const StatementPayload = require('../repository/statement-payload');
const XSD = require('../model/types').XSD;
/**
* Object builder used for constructing a statement addition payload.
*
* @class
* @author Mihail Radkov
* @author Svilen Velikov
*/
class AddStatementPayload extends StatementPayload {
/**
* Sets the language this statement's object.
*
* This makes the statement a literal.
*
* @param {string} [language] the object's language
* @return {AddStatementPayload} the payload for method chaining
*/
setLanguage(language) {
this.payload.language = language;
return this;
}
/**
* Returns the statement object's language.
*
* Having a language means it is a literal.
*
* @return {string} the language
*/
getLanguage() {
return this.payload.language;
}
/**
* Sets the data type this statement's object.
*
* This makes the statement a literal.
*
* @param {string} [dataType] the object's data type
* @return {AddStatementPayload} the payload for method chaining
*/
setDataType(dataType) {
this.payload.dataType = dataType;
return this;
}
/**
* Returns the statement object's data type.
*
* Having a data type means it is a literal.
*
* @return {string} the data type
*/
getDataType() {
return this.payload.dataType;
}
/**
* Sets the statement's object value making it a literal.
*
* If the data type is not provided, it will try to autodetect it:
* <ul>
* <li>integer -> xsd:integer</li>
* <li>float -> xsd:decimal</li>
* <li>boolean -> xsd:boolean</li>
* </ul>
* Everything else will be considered as xsd:string.
*
* To set a language the data type must be xsd:string.
*
* @param {*} value the statements object value
* @param {string} [type] the statements object data type
* @param {string} [language] the statements object language
* @return {AddStatementPayload} the payload for method chaining
*/
setObjectLiteral(value, type, language) {
if (type) {
if (type === XSD.STRING && language) {
this.setLanguage(language);
}
this.setDataType(type);
} else {
this.setDataType(this.detectLiteralType(value));
}
this.setObject(value);
return this;
}
/**
* Autodetect the provided value's data type.
*
* @private
* @param {*} value the value which type will be autodetected
* @return {string} the detected data type
*/
detectLiteralType(value) {
const valueType = typeof value;
if (valueType === 'number') {
if (value % 1 === 0) {
return XSD.INTEGER;
} else {
return XSD.DECIMAL;
}
} else if (valueType === 'boolean') {
return XSD.BOOLEAN;
}
// Default
return XSD.STRING;
}
/**
* Returns if this statement payload is for a literal. A literal have
* data type and/or language.
*
* @return {boolean} <code>true</code> if it is a literal payload or
* <code>false</code> otherwise
*/
isLiteral() {
return !!(this.payload.language || this.payload.dataType);
}
/**
* Sets the base URI that is used for resolving any relative URIs in the
* current payload.
*
* @param {string} baseURI the base URI
* @return {AddStatementPayload} the payload for method chaining
*/
setBaseURI(baseURI) {
this.payload.baseURI = baseURI;
return this;
}
/**
* Returns the base URI that is used for resolving any relative URIs.
*
* @return {string} the base URI
*/
getBaseURI() {
return this.payload.baseURI;
}
}
module.exports = AddStatementPayload;