Examples with Expression org.apache.carbondata.core.scan.expression.Expression used on opensource projects

Example 1 with Expression

use of org.apache.carbondata.core.scan.expression.Expression in project carbondata by apache.

the class RangeExpression method getLiteralsResult.

private void getLiteralsResult(Expression expression, List<ExpressionResult> listOfExp) {
    for (Expression child : expression.getChildren()) {
        if (child instanceof LiteralExpression) {
            ExpressionResult colExp = ((LiteralExpression) child).getExpressionResult();
            listOfExp.add(colExp);
        } else {
            getLiteralsResult(child, listOfExp);
        }
    }
}

Example 2 with Expression

use of org.apache.carbondata.core.scan.expression.Expression in project carbondata by apache.

the class BinaryLogicalExpression method getColumnList.

private void getColumnList(Expression expression, List<ColumnExpression> lst) {
    if (expression instanceof ColumnExpression) {
        ColumnExpression colExp = (ColumnExpression) expression;
        boolean found = false;
        for (ColumnExpression currentColExp : lst) {
            if (currentColExp.getColumnName().equals(colExp.getColumnName())) {
                found = true;
                colExp.setColIndex(currentColExp.getColIndex());
                break;
            }
        }
        if (!found) {
            colExp.setColIndex(lst.size());
            lst.add(colExp);
        }
    }
    for (Expression child : expression.getChildren()) {
        getColumnList(child, lst);
    }
}

Example 3 with Expression

use of org.apache.carbondata.core.scan.expression.Expression in project carbondata by apache.

the class BinaryLogicalExpression method getExpressionResultList.

private void getExpressionResultList(Expression binaryConditionalExpression, List<ExpressionResult> listOfExp) {
    if (binaryConditionalExpression instanceof LiteralExpression) {
        ExpressionResult colExp = ((LiteralExpression) binaryConditionalExpression).getExpressionResult();
        listOfExp.add(colExp);
    }
    for (Expression child : binaryConditionalExpression.getChildren()) {
        getExpressionResultList(child, listOfExp);
    }
}

Example 4 with Expression

use of org.apache.carbondata.core.scan.expression.Expression in project carbondata by apache.

the class ListExpressionUnitTest method test.

@Test
public void test() throws FilterUnsupportedException, FilterIllegalMemberException {
    ColumnExpression left = new ColumnExpression("left_name", DataType.STRING);
    left.setColIndex(0);
    ColumnExpression right = new ColumnExpression("right_name", DataType.STRING);
    right.setColIndex(1);
    List<Expression> children = new ArrayList<>();
    children.add(left);
    children.add(right);
    listExpression = new ListExpression(children);
    RowImpl value = new RowImpl();
    String row = "Row is for left";
    String row1 = "I am row 1";
    Object[] objectRow = { row, row1 };
    value.setValues(objectRow);
    String expected_value = "Row is for left";
    ExpressionResult result = listExpression.evaluate(value);
    assertThat(expected_value, is(equalTo(result.getList().get(0).getString())));
}

Example 5 with Expression

use of org.apache.carbondata.core.scan.expression.Expression in project carbondata by apache.

the class FilterUtilTest method testCheckIfExpressionContainsColumnWithExpressionNotInstanceOfColumnExpression.

@Test
public void testCheckIfExpressionContainsColumnWithExpressionNotInstanceOfColumnExpression() {
    String columnName = "IMEI";
    Expression expression = new LiteralExpression(columnName, DataType.STRING);
    boolean result = FilterUtil.checkIfExpressionContainsColumn(expression);
    assertFalse(result);
}