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package de.lmu.ifi.dbs.elki.utilities.optionhandling.parameterization;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2012
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import java.util.Collection;
import de.lmu.ifi.dbs.elki.utilities.ClassGenericsUtil;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.InternalParameterizationErrors;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.ParameterException;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.constraints.GlobalParameterConstraint;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameters.Parameter;
/**
* Parameterization handler that doesn't set any parameters.
*
* This is mostly useful for documentation purposes, listing all parameters
* in a non-recursive way.
*
* @author Erich Schubert
*/
public class UnParameterization implements Parameterization {
/**
* Errors
*/
java.util.Vector<ParameterException> errors = new java.util.Vector<ParameterException>();
@Override
public boolean hasUnusedParameters() {
return false;
}
@Override
public boolean checkConstraint(GlobalParameterConstraint constraint) {
return false;
}
@Override
public Collection<ParameterException> getErrors() {
return errors;
}
@Override
public boolean hasErrors() {
return errors.size() > 0;
}
@Override
public boolean grab(Parameter<?, ?> opt) {
return false;
}
@Override
public void reportError(ParameterException e) {
errors.add(e);
}
@Override
public boolean setValueForOption(Parameter<?, ?> opt) throws ParameterException {
return false;
}
@Override
public Parameterization descend(Object option) {
return this;
}
@Override
public <C> C tryInstantiate(Class<C> r, Class<?> c) {
try {
return ClassGenericsUtil.tryInstantiate(r, c, this);
}
catch(Exception e) {
reportError(new InternalParameterizationErrors("Error instantiating internal class: "+c.getName(), e));
return null;
}
}
@Override
public <C> C tryInstantiate(Class<C> c) {
try {
return ClassGenericsUtil.tryInstantiate(c, c, this);
}
catch(Exception e) {
reportError(new InternalParameterizationErrors("Error instantiating internal class: "+c.getName(), e));
return null;
}
}
}
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