org.apache.marmotta.kiwi.model.rdf.KiWiDateLiteral.java Source code

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Here is the source code for org.apache.marmotta.kiwi.model.rdf.KiWiDateLiteral.java

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/**
 * 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.apache.marmotta.commons.vocabulary.XSD;
import org.joda.time.DateTime;
import org.joda.time.format.ISODateTimeFormat;
import org.openrdf.model.Literal;

import javax.xml.datatype.DatatypeConfigurationException;
import javax.xml.datatype.DatatypeFactory;
import javax.xml.datatype.XMLGregorianCalendar;
import java.util.Date;

/**
 * Add file description here!
 * <p/>
 * Author: Sebastian Schaffert
 */
public class KiWiDateLiteral extends KiWiStringLiteral {

    private static final long serialVersionUID = -7710255732571214481L;

    private DateTime dateContent;

    private static DatatypeFactory dtf;
    static {
        try {
            dtf = DatatypeFactory.newInstance();
        } catch (DatatypeConfigurationException e) {
        }
    }

    public KiWiDateLiteral() {
        super();
    }

    public KiWiDateLiteral(DateTime dateContent, KiWiUriResource type) {
        super(DateUtils.getXMLCalendar(dateContent.withMillisOfSecond(0)).toXMLFormat(), null, type);
        setDateContent(dateContent);
    }

    public KiWiDateLiteral(DateTime dateContent, KiWiUriResource type, Date created) {
        super(DateUtils.getXMLCalendar(dateContent.withMillisOfSecond(0)).toXMLFormat(), null, type, created);
        setDateContent(dateContent);
    }

    public DateTime getDateContent() {
        return dateContent;
    }

    public void setDateContent(DateTime dateContent) {
        this.dateContent = dateContent.withMillisOfSecond(0);
        if (XSD.DateTime.equals(getDatatype())) {
            this.content = DateUtils.getXMLCalendar(this.dateContent).toXMLFormat();
        } else if (XSD.Date.equals(getDatatype())) {
            this.content = ISODateTimeFormat.date().print(dateContent);
        } else if (XSD.Time.equals(getDatatype())) {
            this.content = ISODateTimeFormat.time().print(dateContent);
        }
    }

    /**
     * Return the content of the literal, using the parametrized Java type
     *
     * @return
     */
    @Override
    public String getContent() {
        if (XSD.DateTime.equals(getDatatype())) {
            return DateUtils.getXMLCalendar(this.dateContent).toXMLFormat();
        } else if (XSD.Date.equals(getDatatype())) {
            return ISODateTimeFormat.date().print(dateContent);
        } else if (XSD.Time.equals(getDatatype())) {
            return ISODateTimeFormat.time().print(dateContent);
        } else {
            return DateUtils.getXMLCalendar(this.dateContent).toXMLFormat();
        }
    }

    /**
     * Set the content of the literal to the content provided as parameter.
     *
     * @param content
     */
    @Override
    public void setContent(String content) {
        setDateContent(ISODateTimeFormat.dateTimeParser().parseDateTime(content));
    }

    /**
     * Gets the label of this literal.
     *
     * @return The literal's label.
     */
    @Override
    public String getLabel() {
        return getContent();
    }

    /**
     * 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() {
        return DateUtils.getXMLCalendar(dateContent);
    }

    /**
     * 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;
    }

}