Interface FunctionRegister

public interface FunctionRegister
A factory of org​.opengis​.filter functions identified by their names. Each factory can provide an arbitrary number of functions, enumerated by get­Names(). The Default­Filter­Factory​.function(String, Expression[]) method delegates to this interface for creating the function implementation for a given name.
Since:
1.5
See Also:

  • Method Summary

    Modifier and Type
    Method
    Description
    <R> Expression<R,?>
    create(String name, Expression<R,?>[] parameters)
    Creates a new function of the given name with the given parameters.
    String
    get­Authority()
    Returns the name of the standard or authority defining the functions.
    Set<String>
    get­Names()
    Returns the names of all functions that this factory can create.

  • Method Details

    • getAuthority

      String getAuthority()
      Returns the name of the standard or authority defining the functions.
      Returns:
      provider of function definitions.

    • getNames

      Set<String> getNames()
      Returns the names of all functions that this factory can create.
      Returns:
      set of supported function names.

    • create

      <R> Expression<R,?> create(String name, Expression<R,?>[] parameters) throws IllegalArgumentException
      Creates a new function of the given name with the given parameters.
      Type Parameters:
      R - the type of resources (e.g. Feature) used as inputs.
      Parameters:
      name - case-sensitive name of the function to create as an expression.
      parameters - function parameters.
      Returns:
      function for the given name and parameters.
      Throws:
      Illegal­Argument­Exception - if function name is unknown or some parameters are illegal.