Commands

abort   stops the execution of the error-handling method and returns
abortProcessByID ( uniqueID : integer )   stops a specific process on the Qodly Server
abs ( number : number ) : number   returns the absolute (unsigned, positive) value of number
addToDate ( aDate : date , years : integer , months : integer , days : integer) : date   adds years, months, and days to the date you pass in aDate, then returns the result
arctan ( number : number ) : number   returns the angle, expressed in radians, of the tangent number
assert( boolExpression : boolean ) assert( boolExpression : boolean, msg : string )   evaluates the boolExpression assertion passed in parameter and, if it returns false, stops the code execution with an error message
asserted( boolExpression : boolean ) : boolean asserted( boolExpression : boolean, msg : string ) : boolean   returns the result of the evaluation of the boolExpression parameter. If boolExpression is false and if assertions are enabled, the error -10518 is generated
base64Encode ( toEncode : blob, string , encoded : blob, string {, *} )    encodes the string or blob value passed in the toEncode parameter in Base64 or Base64URL format
base64Decode ( toEncode : blob, string , encoded : blob, string {, *} )    decodes the string or blob value coded in Base64 or Base64URL format passed in the toDecode parameter
blobToPicture ( pictureBlob : blob , aPicture : picture , codec : string )   inserts a picture stored in a blob into a Qodly picture variable, regardless of its original format
bool ( expression : any ) : boolean   returns the boolean form of the expression you passed in expression
callChain : collection   returns a collection of objects describing each step of the method call chain within the current process
callWorker( process : string , formula : 4D.Function {, param {, ...paramN } : integer } ) callWorker ( process : string , formula : string {, param {, ...paramN } : integer } ) callWorker ( process : integer , formula : 4D.Function {, param {, ...paramN } : integer } ) callWorker ( process : integer , formula : string {, param {, ...paramN } : integer } )   creates or calls the worker process whose name or ID you passed in process and requests the execution of the code designated by formula in its context with the optional param parameter(s)
changeString ( source : string , newChars : string , where : integer ) : string   changes a group of characters in source and returns the resulting string
char ( charCode : integer ) : string   returns the UTF-16 character whose code is charCode
characterCode ( character : string ) : integer   returns the Unicode UTF-16 code (included between 1 and 65535) of character
clearSemaphore( semaphore : string )   erases semaphore previously set by the semaphore command
compareStrings ( aString : string , bString : string { , options : integer } ) : integer   returns a negative, zero, or positive value depending on if aString is evaluated as lower, equal, or higher than bString.
convertFromString ( aString : string , charSetString : string ) : blob convertFromString ( aString : string , charSetInt : integer ) : blob   can be used to convert a string expressed in the current character set to a string expressed in another character set
convertPicture ( aPicture : picture , codec : string ) convertPicture ( aPicture : picture , codec : string , compression : number )   converts aPicture into a new type
convertToString ( aBlob : blob , charSetString : string ) : string convertToString ( aBlob : blob , charSetInt : integer ) : string   converts the text contained in the aBlob parameter and returns it in text expressed in the character set of Qodly
cos ( number : number ) : number    returns the cosine of number, where number is expressed in radians
createThumbnail ( source : picture , dest : picture , width : integer , height : integer , mode : integer , depth : integer )   returns a thumbnail from a given source picture
currentDate : date   returns the current date from the server
currentMethodName : string   returns the method name where it has been invoked
currentProcess : integer   returns the process ID of the process within which this command is called
currentProcessName : string   returns the name of the process within which this command is called
currentTime : time   returns the current time from the server (GMT)
date ( exprString : string ) : date date ( exprDate : date ) : date   evaluates exprString or exprDate and returns a date
dayNumber ( aDate : date ) : integer   returns a number representing the weekday on which aDate falls
dayOf ( aDate : date ) : integer   returns the day of the month of aDate
dec ( number : number ) : number   returns the decimal (fractional) portion of number
delayProcess ( process : integer , duration : number )   delays the execution of process for a duration expressed in number of ticks (1 tick = 1/60th of a second)
deleteString ( source : string , where : integer , numChars : integer ) : string   deletes numChars from source, starting at where, and returns the resulting string
ds : cs.DataStore   returns a reference to the datastore matching the current Qodly database
equalPictures ( picture1 : picture, picture2 : picture, mask : picture ) : boolean   precisely compares both the dimensions and the contents of two pictures
exp ( number : number ) : number   raises the natural log base (e = 2.71828...) by the power of number
false : boolean   returns the boolean value false
file ( path : string ) : 4D.File   creates and returns a new object of the 4D.File type
folder ( path : string ) : 4D.Folder   creates and returns a new object of the 4D.Folder type
formula ( formulaExp : expression ) : 4D.Function   creates a 4D Function object based upon the formulaExp expression
formulaFromString( formulaString : string ) : 4D.Function   creates a 4D.Function object based upon formulaString
generateUUID : string   returns a new 32-character UUID identifier in non-canonical form
