How to use

removePropertiesByName

method

in

org.apache.xmpbox.type.ComplexPropertyContainer

/**
 * Add a property to the current structure
 * 
 * @param obj
 *            the property to add
 */
public final void addProperty(AbstractField obj)
{
  // https://www.adobe.com/content/dam/Adobe/en/devnet/xmp/pdfs/cs6/XMPSpecificationPart1.pdf
  // "Each property name in an XMP packet shall be unique within that packet"
  // "Multiple values are represented using an XMP array value"
  // "The nested element's element content shall consist of zero or more rdf:li elements, 
  // one for each item in the array"
  // thus delete existing elements of a property, except for arrays ("li")
  if (!(this instanceof ArrayProperty))
  {
    container.removePropertiesByName(obj.getPropertyName());
  }
  container.addProperty(obj);
}

/**
 * Add a property to the current structure
 * 
 * @param obj
 *            the property to add
 */
public final void addProperty(AbstractField obj)
{
  // https://www.adobe.com/content/dam/Adobe/en/devnet/xmp/pdfs/cs6/XMPSpecificationPart1.pdf
  // "Each property name in an XMP packet shall be unique within that packet"
  // "Multiple values are represented using an XMP array value"
  // "The nested element's element content shall consist of zero or more rdf:li elements, 
  // one for each item in the array"
  // thus delete existing elements of a property, except for arrays ("li")
  if (!(this instanceof ArrayProperty))
  {
    container.removePropertiesByName(obj.getPropertyName());
  }
  container.addProperty(obj);
}

/**
 * Add a property to the current structure
 * 
 * @param obj
 *            the property to add
 */
public final void addProperty(AbstractField obj)
{
  // https://www.adobe.com/content/dam/Adobe/en/devnet/xmp/pdfs/cs6/XMPSpecificationPart1.pdf
  // "Each property name in an XMP packet shall be unique within that packet"
  // "Multiple values are represented using an XMP array value"
  // "The nested element's element content shall consist of zero or more rdf:li elements, 
  // one for each item in the array"
  // thus delete existing elements of a property, except for arrays ("li")
  if (!(this instanceof ArrayProperty))
  {
    container.removePropertiesByName(obj.getPropertyName());
  }
  container.addProperty(obj);
}