Examples with StringValue org.exist.xquery.value.StringValue used on opensource projects

Example 31 with StringValue

use of org.exist.xquery.value.StringValue in project exist by eXist-db.

the class FileRead method eval.

@Override
public Sequence eval(final Sequence[] args, final Sequence contextSequence) throws XPathException {
    if (!context.getSubject().hasDbaRole()) {
        XPathException xPathException = new XPathException(this, "Permission denied, calling user '" + context.getSubject().getName() + "' must be a DBA to call this function.");
        logger.error("Invalid user", xPathException);
        throw xPathException;
    }
    final String inputPath = args[0].getStringValue();
    final Path file = FileModuleHelper.getFile(inputPath);
    final Charset encoding;
    if (args.length == 2) {
        encoding = Charset.forName(args[1].getStringValue());
    } else {
        encoding = StandardCharsets.UTF_8;
    }
    try {
        return new StringValue(new String(Files.readAllBytes(file), encoding));
    } catch (final IOException e) {
        throw new XPathException(this, e);
    }
}

Example 32 with StringValue

use of org.exist.xquery.value.StringValue in project exist by eXist-db.

the class GetThumbnailsFunction method eval.

/*
	 * (non-Javadoc)
	 * 
	 * @see org.exist.xquery.BasicFunction#eval(org.exist.xquery.value.Sequence[],
	 *      org.exist.xquery.value.Sequence)
	 */
public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
    ValueSequence result = new ValueSequence();
    // boolean isDatabasePath = false;
    boolean isSaveToDataBase = false;
    if (args[0].isEmpty()) {
        return Sequence.EMPTY_SEQUENCE;
    }
    AnyURIValue picturePath = (AnyURIValue) args[0].itemAt(0);
    if (picturePath.getStringValue().startsWith("xmldb:exist://")) {
        picturePath = new AnyURIValue(picturePath.getStringValue().substring(14));
    }
    AnyURIValue thumbPath = null;
    if (args[1].isEmpty()) {
        thumbPath = new AnyURIValue(picturePath.toXmldbURI().append(THUMBPATH));
        isSaveToDataBase = true;
    } else {
        thumbPath = (AnyURIValue) args[1].itemAt(0);
        if (thumbPath.getStringValue().startsWith("file:")) {
            isSaveToDataBase = false;
            thumbPath = new AnyURIValue(thumbPath.getStringValue().substring(5));
        } else {
            isSaveToDataBase = true;
            try {
                XmldbURI thumbsURI = XmldbURI.xmldbUriFor(thumbPath.getStringValue());
                if (!thumbsURI.isAbsolute())
                    thumbsURI = picturePath.toXmldbURI().append(thumbPath.toString());
                thumbPath = new AnyURIValue(thumbsURI.toString());
            } catch (URISyntaxException e) {
                throw new XPathException(this, e.getMessage());
            }
        }
    }
    // result.add(new StringValue(picturePath.getStringValue()));
    // result.add(new StringValue(thumbPath.getStringValue() + " isDB?= "
    // + isSaveToDataBase));
    int maxThumbHeight = MAXTHUMBHEIGHT;
    int maxThumbWidth = MAXTHUMBWIDTH;
    if (!args[2].isEmpty()) {
        maxThumbHeight = ((IntegerValue) args[2].itemAt(0)).getInt();
        if (args[2].hasMany())
            maxThumbWidth = ((IntegerValue) args[2].itemAt(1)).getInt();
    }
    String prefix = THUMBPREFIX;
    if (!args[3].isEmpty()) {
        prefix = args[3].itemAt(0).getStringValue();
    }
    // result.add(new StringValue("maxThumbHeight = " + maxThumbHeight
    // + ", maxThumbWidth = " + maxThumbWidth));
    BrokerPool pool = null;
    try {
        pool = BrokerPool.getInstance();
    } catch (Exception e) {
        result.add(new StringValue(e.getMessage()));
        return result;
    }
    final DBBroker dbbroker = context.getBroker();
    // Start transaction
    final TransactionManager transact = pool.getTransactionManager();
    try (final Txn transaction = transact.beginTransaction()) {
        Collection thumbCollection = null;
        Path thumbDir = null;
        if (isSaveToDataBase) {
            try {
                thumbCollection = dbbroker.getOrCreateCollection(transaction, thumbPath.toXmldbURI());
                dbbroker.saveCollection(transaction, thumbCollection);
            } catch (Exception e) {
                throw new XPathException(this, e.getMessage());
            }
        } else {
            thumbDir = Paths.get(thumbPath.toString());
            if (!Files.isDirectory(thumbDir))
                try {
                    Files.createDirectories(thumbDir);
                } catch (IOException e) {
                    throw new XPathException(this, e.getMessage());
                }
        }
        Collection allPictures = null;
        Collection existingThumbsCol = null;
        List<Path> existingThumbsArray = null;
        try {
            allPictures = dbbroker.getCollection(picturePath.toXmldbURI());
