Java

Firebase PUT - Writing Data

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Demonstrates how to PUT new data to a Firebase JSON database. The data used in this example is at Chilkat Firebase Pigs Database, and is shown here:

Chilkat2 Java

import com.chilkatsoft.chilkat2.AuthGoogle;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.FileAccess;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.Prng;
import com.chilkatsoft.chilkat2.Rest;
import com.chilkatsoft.chilkat2.StringBuilder;

public class ChilkatExample {

    public static void main(String[] args) {
        // Demonstrates how to PUT new data to a Firebase JSON database.

        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        // This example assumes a JWT authentication token, if required, has been previously obtained.
        // See Get Firebase Access Token from JSON Service Account Private Key for sample code.

        // Load the previously obtained Firebase access token into a string.
        FileAccess fac = new FileAccess();
        String accessToken;
        try {
            accessToken = fac.readEntireTextFile("qa_data/tokens/firebaseToken.txt", "utf-8");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        Rest rest = new Rest();

        // Make the initial connection (without sending a request yet).
        // Once connected, any number of requests may be sent.  It is not necessary to explicitly
        // call Connect before each request.
        try {
            rest.connect("chilkat.firebaseio.com", 443, true, true);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        AuthGoogle authGoogle = new AuthGoogle();
        authGoogle.setAccessToken(accessToken);
        rest.setAuthGoogle(authGoogle);

        // Chilkat's sample data (pig-rescue data) is publicly readable at: https://chilkat.firebaseio.com/.json
        // This data is publicly readable, but not writable.  You'll need to
        // run against your own database..

        // Generate a new push ID.
        Prng prng = new Prng();
        String pushId = prng.firebasePushId();

        // We're going to add a new pig with just the name.
        JsonObject pigRecord = new JsonObject();
        pigRecord.appendString("name", "William");

        StringBuilder path = new StringBuilder();
        path.append("/pig-rescue/animal/");
        path.append(pushId);
        path.append(".json");

        // The string content of the last arg passed is  {"name":"William"}
        String jsonResponse;
        try {
            jsonResponse = rest.fullRequestString("PUT", path.getAsString(), pigRecord.emit());
        } catch (ChilkatException e) {
            // Something happened in the communications (either no request was sent, or no response was received.
            // (The Chilkat REST API also has lower-level methods where an app can send the request in one call,
            // and then receive the response in another call.)
            System.out.println(e.getLastErrorText());
            return;
        }

        // Check the response status code.   A 200 response status indicates success.
        if (rest.getResponseStatusCode() != 200) {
            System.out.println(rest.getResponseStatusText());
            System.out.println(jsonResponse);
            System.out.println("Failed.");
            return;
        }

        System.out.println(jsonResponse);
        System.out.println("Success.");

        // Note: In many of the Chilkat examples, you may notice strange ways
        // of doing something that should be simpler and shorter.  For example,
        // building the path (above) could've been written differently,
        // with some simple string concatenation.
        //
        // The reason is that the Chilkat examples are written in a
        // proprietary "example code" scripting language,
        // and then automatically generated to each of the different programming
        // languages you see on example-code.com.  The code generation is
        // limited in what it can do.  For example, string concatentation
        // is not yet a feature of the "example code" scripting language (as of May 2016),
        // and therefore you won't see the use of a programming language's string
        // concatentation operators in any example.
        //
    }
}