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

Class AbstractJepConversionFunction<T>

java.lang.Object

net.sf.basedb.util.jep.convert.AbstractJepConversionFunction<T>

All Implemented Interfaces:

JepConversionFunction<T>

Direct Known Subclasses:

AbsConverter, 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 abstract class AbstractJepConversionFunction<T>
extends Object
implements JepConversionFunction<T>

Abstract superclass implementing the JepConversionFunction interface. This class throws an UnsupportedOperationException for the toExpression(Object) and toRestriction(Object) methods. A subclass should override at least one of the methods.

Version:

2.4

Author:

nicklas

Last modified

$Date: 2012-09-14 09:28:35 +0200 (fr, 14 sep 2012) $

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractJepConversionFunction()

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 to a restriction and then use Expressions.bool(Restriction) to create a boolean expression.
Restriction	toRestriction(T node)	Convert the object to a restriction.

Methods inherited from class java.lang.Object

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

Constructor Details

AbstractJepConversionFunction

protected AbstractJepConversionFunction()

Method Details

isFunction

public boolean isFunction()

Description copied from interface: JepConversionFunction

If this converter is a built-in function. Built-in functions are automatically put in the enumeration return by Jep.getFunctions().

Specified by:

isFunction in interface JepConversionFunction<T>

Returns:

Always FALSE

isOperator

public boolean isOperator()

Description copied from interface: JepConversionFunction

If this converter is a built-in operator.

Specified by:

isOperator in interface JepConversionFunction<T>

Returns:

Always FALSE

getName

public String getName()

Description copied from interface: JepConversionFunction

Get the name of the function or the symbol of the operator

Specified by:

getName in interface JepConversionFunction<T>

Returns:

Always null

getDescription

public String getDescription()

Description copied from interface: JepConversionFunction

Get a short description of the function or operator

Specified by:

getDescription in interface JepConversionFunction<T>

Returns:

Always null

toExpression

public Expression toExpression(T node)

Convert to a restriction and then use Expressions.bool(Restriction) to create a boolean expression.

Specified by:

toExpression in interface JepConversionFunction<T>

Parameters:

node - The object to convert

Returns:

An expression or null

toRestriction

public Restriction toRestriction(T node)

Description copied from interface: JepConversionFunction

Convert the object to a restriction.

Specified by:

toRestriction in interface JepConversionFunction<T>

Parameters:

node - The object to convert

Returns:

A restriction or null

Throws:

UnsupportedOperationException - Always