/**
* A {@link SubdialogueCall} is a {@link VoiceXmlOutputTurn} that invokes another external dialogue.
*
* <p>Parameters may be passed to the subdialogue and return values may be retrieved if the invoked
* subdialogue ends with a <code><return></code> instruction.
*
* @author Nu Echo Inc.
* @see Parameter
* @see <a
* href="http://www.w3.org/TR/voicexml20/#dml2.3.4">http://www.w3.org/TR/voicexml20/#dml2.3.4</a>
*/
public class SubdialogueCall extends VoiceXmlOutputTurn {
public static final String SUBDIALOGUE_RESULT_VARIABLE_NAME = "subdialogue";
private static final String SUBDIALOGUE_INVOCATION_TURN_TYPE = "subdialogue";
private static final String POST_DIALOGUE_SCRIPT_PROPERTY = "postDialogueScript";
private static final String SUBDIALOGUE_PARAMETERS_PROPERTY = "subdialogueParameters";
private static final String SUBMIT_URI_PROPERTY = "uri";
private static final String SUBMIT_PARAMETERS_PROPERTY = "submitParameters";
private static final String SUBMIT_METHOD_PROPERTY = "submitMethod";
private static final String FETCH_CONFIGURATION_PROPERTY = "fetchConfiguration";
private final String mUri;
private Collection<Parameter> mParameters = Collections.emptyList();
private VariableList mSubmitParameters = new VariableList();
private SubmitMethod mMethod = SubmitMethod.get;
private DocumentFetchConfiguration mFetchConfiguration;
private String mPostDialogueScript;
/**
* @param name The name of this turn. Not empty.
* @param uri The URI of the subdialogue. Not empty.
*/
public SubdialogueCall(String name, String uri) {
super(name);
Assert.notEmpty(uri, "uri");
mUri = uri;
}
/**
* @param parameters A list of {@link Parameter} that will be passed to the subdialogue. Not null.
*/
public final void setSubdialogueParameters(Collection<Parameter> parameters) {
Assert.noNullValues(parameters, "parameters");
mParameters = new ArrayList<Parameter>(parameters);
}
/**
* @param subdialogueParameters A list of {@link Parameter} that will be passed to the
* subdialogue. Not null.
*/
public final void setSubdialogueParameters(Parameter... subdialogueParameters) {
setSubdialogueParameters(asListChecked(subdialogueParameters));
}
/** @param submitParameters A list of variable to submit when invoking the URI. Not null. */
public final void setSubmitParameters(VariableList submitParameters) {
Assert.notNull(submitParameters, "submitParameters");
mSubmitParameters = submitParameters;
}
/**
* @param method The HTTP method used to invoke the subdialogue (GET or POST). <code>null</code>
* to use the VoiceXML platform default
* @see SubmitMethod
*/
public final void setMethod(SubmitMethod method) {
mMethod = method;
}
/**
* @param fetchConfiguration The {@link DocumentFetchConfiguration}. <code>null</code> to use the
* VoiceXML platform default.
*/
public final void setFetchConfiguration(DocumentFetchConfiguration fetchConfiguration) {
mFetchConfiguration = fetchConfiguration;
}
/** @param postDialogueScript The ECMAScript script to execute after subdialogue invocation. */
public final void setPostDialogueScript(String postDialogueScript) {
mPostDialogueScript = postDialogueScript;
}
public final String getUri() {
return mUri;
}
public final Collection<Parameter> getVoiceXmlParameters() {
return unmodifiableCollection(mParameters);
}
public final VariableList getSubmitParameters() {
return mSubmitParameters;
}
public final SubmitMethod getMethod() {
return mMethod;
}
public final String getPostDialogueScript() {
return mPostDialogueScript;
}
public final DocumentFetchConfiguration getFetchConfiguration() {
return mFetchConfiguration;
}
@Override
protected final String getOuputTurnType() {
return SUBDIALOGUE_INVOCATION_TURN_TYPE;
}
@Override
