/**
* Constructor.
*
* @param os output stream
* @param sopts serializer options
* @throws QueryIOException query I/O exception
*/
protected OutputSerializer(final OutputStream os, final SerializerOptions sopts)
throws QueryIOException {
this.sopts = sopts;
indent = sopts.yes(INDENT);
// project-specific options
indents = sopts.get(INDENTS);
tab = sopts.yes(TABULATOR) ? '\t' : ' ';
encoding = Strings.normEncoding(sopts.get(ENCODING), true);
PrintOutput po;
if (encoding == Strings.UTF8) {
po = PrintOutput.get(os);
} else {
try {
po = new EncoderOutput(os, Charset.forName(encoding));
} catch (final Exception ex) {
throw SERENCODING_X.getIO(encoding);
}
}
final int limit = sopts.get(LIMIT);
if (limit != -1) po.setLimit(limit);
final byte[] nl = token(sopts.get(NEWLINE).newline());
if (nl.length != 1 || nl[0] != '\n') po = new NewlineOutput(po, nl);
out = po;
}
/**
* Returns the media type defined in the specified serialization parameters.
*
* @param sopts serialization parameters
* @return media type
*/
public static String mediaType(final SerializerOptions sopts) {
// set content type
final String type = sopts.get(SerializerOptions.MEDIA_TYPE);
if (!type.isEmpty()) return type;
// determine content type dependent on output method
final SerialMethod sm = sopts.get(SerializerOptions.METHOD);
if (sm == SerialMethod.RAW) return APP_OCTET;
if (sm == SerialMethod.XML) return APP_XML;
if (sm == SerialMethod.XHTML || sm == SerialMethod.HTML) return TEXT_HTML;
if (sm == SerialMethod.JSON) {
final JsonSerialOptions jprop = sopts.get(SerializerOptions.JSON);
return jprop.get(JsonOptions.FORMAT) == JsonFormat.JSONML ? APP_JSONML : APP_JSON;
}
return TEXT_PLAIN;
}
/** Initializes the output. Sets the expected encoding and content type. */
public void initResponse() {
// set content type and encoding
final SerializerOptions opts = sopts();
final String enc = opts.get(SerializerOptions.ENCODING);
res.setCharacterEncoding(enc);
final String ct = mediaType(opts);
res.setContentType(new TokenBuilder(ct).add(CHARSET).add(enc).toString());
}
/**
* Runs a query and checks the serialization parameters.
*
* @throws IOException I/O exception
*/
@Test
public void queryOptions() throws IOException {
final Query query = session.query("declare option output:encoding 'US-ASCII';()");
query.execute();
final SerializerOptions sp = new SerializerOptions();
sp.parse(query.options());
assertEquals("US-ASCII", sp.get(SerializerOptions.ENCODING));
query.close();
}
/** Creates the database context. */
@BeforeClass
public static void start() {
// turn off pretty printing
set(MainOptions.SERIALIZER, SerializerOptions.get(false));
}
/**
* Sets the item separator.
*
* @param def default separator
*/
protected final void itemsep(final String def) {
final String is = sopts.get(ITEM_SEPARATOR);
itemsep = sopts.contains(ITEM_SEPARATOR) ? token(is) : def == null ? null : token(def);
}