generateDigest ( param : any , algorithm : integer {, *}) : string   returns the digest key of a blob or string after application of an encryption algorithm
generatePasswordHash ( password : string , options : object ) : string    returns a secure password hash generated by a cryptographic hash algorithm
getAssertEnabled : boolean   returns true or false according to whether or not assertions are enabled in the current process
getPictureFileName ( aPicture : picture) : string   returns the current default name of the picture passed as parameter
getPictureMetadata ( aPicture : picture , metaName : string , metaContents : variable )   can be used to read the contents of the metadata (or meta-tags) found in aPicture (picture variable)
getProcessActivity: object   returns a snapshot of running processes at a given time
highestProcessNumber : integer   returns the highest alive process number in the Qodly Server
insertString ( source : string , what : string , where : integer ) : string   inserts a string into source and returns the resulting string
instanceOf ( object : object , class : object ) : boolean   returns true if object belongs to class or to one of its child classes, and false otherwise
int ( number : number ) : number   returns the integer portion of number
jsonResolvePointers ( aObject : object , options : object) : object   resolves all the JSON pointers found in the aObject, with regards to options settings (if any)
jsonStringify ( value : any {, *} ) : string   converts the value parameter into a JSON string
jsonValidate ( vJson : object , vSchema : object) : object   checks the compliance of the vJson JSON contents with the rules defined in the vSchema JSON schema
killWorker() killWorker( process : string ) killWorker( process : integer )   posts a message to the worker process whose name or number you passed in process, asking it to ignore any pending messages and to terminate its execution as soon as the current task ends
lastErrors : collection   returns the current stack of errors of the Qodly application as a collection of error objects, or null if no error occurred
length ( aString : string ) : integer   returns the number of characters that are in a aString.
log ( number : number ) : number   returns the natural (Napierian) log of number
lowercase ( aString : string {, *} ) : string   takes aString and returns the string with all alphabetic characters in lowercase
mailConvertFromMIME( mimeblob : blob ) : object mailConvertFromMIME( mimestring : string ) : object   converts a MIME document into a valid email object
mailConvertToMIME( mail : object { , options : object } ) : string   converts an email object into MIME string
matchRegex ( pattern : string , aString : string ) : boolean matchRegex ( pattern : string , aString : string , start : integer {, *} ) : boolean matchRegex ( pattern : string , aString : string , start : integer , pos_found : integer , length_found : integer {, *} ) : boolean   searches for the regular expression pattern in aString
methodCalledOnError( { scope : integer } ) : string   returns the name of the method installed by onErrCall for the current process or the defined scope
milliseconds : integer   returns the number of milliseconds (1000th of a second) elapsed since the server was started
mod ( number1 : integer, number2 : integer) : number   returns the remainder of the integer division of number1 by number2
monthOf ( aDate : date ) : integer   returns the month number of aDate
newCollection {( ...value : any )} : collection    creates a new empty or prefilled collection
newObject {( property : string , value : any {, ...property : string , ...value : any} ) } : object   creates a new empty or prefilled object and returns its reference
newSharedCollection {( ...value : any )} : collection    creates a new empty or prefilled shared collection
newSharedObject {( property : string , value : any {, ...property : string , ...value : any} ) } : object   creates a new empty or prefilled shared object and returns its reference
newSignal { ( description : string ) } : 4D.Signal   creates a 4D.Signal object
not ( aBoolean : boolean ) : boolean   returns the negation of aBoolean, changing true to false or false to true
num ( expression : string {, separator : string } ) : number num ( expression : number ) : number num ( expression : boolean ) : number   returns the numeric form of the string, boolean or numeric expression you pass in expression
objectClass ( object : object ) : object   returns the class of the object passed in parameter
objectCopy ( object : object ) : object objectCopy ( object : object , option : integer ) : object objectCopy ( object : object , option : integer , groupWith : object ) : object objectCopy ( object : object , option : integer , groupWith : collection ) : object   returns an object containing a complete (deep) copy of the properties, sub-objects and values for the object
objectEntries ( object : object ) : collection   returns a collection of objects containing the contents of the object as key / value property pairs
objectIsDefined ( object : object {, property : string } ) : boolean   returns true if object or property is defined, and false otherwise
objectIsEmpty ( object : object ) : boolean   returns true if object is undefined or empty, and false if object is defined (initialized) and contains at least one property
objectIsShared ( object : object ) : boolean objectIsShared ( collection : collection ) : boolean   returns true if object or collection is shareable, and false if it is alterable
objectKeys ( object : object ) : collection   returns a collection of strings containing all of the enumerable property names of the object
objectRemove ( object : object , property : string )   removes property from the object
objectValues ( object : object ) : collection   returns a collection of variants containing all of the enumerable property values of the object
onErrCall( errorMethod : string ) onErrCall( errorMethod : string , scope : integer )   installs the project method, whose name you pass in errorMethod, as the method for catching (trapping) errors for the defined execution context in the current project