protected void addTurnProperties(JsonObjectBuilder builder) {
JsonUtils.add(builder, SUBMIT_URI_PROPERTY, mUri);
JsonUtils.add(builder, SUBMIT_METHOD_PROPERTY, mMethod.name());
JsonUtils.add(builder, SUBMIT_PARAMETERS_PROPERTY, mSubmitParameters);
JsonUtils.add(builder, SUBDIALOGUE_PARAMETERS_PROPERTY, JsonUtils.toJson(mParameters));
JsonUtils.add(builder, FETCH_CONFIGURATION_PROPERTY, mFetchConfiguration);
JsonUtils.add(builder, POST_DIALOGUE_SCRIPT_PROPERTY, getPostDialogueScript());
}
@Override
protected void fillVoiceXmlDocument(
Document document, Element formElement, VoiceXmlDialogueContext dialogueContext)
throws VoiceXmlDocumentRenderingException {
List<String> submitNameList = new ArrayList<String>();
VariableList submitVariableList = mSubmitParameters;
if (submitVariableList != null) {
addVariables(formElement, submitVariableList);
for (Entry<String, String> entry : mSubmitParameters) {
submitNameList.add(entry.getKey());
}
}
Element subdialogueElement = DomUtils.appendNewElement(formElement, SUBDIALOG_ELEMENT);
subdialogueElement.setAttribute(NAME_ATTRIBUTE, SUBDIALOGUE_FORM_ITEM_NAME);
subdialogueElement.setAttribute(SRC_ATTRIBUTE, mUri);
if (!submitNameList.isEmpty()) {
subdialogueElement.setAttribute(NAME_LIST_ATTRIBUTE, StringUtils.join(submitNameList, " "));
}
for (Parameter parameter : mParameters) {
Element paramElement = DomUtils.appendNewElement(subdialogueElement, PARAM_ELEMENT);
paramElement.setAttribute(NAME_ATTRIBUTE, parameter.getName());
setAttribute(paramElement, VALUE_ATTRIBUTE, parameter.getValue());
setAttribute(paramElement, EXPR_ATTRIBUTE, parameter.getExpression());
}
SubmitMethod submitMethod = mMethod;
if (submitMethod != null) {
subdialogueElement.setAttribute(METHOD_ATTRIBUTE, submitMethod.name());
}
DocumentFetchConfiguration fetchConfiguration = mFetchConfiguration;
if (fetchConfiguration != null) {
applyFetchAudio(subdialogueElement, fetchConfiguration.getFetchAudio());
applyRessourceFetchConfiguration(subdialogueElement, fetchConfiguration);
}
Element filledElement = DomUtils.appendNewElement(subdialogueElement, FILLED_ELEMENT);
createVarElement(
filledElement, SUBDIALOGUE_RESULT_VARIABLE_NAME, "dialog." + SUBDIALOGUE_FORM_ITEM_NAME);
if (mPostDialogueScript != null) {
createScript(filledElement, mPostDialogueScript);
}
createScript(
filledElement,
RIVR_SCOPE_OBJECT + ".addValueResult(" + SUBDIALOGUE_RESULT_VARIABLE_NAME + ");");
createGotoSubmit(filledElement);
}
/**
* {@link SubdialogueCall} parameter, can be created with a string value, a {@link JsonValue} or
* an expression.
*/
public static final class Parameter implements JsonSerializable {
private static final String NAME_PROPERTY = "name";
private static final String VALUE_PROPERTY = "value";
private static final String EXPRESSION_PROPERTY = "expression";
private final String mName;
private String mExpression;
private String mValue;
/**
* @param name The name of the parameter. Not empty.
* @param value The string value of the parameter. Not null.
* @return The newly created subdialogue parameter
*/
public static Parameter createWithValue(String name, String value) {
Assert.notNull(value, "value");
Parameter parameter = new Parameter(name);
parameter.mValue = value;
return parameter;
}
/**
* @param name The name of the parameter. Not empty.
* @param json The JSON value of the parameter. Not null.
* @return The newly created subdialogue parameter
*/
public static Parameter createWithJson(String name, JsonValue json) {
Assert.notNull(json, "json");
return createWithExpression(name, json.toString());
}
/**
* @param name The name of the parameter. Not empty.
* @param expression The ECMAScript expression of the parameter. Not null.
