Java tutorial
/* * JABM - Java Agent-Based Modeling Toolkit * Copyright (C) 2013 Steve Phelps * * 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 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 General Public License for more details. */ package net.sourceforge.jabm.report; import java.io.Serializable; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import org.apache.commons.math3.stat.Frequency; import org.jfree.data.category.CategoryDataset; import org.jfree.data.general.AbstractDataset; @SuppressWarnings("rawtypes") public class CategoryDatasetFrequencyAdaptor extends AbstractDataset implements CategoryDataset, Serializable { protected Frequency frequency; public static final String ROW = "frequency"; protected HashMap<String, Integer> columnMap; protected HashMap<String, Comparable<?>> objectMap; protected ArrayList<String> columns; public CategoryDatasetFrequencyAdaptor(Frequency frequency) { super(); this.frequency = frequency; updateCategories(); } public void updateCategories() { columnMap = new HashMap<String, Integer>(); objectMap = new HashMap<String, Comparable<?>>(); columns = new ArrayList<String>(); Iterator<Comparable<?>> it = frequency.valuesIterator(); int i = 0; while (it.hasNext()) { Comparable<?> value = it.next(); objectMap.put(value.toString(), value); columns.add(i, value.toString()); columnMap.put(value.toString(), i); i++; } } public void clear() { frequency.clear(); columnMap.clear(); objectMap.clear(); columns.clear(); } public void fireDatasetChanged() { super.fireDatasetChanged(); } public int getColumnIndex(Comparable key) { return columnMap.get(key); } public Comparable getColumnKey(int column) { return columns.get(column); } public List getColumnKeys() { return columns; } public int getRowIndex(Comparable key) { return 0; } public Comparable getRowKey(int row) { return ROW; } @SuppressWarnings("unchecked") public List getRowKeys() { ArrayList result = new ArrayList(); result.add(ROW); return result; } public Number getValue(Comparable rowKey, Comparable columnKey) { Integer column = (Integer) columnKey; String columnName = columns.get(column); return frequency.getCount(objectMap.get(columnName)); } public int getColumnCount() { return columns.size(); } public int getRowCount() { return 1; } public Number getValue(int row, int column) { return getValue(null, column); } }