com.adobe.fd.pdfutility.services

Interface XMPUtilityService

public interface XMPUtilityService

Enables the creation of a Java object that invokes operations that belong to the XMP Utility service. Using this object, you can perform tasks such as retrieving metadata from a PDF document or replacing a PDF document's metadata. XMP provides a standard format for creating, processing, and interchanging metadata for a wide variety of applications. XMP provides a model by which metadata is represented. XMP metadata is encoded as XML-formatted text that uses the W3C standard Resource Description Framework (RDF).

In XMP, metadata consists of a set of properties that are associated with a document. Metadata includes such properties as the author, title, and modification date of a document. In a PDF file, metadata can be stored in two places:

• In the Info dictionary of the file trailer dictionary. This dictionary contains information about the file, such as title, author, and creation date. This information is stored as PDF objects such as strings and dates, not in XML format.
• In the Metadata dictionary of the document catalog. This dictionary contains metadata associated with the entire document. This information is represented as XMP metadata.

For information, see Working With The XMP Utility Service.

Method Summary

Modifier and Type	Method and Description
XMPUtilityMetadata	exportMetadata(Document inPDFDoc) Returns the metadata located within a PDF document as an XMPUtilityMetadata object.
Document	exportXMP(Document inPDFDoc) Returns the metadata located within a PDF document as an XMP document.
Document	importMetadata(Document inPDFDoc, XMPUtilityMetadata metadata) Replaces the metadata located within a PDF document with new metadata.
Document	importXMP(Document inPDFDoc, Document xmp) Replaces the metadata located in a PDF document with newer metadata.

Method Detail

importXMP

Document importXMP(Document inPDFDoc,
                   Document xmp)
            throws XMPUtilityException

Replaces the metadata located in a PDF document with newer metadata.

Parameters:

inPDFDoc - A Document object that represents the PDF document for which metadata is replaced.

xmp - A Document object that represents XMP metadata.

Returns:

A Document object that represents the PDF document that contains new metadata.

Throws:

XMPUtilityException - if an error occurs during this operation.

exportXMP

Document exportXMP(Document inPDFDoc)
            throws XMPUtilityException

Returns the metadata located within a PDF document as an XMP document.

Parameters:

inPDFDoc - A Document object that represents the PDF document for which metadata is returned.

Returns:

A Document object that represents XMP metadata. Data located within this object can be written to an XML file.

Throws:

XMPUtilityException - if an error occurs during this operation.

importMetadata

Document importMetadata(Document inPDFDoc,
                        XMPUtilityMetadata metadata)
                 throws XMPUtilityException

Replaces the metadata located within a PDF document with new metadata. Any null values in the supplied XMPUtilityMetadata object removes entries from the metadata. Also, as a fix for a bug, keywords supplied in the keywords list of the metadata object supplied will have leading and trailing whitespace removed, whitespace being defined by Java's trim operation on strings.

Parameters:

inPDFDoc - A Document object that represents the PDF document for which metadata is replaced.

metadata - A XMPUtilityMetadata object that contains metadata values that are used to replace existing metadata.

Returns:

A Document object that represents the PDF document that contains new metadata.

Throws:

XMPUtilityException - if an error occurs during this operation.

exportMetadata

XMPUtilityMetadata exportMetadata(Document inPDFDoc)
                           throws XMPUtilityException

Returns the metadata located within a PDF document as an XMPUtilityMetadata object.

Parameters:

inPDFDoc - A Document object that represents the PDF document for which metadata is returned.

Returns:

An XMPUtilityMetadata object that represents XMP metadata.

Throws:

XMPUtilityException - if an error occurs during this operation.