Examples with IfExpression org.apache.drill.common.expression.IfExpression used on opensource projects

Example 1 with IfExpression

use of org.apache.drill.common.expression.IfExpression in project drill by apache.

the class StreamingAggBatch method createAggregatorInternal.

private StreamingAggregator createAggregatorInternal() throws SchemaChangeException, ClassTransformationException, IOException {
    ClassGenerator<StreamingAggregator> cg = CodeGenerator.getRoot(StreamingAggTemplate.TEMPLATE_DEFINITION, context.getFunctionRegistry(), context.getOptions());
    cg.getCodeGenerator().plainJavaCapable(true);
    // Uncomment out this line to debug the generated code.
    //    cg.getCodeGenerator().saveCodeForDebugging(true);
    container.clear();
    LogicalExpression[] keyExprs = new LogicalExpression[popConfig.getKeys().size()];
    LogicalExpression[] valueExprs = new LogicalExpression[popConfig.getExprs().size()];
    TypedFieldId[] keyOutputIds = new TypedFieldId[popConfig.getKeys().size()];
    ErrorCollector collector = new ErrorCollectorImpl();
    for (int i = 0; i < keyExprs.length; i++) {
        final NamedExpression ne = popConfig.getKeys().get(i);
        final LogicalExpression expr = ExpressionTreeMaterializer.materialize(ne.getExpr(), incoming, collector, context.getFunctionRegistry());
        if (expr == null) {
            continue;
        }
        keyExprs[i] = expr;
        final MaterializedField outputField = MaterializedField.create(ne.getRef().getAsUnescapedPath(), expr.getMajorType());
        @SuppressWarnings("resource") final ValueVector vector = TypeHelper.getNewVector(outputField, oContext.getAllocator());
        keyOutputIds[i] = container.add(vector);
    }
    for (int i = 0; i < valueExprs.length; i++) {
        final NamedExpression ne = popConfig.getExprs().get(i);
        final LogicalExpression expr = ExpressionTreeMaterializer.materialize(ne.getExpr(), incoming, collector, context.getFunctionRegistry());
        if (expr instanceof IfExpression) {
            throw UserException.unsupportedError(new UnsupportedOperationException("Union type not supported in aggregate functions")).build(logger);
        }
        if (expr == null) {
            continue;
        }
        final MaterializedField outputField = MaterializedField.create(ne.getRef().getAsUnescapedPath(), expr.getMajorType());
        @SuppressWarnings("resource") ValueVector vector = TypeHelper.getNewVector(outputField, oContext.getAllocator());
        TypedFieldId id = container.add(vector);
        valueExprs[i] = new ValueVectorWriteExpression(id, expr, true);
    }
    if (collector.hasErrors()) {
        throw new SchemaChangeException("Failure while materializing expression. " + collector.toErrorString());
    }
    setupIsSame(cg, keyExprs);
    setupIsSameApart(cg, keyExprs);
    addRecordValues(cg, valueExprs);
    outputRecordKeys(cg, keyOutputIds, keyExprs);
    outputRecordKeysPrev(cg, keyOutputIds, keyExprs);
    cg.getBlock("resetValues")._return(JExpr.TRUE);
    getIndex(cg);
    container.buildSchema(SelectionVectorMode.NONE);
    StreamingAggregator agg = context.getImplementationClass(cg);
    agg.setup(oContext, incoming, this);
    return agg;
}

Example 2 with IfExpression

use of org.apache.drill.common.expression.IfExpression in project drill by apache.

the class ExpressionTreeMaterializerTest method testMaterializingLateboundTree.

