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

Example 16 with Expression

use of org.apache.carbondata.core.scan.expression.Expression 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 17 with Expression

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

the class QueryUtil method getAllFilterDimensions.

public static void getAllFilterDimensions(FilterResolverIntf filterResolverTree, Set<CarbonDimension> filterDimensions, Set<CarbonMeasure> filterMeasure) {
    if (null == filterResolverTree) {
        return;
    }
    List<ColumnExpression> dimensionResolvedInfos = new ArrayList<ColumnExpression>();
    Expression filterExpression = filterResolverTree.getFilterExpression();
    addColumnDimensions(filterExpression, filterDimensions, filterMeasure);
    for (ColumnExpression info : dimensionResolvedInfos) {
        if (info.isDimension() && info.getDimension().getNumberOfChild() > 0) {
            filterDimensions.add(info.getDimension());
        }
    }
}

Example 18 with Expression

use of org.apache.carbondata.core.scan.expression.Expression 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 19 with Expression

use of org.apache.carbondata.core.scan.expression.Expression 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 20 with Expression

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

the class FilterUtilTest method testCheckIfLeftExpressionRequireEvaluation.

@Test
public void testCheckIfLeftExpressionRequireEvaluation() {
    List<Expression> children = new ArrayList<>();
    ListExpression expression = new ListExpression(children);
    boolean result = FilterUtil.checkIfLeftExpressionRequireEvaluation(expression);
    assertTrue(result);
}