            if (allPictures == null) {
                return Sequence.EMPTY_SEQUENCE;
            }
            if (isSaveToDataBase) {
                existingThumbsCol = dbbroker.getCollection(thumbPath.toXmldbURI());
            } else {
                existingThumbsArray = FileUtils.list(thumbDir, path -> {
                    final String fileName = FileUtils.fileName(path);
                    return fileName.endsWith(".jpeg") || fileName.endsWith(".jpg");
                });
            }
        } catch (PermissionDeniedException | IOException e) {
            throw new XPathException(this, e.getMessage(), e);
        }
        DocumentImpl docImage = null;
        BinaryDocument binImage = null;
        @SuppressWarnings("unused") BufferedImage bImage = null;
        @SuppressWarnings("unused") byte[] imgData = null;
        Image image = null;
        UnsynchronizedByteArrayOutputStream os = null;
        try {
            Iterator<DocumentImpl> i = allPictures.iterator(dbbroker);
            while (i.hasNext()) {
                docImage = i.next();
                // is not already existing??
                if (!((fileExist(context.getBroker(), existingThumbsCol, docImage, prefix)) || (fileExist(existingThumbsArray, docImage, prefix)))) {
                    if (docImage.getResourceType() == DocumentImpl.BINARY_FILE)
                        // TODO maybe extends for gifs too.
                        if (docImage.getMimeType().startsWith("image/jpeg")) {
                            binImage = (BinaryDocument) docImage;
                            try (final InputStream is = dbbroker.getBinaryResource(transaction, binImage)) {
                                image = ImageIO.read(is);
                            } catch (IOException ioe) {
                                throw new XPathException(this, ioe.getMessage());
                            }
                            try {
                                bImage = ImageModule.createThumb(image, maxThumbHeight, maxThumbWidth);
                            } catch (Exception e) {
                                throw new XPathException(this, e.getMessage());
                            }
                            if (isSaveToDataBase) {
                                os = new UnsynchronizedByteArrayOutputStream();
                                try {
                                    ImageIO.write(bImage, "jpg", os);
                                } catch (Exception e) {
                                    throw new XPathException(this, e.getMessage());
                                }
                                try (final StringInputSource sis = new StringInputSource(os.toByteArray())) {
                                    thumbCollection.storeDocument(transaction, dbbroker, XmldbURI.create(prefix + docImage.getFileURI()), sis, new MimeType("image/jpeg", MimeType.BINARY));
                                } catch (final Exception e) {
                                    throw new XPathException(this, e.getMessage());
                                }
                            // result.add(new
                            // StringValue(""+docImage.getFileURI()+"|"+thumbCollection.getURI()+THUMBPREFIX
                            // + docImage.getFileURI()));
                            } else {
                                try {
                                    ImageIO.write(bImage, "jpg", Paths.get(thumbPath.toString() + "/" + prefix + docImage.getFileURI()).toFile());
                                } catch (Exception e) {
                                    throw new XPathException(this, e.getMessage());
                                }
                            // result.add(new StringValue(
                            // thumbPath.toString() + "/"
                            // + THUMBPREFIX
                            // + docImage.getFileURI()));
                            }
                        }
                } else {
                    // result.add(new StringValue(""+docImage.getURI()+"|"
                    // + ((existingThumbsCol != null) ? ""
                    // + existingThumbsCol.getURI() : thumbDir
                    // .toString()) + "/" + prefix
                    // + docImage.getFileURI()));
                    result.add(new StringValue(docImage.getFileURI().toString()));
                }
            }
        } catch (final PermissionDeniedException | LockException e) {
            throw new XPathException(this, e.getMessage(), e);
        }
        try {
            transact.commit(transaction);
        } catch (Exception e) {
            throw new XPathException(this, e.getMessage());
        }
    }
    final Optional<JournalManager> journalManager = pool.getJournalManager();
    journalManager.ifPresent(j -> j.flush(true, false));
    dbbroker.closeDocument();
    return result;
}

