/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.marmotta.kiwi.model.rdf;
import org.apache.marmotta.commons.util.DateUtils;
import org.openrdf.model.Literal;
import javax.xml.datatype.DatatypeConfigurationException;
import javax.xml.datatype.DatatypeFactory;
import javax.xml.datatype.XMLGregorianCalendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.TimeZone;
/**
* Add file description here!
* <p/>
* Author: Sebastian Schaffert
*/
public class KiWiDateLiteral extends KiWiStringLiteral {
private static final long serialVersionUID = -7710255732571214481L;
private Date dateContent;
private static DatatypeFactory dtf;
static {
try {
dtf = DatatypeFactory.newInstance();
} catch (DatatypeConfigurationException e) {
}
}
public KiWiDateLiteral() {
super();
}
public KiWiDateLiteral(Date dateContent, KiWiUriResource type) {
super(DateUtils.getXMLCalendar(DateUtils.getDateWithoutFraction(dateContent)).toXMLFormat(),null,type);
setDateContent(dateContent);
}
public Date getDateContent() {
return new Date(dateContent.getTime());
}
public void setDateContent(Date dateContent) {
this.dateContent = DateUtils.getDateWithoutFraction(dateContent);
this.content = DateUtils.getXMLCalendar(this.dateContent).toXMLFormat();
}
/**
* Return the content of the literal, using the parametrized Java type
*
* @return
*/
@Override
public String getContent() {
return DateUtils.getXMLCalendar(dateContent).toXMLFormat();
}
/**
* Set the content of the literal to the content provided as parameter.
*
* @param content
*/
@Override
public void setContent(String content) {
setDateContent(DateUtils.parseDate(content));
}
/**
* Gets the label of this literal.
*
* @return The literal's label.
*/
@Override
public String getLabel() {
return calendarValue().toXMLFormat();
}
/**
* Returns the {@link javax.xml.datatype.XMLGregorianCalendar} value of this literal. A calendar
* representation can be given for literals whose label conforms to the
* syntax of the following <a href="http://www.w3.org/TR/xmlschema-2/">XML
* Schema datatypes</a>: <tt>dateTime</tt>, <tt>time</tt>,
* <tt>date</tt>, <tt>gYearMonth</tt>, <tt>gMonthDay</tt>,
* <tt>gYear</tt>, <tt>gMonth</tt> or <tt>gDay</tt>.
*
* @return The calendar value of the literal.
* @throws IllegalArgumentException If the literal cannot be represented by a
* {@link javax.xml.datatype.XMLGregorianCalendar}.
*/
@Override
public XMLGregorianCalendar calendarValue() {
GregorianCalendar cal = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
cal.setTime(getDateContent());
XMLGregorianCalendar xml_cal = dtf.newXMLGregorianCalendar(cal).normalize();
xml_cal.setTimezone(0);
return xml_cal;
}
/**
* A separate equalsContent method for checking whether literals are equal in their content; we cannot override
* the .equals function with this because it would break the system in cases where the same content is used in
* different literals.
*
* @param o
* @return
*/
@Override
public boolean equals(Object o) {
if (this == o) return true;
if(o instanceof Literal) {
Literal that = (Literal)o;
if(!(this.getDatatype().equals(that.getDatatype()))) return false;
return calendarValue().toGregorianCalendar().getTime().getTime() == that.calendarValue().toGregorianCalendar().getTime().getTime();
}
return false;
}
}