Java

DynamoDB - ListTables

See more Amazon DynamoDB Examples

Returns an array of table names associated with the current account and endpoint. The output from ListTables is paginated, with each page returning a maximum of 100 table names. Chilkat2 Java

import com.chilkatsoft.chilkat2.AuthAws;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.Rest;
import com.chilkatsoft.chilkat2.StringBuilder;

public class ChilkatExample {

    public static void main(String[] args) {
        Rest rest = new Rest();

        // Implements the following CURL command:

        // curl -X POST https://dynamodb.us-west-2.amazonaws.com/ \
        //   -H "Accept-Encoding: identity" \
        //   -H "Content-Type: application/x-amz-json-1.0" \
        //   -H "Authorization: AWS4-HMAC-SHA256 Credential=<Credential>, SignedHeaders=<Headers>, Signature=<Signature>" \
        //   -H "X-Amz-Date: <Date>" \
        //   -H "X-Amz-Target: DynamoDB_20120810.ListTables" \
        //   -d '{
        //     "Limit": 100
        // }'

        // Use the following online tool to generate REST code from a CURL command
        // Convert a cURL Command to REST Source Code

        AuthAws authAws = new AuthAws();
        authAws.setAccessKey("AWS_ACCESS_KEY");
        authAws.setSecretKey("AWS_SECRET_KEY");
        // Don't forget to change the region to your particular region. (Also make the same change in the call to Connect below.)
        authAws.setRegion("us-west-2");
        authAws.setServiceName("dynamodb");

        // SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
        rest.setAuthAws(authAws);

        // URL: https://dynamodb.us-west-2.amazonaws.com/
        boolean bTls = true;
        int port = 443;
        boolean bAutoReconnect = true;
        // Don't forget to change the region domain (us-west-2.amazonaws.com) to your particular region.
        try {
            rest.connect("dynamodb.us-west-2.amazonaws.com", port, bTls, bAutoReconnect);
        } catch (ChilkatException e) {
            System.out.println("ConnectFailReason: " + rest.getConnectFailReason());
            System.out.println(e.getLastErrorText());
            return;
        }

        // Note: The above code does not need to be repeatedly called for each REST request.
        // The rest object can be setup once, and then many requests can be sent.  Chilkat will automatically
        // reconnect within a FullRequest* method as needed.  It is only the very first connection that is explicitly
        // made via the Connect method.

        // Use this online tool to generate code from sample JSON:
        // Generate Code to Create JSON

        // The following JSON is sent in the request body.

        // {
        //   "Limit": 100
        // }

        JsonObject json = new JsonObject();
        json.updateInt("Limit", 100);

        rest.addHeader("Content-Type", "application/x-amz-json-1.0");
        rest.addHeader("X-Amz-Target", "DynamoDB_20120810.ListTables");
        rest.addHeader("Accept-Encoding", "identity");

        StringBuilder sbRequestBody = new StringBuilder();
        json.emitSb(sbRequestBody);
        StringBuilder sbResponseBody = new StringBuilder();
        try {
            rest.fullRequestSb("POST", "/", sbRequestBody, sbResponseBody);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        int respStatusCode = rest.getResponseStatusCode();
        System.out.println("response status code = " + respStatusCode);

        if (respStatusCode >= 400) {
            System.out.println("Response Status Code = " + respStatusCode);
            System.out.println("Response Header:");
            System.out.println(rest.getResponseHeader());
            System.out.println("Response Body:");
            System.out.println(sbResponseBody.getAsString());
            return;
        }

        JsonObject jsonResponse = new JsonObject();
        jsonResponse.loadSb(sbResponseBody);

        jsonResponse.setEmitCompact(false);
        System.out.println(jsonResponse.emit());

        // Sample JSON response:

        // {
        //     "LastEvaluatedTableName": "Thread",
        //     "TableNames": ["Forum","Reply","Thread"]
        // }

        String strVal = "";

        String LastEvaluatedTableName = jsonResponse.stringOf("LastEvaluatedTableName");
        int i = 0;
        int count_i = jsonResponse.sizeOfArray("TableNames");
        while (i < count_i) {
            jsonResponse.setI(i);
            strVal = jsonResponse.stringOf("TableNames[i]");
            i = i + 1;
        }
    }
}