pictureProperties ( aPicture : picture , width : number , height : number , hOffset : integer , vOffset : integer , mode : integer )   returns information about the picture you pass in aPicture
pictureSize ( aPicture : picture) : integer   returns the size of aPicture in bytes
pictureToBlob ( aPicture : picture , pictureBlob : blob , codec : string )    converts a picture stored in a variable to another format and places the resulting picture in a blob
position ( find : string , aString : string , start : integer {, *} ) : integer position ( find : string , aString : string , start : integer , lengthFound : integer {, *} ) : integer position ( find : string , aString : string , start : integer , lengthFound : integer , options : integer ) : integer   returns the position of the first occurrence of find in aString
processNumber ( name : string ) : integer processNumber ( id : string ) : integer   returns the number of the process whose name or id you pass in the first parameter
processInfo ( processNumber : integer ) : object   returns an object providing detailed information about process whose number you pass in processNumber
processState ( process : integer ) : integer   returns the state of the process whose number you pass in process
random: integer   returns a random integer value between 0 and 32,767 (inclusive)
replaceString ( source : string , oldString : string , newString : string , howMany : integer {, *}) : string   replaces howMany occurrences of oldString in source with newString
round ( round : number, places : integer) : number   returns number rounded to the number of decimal places specified by places
semaphore ( semaphore : string { , tickCount : integer } ) : boolean   returns true and does nothing if semaphore already exists, or creates semaphore and returns false if it does not exist
session : 4D.Session   returns the Session object corresponding to the current scalable user web session
setAssertEnabled(assertions : boolean { , /* } )   can be used to disable or re-enable any assertions inserted into the Qodly code of the application
setPictureFileName ( aPicture : picture , fileName : string)   sets or changes the default file name for the picture passed as parameter
setPictureMetadata ( aPicture : picture , metaName : string , metaContents : variable )   lets you set or modify the contents of the metadata (or meta-tags) found in the picture (Qodly picture variable), when they are modifiable
setRealComparisonLevel ( epsilon : number )   sets the epsilon value used by Qodly to compare real values and expressions for equality
sin ( number : number ) : number    returns the sine of number, where number is expressed in radians
splitString ( stringToSplit : string , separator : string {, options : integer }) : collection   returns a collection of strings, created by splitting stringToSplit into substrings at the boundaries specified by the separator parameter
squareRoot ( number : number) : number   returns the square root of number
storage : object   returns the catalog of shared objects or shared collections that you have registered in the storage object on the current application
string ( expression : number { , format : string } ) : string string ( expression : any { , format : integer { , addTime : time }} ) : string    returns the string form of the numeric, date, time, string or boolean expression you pass in expression
substring ( source : string , firstChar : integer , numChars : integer ) : string   returns the portion of source defined by firstChar and numChars
tan ( number : number ) : number    returns the tangent of number, where number is expressed in radians
testSemaphore ( semaphore : string ) : boolean   tests for the existence of semaphore
throw( errorCode : integer {, description : string } ) throw( errorObj : object ) throw()   creates an error that will be thrown immediately or when the calling code returns to its caller (deferred mode)
time ( timeString : string ) : time time ( timeValue : integer ) : time   returns a time expression equivalent to the time specified in the timeString or timeValue parameter
timeString ( secondsTime : time ) : string timeString ( secondsValue : integer ) : string   returns the string form of the time expression you pass in secondsTime or secondsValue
timestamp : string   returns the current UTC time in ISO format with milliseconds, i.e. yyyy-MM-ddTHH:mm:ss.SSSZ
trace   to debug your code during the development of an application
true : boolean   returns the boolean value true
trunc ( number : number, places : integer) : number   returns number with its decimal part truncated to the number of decimal places specified by places
uppercase ( aString : string {, *} ) : string   takes aString and returns the string with all alphabetic characters in uppercase.
verifyPasswordHash ( password : string , hash : string ) : boolean    verifies that the given hash matches the given password
webEvent : object   returns an object with information on a triggered event linked to a Page component
webForm : 4D.WebForm    returns a 4D.WebForm proxy object, providing a means to work with and effectively emulates the Page's properties and functions
webServer : 4D.WebServer   returns a Web server object
webServerList : collection    returns a collection of all Web server objects available in the Qodly application
yearOf ( aDate : date ) : integer   returns the year of aDate
zipCreateArchive ( fileToZip : 4D.File , destinationFile : 4D.File ) : object zipCreateArchive ( folderToZip : 4D.Folder , destinationFile : 4D.File { , options : integer }) : object zipCreateArchive ( zipStructure : object , destinationFile : 4D.File ) : object   creates a compressed ZIP archive object and returns the status of the operation
zipReadArchive ( zipFile : 4D.File { , password : string }) : 4D.ZipArchive   retrieves the contents of zipFile and returns it as a 4D.ZipArchive object