@Test
public void testMaterializingLateboundTree(@Injectable final RecordBatch batch) throws SchemaChangeException {
    new NonStrictExpectations() {

        {
            batch.getValueVectorId(SchemaPath.getSimplePath("test"));
            result = new TypedFieldId(Types.required(MinorType.BIT), -4);
            batch.getValueVectorId(SchemaPath.getSimplePath("test1"));
            result = new TypedFieldId(Types.required(MinorType.BIGINT), -5);
        }
    };
    ErrorCollector ec = new ErrorCollectorImpl();
    LogicalExpression elseExpression = new IfExpression.Builder().setElse(new ValueExpressions.LongExpression(1L, ExpressionPosition.UNKNOWN)).setIfCondition(new IfExpression.IfCondition(new ValueExpressions.BooleanExpression("true", ExpressionPosition.UNKNOWN), new FieldReference("test1", ExpressionPosition.UNKNOWN))).build();
    LogicalExpression expr = new IfExpression.Builder().setIfCondition(new IfExpression.IfCondition(new FieldReference("test", ExpressionPosition.UNKNOWN), new ValueExpressions.LongExpression(2L, ExpressionPosition.UNKNOWN))).setElse(elseExpression).build();
    LogicalExpression newExpr = ExpressionTreeMaterializer.materialize(expr, batch, ec, registry);
    assertTrue(newExpr instanceof IfExpression);
    IfExpression newIfExpr = (IfExpression) newExpr;
    //assertEquals(1, newIfExpr.conditions.size());
    IfExpression.IfCondition ifCondition = newIfExpr.ifCondition;
    assertTrue(newIfExpr.elseExpression instanceof IfExpression);
    //assertEquals(1, newIfExpr.conditions.size());
    //ifCondition = newIfExpr.conditions.get(0);
    assertEquals(bigIntType, ifCondition.expression.getMajorType());
    assertEquals(true, ((ValueExpressions.BooleanExpression) ((IfExpression) (newIfExpr.elseExpression)).ifCondition.condition).value);
    if (ec.hasErrors()) {
        System.out.println(ec.toErrorString());
    }
    assertFalse(ec.hasErrors());
}

Example 3 with IfExpression

use of org.apache.drill.common.expression.IfExpression in project drill by apache.

the class HashAggBatch method createAggregatorInternal.

private HashAggregator createAggregatorInternal() throws SchemaChangeException, ClassTransformationException, IOException {
    CodeGenerator<HashAggregator> top = CodeGenerator.get(HashAggregator.TEMPLATE_DEFINITION, context.getFunctionRegistry(), context.getOptions());
    ClassGenerator<HashAggregator> cg = top.getRoot();
    ClassGenerator<HashAggregator> cgInner = cg.getInnerGenerator("BatchHolder");
    top.plainJavaCapable(true);
    // Uncomment out this line to debug the generated code.
    //    top.saveCodeForDebugging(true);
    container.clear();
    int numGroupByExprs = (popConfig.getGroupByExprs() != null) ? popConfig.getGroupByExprs().size() : 0;
    int numAggrExprs = (popConfig.getAggrExprs() != null) ? popConfig.getAggrExprs().size() : 0;
    aggrExprs = new LogicalExpression[numAggrExprs];
    groupByOutFieldIds = new TypedFieldId[numGroupByExprs];
    aggrOutFieldIds = new TypedFieldId[numAggrExprs];
    ErrorCollector collector = new ErrorCollectorImpl();
    int i;
    for (i = 0; i < numGroupByExprs; i++) {
        NamedExpression ne = popConfig.getGroupByExprs().get(i);
        final LogicalExpression expr = ExpressionTreeMaterializer.materialize(ne.getExpr(), incoming, collector, context.getFunctionRegistry());
        if (expr == null) {
            continue;
        }
        final MaterializedField outputField = MaterializedField.create(ne.getRef().getAsNamePart().getName(), expr.getMajorType());
        @SuppressWarnings("resource") ValueVector vv = TypeHelper.getNewVector(outputField, oContext.getAllocator());
        // add this group-by vector to the output container
        groupByOutFieldIds[i] = container.add(vv);
    }
    for (i = 0; i < numAggrExprs; i++) {
        NamedExpression ne = popConfig.getAggrExprs().get(i);
        final LogicalExpression expr = ExpressionTreeMaterializer.materialize(ne.getExpr(), incoming, collector, context.getFunctionRegistry());
        if (expr instanceof IfExpression) {
            throw UserException.unsupportedError(new UnsupportedOperationException("Union type not supported in aggregate functions")).build(logger);
        }
        if (collector.hasErrors()) {
            throw new SchemaChangeException("Failure while materializing expression. " + collector.toErrorString());
        }
        if (expr == null) {
            continue;
        }
        final MaterializedField outputField = MaterializedField.create(ne.getRef().getAsNamePart().getName(), expr.getMajorType());
        @SuppressWarnings("resource") ValueVector vv = TypeHelper.getNewVector(outputField, oContext.getAllocator());
        aggrOutFieldIds[i] = container.add(vv);
        aggrExprs[i] = new ValueVectorWriteExpression(aggrOutFieldIds[i], expr, true);
    }
    setupUpdateAggrValues(cgInner);
    setupGetIndex(cg);
    cg.getBlock("resetValues")._return(JExpr.TRUE);
    container.buildSchema(SelectionVectorMode.NONE);
    HashAggregator agg = context.getImplementationClass(top);
    HashTableConfig htConfig = // TODO - fix the validator on this option
    new HashTableConfig((int) context.getOptions().getOption(ExecConstants.MIN_HASH_TABLE_SIZE), HashTable.DEFAULT_LOAD_FACTOR, popConfig.getGroupByExprs(), null, /* no probe exprs */
    comparators);
    agg.setup(popConfig, htConfig, context, this.stats, oContext.getAllocator(), incoming, this, aggrExprs, cgInner.getWorkspaceTypes(), groupByOutFieldIds, this.container);
    return agg;
}

