Examples of com.google.visualization.datasource.query.scalarfunction.Constant

Package com.google.visualization.datasource.query.scalarfunction

Examples of com.google.visualization.datasource.query.scalarfunction.Constant

com.google.visualization.datasource.query.scalarfunction.Constant
A constant function, i.e., a 0-ary function that always returns the same value, given at construction time. The value can be of any supported {@link ValueType}. @author Liron L.


    // selection with modulo ('weight' is a column id): "select weight, weight % 10"
    Query q = new Query();


    AbstractColumn col1 = new ScalarFunctionColumn(
        Lists.<AbstractColumn>newArrayList(), new Constant(new NumberValue(10)));
    AbstractColumn col2 = new ScalarFunctionColumn(
        Lists.<AbstractColumn>newArrayList(new SimpleColumn("weight"), col1),
        Modulo.getInstance());


    // Add selection

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    selection.addColumn(new SimpleColumn("name"));
    selection.addColumn(new SimpleColumn("weight"));
    q.setSelection(selection);


    AbstractColumn col1 = new ScalarFunctionColumn(
      Lists.<AbstractColumn>newArrayList(), new Constant(new NumberValue(2)));
    AbstractColumn col2 = new ScalarFunctionColumn(
      Lists.<AbstractColumn>newArrayList(new SimpleColumn("weight"), col1),
      Modulo.getInstance());


    QueryFilter filter = new ColumnValueFilter(col2,

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    Query query = new Query();
    QuerySelection selection = new QuerySelection(); // SELECT (sum(sales) / 7)
    List<AbstractColumn> columns = Lists.newArrayList();
    columns.add(new AggregationColumn(new SimpleColumn("Sales"), AggregationType.SUM));
    columns.add(new ScalarFunctionColumn(Lists.<AbstractColumn>newArrayList(),
        new Constant(new NumberValue(7))));
    AbstractColumn selectedColumn = new ScalarFunctionColumn(columns, Quotient.getInstance());
    selection.addColumn(selectedColumn);


    query.setSelection(selection);
    QueryGroup group = new QueryGroup();

View Full Code Here


        // selection with modulo ('weight' is a column id): "select weight, weight % 10"
        Query q = new Query();


        AbstractColumn col1 = new ScalarFunctionColumn(
                Lists.<AbstractColumn>newArrayList(), new Constant(new NumberValue(10)));
        AbstractColumn col2 = new ScalarFunctionColumn(
                Lists.<AbstractColumn>newArrayList(new SimpleColumn("weight"), col1),
                Modulo.getInstance());


        // Add selection

View Full Code Here

        selection.addColumn(new SimpleColumn("name"));
        selection.addColumn(new SimpleColumn("weight"));
        q.setSelection(selection);


        AbstractColumn col1 = new ScalarFunctionColumn(
                Lists.<AbstractColumn>newArrayList(), new Constant(new NumberValue(2)));
        AbstractColumn col2 = new ScalarFunctionColumn(
                Lists.<AbstractColumn>newArrayList(new SimpleColumn("weight"), col1),
                Modulo.getInstance());


        QueryFilter filter = new ColumnValueFilter(col2,

View Full Code Here

        Query query = new Query();
        QuerySelection selection = new QuerySelection(); // SELECT (sum(sales) / 7)
        List<AbstractColumn> columns = Lists.newArrayList();
        columns.add(new AggregationColumn(new SimpleColumn("Sales"), AggregationType.SUM));
        columns.add(new ScalarFunctionColumn(Lists.<AbstractColumn>newArrayList(),
                new Constant(new NumberValue(7))));
        AbstractColumn selectedColumn = new ScalarFunctionColumn(columns, Quotient.getInstance());
        selection.addColumn(selectedColumn);


        query.setSelection(selection);
        QueryGroup group = new QueryGroup();

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      case DECIMAL_LITERAL:
      case STRING_LITERAL:
      case OP_MINUS:
        value = literal();
         result = new ScalarFunctionColumn(new ArrayList(),
           new Constant(value));
        break;
      case KW_MIN:
      case KW_MAX:
      case KW_AVG:
      case KW_COUNT:

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Related Classes of com.google.visualization.datasource.query.scalarfunction.Constant

com.google.visualization.datasource.query.engine.QueryEngineTest

com.google.visualization.datasource.query.parser.QueryParser

com.google.visualization.datasource.base.InvalidQueryException

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