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

Example 21 with ErrorCollector

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

the class ProjectRecordBatch method setupNewSchema.

@Override
protected boolean setupNewSchema() throws SchemaChangeException {
    if (allocationVectors != null) {
        for (final ValueVector v : allocationVectors) {
            v.clear();
        }
    }
    this.allocationVectors = Lists.newArrayList();
    if (complexWriters != null) {
        container.clear();
    } else {
        container.zeroVectors();
    }
    final List<NamedExpression> exprs = getExpressionList();
    final ErrorCollector collector = new ErrorCollectorImpl();
    final List<TransferPair> transfers = Lists.newArrayList();
    final ClassGenerator<Projector> cg = CodeGenerator.getRoot(Projector.TEMPLATE_DEFINITION, context.getFunctionRegistry(), context.getOptions());
    cg.getCodeGenerator().plainJavaCapable(true);
    // Uncomment out this line to debug the generated code.
    //    cg.getCodeGenerator().saveCodeForDebugging(true);
    final IntHashSet transferFieldIds = new IntHashSet();
    final boolean isAnyWildcard = isAnyWildcard(exprs);
    final ClassifierResult result = new ClassifierResult();
    final boolean classify = isClassificationNeeded(exprs);
    for (int i = 0; i < exprs.size(); i++) {
        final NamedExpression namedExpression = exprs.get(i);
        result.clear();
        if (classify && namedExpression.getExpr() instanceof SchemaPath) {
            classifyExpr(namedExpression, incoming, result);
            if (result.isStar) {
                // The value indicates which wildcard we are processing now
                final Integer value = result.prefixMap.get(result.prefix);
                if (value != null && value.intValue() == 1) {
                    int k = 0;
                    for (final VectorWrapper<?> wrapper : incoming) {
                        final ValueVector vvIn = wrapper.getValueVector();
                        if (k > result.outputNames.size() - 1) {
                            assert false;
                        }
                        // get the renamed column names
                        final String name = result.outputNames.get(k++);
                        if (name == EMPTY_STRING) {
                            continue;
                        }
                        if (isImplicitFileColumn(vvIn)) {
                            continue;
                        }
                        final FieldReference ref = new FieldReference(name);
                        final ValueVector vvOut = container.addOrGet(MaterializedField.create(ref.getAsNamePart().getName(), vvIn.getField().getType()), callBack);
                        final TransferPair tp = vvIn.makeTransferPair(vvOut);
                        transfers.add(tp);
                    }
                } else if (value != null && value.intValue() > 1) {
                    // subsequent wildcards should do a copy of incoming valuevectors
                    int k = 0;
                    for (final VectorWrapper<?> wrapper : incoming) {
                        final ValueVector vvIn = wrapper.getValueVector();
                        final SchemaPath originalPath = SchemaPath.getSimplePath(vvIn.getField().getPath());
                        if (k > result.outputNames.size() - 1) {
                            assert false;
                        }
                        // get the renamed column names
                        final String name = result.outputNames.get(k++);
                        if (name == EMPTY_STRING) {
                            continue;
                        }
                        if (isImplicitFileColumn(vvIn)) {
                            continue;
                        }
                        final LogicalExpression expr = ExpressionTreeMaterializer.materialize(originalPath, incoming, collector, context.getFunctionRegistry());
                        if (collector.hasErrors()) {
                            throw new SchemaChangeException(String.format("Failure while trying to materialize incoming schema.  Errors:\n %s.", collector.toErrorString()));
                        }
                        final MaterializedField outputField = MaterializedField.create(name, expr.getMajorType());
                        final ValueVector vv = container.addOrGet(outputField, callBack);
                        allocationVectors.add(vv);
                        final TypedFieldId fid = container.getValueVectorId(SchemaPath.getSimplePath(outputField.getPath()));
                        final ValueVectorWriteExpression write = new ValueVectorWriteExpression(fid, expr, true);
                        final HoldingContainer hc = cg.addExpr(write, ClassGenerator.BlkCreateMode.TRUE_IF_BOUND);
                    }
                }
                continue;
            }
        } else {
            // For the columns which do not needed to be classified,
            // it is still necessary to ensure the output column name is unique
            result.outputNames = Lists.newArrayList();
            final String outputName = getRef(namedExpression).getRootSegment().getPath();
            addToResultMaps(outputName, result, true);
        }