* @return The newly created subdialogue parameter
*/
public static Parameter createWithExpression(String name, String expression) {
Assert.notNull(expression, "expression");
Parameter parameter = new Parameter(name);
parameter.mExpression = expression;
return parameter;
}
private Parameter(String name) {
Assert.notEmpty(name, "name");
mName = name;
}
public String getName() {
return mName;
}
public String getExpression() {
return mExpression;
}
public String getValue() {
return mValue;
}
@Override
public JsonValue asJson() {
JsonObjectBuilder builder = JsonUtils.createObjectBuilder();
JsonUtils.add(builder, NAME_PROPERTY, mName);
JsonUtils.add(builder, EXPRESSION_PROPERTY, mExpression);
JsonUtils.add(builder, VALUE_PROPERTY, mValue);
return builder.build();
}
}
/** Builder used to ease the creation of instances of {@link SubdialogueCall} . */
public static class Builder {
private final String mName;
private String mUri;
private final List<Parameter> mParameters = Collections.emptyList();
private final VariableList mSubmitParameters = new VariableList();
private SubmitMethod mMethod = SubmitMethod.get;
private DocumentFetchConfiguration mFetchConfiguration;
private String mPostDialogueScript;
public Builder(String name) {
mName = name;
}
public Builder uri(String uri) {
Assert.notEmpty(uri, "uri");
mUri = uri;
return this;
}
public Builder addVoiceXmlParameter(Parameter parameter) {
Assert.notNull(parameter, "parameter");
mParameters.add(parameter);
return this;
}
public Builder addSubmitParameterExpression(String name, String expression) {
Assert.notEmpty(name, "name");
mSubmitParameters.addWithExpression(name, expression);
return this;
}
public Builder addSubmitParameterString(String name, String string) {
Assert.notEmpty(name, "name");
mSubmitParameters.addWithString(name, string);
return this;
}
public Builder setMethod(SubmitMethod method) {
Assert.notNull(method, "method");
mMethod = method;
return this;
}
public Builder setFetchConfiguration(DocumentFetchConfiguration fetchConfiguration) {
mFetchConfiguration = fetchConfiguration;
return this;
}
public Builder setPostDialogueScript(String postDialogueScript) {
mPostDialogueScript = postDialogueScript;
return this;
}
public SubdialogueCall build() {
SubdialogueCall subdialogueCall = new SubdialogueCall(mName, mUri);
subdialogueCall.setMethod(mMethod);
subdialogueCall.setPostDialogueScript(mPostDialogueScript);
subdialogueCall.setFetchConfiguration(mFetchConfiguration);
subdialogueCall.setSubdialogueParameters(mParameters);
subdialogueCall.setSubmitParameters(mSubmitParameters);
return subdialogueCall;
}
}
}
/** Builder used to ease the creation of instances of {@link SubdialogueCall} . */
public static class Builder {
private final String mName;
private String mUri;
private final List<Parameter> mParameters = Collections.emptyList();
private final VariableList mSubmitParameters = new VariableList();
private SubmitMethod mMethod = SubmitMethod.get;
private DocumentFetchConfiguration mFetchConfiguration;
private String mPostDialogueScript;
public Builder(String name) {
mName = name;
}
public Builder uri(String uri) {
Assert.notEmpty(uri, "uri");
mUri = uri;
return this;
}
public Builder addVoiceXmlParameter(Parameter parameter) {
Assert.notNull(parameter, "parameter");
mParameters.add(parameter);
return this;
}
public Builder addSubmitParameterExpression(String name, String expression) {
Assert.notEmpty(name, "name");
mSubmitParameters.addWithExpression(name, expression);
return this;
}
public Builder addSubmitParameterString(String name, String string) {
Assert.notEmpty(name, "name");
mSubmitParameters.addWithString(name, string);
return this;
}
public Builder setMethod(SubmitMethod method) {
Assert.notNull(method, "method");
mMethod = method;
return this;
}
public Builder setFetchConfiguration(DocumentFetchConfiguration fetchConfiguration) {
mFetchConfiguration = fetchConfiguration;
return this;
}
public Builder setPostDialogueScript(String postDialogueScript) {
mPostDialogueScript = postDialogueScript;
return this;
}
public SubdialogueCall build() {
SubdialogueCall subdialogueCall = new SubdialogueCall(mName, mUri);
subdialogueCall.setMethod(mMethod);
subdialogueCall.setPostDialogueScript(mPostDialogueScript);
subdialogueCall.setFetchConfiguration(mFetchConfiguration);
subdialogueCall.setSubdialogueParameters(mParameters);
subdialogueCall.setSubmitParameters(mSubmitParameters);
return subdialogueCall;
}
}