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///////////////////////////////////////////////////////////////////////////////
// For information as to what this class does, see the Javadoc, below. //
// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, //
// 2007, 2008, 2009, 2010, 2014, 2015, 2022 by Peter Spirtes, Richard //
// Scheines, Joseph Ramsey, and Clark Glymour. //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation; either version 2 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 General Public License for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program; if not, write to the Free Software //
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA //
///////////////////////////////////////////////////////////////////////////////
package edu.cmu.tetrad.data;
import edu.cmu.tetrad.graph.Node;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.util.AbstractList;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
/**
* Stores a list of data models and keeps track of which one is selected.
*
* @author josephramsey
* @see DataModel
*/
public final class DataModelList extends AbstractList
implements DataModel {
private static final long serialVersionUID = 23L;
/**
* The list of models.
*
* @serial
*/
private List modelList = new LinkedList<>();
/**
* The selected model (may be null).
*
* @serial
*/
private DataModel selectedModel;
/**
* The name of the DataModelList.
*
* @serial
*/
private String name;
/**
* The knowledge for this data.
*
* @serial
*/
private Knowledge knowledge = new Knowledge();
public DataModelList() {
}
public DataModelList(DataModelList dataModelList) {
try {
throw new NullPointerException();
} catch (Exception e) {
e.printStackTrace();
}
this.modelList = new ArrayList<>(dataModelList);
this.selectedModel = dataModelList.selectedModel;
this.name = dataModelList.name;
this.knowledge = dataModelList.knowledge.copy();
}
/**
* Generates a simple exemplar of this class to test serialization.
*/
public static DataModelList serializableInstance() {
return new DataModelList();
}
/**
* @return this model, as an Object.
*/
public DataModel get(int index) {
return this.modelList.get(index);
}
/**
* @return the size of the getModel list. Required for AbstractList.
*/
@Override
public int size() {
return this.modelList.size();
}
public List getVariables() {
if (getSelectedModel() == null) {
throw new NullPointerException();
}
return getSelectedModel().getVariables();
}
public Knowledge getKnowledge() {
return this.knowledge.copy();
}
public void setKnowledge(Knowledge knowledge) {
if (knowledge == null) {
throw new NullPointerException();
}
this.knowledge = knowledge.copy();
}
/**
* @return the list of variable names for columns, in order.
*/
public List getVariableNames() {
if (getSelectedModel() == null) {
throw new NullPointerException();
}
return getSelectedModel().getVariableNames();
}
/**
* Adds the given DataModel to the list at the given index. Required for AbstractList.
*
* @param index the index at which the DataModel is to be added.
* @param element the DataModel to be added. (Note that this must be a DataModel.)
*/
public void add(int index, DataModel element) {
this.modelList.add(index, element);
}
/**
* Check if the modeList is empty Need to override this since this class is extending AbstractList.
*/
@Override
public boolean isEmpty() {
return this.modelList.isEmpty();
}
/**
* Use this to check if the dataModelList only contains the default empty dataset that is being used to populat the
* empty spreadsheet - Added by Kevin
*/
public boolean containsEmptyData() {
if (this.modelList.isEmpty()) {
return true;
} else {
return this.modelList.get(0).getVariableNames().isEmpty();
}
}
public List getModelList() {
return this.modelList;
}
/**
* Removes the DataModel at the given index. Required for AbstractList. Required for AbstractList.
*
* @param index the index of the DataModel to remove.
* @return the DataModel just removed.
*/
public DataModel remove(int index) {
DataModel removedObject = this.modelList.remove(index);
if (removedObject == this.selectedModel) {
this.selectedModel = null;
}
return removedObject;
}
/**
* @return the model that is currently selected. The default is the first model. If there are no models in the list,
* null is returned.
*/
public DataModel getSelectedModel() {
if (this.selectedModel != null) {
return this.selectedModel;
} else if (this.modelList.size() > 0) {
return this.modelList.get(0);
} else {
return null;
}
}
public void setSelectedModel(DataModel model) {
if (model == null) {
throw new NullPointerException();
}
if (this.modelList.contains(model)) {
this.selectedModel = model;
}
}
/**
* Gets the name of the data model list.
*/
public String getName() {
return this.name;
}
/**
* Sets the name of the data model list..
*/
public void setName(String name) {
this.name = name;
}
/**
* @return a string representation of the data model list.
*/
public String toString() {
StringBuilder buf = new StringBuilder();
buf.append("Data Model List <");
for (Object aModelList : this.modelList) {
buf.append(aModelList).append(", ");
}
buf.append(">");
return buf.toString();
}
@Override
public boolean isContinuous() {
return false;
}
@Override
public boolean isDiscrete() {
return false;
}
@Override
public boolean isMixed() {
return false;
}
@Override
public Node getVariable(String name) {
return null;
}
@Override
public DataModel copy() {
return null;
}
public int hashCode() {
int hashcode = 17;
hashcode += 17 * this.name.hashCode();
return hashcode;
}
public boolean equals(Object o) {
if (o == null) {
return false;
}
if (!(o instanceof DataModelList)) {
return false;
}
DataModelList list = (DataModelList) o;
return this.name.equals(list.name) && this.modelList.equals(list.modelList) && this.knowledge.equals(list.knowledge) && this.selectedModel.equals(list.selectedModel);
}
/**
* Adds semantic checks to the default deserialization method. This method must have the standard signature for a
* readObject method, and the body of the method must begin with "s.defaultReadObject();". Other than that, any
* semantic checks can be specified and do not need to stay the same from version to version. A readObject method of
* this form may be added to any class, even if Tetrad sessions were previously saved out using a version of the
* class that didn't include it. (That's what the "s.defaultReadObject();" is for. See J. Bloch, Effective Java, for
* help.
*/
private void readObject(ObjectInputStream s)
throws IOException, ClassNotFoundException {
s.defaultReadObject();
if (this.modelList == null) {
throw new NullPointerException();
}
if (this.knowledge == null) {
throw new NullPointerException();
}
}
}
