Package util

Class FunctionManager

java.lang.Object
util.FunctionManager
public class FunctionManager
extends java.lang.Object
Author:
JIBOYE OLUWAGBEMIRO OLAOLUWA

  • Field Summary

    Fields 
    Modifier and Type Field Description
    static java.util.Map<java.lang.String,​Function> FUNCTIONS  

  • Constructor Summary

    Constructors 
    Constructor Description
    FunctionManager()  

  • Method Summary

    Modifier and Type Method Description
    static Function add​(java.lang.String expression)
    Adds a Function object to this FunctionManager.
    static void add​(Function f)  
    static void clearAnonymousFunctions()
    Deletes all anonymous functions
    static boolean contains​(java.lang.String fName)  
    static int countAnonymousFunctions()  
    static void delete​(java.lang.String fName)
    Removes a Function object from this FunctionManager.
    static java.util.ArrayList<Function> getDefinedFunctions()  
    static Function getFunction​(java.lang.String fName)  
    static void initializeFunctionVars()
    Registers the parameters of all registered functions as Variables on the Variable Registry.
    static void load​(java.util.Map<java.lang.String,​Function> functions)
    Loads the Function objects in this Map into the FUNCTIONS Map.
    static void load​(java.util.Map<java.lang.String,​Function> functions, boolean clearFirst)
    Loads the Function objects in this Map into the FUNCTIONS Map.
    static Function lookUp​(java.lang.String functionName)
    Attempts to retrieve a Function object from a FunctionManager based on its name.
    static void update()
    Saves stored functions and: updates the client UIs that use this manager.
    static void update​(java.lang.String expression)
    Updates a Function object in this FunctionManager.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • FUNCTIONS

      public static final java.util.Map<java.lang.String,​Function> FUNCTIONS

  • Constructor Details

  • Method Details

    • contains

      public static boolean contains​(java.lang.String fName)
      Parameters:
      fName - The name of the dependent variable of the function or the full name of the function which is a combination of the name of its dependent variable and its independent variables enclosed in circular parentheses. e.g in y = x^3, either y or y(x) may be supplied.
      Returns:
      true if a Function exists by the name supplied.

    • getFunction

      public static Function getFunction​(java.lang.String fName)
      Parameters:
      fName - The name of the dependent variable of the function.
      Returns:
      the Function object that has the name supplied if it exists. If no such Function object exists, then it returns null.

    • lookUp

      public static Function lookUp​(java.lang.String functionName)
      Attempts to retrieve a Function object from a FunctionManager based on its name.
      Parameters:
      functionName - The name of the Function object.
      Returns:
      the Function object that has that name or null if the Function is not found.

    • add

      public static Function add​(java.lang.String expression)
      Adds a Function object to this FunctionManager.
      Parameters:
      expression - The expression that creates the Function to add. The form is:F=@(x,y,z,...)mathexpr. e.g y=@(x)3x-x^2; Functions take precedence over variables.. so if a function called sin_func is created and there exists a variable with that name, the system discards that variable

    • add

      public static void add​(Function f)
      Parameters:
      f - The Function object to add to this object.

    • load

      public static void load​(java.util.Map<java.lang.String,​Function> functions)
      Loads the Function objects in this Map into the FUNCTIONS Map.
      Parameters:
      functions - A Map of Function objects.

    • load

      public static void load​(java.util.Map<java.lang.String,​Function> functions, boolean clearFirst)
      Loads the Function objects in this Map into the FUNCTIONS Map.
      Parameters:
      functions - A Map of Function objects.
      clearFirst - If true, then the FUNCTIONS is cleared first before new content is loaded into it.

    • delete

      public static void delete​(java.lang.String fName)
      Removes a Function object from this FunctionManager.

    • update

      public static void update​(java.lang.String expression)
      Updates a Function object in this FunctionManager.

    • clearAnonymousFunctions

      public static void clearAnonymousFunctions()
      Deletes all anonymous functions

    • countAnonymousFunctions

      public static int countAnonymousFunctions()
      Returns:
      the number of anonymous functions in the FunctionManager.

    • getDefinedFunctions

      public static final java.util.ArrayList<Function> getDefinedFunctions()
      Returns:
      An ArrayList of all non-anonymous functions.

    • update

      public static void update()
      Saves stored functions and: updates the client UIs that use this manager.

    • initializeFunctionVars

      public static void initializeFunctionVars()
      Registers the parameters of all registered functions as Variables on the Variable Registry.