Example 33 with StringValue

use of org.exist.xquery.value.StringValue in project exist by eXist-db.

the class ExampleFunctions method sayHello.

/**
 * Creates an XML document like <hello>name</hello>.
 *
 * @param name An optional name, if empty then "stranger" is used.
 *
 * @return An XML document
 */
private DocumentImpl sayHello(final Optional<StringValue> name) throws XPathException {
    try {
        final MemTreeBuilder builder = new MemTreeBuilder(context);
        builder.startDocument();
        builder.startElement(new QName("hello"), null);
        builder.characters(name.map(StringValue::toString).orElse("stranger"));
        builder.endElement();
        builder.endDocument();
        return builder.getDocument();
    } catch (final QName.IllegalQNameException e) {
        throw new XPathException(this, e.getMessage(), e);
    }
}

Example 34 with StringValue

use of org.exist.xquery.value.StringValue in project exist by eXist-db.

the class ListFunction method eval.

public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
    ValueSequence result = new ValueSequence();
    Optional<ExistRepository> repo = getContext().getRepository();
    if (repo.isPresent()) {
        try {
            Repository parent_repo = repo.get().getParentRepo();
            for (Packages pkg : parent_repo.listPackages()) {
                String name = pkg.name();
                result.add(new StringValue(name));
            }
        } catch (Exception ex) {
            throw new XPathException("Problem listing packages in expath repository ", ex);
        }
        return result;
    } else {
        throw new XPathException("expath repository not available");
    }
}

Example 35 with StringValue

use of org.exist.xquery.value.StringValue in project exist by eXist-db.

the class ParseCQL method eval.

public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
    Sequence ret = Sequence.EMPTY_SEQUENCE;
    if (args[0].isEmpty())
        return Sequence.EMPTY_SEQUENCE;
    String query = args[0].getStringValue();
    String output = "XCQL";
    if (!args[1].isEmpty())
        output = args[1].getStringValue();
    try {
        CQLParser parser = new CQLParser(CQLParser.V1POINT2);
        // String local_full_query_string = query;
        // local_full_query_string = local_full_query_string.replace("-", "%2D");
        CQLNode query_cql = parser.parse(query);
        if (output.equals(OutputTypeXCQL)) {
            String xmlContent = query_cql.toXCQL();
            if (xmlContent.isEmpty()) {
                return Sequence.EMPTY_SEQUENCE;
            }
            StringReader reader = new StringReader(xmlContent);
            SAXAdapter adapter = new SAXAdapter(context);
            SAXParserFactory factory = SAXParserFactory.newInstance();
            factory.setNamespaceAware(true);
            InputSource src = new InputSource(reader);
            SAXParser saxParser = factory.newSAXParser();
            XMLReader xr = saxParser.getXMLReader();
            xr.setContentHandler(adapter);
            xr.setProperty(Namespaces.SAX_LEXICAL_HANDLER, adapter);
            xr.parse(src);
            ret = (DocumentImpl) adapter.getDocument();
        } else if (output.equals(OutputTypeString)) {
            ret = new StringValue(query_cql.toString());
        } else {
            ret = new StringValue(query_cql.toCQL());
        }
        return ret;
    } catch (CQLParseException e) {
        throw new XPathException(this, "An error occurred while parsing the query expression (CQLParseException): " + e.getMessage(), e);
    } catch (SAXException e) {
        throw new XPathException(this, "Error while parsing XML: " + e.getMessage(), e);
    } catch (IOException e) {
        throw new XPathException(this, "An error occurred while parsing the query expression (IOException): " + e.getMessage(), e);
    } catch (ParserConfigurationException e) {
        throw new XPathException(this, "Error while constructing XML parser: " + e.getMessage(), e);
    }
}