XMPConst.OPEN_FOR_UPDATE throwing error

Question

This short test script used to work getting a files description in Bridge, but now it fails on the line tha has: XMPConst.OPEN_FOR_UPDATE. The error is XMP Exception: OpenFile retuned false. Anyone else having issues with this?

#target bridge

if (ExternalObject.AdobeXMPScript == undefined) {
    ExternalObject.AdobeXMPScript = new ExternalObject('lib:AdobeXMPScript');
    }

var doc = app.document
var thumbs = doc.selections

for(var i=0;i<thumbs.length;i++){
    
    var tSpec = thumbs[i].spec;
    var testFile = new File(tSpec);

readTextFile (testFile)
    };//end for thumbs loop

function readTextFile(file){
      var xmpf = new XMPFile(File(file).fsName, XMPConst.UNKNOWN, XMPConst.OPEN_FOR_UPDATE );
      var xmp = xmpf.getXMP();
      var des = xmp.getProperty(XMPConst.NS_DC, "description").toString();
      alert(des)

xmpf.closeFile( XMPConst.CLOSE_UPDATE_SAFELY );
      
      }

Lumigraphics · Accepted Answer

YES! Some sample code would be wonderful.

XMPdesc();        
        
        XMPdesc = function(){
            var descThumbs = app.document.selections; //get selected thumbnails
            var newText = 'test'; //replacement text
            if(!descThumbs.length) return; //nothing selected
            for(var a in descThumbs){ //loop through thumbs
                if(!descThumbs[a].container){ //not a folder
                    try{
                        var descMeta = descThumbs[a].synchronousMetadata; //get metadata
                        var descXMP = new XMPMeta(descMeta.serialize()); //serialize
                        alert(descMeta.read(XMPConst.NS_DC, 'description').toString()); //read description
                        descXMP.deleteProperty(XMPConst.NS_DC, 'description'); //delete
                        descXMP.setLocalizedText(XMPConst.NS_DC, 'description', null, 'x-default', newText); //set new description
                        var descUpdatedPacket = descXMP.serialize(XMPConst.SERIALIZE_OMIT_PACKET_WRAPPER | XMPConst.SERIALIZE_USE_COMPACT_FORMAT); //serialize
                        descThumbs[a].metadata = new Metadata(descUpdatedPacket); //write to file
                        }
                    catch(e){
                        alert(e + e.line);
                        }
                    }
                }
            }

Kukurykus · Answer

The error occurs when you use .toString(). Then as processed file was not closed (by last code line), the Bridge remembered its open state, so next time it couldn't proceed, unless you restarted application. The solution is to change UPDATE to READ (due to your original question):

!ExternalObject.AdobeXMPScript && ExternalObject
.AdobeXMPScript = new ExternalObject('lib:AdobeXMPScript')

slctns = app.document.selections; while(slctns.length) {
	xmp = new XMPFile(slctns.shift().spec.fsName, XMPConst.UNKNOWN, XMPConst.OPEN_FOR_READ)
	try{alert(xmp.getXMP().getLocalizedText(XMPConst.NS_DC, 'description', 0, 0).toString())}catch(err){}
	xmp.closeFile(XMPConst.CLOSE_UPDATE_SAFELY)
}

btw please assign Scripting label to your thread 😉

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