How to use

value

method

in

com.bazaarvoice.ostrich.partition.PartitionKey

/**
 * Returns an array indexed by argument index with the value of the @PartitionKey annotation for each argument,
 * or null if no arguments are annotated with @PartitionKey.
 */
private String[] collectPartitionKeyAnnotations(Method method) {
  Annotation[][] annotations = method.getParameterAnnotations();
  String[] keyMappings = new String[annotations.length];
  boolean keyMappingFound = false;
  Map<String, Integer> unique = Maps.newHashMap();
  for (int i = 0; i < annotations.length; i++) {
    PartitionKey annotation = findPartitionKeyAnnotation(annotations[i]);
    if (annotation == null) {
      continue;
    }
    String key = checkNotNull(annotation.value());
    Integer prev = unique.put(key, i);
    checkState(prev == null, "Method '%s' has multiple arguments annotated with the same @PartitionKey " +
        "value '%s': arguments %s and %s", method, key, prev, i);
    keyMappings[i] = key;
    keyMappingFound = true;
  }
  return keyMappingFound ? keyMappings : null;
}

/**
 * Returns an array indexed by argument index with the value of the @PartitionKey annotation for each argument,
 * or null if no arguments are annotated with @PartitionKey.
 */
private String[] collectPartitionKeyAnnotations(Method method) {
  Annotation[][] annotations = method.getParameterAnnotations();
  String[] keyMappings = new String[annotations.length];
  boolean keyMappingFound = false;
  Map<String, Integer> unique = Maps.newHashMap();
  for (int i = 0; i < annotations.length; i++) {
    PartitionKey annotation = findPartitionKeyAnnotation(annotations[i]);
    if (annotation == null) {
      continue;
    }
    String key = checkNotNull(annotation.value());
    Integer prev = unique.put(key, i);
    checkState(prev == null, "Method '%s' has multiple arguments annotated with the same @PartitionKey " +
        "value '%s': arguments %s and %s", method, key, prev, i);
    keyMappings[i] = key;
    keyMappingFound = true;
  }
  return keyMappingFound ? keyMappings : null;
}