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

Example 16 with BinaryValue

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

the class Shared method getStreamSource.

public static StreamSource getStreamSource(Item item, XQueryContext context) throws XPathException, IOException {
    final StreamSource streamSource = new StreamSource();
    if (item.getType() == Type.JAVA_OBJECT) {
        LOG.debug("Streaming Java object");
        final Object obj = ((JavaObjectValue) item).getObject();
        if (!(obj instanceof File)) {
            throw new XPathException("Passed java object should be a File");
        }
        final File inputFile = (File) obj;
        final InputStream is = new FileInputStream(inputFile);
        streamSource.setInputStream(is);
        streamSource.setSystemId(inputFile.toURI().toURL().toString());
    } else if (item.getType() == Type.ANY_URI) {
        LOG.debug("Streaming xs:anyURI");
        // anyURI provided
        String url = item.getStringValue();
        // Fix URL
        if (url.startsWith("/")) {
            url = "xmldb:exist://" + url;
        }
        final InputStream is = new URL(url).openStream();
        streamSource.setInputStream(is);
        streamSource.setSystemId(url);
    } else if (item.getType() == Type.ELEMENT || item.getType() == Type.DOCUMENT) {
        LOG.debug("Streaming element or document node");
        if (item instanceof NodeProxy) {
            final NodeProxy np = (NodeProxy) item;
            final String url = "xmldb:exist://" + np.getOwnerDocument().getBaseURI();
            LOG.debug("Document detected, adding URL {}", url);
            streamSource.setSystemId(url);
        }
        // Node provided
        final DBBroker broker = context.getBroker();
        final ConsumerE<ConsumerE<Serializer, IOException>, IOException> withSerializerFn = fn -> {
            final Serializer serializer = broker.borrowSerializer();
            try {
                fn.accept(serializer);
            } finally {
                broker.returnSerializer(serializer);
            }
        };
        final NodeValue node = (NodeValue) item;
        final InputStream is = new NodeInputStream(context.getBroker().getBrokerPool(), withSerializerFn, node);
        streamSource.setInputStream(is);
    } else if (item.getType() == Type.BASE64_BINARY || item.getType() == Type.HEX_BINARY) {
        LOG.debug("Streaming base64 binary");
        final BinaryValue binary = (BinaryValue) item;
        final byte[] data = binary.toJavaObject(byte[].class);
        final InputStream is = new UnsynchronizedByteArrayInputStream(data);
        streamSource.setInputStream(is);
        if (item instanceof Base64BinaryDocument) {
            final Base64BinaryDocument b64doc = (Base64BinaryDocument) item;
            final String url = "xmldb:exist://" + b64doc.getUrl();
            LOG.debug("Base64BinaryDocument detected, adding URL {}", url);
            streamSource.setSystemId(url);
        }
    } else {
        LOG.error("Wrong item type {}", Type.getTypeName(item.getType()));
        throw new XPathException("wrong item type " + Type.getTypeName(item.getType()));
    }
    return streamSource;
}

Example 17 with BinaryValue

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

the class RestXqServiceImpl method extractRequestBody.

@Override
protected Sequence extractRequestBody(final HttpRequest request) throws RestXqServiceException {
    // TODO don't use close shield input stream and move parsing of form parameters from HttpServletRequestAdapter into RequestBodyParser
    InputStream is;
    FilterInputStreamCache cache = null;
    try {
        // first, get the content of the request
        is = new CloseShieldInputStream(request.getInputStream());
        if (is.available() <= 0) {
            return null;
        }
        // if marking is not supported, we have to cache the input stream, so we can reread it, as we may use it twice (once for xml attempt and once for string attempt)
        if (!is.markSupported()) {
            cache = FilterInputStreamCacheFactory.getCacheInstance(() -> {
                final Configuration configuration = getBrokerPool().getConfiguration();
                return (String) configuration.getProperty(Configuration.BINARY_CACHE_CLASS_PROPERTY);
            }, is);
            is = new CachingFilterInputStream(cache);
        }
        is.mark(Integer.MAX_VALUE);
    } catch (final IOException ioe) {
        throw new RestXqServiceException(RestXqErrorCodes.RQDY0014, ioe);
    }
    Sequence result = null;
    try {
        // was there any POST content?
        if (is != null && is.available() > 0) {
            String contentType = request.getContentType();
            // 1) determine if exists mime database considers this binary data
            if (contentType != null) {
                // strip off any charset encoding info
                if (contentType.contains(";")) {
                    contentType = contentType.substring(0, contentType.indexOf(";"));
                }
                MimeType mimeType = MimeTable.getInstance().getContentType(contentType);
                if (mimeType != null && !mimeType.isXMLType()) {
                    // binary data
                    try {
                        final BinaryValue binaryValue = BinaryValueFromInputStream.getInstance(binaryValueManager, new Base64BinaryValueType(), is);
                        if (binaryValue != null) {
                            result = new SequenceImpl<>(new BinaryTypedValue(binaryValue));
                        }
                    } catch (final XPathException xpe) {
                        throw new RestXqServiceException(RestXqErrorCodes.RQDY0014, xpe);
                    }
                }
            }
            if (result == null) {
                // 2) not binary, try and parse as an XML document
                final DocumentImpl doc = parseAsXml(is);
                if (doc != null) {
                    result = new SequenceImpl<>(new DocumentTypedValue(doc));
                }
            }
            if (result == null) {
                String encoding = request.getCharacterEncoding();
                // 3) not a valid XML document, return a string representation of the document
                if (encoding == null) {
                    encoding = "UTF-8";
                }
                try {
                    // reset the stream, as we need to reuse for string parsing
                    is.reset();
                    final StringValue str = parseAsString(is, encoding);
                    if (str != null) {
                        result = new SequenceImpl<>(new StringTypedValue(str));
                    }
                } catch (final IOException ioe) {
                    throw new RestXqServiceException(RestXqErrorCodes.RQDY0014, ioe);
                }
            }
        }
    } catch (IOException e) {
        throw new RestXqServiceException(e.getMessage());
    } finally {
        if (cache != null) {
            try {
                cache.invalidate();
            } catch (final IOException ioe) {
                LOG.error(ioe.getMessage(), ioe);
            }
        }
        if (is != null) {
            /*
                 * Do NOT close the stream if its a binary value,
                 * because we will need it later for serialization
                 */
            boolean isBinaryType = false;
            if (result != null) {
                try {
                    final Type type = result.head().getType();
                    isBinaryType = (type == Type.BASE64_BINARY || type == Type.HEX_BINARY);
                } catch (final IndexOutOfBoundsException ioe) {
                    LOG.warn("Called head on an empty HTTP Request body sequence", ioe);
                }
            }
            if (!isBinaryType) {
                try {
                    is.close();
                } catch (final IOException ioe) {
                    LOG.error(ioe.getMessage(), ioe);
                }
            }
        }
    }
    if (result != null) {
        return result;
    } else {
        return Sequence.EMPTY_SEQUENCE;
    }
}