EDOBE XDOM TAKE 6 IR - PRODUCTSHEET Especificações descarregar pdf (Página 257)

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Scripting Access to XMP Metadata

XMPScript, the XMP ExtendScript API, offers JavaScript access to the Adobe XMP Core and XMP Files

libraries. This chapter provides reference information for the JavaScript objects related to XMP, with their

properties and methods.

This chapter is not intended to provide complete details of the XMP metadata technology. For more

information about XMP metadata, see the XMP Specification at Adobe Developer Center,

http://www.adobe.com/devnet/

Adobe Bridge CS5 makes the XMP library available in its libraries folder. Scripts must load the library at run

time to use the API; it is not automatically loaded when Adobe Bridge launches. The XMPScript API is

separate from the Adobe Bridge DOM. You can use it independently, to get and set metadata in supported

formats; or you can use it with the Adobe Bridge API to modify the metadata that you access from files

using the Adobe Bridge DOM’s

Thumbnail object.

OTE: Adobe Bridge provides a means of embedding metadata values in a script (to describe the script file

itself) using XML delimited by special tags within a comment block. This is not related to metadata access

for files and thumbnails. For details, see the Adobe Bridge JavaScript Guide.

Accessing the XMP scripting API

To use the XMP objects, you must load the XMP library as an ExtendScript ExternalObject. To avoid

loading multiple instances of the library, use code like the following:

// load the library

if (ExternalObject.AdobeXMPScript == undefined) {

ExternalObject.AdobeXMPScript = new

ExternalObject(’lib:AdobeXMPScript’);

}

After the library has been loaded, these primary XMP classes are available in the global JavaScript

namespace:

Additional top-level objects include array-handling utilities, a date-time object, and constant definitions

that include namespace constants. The top-level objects provide access to additional support classes that

encapsulate individual metadata properties, file information, and XMP packet information, and a utility

that allows iteration through properties.

See “

XMPScript object reference” on page 261 for details of the classes, their properties, and their

methods.

XMPMeta object

Provides the core services of the XMP Toolkit. Allows you to create and delete

metadata properties, and to retrieve and modify property values.

XMPFile object

Provides convenient I/O access to the main, or document level, XMP for a file. Allows

you to retrieve existing metadata from a file, update file metadata, and add new

metadata to a file.

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EDOBE XDOM TAKE 6 IR - PRODUCTSHEET Especificações Página 257