Java tutorial
/******************************************************************************* * Copyright (c) 2010-2014 SAP AG and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * SAP AG - initial API and implementation *******************************************************************************/ package org.eclipse.skalli.core.rest.admin; import java.util.Collections; import java.util.Map; import java.util.Set; import java.util.concurrent.TimeUnit; import javax.xml.bind.DatatypeConverter; import org.apache.commons.lang.StringUtils; import org.apache.commons.lang.math.NumberUtils; import org.eclipse.skalli.commons.CollectionUtils; public class StatisticsQuery { public static final String PARAM_ALL = "all"; //$NON-NLS-1$ public static final String PARAM_PERIOD = "period"; //$NON-NLS-1$ public static final String PARAM_FROM = "from"; //$NON-NLS-1$ public static final String PARAM_TO = "to"; //$NON-NLS-1$ public static final String PARAM_INCLUDE = "include"; //$NON-NLS-1$ public static final String PARAM_EXCLUDE = "exclude"; //$NON-NLS-1$ public static final String PARAM_FILTERS = "filters"; //$NON-NLS-1$ private String unitSymbols = "dDhHmM"; //$NON-NLS-1$ private long period = 0; private long from = 0; private long to = 0; private Set<String> included; private Set<String> excluded; private Set<String> filters; public StatisticsQuery(Map<String, String> params) { this(params, System.currentTimeMillis()); } StatisticsQuery(Map<String, String> params, long now) { if (params.containsKey(PARAM_ALL)) { from = 0; to = 0; } else { period = Math.abs(getTimeInterval(params.get(PARAM_PERIOD))); from = parseDateTime(params.get(PARAM_FROM), now); to = parseDateTime(params.get(PARAM_TO), now); if (from <= 0 && to <= 0) { to = now; from = period != 0 ? to - period : to - TimeUnit.MILLISECONDS.convert(1, TimeUnit.DAYS); } else if (from > 0 && to <= 0) { to = period != 0 ? from + period : now; } else if (from <= 0 && to > 0) { from = period != 0 ? to - period : 0; } else { // both from/to given: ignore period } from = Math.min(now, from); to = Math.min(now, to); if (from > to) { from = to; } } included = CollectionUtils.asSet(StringUtils.split(params.get(PARAM_INCLUDE), ',')); excluded = CollectionUtils.asSet(StringUtils.split(params.get(PARAM_EXCLUDE), ',')); filters = CollectionUtils.asSet(StringUtils.split(params.get(PARAM_FILTERS), ',')); if (filters.contains("summary")) { //$NON-NLS-1$ setFilter("summary"); //$NON-NLS-1$ } } private long getTimeInterval(String param) { long timeInterval = 0; if (StringUtils.isNotBlank(param)) { int defaultValue = 0; TimeUnit unit = TimeUnit.DAYS; char unitSymbol = param.charAt(param.length() - 1); if (unitSymbols.indexOf(unitSymbol) >= 0) { if (unitSymbol == 'h' || unitSymbol == 'H') { unit = TimeUnit.HOURS; } else if (unitSymbol == 'm' || unitSymbol == 'M') { unit = TimeUnit.MINUTES; } param = StringUtils.chop(param); defaultValue = 1; } int value = NumberUtils.toInt(param, defaultValue); if (value != 0) { timeInterval = TimeUnit.MILLISECONDS.convert(value, unit); } } return timeInterval; } private long parseDateTime(String s, long now) { long dateTime = 0; if (StringUtils.isNotBlank(s)) { try { dateTime = DatatypeConverter.parseDateTime(s).getTimeInMillis(); } catch (IllegalArgumentException e) { if ("now".equalsIgnoreCase(s)) { //$NON-NLS-1$ dateTime = now; } else if (s.startsWith("-")) { //$NON-NLS-1$ //check if s is something like "-7d" indicating a time interval long duration = getTimeInterval(s); dateTime = duration < 0 ? now + duration : 0; } } } return dateTime; } public long getFrom() { return from; } public long getTo() { return to; } public void setFilter(String filter) { filters = CollectionUtils.asSet(filter); } public void setSection(String section) { included = CollectionUtils.asSet(section); excluded = Collections.emptySet(); } public Set<String> getIncluded() { return included; } public Set<String> getExcluded() { return excluded; } public boolean showSection(String sectionName) { if (excluded.contains(sectionName)) { return false; } if (included.isEmpty()) { return true; } return included.contains(sectionName); } public boolean showByFilter(String filterName) { return filters.isEmpty() || filters.contains(filterName); } }