How to use

accept

method

in

org.apache.jackrabbit.spi.commons.query.QueryRootNode

/**
 * Starts the tree traversal and returns the lucene
 * {@link org.apache.lucene.search.Query}.
 *
 * @return the lucene <code>Query</code>.
 * @throws RepositoryException if an error occurs while building the lucene
 *                             query.
 */
private Query createLuceneQuery() throws RepositoryException {
  return (Query) root.accept(this, null);
}

/**
 * Starts the tree traversal and returns the lucene
 * {@link org.apache.lucene.search.Query}.
 *
 * @return the lucene <code>Query</code>.
 * @throws RepositoryException if an error occurs while building the lucene
 *                             query.
 */
private Query createLuceneQuery() throws RepositoryException {
  return (Query) root.accept(this, null);
}

private QueryFormat(QueryRootNode root, NameResolver resolver)
    throws RepositoryException {
  this.resolver = resolver;
  statement = root.accept(this, new StringBuffer()).toString();
  if (exceptions.size() > 0) {
    Exception e = (Exception) exceptions.get(0);
    throw new InvalidQueryException(e.getMessage(), e);
  }
}

private QueryFormat(QueryRootNode root, NameResolver resolver)
    throws RepositoryException {
  this.resolver = resolver;
  statement = root.accept(this, new StringBuffer()).toString();
  if (exceptions.size() > 0) {
    Exception e = (Exception) exceptions.get(0);
    throw new InvalidQueryException(e.getMessage(), e);
  }
}

private QueryFormat(QueryRootNode root, NameResolver resolver)
    throws RepositoryException {
  this.resolver = resolver;
  statement = root.accept(this, new StringBuffer()).toString();
  if (exceptions.size() > 0) {
    Exception e = (Exception) exceptions.get(0);
    throw new InvalidQueryException(e.getMessage(), e);
  }
}

private QueryFormat(QueryRootNode root, NameResolver resolver)
    throws RepositoryException {
  this.resolver = resolver;
  statement = root.accept(this, new StringBuffer()).toString();
  if (exceptions.size() > 0) {
    Exception e = (Exception) exceptions.get(0);
    throw new InvalidQueryException(e.getMessage(), e);
  }
}

  @Override
  public Object accept(QueryNodeVisitor visitor, Object data) throws RepositoryException
  {
    // the lucene query without acl constraints
    Query luceneQuery = (Query) super.accept(visitor, data);
    if (!QueryExecutorHelper.isExecuting())
    {
      // not a criteria query: skip lucene decoration
      return luceneQuery;
    }
    try
    {
      // retrieves the session
      Field sessionField = LuceneQueryBuilder.class.getDeclaredField("session");
      sessionField.setAccessible(true);
      SessionImpl session = (SessionImpl) sessionField.get(visitor);
      // adds acl constraints
      AclQueryDecorator decorator = new AclQueryDecorator(session, AclSearchIndex.this);
      return decorator.applyAcl(luceneQuery);
    }
    catch (Throwable e)
    {
      throw new RepositoryException(e);
    }
  }
};