Class InitParams

solr/core/src/java/org/apache/solr/core/InitParams.java:33–147

An Object which represents a tag

/** An Object which represents a {@code <initParams>} tag */
public class InitParams {
  public static final String TYPE = "initParams";
  public final String name;
  public final Set<String> paths;
  public final NamedList<?> defaults;
  public final NamedList<?> invariants;
  public final NamedList<?> appends;
  private final PluginInfo pluginInfo;
  private static final Set<String> KNOWN_KEYS = Set.of(DEFAULTS, INVARIANTS, APPENDS);

  public InitParams(PluginInfo p) {
    this.pluginInfo = p;
    this.name = p.attributes.get(NAME);
    Set<String> paths = null;
    String pathStr = p.attributes.get(PATH);
    if (pathStr != null) {
      paths = Set.copyOf(StrUtils.splitSmart(pathStr, ','));
    }
    this.paths = paths;
    NamedList<?> nl = (NamedList<?>) p.initArgs.get(DEFAULTS);
    defaults = nl == null ? null : nl.getImmutableCopy();
    nl = (NamedList<?>) p.initArgs.get(INVARIANTS);
    invariants = nl == null ? null : nl.getImmutableCopy();
    nl = (NamedList<?>) p.initArgs.get(APPENDS);
    appends = nl == null ? null : nl.getImmutableCopy();
  }

  public boolean matchPath(String name) {
    if (paths == null) return false;
    if (paths.contains(name)) return true;

    for (String path : paths) {
      if (matchPath(path, name)) return true;
    }

    return false;
  }

  private static boolean matchPath(String path, String name) {
    List<String> pathSplit = StrUtils.splitSmart(path, '/');
    List<String> nameSplit = StrUtils.splitSmart(name, '/');
    int i = 0;
    for (; i < nameSplit.size(); i++) {
      String s = nameSplit.get(i);
      String ps = pathSplit.size() > i ? pathSplit.get(i) : null;
      if (ps == null) return false;
      if (s.equals(ps)) continue;
      if ("*".equals(ps) && nameSplit.size() == i + 1) return true;
      if ("**".equals(ps)) return true;
      return false;
    }
    String ps = pathSplit.size() > i ? pathSplit.get(i) : null;
    return "*".equals(ps) || "**".equals(ps);
  }

  public void apply(PluginInfo info) {
    if (!info.isFromSolrConfig()) {
      // if this is a component implicitly defined in code it should be overridden by initPrams