Beispiel #1
0
  // test that if scan columns are specified the output schema of
  // a scan node consists of those columns
  public void testOutputSchemaSomeScanColumns() {
    AbstractScanPlanNode dut = new SeqScanPlanNode();
    dut.setTargetTableName(TABLE1);

    int[] scan_col_indexes = {1, 3};
    ArrayList<SchemaColumn> scanColumns = new ArrayList<SchemaColumn>();
    for (int index : scan_col_indexes) {
      TupleValueExpression tve = new TupleValueExpression();
      tve.setTableName(TABLE1);
      tve.setColumnName(COLS[index]);
      tve.setColumnAlias(COLS[index]);
      tve.setValueType(COLTYPES[index]);
      tve.setValueSize(COLTYPES[index].getLengthInBytesForFixedTypes());
      SchemaColumn col = new SchemaColumn(TABLE1, COLS[index], COLS[index], tve);
      scanColumns.add(col);
    }
    dut.setScanColumns(scanColumns);

    // Should be able to do this safely and repeatably multiple times
    for (int i = 0; i < 3; i++) {
      dut.generateOutputSchema(m_voltdb.getDatabase());
      NodeSchema dut_schema = dut.getOutputSchema();
      System.out.println(dut_schema.toString());
      assertEquals(scan_col_indexes.length, dut_schema.size());
      for (int index : scan_col_indexes) {
        SchemaColumn col = dut_schema.find(TABLE1, COLS[index], "");
        assertNotNull(col);
        assertEquals(col.getExpression().getExpressionType(), ExpressionType.VALUE_TUPLE);
        assertEquals(col.getExpression().getValueType(), COLTYPES[index]);
      }
    }
  }
Beispiel #2
0
  // test that if no scan columns are specified, the output schema of
  // a scan node is the schema of the table
  public void testOutputSchemaNoScanColumns() {
    AbstractScanPlanNode dut = new SeqScanPlanNode();
    dut.setTargetTableName(TABLE1);

    dut.generateOutputSchema(m_voltdb.getDatabase());
    NodeSchema dut_schema = dut.getOutputSchema();
    System.out.println(dut_schema.toString());
    assertEquals(COLS.length, dut_schema.size());
    for (int i = 0; i < COLS.length; ++i) {
      SchemaColumn col = dut_schema.find(TABLE1, COLS[i], COLS[i]);
      assertNotNull(col);
      assertEquals(col.getExpression().getExpressionType(), ExpressionType.VALUE_TUPLE);
      assertEquals(col.getExpression().getValueType(), COLTYPES[i]);
    }
  }
Beispiel #3
0
  // test that if someone provides their own inline projection
  // that the output schema of the scan node consists of the output
  // schema of the projection.  Updates will do this so that the
  // inlined projection fills the values of the output tuples correctly
  // before it attempts to update them
  public void testOutputSchemaOverriddenProjection() {
    AbstractScanPlanNode dut = new SeqScanPlanNode();
    dut.setTargetTableName(TABLE1);

    // Create an output schema like we might see for an inlined projection
    // generated for update.  We'll have 4 output columns, the first will
    // be the tuple address, the second one a parameter expression, next
    // will be a constant, and the other will be a more complex expression
    // that uses some TVEs.
    NodeSchema proj_schema = new NodeSchema();
    String[] cols = new String[4];

    TupleAddressExpression col1_exp = new TupleAddressExpression();
    proj_schema.addColumn(new SchemaColumn("", "tuple_address", "tuple_address", col1_exp));
    cols[0] = "tuple_address";

    // update column 1 with a parameter value
    ParameterValueExpression col2_exp = new ParameterValueExpression();
    col2_exp.setParameterIndex(0);
    col2_exp.setValueType(COLTYPES[1]);
    col2_exp.setValueSize(COLTYPES[1].getLengthInBytesForFixedTypes());
    // XXX I'm not sure what to do with the name for the updated column yet.
    // I think it should be an alias and not the original table name/col name
    proj_schema.addColumn(new SchemaColumn(TABLE1, COLS[1], COLS[1], col2_exp));
    cols[1] = COLS[1];

    // Update column 3 with a constant value
    ConstantValueExpression col3_exp = new ConstantValueExpression();
    col3_exp.setValueType(COLTYPES[3]);
    col3_exp.setValueSize(COLTYPES[3].getLengthInBytesForFixedTypes());
    col3_exp.setValue("3.14159");
    proj_schema.addColumn(new SchemaColumn(TABLE1, COLS[3], COLS[3], col3_exp));
    cols[2] = COLS[3];

    // update column 4 with a sum of columns 0 and 2
    OperatorExpression col4_exp = new OperatorExpression();
    col4_exp.setValueType(COLTYPES[4]);
    col4_exp.setValueSize(COLTYPES[4].getLengthInBytesForFixedTypes());
    col4_exp.setExpressionType(ExpressionType.OPERATOR_PLUS);
    TupleValueExpression left = new TupleValueExpression();
    left.setTableName(TABLE1);
    left.setColumnName(COLS[0]);
    left.setColumnAlias(COLS[0]);
    left.setValueType(COLTYPES[0]);
    left.setValueSize(COLTYPES[0].getLengthInBytesForFixedTypes());
    TupleValueExpression right = new TupleValueExpression();
    right.setTableName(TABLE1);
    right.setColumnName(COLS[2]);
    right.setColumnAlias(COLS[2]);
    right.setValueType(COLTYPES[2]);
    right.setValueSize(COLTYPES[2].getLengthInBytesForFixedTypes());
    col4_exp.setLeft(left);
    col4_exp.setRight(right);
    proj_schema.addColumn(new SchemaColumn(TABLE1, COLS[4], "C1", col4_exp));
    cols[3] = COLS[4];

    ProjectionPlanNode proj_node = new ProjectionPlanNode();
    proj_node.setOutputSchema(proj_schema);
    dut.addInlinePlanNode(proj_node);

    System.out.println("ProjSchema: " + proj_schema.toString());

    dut.generateOutputSchema(m_voltdb.getDatabase());
    NodeSchema dut_schema = dut.getOutputSchema();
    System.out.println(dut_schema.toString());
    for (int i = 0; i < cols.length; i++) {
      SchemaColumn col = null;
      if (i == 0) {
        col = dut_schema.find("", cols[i], cols[i]);
      } else {
        col = dut_schema.find(TABLE1, cols[i], cols[i]);
      }
      assertNotNull(col);
      assertEquals(col.getExpression().getExpressionType(), ExpressionType.VALUE_TUPLE);
    }
  }