        String outputName = getRef(namedExpression).getRootSegment().getPath();
        if (result != null && result.outputNames != null && result.outputNames.size() > 0) {
            boolean isMatched = false;
            for (int j = 0; j < result.outputNames.size(); j++) {
                if (!result.outputNames.get(j).equals(EMPTY_STRING)) {
                    outputName = result.outputNames.get(j);
                    isMatched = true;
                    break;
                }
            }
            if (!isMatched) {
                continue;
            }
        }
        final LogicalExpression expr = ExpressionTreeMaterializer.materialize(namedExpression.getExpr(), incoming, collector, context.getFunctionRegistry(), true, unionTypeEnabled);
        final MaterializedField outputField = MaterializedField.create(outputName, expr.getMajorType());
        if (collector.hasErrors()) {
            throw new SchemaChangeException(String.format("Failure while trying to materialize incoming schema.  Errors:\n %s.", collector.toErrorString()));
        }
        // add value vector to transfer if direct reference and this is allowed, otherwise, add to evaluation stack.
        if (expr instanceof ValueVectorReadExpression && incoming.getSchema().getSelectionVectorMode() == SelectionVectorMode.NONE && !((ValueVectorReadExpression) expr).hasReadPath() && !isAnyWildcard && !transferFieldIds.contains(((ValueVectorReadExpression) expr).getFieldId().getFieldIds()[0])) {
            final ValueVectorReadExpression vectorRead = (ValueVectorReadExpression) expr;
            final TypedFieldId id = vectorRead.getFieldId();
            final ValueVector vvIn = incoming.getValueAccessorById(id.getIntermediateClass(), id.getFieldIds()).getValueVector();
            Preconditions.checkNotNull(incoming);
            final FieldReference ref = getRef(namedExpression);
            final ValueVector vvOut = container.addOrGet(MaterializedField.create(ref.getAsUnescapedPath(), vectorRead.getMajorType()), callBack);
            final TransferPair tp = vvIn.makeTransferPair(vvOut);
            transfers.add(tp);
            transferFieldIds.add(vectorRead.getFieldId().getFieldIds()[0]);
        } else if (expr instanceof DrillFuncHolderExpr && ((DrillFuncHolderExpr) expr).getHolder().isComplexWriterFuncHolder()) {
            // Lazy initialization of the list of complex writers, if not done yet.
            if (complexWriters == null) {
                complexWriters = Lists.newArrayList();
            } else {
                complexWriters.clear();
            }
            // The reference name will be passed to ComplexWriter, used as the name of the output vector from the writer.
            ((DrillFuncHolderExpr) expr).getFieldReference(namedExpression.getRef());
            cg.addExpr(expr, ClassGenerator.BlkCreateMode.TRUE_IF_BOUND);
            if (complexFieldReferencesList == null) {
                complexFieldReferencesList = Lists.newArrayList();
            }
            // save the field reference for later for getting schema when input is empty
            complexFieldReferencesList.add(namedExpression.getRef());
        } else {
            // need to do evaluation.
            final ValueVector vector = container.addOrGet(outputField, callBack);
            allocationVectors.add(vector);
            final TypedFieldId fid = container.getValueVectorId(SchemaPath.getSimplePath(outputField.getPath()));
            final boolean useSetSafe = !(vector instanceof FixedWidthVector);
            final ValueVectorWriteExpression write = new ValueVectorWriteExpression(fid, expr, useSetSafe);
            final HoldingContainer hc = cg.addExpr(write, ClassGenerator.BlkCreateMode.TRUE_IF_BOUND);
            // We cannot do multiple transfers from the same vector. However we still need to instantiate the output vector.
            if (expr instanceof ValueVectorReadExpression) {
                final ValueVectorReadExpression vectorRead = (ValueVectorReadExpression) expr;
                if (!vectorRead.hasReadPath()) {
                    final TypedFieldId id = vectorRead.getFieldId();
                    final ValueVector vvIn = incoming.getValueAccessorById(id.getIntermediateClass(), id.getFieldIds()).getValueVector();
                    vvIn.makeTransferPair(vector);
                }
            }
            logger.debug("Added eval for project expression.");
        }
    }
    try {
        CodeGenerator<Projector> codeGen = cg.getCodeGenerator();
        codeGen.plainJavaCapable(true);
        // Uncomment out this line to debug the generated code.
        //      codeGen.saveCodeForDebugging(true);
        this.projector = context.getImplementationClass(codeGen);
        projector.setup(context, incoming, this, transfers);
    } catch (ClassTransformationException | IOException e) {
        throw new SchemaChangeException("Failure while attempting to load generated class", e);
    }
    if (container.isSchemaChanged()) {
        container.buildSchema(SelectionVectorMode.NONE);
        return true;
    } else {
        return false;
    }
}

Example 22 with ErrorCollector

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

the class PartitionSenderRootExec method createClassInstances.

