I have downloaded the sample command line program for prediction api and imported in eclipse as mention here .
I have imported that sample program and replaced the content of client_secrets.json with values of file which i downloaded from api console as mentioned in the above link .
I have built the model using standalone explorer .
But prediction i want to do through my java code . So below I have mentioned the code .
package com.google.api.services.samples.prediction.cmdline;
import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.HttpResponse;
import com.google.api.client.http.HttpResponseException;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.DataStoreFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.prediction.Prediction;
import com.google.api.services.prediction.PredictionScopes;
import com.google.api.services.prediction.model.Input;
import com.google.api.services.prediction.model.Input.InputInput;
import com.google.api.services.prediction.model.Output;
import com.google.api.services.prediction.model.Training;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Collections;
/**
* @author Yaniv Inbar
*/
public class PredictionSample {
/**
* Be sure to specify the name of your application. If the application name is {@code null} or
* blank, the application will log a warning. Suggested format is "MyCompany-ProductName/1.0".
*/
private static final String APPLICATION_NAME = "senti-model/1.0";
static final String MODEL_ID = "senti-model";
//static final String STORAGE_DATA_LOCATION = "enter_bucket/language_id.txt";
/** Directory to store user credentials. */
private static final java.io.File DATA_STORE_DIR =
new java.io.File(System.getProperty("user.home"), ".store/prediction_sample");
/**
* Global instance of the {@link DataStoreFactory}. The best practice is to make it a single
* globally shared instance across your application.
*/
private static FileDataStoreFactory dataStoreFactory;
/** Global instance of the HTTP transport. */
private static HttpTransport httpTransport;
/** Global instance of the JSON factory. */
private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
/** Authorizes the installed application to access user's protected data. */
private static Credential authorize() throws Exception {
// load client secrets
GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY,
new InputStreamReader(PredictionSample.class.getResourceAsStream("/client_secrets.json")));
if (clientSecrets.getDetails().getClientId().startsWith("Enter")
|| clientSecrets.getDetails().getClientSecret().startsWith("Enter ")) {
System.out.println(
"Enter Client ID and Secret from https://code.google.com/apis/console/?api=prediction "
+ "into prediction-cmdline-sample/src/main/resources/client_secrets.json");
System.exit(1);
}
// set up authorization code flow
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
httpTransport, JSON_FACTORY, clientSecrets,
Collections.singleton(PredictionScopes.PREDICTION)).setDataStoreFactory(
dataStoreFactory).build();
// authorize
return new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");
}
private static void run() throws Exception {
httpTransport = GoogleNetHttpTransport.newTrustedTransport();
dataStoreFactory = new FileDataStoreFactory(DATA_STORE_DIR);
// authorization
Credential credential = authorize();
Prediction prediction = new Prediction.Builder(
httpTransport, JSON_FACTORY, credential).setApplicationName(APPLICATION_NAME).build();
//train(prediction);
predict(prediction, "Is this sentence in English?");
predict(prediction, "¿Es esta frase en Español?");
predict(prediction, "Est-ce cette phrase en Français?");
}
private static void error(String errorMessage) {
System.err.println();
System.err.println(errorMessage);
System.exit(1);
}
private static void predict(Prediction prediction, String text) throws IOException {
Input input = new Input();
InputInput inputInput = new InputInput();
inputInput.setCsvInstance(Collections.<Object>singletonList(text));
input.setInput(inputInput);
Output output = prediction.trainedmodels().predict(MODEL_ID, input).execute();
System.out.println("Text: " + text);
System.out.println("Predicted language: " + output.getOutputLabel());
}
public static void main(String[] args) {
try {
run();
// success!
return;
} catch (IOException e) {
System.err.println(e.getMessage());
} catch (Throwable t) {
t.printStackTrace();
}
System.exit(1);
}
}
This is the error I am getting while executing this code:
Jun 24, 2014 2:11:09 PM com.google.api.client.util.store.FileDataStoreFactory setPermissionsToOwnerOnly
WARNING: unable to change permissions for everybody: C:\Users\deepesh.shetty\.store\prediction_sample
Jun 24, 2014 2:11:09 PM com.google.api.client.util.store.FileDataStoreFactory setPermissionsToOwnerOnly
WARNING: unable to change permissions for owner: C:\Users\deepesh.shetty\.store\prediction_sample
java.lang.NullPointerException
at com.google.api.client.repackaged.com.google.common.base.Preconditions.checkNotNull(Preconditions.java:191)
at com.google.api.client.util.Preconditions.checkNotNull(Preconditions.java:127)
at com.google.api.client.json.jackson2.JacksonFactory.createJsonParser(JacksonFactory.java:96)
at com.google.api.client.json.JsonObjectParser.parseAndClose(JsonObjectParser.java:85)
at com.google.api.client.json.JsonObjectParser.parseAndClose(JsonObjectParser.java:81)
at com.google.api.client.auth.oauth2.TokenResponseException.from(TokenResponseException.java:88)
at com.google.api.client.auth.oauth2.TokenRequest.executeUnparsed(TokenRequest.java:287)
at com.google.api.client.auth.oauth2.TokenRequest.execute(TokenRequest.java:307)
at com.google.api.client.auth.oauth2.Credential.executeRefreshToken(Credential.java:570)
at com.google.api.client.auth.oauth2.Credential.refreshToken(Credential.java:489)
at com.google.api.client.auth.oauth2.Credential.intercept(Credential.java:217)
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:859)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:410)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:343)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:460)
at com.google.api.services.samples.prediction.cmdline.PredictionSample.predict(PredictionSample.java:157)
at com.google.api.services.samples.prediction.cmdline.PredictionSample.run(PredictionSample.java:100)
at com.google.api.services.samples.prediction.cmdline.PredictionSample.main(PredictionSample.java:164)
Help me in issue . Thank you .