Example 4 with IfExpression

use of org.apache.drill.common.expression.IfExpression in project drill by apache.

the class FunctionGenerationHelper method getTypeComparisonFunction.

/**
   * Wraps the comparison function in an If-statement which compares the types first, evaluating the comaprison function only
   * if the types are equivialent
   *
   * @param comparisonFunction
   * @param args
   * @return
   */
private static LogicalExpression getTypeComparisonFunction(LogicalExpression comparisonFunction, HoldingContainer... args) {
    List<LogicalExpression> argExpressions = Lists.newArrayList();
    List<MajorType> argTypes = Lists.newArrayList();
    for (HoldingContainer c : args) {
        argTypes.add(c.getMajorType());
        argExpressions.add(new HoldingContainerExpression(c));
    }
    FunctionCall call = new FunctionCall("compareType", argExpressions, ExpressionPosition.UNKNOWN);
    List<LogicalExpression> newArgs = Lists.newArrayList();
    newArgs.add(call);
    newArgs.add(new IntExpression(0, ExpressionPosition.UNKNOWN));
    FunctionCall notEqual = new FunctionCall("not_equal", newArgs, ExpressionPosition.UNKNOWN);
    IfExpression.IfCondition ifCondition = new IfCondition(notEqual, call);
    IfExpression ifExpression = IfExpression.newBuilder().setIfCondition(ifCondition).setElse(comparisonFunction).build();
    return ifExpression;
}

Example 5 with IfExpression

use of org.apache.drill.common.expression.IfExpression in project drill by apache.

the class CloneVisitor method visitIfExpression.

@Override
public LogicalExpression visitIfExpression(IfExpression ifExpr, Void value) throws RuntimeException {
    LogicalExpression ifCondition = ifExpr.ifCondition.condition.accept(this, null);
    LogicalExpression ifExpression = ifExpr.ifCondition.expression.accept(this, null);
    LogicalExpression elseExpression = ifExpr.elseExpression.accept(this, null);
    IfExpression.IfCondition condition = new IfCondition(ifCondition, ifExpression);
    return IfExpression.newBuilder().setIfCondition(condition).setElse(elseExpression).build();
}