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

Example 11 with LiteralExpression

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

the class CarbondataSplitManager method parseFilterExpression.

/**
   * Convert presto-TupleDomain predication into Carbon scan express condition
   * @param originalConstraint  presto-TupleDomain
   * @param carbonTable
   * @return
   */
public Expression parseFilterExpression(TupleDomain<ColumnHandle> originalConstraint, CarbonTable carbonTable) {
    ImmutableList.Builder<Expression> filters = ImmutableList.builder();
    Domain domain = null;
    for (ColumnHandle c : originalConstraint.getDomains().get().keySet()) {
        CarbondataColumnHandle cdch = (CarbondataColumnHandle) c;
        Type type = cdch.getColumnType();
        List<CarbonColumn> ccols = carbonTable.getCreateOrderColumn(carbonTable.getFactTableName());
        Optional<CarbonColumn> target = ccols.stream().filter(a -> a.getColName().equals(cdch.getColumnName())).findFirst();
        if (target.get() == null)
            return null;
        DataType coltype = target.get().getDataType();
        ColumnExpression colExpression = new ColumnExpression(cdch.getColumnName(), target.get().getDataType());
        //colExpression.setColIndex(cs.getSchemaOrdinal());
        colExpression.setDimension(target.get().isDimension());
        colExpression.setDimension(carbonTable.getDimensionByName(carbonTable.getFactTableName(), cdch.getColumnName()));
        colExpression.setCarbonColumn(target.get());
        domain = originalConstraint.getDomains().get().get(c);
        checkArgument(domain.getType().isOrderable(), "Domain type must be orderable");
        if (domain.getValues().isNone()) {
        }
        if (domain.getValues().isAll()) {
        }
        List<Object> singleValues = new ArrayList<>();
        List<Expression> rangeFilter = new ArrayList<>();
        for (Range range : domain.getValues().getRanges().getOrderedRanges()) {
            // Already checked
            checkState(!range.isAll());
            if (range.isSingleValue()) {
                singleValues.add(range.getLow().getValue());
            } else {
                List<String> rangeConjuncts = new ArrayList<>();
                if (!range.getLow().isLowerUnbounded()) {
                    Object value = ConvertDataByType(range.getLow().getValue(), type);
                    switch(range.getLow().getBound()) {
                        case ABOVE:
                            if (type == TimestampType.TIMESTAMP) {
                            //todo not now
                            } else {
                                GreaterThanExpression greater = new GreaterThanExpression(colExpression, new LiteralExpression(value, coltype));
                                rangeFilter.add(greater);
                            }
                            break;
                        case EXACTLY:
                            GreaterThanEqualToExpression greater = new GreaterThanEqualToExpression(colExpression, new LiteralExpression(value, coltype));
                            rangeFilter.add(greater);
                            break;
                        case BELOW:
                            throw new IllegalArgumentException("Low marker should never use BELOW bound");
                        default:
                            throw new AssertionError("Unhandled bound: " + range.getLow().getBound());
                    }
                }
                if (!range.getHigh().isUpperUnbounded()) {
                    Object value = ConvertDataByType(range.getHigh().getValue(), type);
                    switch(range.getHigh().getBound()) {
                        case ABOVE:
                            throw new IllegalArgumentException("High marker should never use ABOVE bound");
                        case EXACTLY:
                            LessThanEqualToExpression less = new LessThanEqualToExpression(colExpression, new LiteralExpression(value, coltype));
                            rangeFilter.add(less);
                            break;
                        case BELOW:
                            LessThanExpression less2 = new LessThanExpression(colExpression, new LiteralExpression(value, coltype));
                            rangeFilter.add(less2);
                            break;
                        default:
                            throw new AssertionError("Unhandled bound: " + range.getHigh().getBound());
                    }
                }
            }
        }
        if (singleValues.size() == 1) {
            Expression ex = null;
            if (coltype.equals(DataType.STRING)) {
                ex = new EqualToExpression(colExpression, new LiteralExpression(((Slice) singleValues.get(0)).toStringUtf8(), coltype));
            } else
                ex = new EqualToExpression(colExpression, new LiteralExpression(singleValues.get(0), coltype));
            filters.add(ex);
        } else if (singleValues.size() > 1) {
            ListExpression candidates = null;
            List<Expression> exs = singleValues.stream().map((a) -> {
                return new LiteralExpression(ConvertDataByType(a, type), coltype);
            }).collect(Collectors.toList());
            candidates = new ListExpression(exs);
            if (candidates != null)
                filters.add(new InExpression(colExpression, candidates));
        } else if (rangeFilter.size() > 0) {
            if (rangeFilter.size() > 1) {
                Expression finalFilters = new OrExpression(rangeFilter.get(0), rangeFilter.get(1));
                if (rangeFilter.size() > 2) {
                    for (int i = 2; i < rangeFilter.size(); i++) {
                        filters.add(new AndExpression(finalFilters, rangeFilter.get(i)));
                    }
                }
            } else if (//only have one value
            rangeFilter.size() == 1)
                filters.add(rangeFilter.get(0));
        }
    }
    Expression finalFilters;
    List<Expression> tmp = filters.build();
    if (tmp.size() > 1) {
        finalFilters = new AndExpression(tmp.get(0), tmp.get(1));
        if (tmp.size() > 2) {
            for (int i = 2; i < tmp.size(); i++) {
                finalFilters = new AndExpression(finalFilters, tmp.get(i));
            }
        }
    } else if (tmp.size() == 1)
        finalFilters = tmp.get(0);
    else
        //no filter
        return null;
    return finalFilters;
}

