001    package biweekly.property;
002    
003    import java.util.List;
004    
005    import biweekly.component.ICalComponent;
006    
007    /*
008     Copyright (c) 2013, Michael Angstadt
009     All rights reserved.
010    
011     Redistribution and use in source and binary forms, with or without
012     modification, are permitted provided that the following conditions are met: 
013    
014     1. Redistributions of source code must retain the above copyright notice, this
015     list of conditions and the following disclaimer. 
016     2. Redistributions in binary form must reproduce the above copyright notice,
017     this list of conditions and the following disclaimer in the documentation
018     and/or other materials provided with the distribution. 
019    
020     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
021     ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
022     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
023     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
024     ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
025     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
026     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
027     ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
028     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
029     SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
030     */
031    
032    /**
033     * Represents a property whose data model consists of a single object (such as a
034     * String).
035     * @author Michael Angstadt
036     * @param <T> the value type (e.g. String)
037     */
038    public class ValuedProperty<T> extends ICalProperty {
039            protected T value;
040    
041            /**
042             * Creates a new valued property.
043             * @param value the property's value
044             */
045            public ValuedProperty(T value) {
046                    setValue(value);
047            }
048    
049            /**
050             * Gets the value of this property.
051             * @return the value
052             */
053            public T getValue() {
054                    return value;
055            }
056    
057            /**
058             * Sets the value of this property.
059             * @param value the value
060             */
061            public void setValue(T value) {
062                    this.value = value;
063            }
064    
065            @Override
066            protected void validate(List<ICalComponent> components, List<String> warnings) {
067                    if (value == null) {
068                            warnings.add("Value is null.");
069                    }
070            }
071    }