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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.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.OptionID;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.ParameterException;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameters.Flag;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameters.Parameter;
import de.lmu.ifi.dbs.elki.utilities.pairs.Pair;
/**
* Parameterization handler using a List and OptionIDs, for programmatic use.
*
* @author Erich Schubert
*/
public class ListParameterization extends AbstractParameterization {
/**
* The actual parameters, for storage
*/
LinkedList<Pair<OptionID, Object>> parameters = new LinkedList<Pair<OptionID, Object>>();
/**
* Default constructor.
*/
public ListParameterization() {
super();
}
/**
* Constructor with an existing collection.
*
* @param dbParameters existing parameter collection
*/
public ListParameterization(Collection<Pair<OptionID, Object>> dbParameters) {
this();
for (Pair<OptionID, Object> pair : dbParameters) {
addParameter(pair.first, pair.second);
}
}
/**
* Add a flag to the parameter list
*
* @param optionid Option ID
*/
public void addFlag(OptionID optionid) {
parameters.add(new Pair<OptionID, Object>(optionid, Flag.SET));
}
/**
* Add a parameter to the parameter list
*
* @param optionid Option ID
* @param value Value
*/
public void addParameter(OptionID optionid, Object value) {
parameters.add(new Pair<OptionID, Object>(optionid, value));
}
/**
* Convenience - add a Flag option directly.
*
* @param flag Flag to add, if set
*/
public void forwardOption(Flag flag) {
if (flag.isDefined() && flag.getValue()) {
addFlag(flag.getOptionID());
}
}
/**
* Convenience - add a Parameter for forwarding
*
* @param param Parameter to add
*/
public void forwardOption(Parameter<?,?> param) {
if (param.isDefined()) {
addParameter(param.getOptionID(), param.getValue());
}
}
@Override
public boolean setValueForOption(Parameter<?,?> opt) throws ParameterException {
Iterator<Pair<OptionID, Object>> iter = parameters.iterator();
while(iter.hasNext()) {
Pair<OptionID, Object> pair = iter.next();
if(pair.first == opt.getOptionID()) {
iter.remove();
opt.setValue(pair.second);
return true;
}
}
return false;
}
/**
* Return the yet unused parameters.
*
* @return Unused parameters.
*/
public List<Pair<OptionID, Object>> getRemainingParameters() {
return parameters;
}
@Override
public boolean hasUnusedParameters() {
return (parameters.size() > 0);
}
/** {@inheritDoc}
* Default implementation, for flat parameterizations.
*/
@Override
public Parameterization descend(Object option) {
return this;
}
@Override
public String toString() {
StringBuffer buf = new StringBuffer();
for (Pair<OptionID, Object> pair : parameters) {
buf.append("-").append(pair.getFirst().toString()).append(" ");
buf.append(pair.getSecond().toString()).append(" ");
}
return buf.toString();
}
/**
* Serialize parameters.
*
* @return Array list of parameters
*/
public ArrayList<String> serialize() {
ArrayList<String> params = new ArrayList<String>();
for (Pair<OptionID, Object> pair : parameters) {
params.add("-" + pair.getFirst().toString());
params.add(pair.getSecond().toString());
}
return params;
}
}
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