Package org.eigenbase.sql

Examples of org.eigenbase.sql.SqlNode

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  /** Populates a materialization record, converting a table path
   * (essentially a list of strings, like ["hr", "sales"]) into a table object
   * that can be used in the planning process. */
  void populate(Materialization materialization) {
    SqlParser parser = SqlParser.create(materialization.sql);
    SqlNode node;
    try {
      node = parser.parseStmt();
    } catch (SqlParseException e) {
      throw new RuntimeException("parse failed", e);
    }
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      ready();
    }
    ensure(State.STATE_2_READY);
    SqlParser parser = SqlParser.create(parserFactory, sql,
        lex.quoting, lex.unquotedCasing, lex.quotedCasing);
    SqlNode sqlNode = parser.parseStmt();
    state = State.STATE_3_PARSED;
    return sqlNode;
  }
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  /** Populates a materialization record, converting a table path
   * (essentially a list of strings, like ["hr", "sales"]) into a table object
   * that can be used in the planning process. */
  void populate(Materialization materialization) {
    SqlParser parser = SqlParser.create(materialization.sql);
    SqlNode node;
    try {
      node = parser.parseStmt();
    } catch (SqlParseException e) {
      throw new RuntimeException("parse failed", e);
    }
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      ready();
    }
    ensure(State.STATE_2_READY);
    SqlParser parser = SqlParser.create(parserFactory, sql,
        lex.quoting, lex.unquotedCasing, lex.quotedCasing);
    SqlNode sqlNode = parser.parseStmt();
    state = State.STATE_3_PARSED;
    return sqlNode;
  }
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  public class ViewExpanderImpl implements ViewExpander {
    public RelNode expandView(RelDataType rowType, String queryString,
        List<String> schemaPath) {
      SqlParser parser = SqlParser.create(parserFactory, queryString,
          lex.quoting, lex.unquotedCasing, lex.quotedCasing);
      SqlNode sqlNode;
      try {
        sqlNode = parser.parseQuery();
      } catch (SqlParseException e) {
        throw new RuntimeException("parse failed", e);
      }

      final OptiqCatalogReader catalogReader =
          createCatalogReader().withSchemaPath(schemaPath);
      SqlValidator validator = new OptiqSqlValidator(
          operatorTable, catalogReader, typeFactory);
      SqlNode validatedSqlNode = validator.validate(sqlNode);

      SqlToRelConverter sqlToRelConverter = new SqlToRelConverter(
          null, validator, catalogReader, planner,
          createRexBuilder(), convertletTable);
      sqlToRelConverter.setTrimUnusedFields(false);
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    super(stream);
  }

  @Override
  public SqlNode parseSqlExpressionEof() throws Exception {
    SqlNode originalSqlNode = super.parseSqlExpressionEof();
    return originalSqlNode.accept(new CompoundIdentifierConverter());
  }
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    return originalSqlNode.accept(new CompoundIdentifierConverter());
  }

  @Override
  public SqlNode parseSqlStmtEof() throws Exception {
    SqlNode originalSqlNode = super.parseSqlStmtEof();
    return originalSqlNode.accept(new CompoundIdentifierConverter());
  }
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  }

  @Override
  public PhysicalPlan getPlan(SqlNode sqlNode) throws ValidationException, RelConversionException, IOException {

    SqlNode rewrittenSqlNode = rewrite(sqlNode);
    SqlNode validated = validateNode(rewrittenSqlNode);
    RelNode rel = convertToRel(validated);

    /* Traverse the tree and replace the convert_from, convert_to function to actual implementations
     * Eg: convert_from(EXPR, 'JSON') be converted to convert_fromjson(EXPR);
     * TODO: Ideally all function rewrites would move here instead of DrillOptiq
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    super(planner, context);
  }

  @Override
  public PhysicalPlan getPlan(SqlNode node) throws ValidationException, RelConversionException, IOException {
    SqlNode sqlNode = rewrite(node);
    SqlNode validated = validateNode(sqlNode);
    RelNode rel = convertToRel(validated);
    DrillRel drel = convertToDrel(rel);
    log("Optiq Logical", rel);
    log("Drill Logical", drel);
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    try {
      List<SqlNode> selectList = ImmutableList.of((SqlNode) new SqlIdentifier("COLUMN_NAME", SqlParserPos.ZERO),
          new SqlIdentifier("DATA_TYPE", SqlParserPos.ZERO),
          new SqlIdentifier("IS_NULLABLE", SqlParserPos.ZERO));

      SqlNode fromClause = new SqlIdentifier(
          ImmutableList.of("INFORMATION_SCHEMA", "COLUMNS"), null, SqlParserPos.ZERO, null);

      final SqlIdentifier table = node.getTable();
      final SchemaPlus schema = findSchema(context.getRootSchema(), context.getNewDefaultSchema(),
          Util.skipLast(table.names));
      final String tableName = Util.last(table.names);

      if (schema.getTable(tableName) == null) {
        throw new RelConversionException(String.format("Table %s is not valid", Util.sepList(table.names, ".")));
      }

      SqlNode schemaCondition = null;
      if (!isRootSchema(schema)) {
        AbstractSchema drillSchema = getDrillSchema(schema);

        schemaCondition = DrillParserUtil.createCondition(
            new SqlIdentifier("TABLE_SCHEMA", SqlParserPos.ZERO),
            SqlStdOperatorTable.EQUALS,
            SqlLiteral.createCharString(drillSchema.getFullSchemaName(), CHARSET, SqlParserPos.ZERO)
        );
      }

      SqlNode where = DrillParserUtil.createCondition(
          new SqlIdentifier("TABLE_NAME", SqlParserPos.ZERO),
          SqlStdOperatorTable.EQUALS,
          SqlLiteral.createCharString(tableName, CHARSET, SqlParserPos.ZERO));

      where = DrillParserUtil.createCondition(schemaCondition, SqlStdOperatorTable.AND, where);

      SqlNode columnFilter = null;
      if (node.getColumn() != null) {
        columnFilter = DrillParserUtil.createCondition(new SqlIdentifier("COLUMN_NAME", SqlParserPos.ZERO),
            SqlStdOperatorTable.EQUALS,
            SqlLiteral.createCharString(node.getColumn().toString(), CHARSET, SqlParserPos.ZERO));
      } else if (node.getColumnQualifier() != null) {
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Related Classes of org.eigenbase.sql.SqlNode

  • net.hydromatic.optiq.prepare.OptiqMaterializer
  • net.hydromatic.optiq.prepare.PlannerImpl
  • net.hydromatic.optiq.prepare.PlannerImpl$ViewExpanderImpl
  • org.apache.drill.exec.planner.sql.DrillSqlWorker
  • org.apache.drill.exec.planner.sql.handlers.CreateTableHandler
  • org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler
  • org.apache.drill.exec.planner.sql.handlers.DescribeTableHandler
  • org.apache.drill.exec.planner.sql.handlers.ExplainHandler
  • org.apache.drill.exec.planner.sql.handlers.SetOptionHandler
  • org.apache.drill.exec.planner.sql.handlers.ShowSchemasHandler
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