Examples of org.apache.tajo.engine.exception.NoSuchColumnException

Package org.apache.tajo.engine.exception

Examples of org.apache.tajo.engine.exception.NoSuchColumnException

org.apache.tajo.engine.exception.NoSuchColumnException

          }
        }
      }


      if (relationOp == null) {
        throw new NoSuchColumnException(columnRef.getCanonicalName());
      }


      Schema schema = relationOp.getTableSchema();


      Column column = schema.getColumnByFQN(columnRef.getCanonicalName());

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  public String getNormalizedColumnName(QueryBlock block, ColumnReferenceExpr columnRef)
      throws PlanningException {
    Column found = resolveColumn(block, columnRef);
    if (found == null) {
      throw new NoSuchColumnException(columnRef.getCanonicalName());
    }
    return found.getQualifiedName();
  }

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      qualifier = columnRef.getQualifier();
      canonicalName = columnRef.getCanonicalName();
    } else {
      String resolvedDatabaseName = resolveDatabase(block, columnRef.getQualifier());
      if (resolvedDatabaseName == null) {
        throw new NoSuchColumnException(columnRef.getQualifier());
      }
      qualifier = CatalogUtil.buildFQName(resolvedDatabaseName, columnRef.getQualifier());
      canonicalName = CatalogUtil.buildFQName(qualifier, columnRef.getName());
    }
    qualifiedName = CatalogUtil.buildFQName(qualifier, columnRef.getName());


    RelationNode relationOp = block.getRelation(qualifier);


    // if a column name is outside of this query block
    if (relationOp == null) {
      // TODO - nested query can only refer outer query block? or not?
      for (QueryBlock eachBlock : queryBlocks.values()) {
        if (eachBlock.existsRelation(qualifier)) {
          relationOp = eachBlock.getRelation(qualifier);
        }
      }
    }


    // If we cannot find any relation against a qualified column name
    if (relationOp == null) {
      throw new NoSuchColumnException(canonicalName);
    }


    if (block.isAlreadyRenamedTableName(CatalogUtil.extractQualifier(canonicalName))) {
      String changedName = CatalogUtil.buildFQName(
          relationOp.getCanonicalName(),
          CatalogUtil.extractSimpleName(canonicalName));
      canonicalName = changedName;
    }


    Schema schema = relationOp.getTableSchema();
    Column column = schema.getColumn(canonicalName);
    if (column == null) {
      throw new NoSuchColumnException(canonicalName);
    }


    // If code reach here, a column is found.
    // But, it may be aliased from bottom logical node.
    // If the column is aliased, the found name may not be used in upper node.

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        }
      }


      // If we cannot find any relation against a qualified column name
      if (relationOp == null) {
        throw new NoSuchColumnException(CatalogUtil.buildFQName(qualifier, "*"));
      }


      Schema schema = relationOp.getTableSchema();
      Column[] resolvedColumns = new Column[schema.size()];
      return schema.getColumns().toArray(resolvedColumns);
    } else { // if a column reference is not qualified
      // columns of every relation should be resolved.
      Iterator<RelationNode> iterator = block.getRelations().iterator();
      Schema schema;
      List<Column> resolvedColumns = TUtil.newList();


      while (iterator.hasNext()) {
        relationOp = iterator.next();
        schema = relationOp.getTableSchema();
        resolvedColumns.addAll(schema.getColumns());
      }


      if (resolvedColumns.size() == 0) {
        throw new NoSuchColumnException(asteriskExpr.toString());
      }


      return resolvedColumns.toArray(new Column[resolvedColumns.size()]);
    }
  }

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Related Classes of org.apache.tajo.engine.exception.NoSuchColumnException

org.apache.tajo.engine.planner.LogicalPlan

org.apache.tajo.engine.planner.LogicalPlanPreprocessor

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