Package net.sf.basedb.util.jep.convert

Interface JepConversionFunction<T>

All Known Implementing Classes:
AbsConverter, AbstractJepConversionFunction, AddConverter, AndConverter, ASTConstantConverter, ASTFunNodeConverter, ASTVarNodeConverter, DivideConverter, EqualsConverter, ExpConverter, FloatConverter, GreaterConverter, GreaterEqualsConverter, IfConverter, IntegerConverter, LessConverter, LessEqualsConverter, LogarithmConverter, MultiplyConverter, NaturalLogarithmConverter, NotConverter, NotEqualsConverter, OrConverter, SquareRootConverter, StringConverter, SubtractConverter, UMinusConverter
public interface JepConversionFunction<T>
Convert a built-in JEP function or operation to a Query API Expression or Restriction. Custom function should implement JepExpressionFunction which supports automatic conversion.
Version:
2.4
Author:
nicklas
Last modified
$Date: 2008-09-11 22:08:14 +0200 (to, 11 sep 2008) $

  • Method Summary

    Modifier and Type Method Description
    String getDescription()
    Get a short description of the function or operator
    String getName()
    Get the name of the function or the symbol of the operator
    boolean isFunction()
    If this converter is a built-in function.
    boolean isOperator()
    If this converter is a built-in operator.
    Expression toExpression​(T node)
    Convert the object to an expression.
    Restriction toRestriction​(T node)
    Convert the object to a restriction.

  • Method Details

    • isFunction

      boolean isFunction()
      If this converter is a built-in function. Built-in functions are automatically put in the enumeration return by Jep.getFunctions().
      Returns:
      TRUE if it is a function, FALSE otherwise

    • isOperator

      boolean isOperator()
      If this converter is a built-in operator.
      Returns:
      TRUE if it is an operator, FALSE otherwise

    • getName

      String getName()
      Get the name of the function or the symbol of the operator
      Returns:
      The name or symbol or null

    • getDescription

      String getDescription()
      Get a short description of the function or operator
      Returns:
      The description or null

    • toExpression

      Expression toExpression​(T node)
      Convert the object to an expression.
      Parameters:
      node - The object to convert
      Returns:
      An expression or null
      Throws:
      UnsupportedOperationException - If this converter can't convert to expressions

    • toRestriction

      Restriction toRestriction​(T node)
      Convert the object to a restriction.
      Parameters:
      node - The object to convert
      Returns:
      A restriction or null
      Throws:
      UnsupportedOperationException - If this converter can't convert to restrictions