private Map<String, String> getParameters(PatternBinding binding, String requestUri) {
if (binding.getParameterNames().isEmpty()) {
return Collections.EMPTY_MAP;
}
Map<String, String> parameters = new HashMap<>();
List<String> parameterNames = binding.getParameterNames();
Matcher matcher = binding.getPattern().matcher(requestUri);
matcher.matches();
int groupCount = matcher.groupCount();
if (groupCount > 0) {
for (int i = 0; i < parameterNames.size(); i++) {
parameters.put(parameterNames.get(i), matcher.group(i + 1));
}
}
return parameters;
}
private String uriFor(PatternBinding binding, Map<String, Object> parameters) {
String uri = binding.getRoute().getUriPattern();
List<String> parameterNames = binding.getParameterNames();
if (!parameters.keySet().containsAll(parameterNames)) {
log.error(
"You must provide values for all path parameters. {} vs {}",
parameterNames,
parameters.keySet());
}
Map<String, Object> queryParameters = new HashMap<>(parameters.size());
for (Entry<String, Object> parameterPair : parameters.entrySet()) {
boolean foundAsPathParameter = false;
StringBuffer sb = new StringBuffer();
String buffer = String.format(VARIABLE_PART_PATTERN_WITH_PLACEHOLDER, parameterPair.getKey());
Pattern pattern = Pattern.compile(buffer);
Matcher matcher = pattern.matcher(uri);
while (matcher.find()) {
String pathValue = parameterPair.getValue().toString();
matcher.appendReplacement(sb, pathValue);
foundAsPathParameter = true;
}
matcher.appendTail(sb);
uri = sb.toString();
if (!foundAsPathParameter) {
queryParameters.put(parameterPair.getKey(), parameterPair.getValue());
}
}
// now prepare the query string for this url if we got some query params
if (!queryParameters.isEmpty()) {
// add remaining parameters as query parameters
StringBuilder query = new StringBuilder();
Iterator<Entry<String, Object>> iterator = queryParameters.entrySet().iterator();
while (iterator.hasNext()) {
Entry<String, Object> parameterEntry = iterator.next();
String parameterName = parameterEntry.getKey();
Object parameterValue = parameterEntry.getValue();
String encodedParameterValue = null;
try {
encodedParameterValue = URLEncoder.encode(parameterValue.toString(), PippoConstants.UTF8);
} catch (UnsupportedEncodingException e) {
throw new PippoRuntimeException(
"Cannot encode the parameter value '" + parameterValue.toString() + "'", e);
}
query.append(parameterName).append("=").append(encodedParameterValue);
if (iterator.hasNext()) {
query.append("&");
}
}
uri += "?" + query;
}
return uri;
}