itextpdf-master/pdfa/src/main/java/com/itextpdf/text/pdf/AFRelationshipValue.java
/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2022 iText Group NV
 * Authors: Bruno Lowagie, Pavel Alay, et al.
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package com.itextpdf.text.pdf;

/**
 * @see PdfName constants for AFRelationship key of Filespec dictionary.
 * An AFRelationship value represents the relationship of this object to the source that points to it. Predefined values are Source, Data, Alternative, Supplement or Unspecified. Other values may be used to represent other types of relationships, but should follow the rules for second-class names (ISO 32000‑1, Annex E).
 */
public final class AFRelationshipValue {
    /**
     * Source shall be used if this file specification is the original source material for the associated content.
     */
    public static final PdfName Source = new PdfName("Source");
    /**
     * Data shall be used if this file specification represents information used to derive a visual presentation, such as for a table or a graph.
     */
    public static final PdfName Data = new PdfName("Data");
    /**
     * Alternative shall be used if this file specification is an alternative representation of content, for example audio.
     */
    public static final PdfName Alternative = new PdfName("Alternative");
    /**
     * Supplement shall be used if this file specification represents a supplemental representation of the original source or data that may be more easily consumable (e.g. A MathML version of an equation).
     * NOTE 1 Supplement is to be used only when the file is not the source or an alternative.
     */
    public static final PdfName Supplement = new PdfName("Supplement");
    /**
     * Unspecified shall be used when the relationship is not known or cannot be described using one of the other values.
     * NOTE 2 Unspecified is to be used only when no other value correctly reflects the relationship.
     */
    public static final PdfName Unspecified = new PdfName("Unspecified");
}
