/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2011, Open Source Geospatial Foundation (OSGeo)
* (C) 2004-2005, Open Geospatial Consortium Inc.
*
* All Rights Reserved. http://www.opengis.org/legal/
*/
package org.opengis.metadata.identification;
import java.util.Collection;
import org.opengis.util.InternationalString;
import org.opengis.metadata.citation.Citation;
import org.opengis.annotation.UML;
import static org.opengis.annotation.Obligation.*;
import static org.opengis.annotation.Specification.*;
/**
* Keywords, their type and reference source.
*
*
* @source $URL: http://svn.osgeo.org/geotools/branches/2.7.x/modules/library/opengis/src/main/java/org/opengis/metadata/identification/Keywords.java $
* @version <A HREF="http://www.opengeospatial.org/standards/as#01-111">ISO 19115</A>
* @author Martin Desruisseaux (IRD)
* @since GeoAPI 2.0
*/
@UML(identifier="MD_Keywords", specification=ISO_19115)
public interface Keywords {
/**
* Commonly used word(s) or formalised word(s) or phrase(s) used to describe the subject.
*
* @return Word(s) or phrase(s) used to describe the subject.
*/
@UML(identifier="keyword", obligation=MANDATORY, specification=ISO_19115)
Collection<? extends InternationalString> getKeywords();
/**
* Subject matter used to group similar keywords.
*
* @return Subject matter used to group similar keywords, or {@code null}.
*/
@UML(identifier="type", obligation=OPTIONAL, specification=ISO_19115)
KeywordType getType();
/**
* Name of the formally registered thesaurus or a similar authoritative source of keywords.
*
* @return Name of registered thesaurus or similar authoritative source of keywords, or {@code null}.
*/
@UML(identifier="thesaurusName", obligation=OPTIONAL, specification=ISO_19115)
Citation getThesaurusName();
}