Example 12 with LiteralExpression

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

the class ObjectSerializationUtilTest method testConvertStringToObject.

@Test
public void testConvertStringToObject() throws Exception {
    Expression expression = new EqualToExpression(new ColumnExpression("c1", DataType.STRING), new LiteralExpression("a", DataType.STRING));
    String string = ObjectSerializationUtil.convertObjectToString(expression);
    Assert.assertTrue(string != null);
    Object object = ObjectSerializationUtil.convertStringToObject(string);
    Assert.assertTrue(object != null);
    Assert.assertTrue(object instanceof Expression);
}

Example 13 with LiteralExpression

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

the class RangeFilterProcessorTest method createFilterTree.

@Test
public void createFilterTree() {
    Expression inputFilter;
    boolean result = false;
    ColumnExpression cola = new ColumnExpression("a", DataType.STRING);
    cola.setDimension(true);
    ColumnSchema empColumnSchema = new ColumnSchema();
    empColumnSchema.setColumnName("empNameCol");
    empColumnSchema.setColumnUniqueId("empNameCol");
    empColumnSchema.setDimensionColumn(true);
    empColumnSchema.setEncodingList(Arrays.asList(Encoding.DICTIONARY));
    empColumnSchema.setDataType(DataType.STRING);
    CarbonDimension empDimension = new CarbonDimension(empColumnSchema, 0, 0, 0, 0, 0);
    cola.setDimension(empDimension);
    Expression greaterThan = new GreaterThanEqualToExpression(cola, new LiteralExpression("11", DataType.STRING));
    ColumnExpression colb = new ColumnExpression("a", DataType.STRING);
    colb.setDimension(true);
    colb.setDimension(empDimension);
    Expression lessThan = new LessThanEqualToExpression(colb, new LiteralExpression("20", DataType.STRING));
    inputFilter = new AndExpression(greaterThan, lessThan);
    Expression output = new AndExpression(new RangeExpression(new GreaterThanEqualToExpression(new ColumnExpression("a", DataType.STRING), new LiteralExpression("11", DataType.STRING)), new LessThanEqualToExpression(new ColumnExpression("a", DataType.STRING), new LiteralExpression("20", DataType.STRING))), new TrueExpression(null));
    FilterOptimizer rangeFilterOptimizer = new RangeFilterOptmizer(new FilterOptimizerBasic(), inputFilter);
    rangeFilterOptimizer.optimizeFilter();
    result = checkBothTrees(inputFilter, output);
    Assert.assertTrue(result);
}

Example 14 with LiteralExpression

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

the class RangeFilterProcessorTest method createFilterTree_flavor1.

