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src/net/fortuna/ical4j/model/IndexedPropertyList.java@45d57ecba757 (annotated)

src/net/fortuna/ical4j/model/IndexedPropertyList.java

Tue, 10 Feb 2015 19:58:00 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Tue, 10 Feb 2015 19:58:00 +0100

changeset 4

45d57ecba757

permissions

-rw-r--r--

Upgrade the upgraded ical4j component to use org.apache.commons.lang3.

michael@0	1	/**
michael@0	2	* Copyright (c) 2012, Ben Fortuna
michael@0	3	* All rights reserved.
michael@0	4	*
michael@0	5	* Redistribution and use in source and binary forms, with or without
michael@0	6	* modification, are permitted provided that the following conditions
michael@0	7	* are met:
michael@0	8	*
michael@0	9	* o Redistributions of source code must retain the above copyright
michael@0	10	* notice, this list of conditions and the following disclaimer.
michael@0	11	*
michael@0	12	* o Redistributions in binary form must reproduce the above copyright
michael@0	13	* notice, this list of conditions and the following disclaimer in the
michael@0	14	* documentation and/or other materials provided with the distribution.
michael@0	15	*
michael@0	16	* o Neither the name of Ben Fortuna nor the names of any other contributors
michael@0	17	* may be used to endorse or promote products derived from this software
michael@0	18	* without specific prior written permission.
michael@0	19	*
michael@0	20	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
michael@0	21	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
michael@0	22	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
michael@0	23	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
michael@0	24	* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
michael@0	25	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
michael@0	26	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
michael@0	27	* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
michael@0	28	* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
michael@0	29	* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
michael@0	30	* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
michael@0	31	*/
michael@0	32	package net.fortuna.ical4j.model;
michael@0	33
michael@0	34	import java.util.Collections;
michael@0	35	import java.util.HashMap;
michael@0	36	import java.util.Iterator;
michael@0	37	import java.util.Map;
michael@0	38
michael@0	39	/**
michael@0	40	* $Id$
michael@0	41	*
michael@0	42	* Created on 4/02/2006
michael@0	43	*
michael@0	44	* Provides indexing of properties on a specific parameter.
michael@0	45	* @author Ben Fortuna
michael@0	46	*/
michael@0	47	public class IndexedPropertyList {
michael@0	48
michael@0	49	private static final PropertyList EMPTY_LIST = new PropertyList();
michael@0	50
michael@0	51	private Map index;
michael@0	52
michael@0	53	/**
michael@0	54	* Creates a new instance indexed on the parameters with the specified name.
michael@0	55	* @param list a list of properties
michael@0	56	* @param parameterName the name of parameters on which to index
michael@0	57	*/
michael@0	58	public IndexedPropertyList(final PropertyList list, final String parameterName) {
michael@0	59	final Map indexedProperties = new HashMap();
michael@0	60	for (final Iterator i = list.iterator(); i.hasNext();) {
michael@0	61	final Property property = (Property) i.next();
michael@0	62	for (final Iterator j = property.getParameters(parameterName).iterator(); j.hasNext();) {
michael@0	63	final Parameter parameter = (Parameter) j.next();
michael@0	64	PropertyList properties = (PropertyList) indexedProperties.get(parameter.getValue());
michael@0	65	if (properties == null) {
michael@0	66	properties = new PropertyList();
michael@0	67	indexedProperties.put(parameter.getValue(), properties);
michael@0	68	}
michael@0	69	properties.add(property);
michael@0	70	}
michael@0	71	}
michael@0	72	this.index = Collections.unmodifiableMap(indexedProperties);
michael@0	73	}
michael@0	74
michael@0	75	/**
michael@0	76	* Returns a list of properties containing a parameter with the
michael@0	77	* specified value.
michael@0	78	* @param paramValue the value of the parameter contained in the
michael@0	79	* returned properties
michael@0	80	* @return a property list
michael@0	81	*/
michael@0	82	public PropertyList getProperties(final String paramValue) {
michael@0	83	PropertyList properties = (PropertyList) index.get(paramValue);
michael@0	84	if (properties == null) {
michael@0	85	properties = EMPTY_LIST;
michael@0	86	}
michael@0	87	return properties;
michael@0	88	}
michael@0	89
michael@0	90	/**
michael@0	91	* Returns the first property containing a parameter with the specified
michael@0	92	* value.
michael@0	93	* @param paramValue the value of the parameter identified in the returned
michael@0	94	* property
michael@0	95	* @return a property or null if no property is found containing a parameter
michael@0	96	* with the specified value
michael@0	97	*/
michael@0	98	public Property getProperty(final String paramValue) {
michael@0	99	final PropertyList properties = getProperties(paramValue);
michael@0	100	if (!properties.isEmpty()) {
michael@0	101	return (Property) properties.iterator().next();
michael@0	102	}
michael@0	103	return null;
michael@0	104	}
michael@0	105	}