How to use

ensure

method

in

com.nuecho.rivr.core.util.Assert

private void assertInvariant() {
  Assert.ensure(mSpeechRecognition != null || mDtmfRecognition != null,
         "Must provide a non-null configuration for speech or DTMF");
}

public static void positive(long value, String symbol) {
  ensure(value > 0, symbol + " should be positive. Value=" + value);
}

public static void notNegative(long value, String symbol) {
  ensure(value >= 0, symbol + " should not be negative. Value=" + value);
}

/**
 * @param termChar The terminating DTMF character for DTMF input
 *            recognition. Must be empty or a single character.
 *            <code>null</code> to use the VoiceXML platform default
 * @see <a
 *      href="https://www.w3.org/TR/voicexml20/#dml6.3.3">https://www.w3.org/TR/voicexml20/#dml6.3.3</a>
 */
public void setTermChar(String termChar) {
  if (termChar != null) {
    Assert.ensure(termChar.equals("") || termChar.length() == 1, "Termchar must be empty or single character");
  }
  mTermChar = termChar;
}

public static void noNullValues(Collection<?> collection, String symbol) {
  Assert.notNull(collection, symbol);
  for (Object item : collection) {
    ensure(item != null, symbol + " should not contain null values.");
  }
}

public static void noNullValues(Object[] array, String symbol) {
  Assert.notNull(array, symbol);
  int index = 0;
  for (Object item : array) {
    ensure(item != null, symbol + "[" + index + "]  should not be null.");
    index++;
  }
}

public static void notEmpty(String string, String symbol) {
  notNull(string, symbol);
  ensure(!string.isEmpty(), symbol + " should not be empty.");
}

public static void noNullValues(List<?> list, String symbol) {
  Assert.notNull(list, symbol);
  int index = 0;
  for (Object item : list) {
    ensure(item != null, "item #" + index + " of " + symbol + " should not be null.");
    index++;
  }
}

public static void notEmpty(Collection<?> collection, String symbol) {
  notNull(collection, symbol);
  ensure(!collection.isEmpty(), symbol + " should not be empty.");
}

public void addWithExpression(String name, String initialExpression) {
  Assert.notNull(name, "name");
  Assert.ensure(VoiceXmlUtils.isValidIdentifierName(name), "Invalid ECMAScript identifier name: '" + name + "'");
  mVariables.put(name, initialExpression);
}

public void addWithString(String name, String string) {
  Assert.notNull(name, "name");
  Assert.ensure(VoiceXmlUtils.isValidIdentifierName(name), "Invalid ECMAScript identifier name: '" + name + "'");
  Assert.notNull(string, "string");
  mVariables.put(name, VoiceXmlDomUtil.createEcmaScriptStringLiteral(string));
}

/**
 * Builds the interaction. This method adds a speech and DTMF
 * recognition window after the prompts.
 *
 * @param speechRecognition configuration for the speech recognition
 * @param dtmfRecognition configuration for the DTMF recognition
 * @param noinputTimeout timeout value before a <code>noinput</code> is
 *            generated.
 * @param acknowledgeAudioItems audioItems to be played upon recognition
 * @return the interaction
 */
public Interaction build(DtmfRecognition dtmfRecognition,
             SpeechRecognition speechRecognition,
             Duration noinputTimeout,
             List<? extends AudioItem> acknowledgeAudioItems) {
  Assert.ensure(dtmfRecognition != null || speechRecognition != null,
         "Must provide at least one recognition configuration (speech or DTMF)");
  checkBuilt();
  FinalRecognitionWindow finalRecognitionWindow = new FinalRecognitionWindow(dtmfRecognition,
                                        speechRecognition,
                                        noinputTimeout);
  if (acknowledgeAudioItems != null) {
    finalRecognitionWindow.setAcknowledgeAudioItems(acknowledgeAudioItems);
  }
  return new Interaction(mName, mPrompts, finalRecognitionWindow);
}