@Test
public void createFilterTree_flavor1() {
    // Build 3rd BTree a >= '11' and a > '12' and a <= '20' and a <= '15'
    Expression inputFilter;
    boolean result = false;
    ColumnSchema empColumnSchema = new ColumnSchema();
    empColumnSchema.setColumnName("a");
    empColumnSchema.setColumnUniqueId("a");
    empColumnSchema.setDimensionColumn(true);
    empColumnSchema.setEncodingList(Arrays.asList(Encoding.DICTIONARY));
    empColumnSchema.setDataType(DataType.STRING);
    CarbonDimension empDimension = new CarbonDimension(empColumnSchema, 0, 0, 0, 0, 0);
    ColumnExpression cola1 = new ColumnExpression("a", DataType.STRING);
    cola1.setDimension(true);
    cola1.setDimension(empDimension);
    ColumnExpression cola2 = new ColumnExpression("a", DataType.STRING);
    cola2.setDimension(true);
    cola2.setDimension(empDimension);
    ColumnExpression cola3 = new ColumnExpression("a", DataType.STRING);
    cola3.setDimension(true);
    cola3.setDimension(empDimension);
    ColumnExpression cola4 = new ColumnExpression("a", DataType.STRING);
    cola4.setDimension(true);
    cola4.setDimension(empDimension);
    Expression lessThan1 = new LessThanEqualToExpression(cola1, new LiteralExpression("15", DataType.STRING));
    Expression lessThan2 = new LessThanEqualToExpression(cola2, new LiteralExpression("20", DataType.STRING));
    Expression greaterThan1 = new GreaterThanExpression(cola3, new LiteralExpression("12", DataType.STRING));
    Expression greaterThan2 = new GreaterThanEqualToExpression(cola4, new LiteralExpression("11", DataType.STRING));
    Expression And1 = new AndExpression(new NotEqualsExpression(null, null), greaterThan2);
    Expression And2 = new AndExpression(And1, greaterThan1);
    Expression And3 = new AndExpression(And2, lessThan2);
    inputFilter = new AndExpression(And3, lessThan1);
    // Build The output
    ColumnExpression colb1 = new ColumnExpression("a", DataType.STRING);
    cola1.setDimension(true);
    cola1.setDimension(empDimension);
    ColumnExpression colb2 = new ColumnExpression("a", DataType.STRING);
    cola2.setDimension(true);
    cola2.setDimension(empDimension);
    Expression greaterThanb1 = new GreaterThanExpression(cola3, new LiteralExpression("12", DataType.STRING));
    Expression lessThanb1 = new LessThanEqualToExpression(cola1, new LiteralExpression("15", DataType.STRING));
    Expression Andb1 = new AndExpression(new NotEqualsExpression(null, null), new TrueExpression(null));
    Expression Andb2 = new AndExpression(Andb1, new RangeExpression(greaterThanb1, lessThanb1));
    Expression Andb3 = new AndExpression(Andb2, new TrueExpression(null));
    FilterOptimizer rangeFilterOptimizer = new RangeFilterOptmizer(new FilterOptimizerBasic(), inputFilter);
    rangeFilterOptimizer.optimizeFilter();
    result = checkBothTrees(inputFilter, new AndExpression(Andb3, new TrueExpression(null)));
    // no change
    Assert.assertTrue(result);
}

Example 15 with LiteralExpression

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

the class FilterUtilTest method testIsExpressionNeedsToResolved.

@Test
public void testIsExpressionNeedsToResolved() {
    boolean isIncludeFilter = true;
    Object obj = "test";
    LiteralExpression literalExpression = new LiteralExpression(obj, DataType.STRING);
    boolean result = FilterUtil.isExpressionNeedsToResolved(literalExpression, isIncludeFilter);
    assertFalse(result);
}