| /* |
| * 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.nutch.metadata; |
| |
| /** |
| * A collection of Dublin Core metadata names. |
| * |
| * @see <a href="http://dublincore.org">dublincore.org</a> |
| * |
| * @author Chris Mattmann |
| * @author Jérôme Charron |
| */ |
| public interface DublinCore { |
| |
| /** |
| * Typically, Format may include the media-type or dimensions of the resource. |
| * Format may be used to determine the software, hardware or other equipment |
| * needed to display or operate the resource. Examples of dimensions include |
| * size and duration. Recommended best practice is to select a value from a |
| * controlled vocabulary (for example, the list of Internet Media Types [MIME] |
| * defining computer media formats). |
| */ |
| public static final String FORMAT = "format"; |
| |
| /** |
| * Recommended best practice is to identify the resource by means of a string |
| * or number conforming to a formal identification system. Example formal |
| * identification systems include the Uniform Resource Identifier (URI) |
| * (including the Uniform Resource Locator (URL)), the Digital Object |
| * Identifier (DOI) and the International Standard Book Number (ISBN). |
| */ |
| public static final String IDENTIFIER = "identifier"; |
| |
| /** |
| * Date on which the resource was changed. |
| */ |
| public static final String MODIFIED = "modified"; |
| |
| /** |
| * An entity responsible for making contributions to the content of the |
| * resource. Examples of a Contributor include a person, an organisation, or a |
| * service. Typically, the name of a Contributor should be used to indicate |
| * the entity. |
| */ |
| public static final String CONTRIBUTOR = "contributor"; |
| |
| /** |
| * The extent or scope of the content of the resource. Coverage will typically |
| * include spatial location (a place name or geographic coordinates), temporal |
| * period (a period label, date, or date range) or jurisdiction (such as a |
| * named administrative entity). Recommended best practice is to select a |
| * value from a controlled vocabulary (for example, the Thesaurus of |
| * Geographic Names [TGN]) and that, where appropriate, named places or time |
| * periods be used in preference to numeric identifiers such as sets of |
| * coordinates or date ranges. |
| */ |
| public static final String COVERAGE = "coverage"; |
| |
| /** |
| * An entity primarily responsible for making the content of the resource. |
| * Examples of a Creator include a person, an organisation, or a service. |
| * Typically, the name of a Creator should be used to indicate the entity. |
| */ |
| public static final String CREATOR = "creator"; |
| |
| /** |
| * A date associated with an event in the life cycle of the resource. |
| * Typically, Date will be associated with the creation or availability of the |
| * resource. Recommended best practice for encoding the date value is defined |
| * in a profile of ISO 8601 [W3CDTF] and follows the YYYY-MM-DD format. |
| */ |
| public static final String DATE = "date"; |
| |
| /** |
| * An account of the content of the resource. Description may include but is |
| * not limited to: an abstract, table of contents, reference to a graphical |
| * representation of content or a free-text account of the content. |
| */ |
| public static final String DESCRIPTION = "description"; |
| |
| /** |
| * A language of the intellectual content of the resource. Recommended best |
| * practice is to use RFC 3066 [RFC3066], which, in conjunction with ISO 639 |
| * [ISO639], defines two- and three-letter primary language tags with optional |
| * subtags. Examples include "en" or "eng" for English, "akk" for Akkadian, |
| * and "en-GB" for English used in the United Kingdom. |
| */ |
| public static final String LANGUAGE = "language"; |
| |
| /** |
| * An entity responsible for making the resource available. Examples of a |
| * Publisher include a person, an organisation, or a service. Typically, the |
| * name of a Publisher should be used to indicate the entity. |
| */ |
| public static final String PUBLISHER = "publisher"; |
| |
| /** |
| * A reference to a related resource. Recommended best practice is to |
| * reference the resource by means of a string or number conforming to a |
| * formal identification system. |
| */ |
| public static final String RELATION = "relation"; |
| |
| /** |
| * Information about rights held in and over the resource. Typically, a Rights |
| * element will contain a rights management statement for the resource, or |
| * reference a service providing such information. Rights information often |
| * encompasses Intellectual Property Rights (IPR), Copyright, and various |
| * Property Rights. If the Rights element is absent, no assumptions can be |
| * made about the status of these and other rights with respect to the |
| * resource. |
| */ |
| public static final String RIGHTS = "rights"; |
| |
| /** |
| * A reference to a resource from which the present resource is derived. The |
| * present resource may be derived from the Source resource in whole or in |
| * part. Recommended best practice is to reference the resource by means of a |
| * string or number conforming to a formal identification system. |
| */ |
| public static final String SOURCE = "source"; |
| |
| /** |
| * The topic of the content of the resource. Typically, a Subject will be |
| * expressed as keywords, key phrases or classification codes that describe a |
| * topic of the resource. Recommended best practice is to select a value from |
| * a controlled vocabulary or formal classification scheme. |
| */ |
| public static final String SUBJECT = "subject"; |
| |
| /** |
| * A name given to the resource. Typically, a Title will be a name by which |
| * the resource is formally known. |
| */ |
| public static final String TITLE = "title"; |
| |
| /** |
| * The nature or genre of the content of the resource. Type includes terms |
| * describing general categories, functions, genres, or aggregation levels for |
| * content. Recommended best practice is to select a value from a controlled |
| * vocabulary (for example, the DCMI Type Vocabulary [DCMITYPE]). To describe |
| * the physical or digital manifestation of the resource, use the Format |
| * element. |
| */ |
| public static final String TYPE = "type"; |
| |
| } |
