata(Headers.CRYPTO_INSTRUCTION_FILE, "");

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    private static Map<String, String> convertJSONToMap(String descriptionJSONString) {
        if (descriptionJSONString == null) {
            return null;
        }
        try {
            JSONObject descriptionJSON = new JSONObject(descriptionJSONString);
            Iterator<String> keysIterator = descriptionJSON.keys();
            Map<String, String> materialsDescription = new HashMap<String, String>();
            while(keysIterator.hasNext()) {
                String key = keysIterator.next();
                materialsDescription.put(key, descriptionJSON.getString(key));
            }
            return materialsDescription;
        } catch (JSONException e) {
            throw new AmazonClientException("Unable to parse encryption materials description from metadata :" + e.getMessage());
        }

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