diff -r 5ae3e5665a0b -r cc93757aeca3 src/net/fortuna/ical4j/model/IndexedComponentList.java --- a/src/net/fortuna/ical4j/model/IndexedComponentList.java Thu Feb 12 18:02:00 2015 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,105 +0,0 @@ -/** - * Copyright (c) 2012, Ben Fortuna - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * o Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * o Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * o Neither the name of Ben Fortuna nor the names of any other contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ -package net.fortuna.ical4j.model; - -import java.util.Collections; -import java.util.HashMap; -import java.util.Iterator; -import java.util.Map; - -/** - * $Id$ - * - * Created on 4/02/2006 - * - * Provides indexing of components on a specific property. - * @author Ben Fortuna - */ -public class IndexedComponentList { - - private static final ComponentList EMPTY_LIST = new ComponentList(); - - private Map index; - - /** - * Creates a new instance indexed on properties with the specified name. - * @param list a list of components - * @param propertyName the name of the properties to index on - */ - public IndexedComponentList(final ComponentList list, final String propertyName) { - final Map indexedComponents = new HashMap(); - for (final Iterator i = list.iterator(); i.hasNext();) { - final Component component = (Component) i.next(); - for (final Iterator j = component.getProperties(propertyName).iterator(); j.hasNext();) { - final Property property = (Property) j.next(); - ComponentList components = (ComponentList) indexedComponents.get(property.getValue()); - if (components == null) { - components = new ComponentList(); - indexedComponents.put(property.getValue(), components); - } - components.add(component); - } - } - this.index = Collections.unmodifiableMap(indexedComponents); - } - - /** - * Returns a list of components containing a property with the - * specified value. - * @param propertyValue the value of the property contained in the - * returned components - * @return a component list - */ - public ComponentList getComponents(final String propertyValue) { - ComponentList components = (ComponentList) index.get(propertyValue); - if (components == null) { - components = EMPTY_LIST; - } - return components; - } - - /** - * Returns the first component containing a property with the specified - * value. - * @param propertyValue the value of the property identified in the returned - * component - * @return a component or null if no component is found containing a property - * with the specified value - */ - public Component getComponent(final String propertyValue) { - final ComponentList components = getComponents(propertyValue); - if (!components.isEmpty()) { - return (Component) components.iterator().next(); - } - return null; - } -}