org.esa.beam.framework.param
Class AbstractParamValidator

java.lang.Object
  org.esa.beam.framework.param.AbstractParamValidator

All Implemented Interfaces:

ParamValidator

Direct Known Subclasses:

BooleanValidator, ColorValidator, DateValidator, FileValidator, NumberValidator, StringArrayValidator, StringValidator

public abstract class AbstractParamValidator
extends Object
implements ParamValidator

The AbstractParamValidator acts as a base class for implementations of ParamValidator interface by providing some default method implementations and several utility methods for common validators.

Version:

$Revision$ $Date$

Author:

Norman Fomferra

See Also:

ParamValidator

Field Summary

protected Logger

_logger

Constructor Summary

protected

AbstractParamValidator()

Method Summary

boolean	equalValues(Parameter parameter, Object value1, Object value2) Tests if the given two values are equal taking the given parameter information into account.
protected static boolean	isAllowedNullText(Parameter parameter, String text) Tests if the given text is an allowed zero-length text string for the given parameter.
protected static boolean	isAllowedNullValue(Parameter parameter, Object value) Tests if the given object is an allowed null value for the given parameter.
protected boolean	isValueContainedInValueSet(Parameter parameter, Object value) Tests if the value passed in is containe in the value set defined by the Parameter passed as argument.
protected void	validateThatNullValueIsAllowed(Parameter parameter, Object value) Tests if the value passed in is null, and if so, if this is an allowed value defined by the parameter.
protected void	validateThatValueIsInValueSet(Parameter parameter, Object value) Checks if a value object is contained in the valueset defined by the parameter.
protected void	validateThatValuesAreInValueSet(Parameter parameter, Object[] values) Checks if a vector of value objects is contained in the valueset defined bay the parameter.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.esa.beam.framework.param.ParamValidator

format, parse, validate

Field Detail

_logger

protected Logger _logger

Constructor Detail

AbstractParamValidator

protected AbstractParamValidator()

Method Detail

equalValues

public boolean equalValues(Parameter parameter,
                           Object value1,
                           Object value2)

Description copied from interface: ParamValidator

Tests if the given two values are equal taking the given parameter information into account.

Specified by:

equalValues in interface ParamValidator

Parameters:

parameter - the parameter, must not be null

value1 - the first value, can be null

value2 - the second value, can also be null

Returns:

true if the value are equal, false otherwise

validateThatNullValueIsAllowed

protected void validateThatNullValueIsAllowed(Parameter parameter,
                                              Object value)
                                       throws ParamValidateException

Tests if the value passed in is null, and if so, if this is an allowed value defined by the parameter. When this is not the case, the errorhandle passed in is invoked.

Parameters:

parameter - the Parameter defining the null value behaviour

value - the value to be checked

Throws:

ParamValidateException

validateThatValuesAreInValueSet

protected void validateThatValuesAreInValueSet(Parameter parameter,
                                               Object[] values)
                                        throws ParamValidateException

Checks if a vector of value objects is contained in the valueset defined bay the parameter. If not, the error handler passed in is invoked.

Parameters:

parameter - the Parameter defining the valueset

values - vector of objects to be checked

Throws:

ParamValidateException

validateThatValueIsInValueSet

protected void validateThatValueIsInValueSet(Parameter parameter,
                                             Object value)
                                      throws ParamValidateException

Checks if a value object is contained in the valueset defined by the parameter. If not, the error handler passed in is invoked.

Parameters:

parameter - the Parameter defining the valueset

value - object to be checked

Throws:

ParamValidateException

isValueContainedInValueSet

protected boolean isValueContainedInValueSet(Parameter parameter,
                                             Object value)

Tests if the value passed in is containe in the value set defined by the Parameter passed as argument.

Parameters:

parameter - the parameter whose value set is to be checked

value - the value to be checked

isAllowedNullText

protected static boolean isAllowedNullText(Parameter parameter,
                                           String text)

Tests if the given text is an allowed zero-length text string for the given parameter.

Parameters:

parameter - the parameter

text - the text to test

Returns:

true if so

isAllowedNullValue

protected static boolean isAllowedNullValue(Parameter parameter,
                                            Object value)

Tests if the given object is an allowed null value for the given parameter.

Parameters:

parameter - the parameter

value - the value to test

Returns:

true if so