Package net.hydromatic.optiq.tools

Examples of net.hydromatic.optiq.tools.RelConversionException

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      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) {
        columnFilter = DrillParserUtil.createCondition(new SqlIdentifier("COLUMN_NAME", SqlParserPos.ZERO),
            SqlStdOperatorTable.LIKE, node.getColumnQualifier());
      }

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

      return new SqlSelect(SqlParserPos.ZERO, null, new SqlNodeList(selectList, SqlParserPos.ZERO),
          fromClause, where, null, null, null, null, null, null);
    } catch (Exception ex) {
      throw new RelConversionException("Error while rewriting DESCRIBE query: " + ex.getMessage(), ex);
    }
  }
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      // If no schema is given in SHOW TABLES command, list tables from current schema
      SchemaPlus schema = context.getNewDefaultSchema();

      if (isRootSchema(schema)) {
        // If the default schema is a root schema, throw an error to select a default schema
        throw new RelConversionException("No schema selected. Select a schema using 'USE schema' command");
      }

      AbstractSchema drillSchema;

      try {
        drillSchema = getDrillSchema(schema);
      } catch(Exception ex) {
        throw new RelConversionException("Error while rewriting SHOW TABLES query: " + ex.getMessage(), ex);
      }

      tableSchema = drillSchema.getFullSchemaName();
    }
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  public static <T> T unwrap(Object o, Class<T> clazz) throws RelConversionException{
    if(clazz.isAssignableFrom(o.getClass())){
      return (T) o;
    }else{
      throw new RelConversionException(String.format("Failure trying to treat %s as type %s.", o.getClass().getSimpleName(), clazz.getSimpleName()));
    }
  }
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        int nArgs = function.getOperands().size();

        if (functionName.equalsIgnoreCase("flatten") ) {
          rewrite = true;
          if (function.getOperands().size() != 1) {
            throw new RelConversionException("Flatten expression expects a single input.");
          }
          newExpr = function.getOperands().get(0);
          RexBuilder builder = new RexBuilder(factory);
          flatttenExpr = builder.makeInputRef( new RelDataTypeDrillImpl(new RelDataTypeHolder(), factory), i);
        }
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  public static <T> T unwrap(Object o, Class<T> clazz) throws RelConversionException {
    if (clazz.isAssignableFrom(o.getClass())) {
      return (T) o;
    } else {
      throw new RelConversionException(String.format("Failure trying to treat %s as type %s.", o.getClass().getSimpleName(), clazz.getSimpleName()));
    }
  }
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      // If no schema is given in SHOW TABLES command, list tables from current schema
      SchemaPlus schema = context.getNewDefaultSchema();

      if (isRootSchema(schema)) {
        // If the default schema is a root schema, throw an error to select a default schema
        throw new RelConversionException("No schema selected. Select a schema using 'USE schema' command");
      }

      AbstractSchema drillSchema;

      try {
        drillSchema = getDrillSchema(schema);
      } catch(Exception ex) {
        throw new RelConversionException("Error while rewriting SHOW TABLES query: " + ex.getMessage(), ex);
      }

      tableSchema = drillSchema.getFullSchemaName();
    }
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      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) {
        columnFilter = DrillParserUtil.createCondition(new SqlIdentifier("COLUMN_NAME", SqlParserPos.ZERO),
            SqlStdOperatorTable.LIKE, node.getColumnQualifier());
      }

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

      return new SqlSelect(SqlParserPos.ZERO, null, new SqlNodeList(selectList, SqlParserPos.ZERO),
          fromClause, where, null, null, null, null, null, null);
    } catch (Exception ex) {
      throw new RelConversionException("Error while rewriting DESCRIBE query: " + ex.getMessage(), ex);
    }
  }
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Related Classes of net.hydromatic.optiq.tools.RelConversionException

  • org.apache.drill.exec.planner.physical.visitor.RewriteProjectToFlatten
  • org.apache.drill.exec.planner.sql.handlers.AbstractSqlHandler
  • org.apache.drill.exec.planner.sql.handlers.DescribeTableHandler
  • org.apache.drill.exec.planner.sql.handlers.ShowTablesHandler
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