exec/java-exec/src/main/codegen/includes/compoundIdentifier.ftl

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    to you under the Apache License, Version 2.0 (the
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/**
 * Parses a Drill compound identifier.
 */
SqlIdentifier CompoundIdentifier() :
{
    DrillCompoundIdentifier.Builder builder = DrillCompoundIdentifier.newBuilder();
    String p;
    int index;
}
{
    p = Identifier()
    {
        builder.addString(p, getPos());
    }
    (
        (
        <DOT>
        (
            p = Identifier() {
                builder.addString(p, getPos());
            }
        |
            <STAR> {
                builder.addString("*", getPos());
            }
        )
        )
        |
        (
          <LBRACKET>
          index = UnsignedIntLiteral()
          <RBRACKET>
          {
              builder.addIndex(index, getPos());
          }
        )
    ) *
    {
      return builder.build();
    }
}

/**
 * Parses a compound identifier in the FROM clause.
 */
SqlIdentifier CompoundTableIdentifier() :
{
    final List<String> nameList = new ArrayList<String>();
    final List<SqlParserPos> posList = new ArrayList<SqlParserPos>();
}
{
    AddTableIdentifierSegment(nameList, posList)
    (
        LOOKAHEAD(2)
        <DOT>
          AddTableIdentifierSegment(nameList, posList)
    )*
    {
        SqlParserPos pos = SqlParserPos.sum(posList);
        return new SqlIdentifier(nameList, null, pos, posList);
    }
}

/**
 * Parses a comma-separated list of compound identifiers.
 */
void AddCompoundIdentifierTypeCommaList(List<SqlNode> list, List<SqlNode> extendList) :
{
}
{
    AddCompoundIdentifierType(list, extendList)
    (<COMMA> AddCompoundIdentifierType(list, extendList))*
}

/**
 * List of compound identifiers in parentheses. The position extends from the
 * open parenthesis to the close parenthesis.
 */
Pair<SqlNodeList, SqlNodeList> ParenthesizedCompoundIdentifierList() :
{
    final Span s;
    final List<SqlNode> list = new ArrayList<SqlNode>();
    final List<SqlNode> extendList = new ArrayList<SqlNode>();
}
{
    <LPAREN> { s = span(); }
    AddCompoundIdentifierTypeCommaList(list, extendList)
    <RPAREN> {
        return Pair.of(new SqlNodeList(list, s.end(this)), new SqlNodeList(extendList, s.end(this)));
    }
}