Example usage for org.apache.poi.openxml4j.opc PackageRelationshipTypes THUMBNAIL

Introduction

In this page you can find the example usage for org.apache.poi.openxml4j.opc PackageRelationshipTypes THUMBNAIL.

Prototype

String THUMBNAIL

To view the source code for org.apache.poi.openxml4j.opc PackageRelationshipTypes THUMBNAIL.

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Document

Thumbnail relationship type.

Usage

From source file:org.alfresco.repo.content.transform.OOXMLThumbnailContentTransformer.java

License:Open Source License

@Override
protected void transformInternal(ContentReader reader, ContentWriter writer, TransformationOptions options)
        throws Exception {
    final String sourceMimetype = reader.getMimetype();
    final String sourceExtension = getMimetypeService().getExtension(sourceMimetype);
    final String targetMimetype = writer.getMimetype();

    if (log.isDebugEnabled()) {
        StringBuilder msg = new StringBuilder();
        msg.append("Transforming from ").append(sourceMimetype).append(" to ").append(targetMimetype);
        log.debug(msg.toString());// ww w . j  a v a2 s . co m
    }

    OPCPackage pkg = null;
    try {
        File ooxmlTempFile = TempFileProvider.createTempFile(this.getClass().getSimpleName() + "_ooxml",
                sourceExtension);
        reader.getContent(ooxmlTempFile);

        // Load the file
        pkg = OPCPackage.open(ooxmlTempFile.getPath());

        // Does it have a thumbnail?
        PackageRelationshipCollection rels = pkg.getRelationshipsByType(PackageRelationshipTypes.THUMBNAIL);
        if (rels.size() > 0) {
            // Get the thumbnail part
            PackageRelationship tRel = rels.getRelationship(0);
            PackagePart tPart = pkg.getPart(tRel);

            // Write it to the target
            InputStream tStream = tPart.getInputStream();
            writer.putContent(tStream);
            tStream.close();
        } else {
            log.debug("No thumbnail present in " + reader.toString());
            throw new UnimportantTransformException(NO_THUMBNAIL_PRESENT_IN_FILE + targetMimetype);
        }
    } catch (IOException e) {
        throw new AlfrescoRuntimeException("Unable to transform " + sourceExtension + " file.", e);
    } finally {
        if (pkg != null) {
            pkg.close();
        }
    }
}

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From source file:org.apache.tika.parser.microsoft.ooxml.AbstractOOXMLExtractor.java

License:Apache License

private void handleThumbnail(ContentHandler handler) {
    try {//from  ww w . j av a 2 s.c o m
        OPCPackage opcPackage = extractor.getPackage();
        for (PackageRelationship rel : opcPackage.getRelationshipsByType(PackageRelationshipTypes.THUMBNAIL)) {
            PackagePart tPart = opcPackage.getPart(rel);
            InputStream tStream = tPart.getInputStream();
            Metadata thumbnailMetadata = new Metadata();
            String thumbName = tPart.getPartName().getName();
            thumbnailMetadata.set(Metadata.RESOURCE_NAME_KEY, thumbName);

            AttributesImpl attributes = new AttributesImpl();
            attributes.addAttribute(XHTML, "class", "class", "CDATA", "embedded");
            attributes.addAttribute(XHTML, "id", "id", "CDATA", thumbName);
            handler.startElement(XHTML, "div", "div", attributes);
            handler.endElement(XHTML, "div", "div");

            thumbnailMetadata.set(Metadata.EMBEDDED_RELATIONSHIP_ID, thumbName);
            thumbnailMetadata.set(Metadata.CONTENT_TYPE, tPart.getContentType());
            thumbnailMetadata.set(TikaCoreProperties.TITLE, tPart.getPartName().getName());

            if (embeddedExtractor.shouldParseEmbedded(thumbnailMetadata)) {
                embeddedExtractor.parseEmbedded(TikaInputStream.get(tStream),
                        new EmbeddedContentHandler(handler), thumbnailMetadata, false);
            }

            tStream.close();
        }
    } catch (Exception ex) {

    }
}

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