private List<Partitioner> createClassInstances(int actualPartitions) throws SchemaChangeException {
    // set up partitioning function
    final LogicalExpression expr = operator.getExpr();
    final ErrorCollector collector = new ErrorCollectorImpl();
    final ClassGenerator<Partitioner> cg;
    cg = CodeGenerator.getRoot(Partitioner.TEMPLATE_DEFINITION, context.getFunctionRegistry(), context.getOptions());
    cg.getCodeGenerator().plainJavaCapable(true);
    // Uncomment out this line to debug the generated code.
    //    cg.getCodeGenerator().saveCodeForDebugging(true);
    ClassGenerator<Partitioner> cgInner = cg.getInnerGenerator("OutgoingRecordBatch");
    final LogicalExpression materializedExpr = ExpressionTreeMaterializer.materialize(expr, incoming, collector, context.getFunctionRegistry());
    if (collector.hasErrors()) {
        throw new SchemaChangeException(String.format("Failure while trying to materialize incoming schema.  Errors:\n %s.", collector.toErrorString()));
    }
    // generate code to copy from an incoming value vector to the destination partition's outgoing value vector
    JExpression bucket = JExpr.direct("bucket");
    // generate evaluate expression to determine the hash
    ClassGenerator.HoldingContainer exprHolder = cg.addExpr(materializedExpr);
    cg.getEvalBlock().decl(JType.parse(cg.getModel(), "int"), "bucket", exprHolder.getValue().mod(JExpr.lit(outGoingBatchCount)));
    cg.getEvalBlock()._return(cg.getModel().ref(Math.class).staticInvoke("abs").arg(bucket));
    CopyUtil.generateCopies(cgInner, incoming, incoming.getSchema().getSelectionVectorMode() == SelectionVectorMode.FOUR_BYTE);
    try {
        // compile and setup generated code
        List<Partitioner> subPartitioners = context.getImplementationClass(cg, actualPartitions);
        return subPartitioners;
    } catch (ClassTransformationException | IOException e) {
        throw new SchemaChangeException("Failure while attempting to load generated class", e);
    }
}

Example 23 with ErrorCollector

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

the class OrderedPartitionRecordBatch method getCopier.

/**
   * Creates a copier that does a project for every Nth record from a VectorContainer incoming into VectorContainer
   * outgoing. Each Ordering in orderings generates a column, and evaluation of the expression associated with each
   * Ordering determines the value of each column. These records will later be sorted based on the values in each
   * column, in the same order as the orderings.
   *
   * @param sv4
   * @param incoming
   * @param outgoing
   * @param orderings
   * @return
   * @throws SchemaChangeException
   */
private SampleCopier getCopier(SelectionVector4 sv4, VectorContainer incoming, VectorContainer outgoing, List<Ordering> orderings, List<ValueVector> localAllocationVectors) throws SchemaChangeException {
    final ErrorCollector collector = new ErrorCollectorImpl();
    final ClassGenerator<SampleCopier> cg = CodeGenerator.getRoot(SampleCopier.TEMPLATE_DEFINITION, context.getFunctionRegistry(), context.getOptions());
    // Note: disabled for now. This may require some debugging:
    // no tests are available for this operator.
    //    cg.getCodeGenerator().plainOldJavaCapable(true);
    // Uncomment out this line to debug the generated code.
    //    cg.getCodeGenerator().saveCodeForDebugging(true);
    int i = 0;
    for (Ordering od : orderings) {
        final LogicalExpression expr = ExpressionTreeMaterializer.materialize(od.getExpr(), incoming, collector, context.getFunctionRegistry());
        SchemaPath schemaPath = SchemaPath.getSimplePath("f" + i++);
        TypeProtos.MajorType.Builder builder = TypeProtos.MajorType.newBuilder().mergeFrom(expr.getMajorType()).clearMode().setMode(TypeProtos.DataMode.REQUIRED);
        TypeProtos.MajorType newType = builder.build();
        MaterializedField outputField = MaterializedField.create(schemaPath.getAsUnescapedPath(), newType);
        if (collector.hasErrors()) {
            throw new SchemaChangeException(String.format("Failure while trying to materialize incoming schema.  Errors:\n %s.", collector.toErrorString()));
        }
        @SuppressWarnings("resource") ValueVector vector = TypeHelper.getNewVector(outputField, oContext.getAllocator());
        localAllocationVectors.add(vector);
        TypedFieldId fid = outgoing.add(vector);
        ValueVectorWriteExpression write = new ValueVectorWriteExpression(fid, expr, true);
        HoldingContainer hc = cg.addExpr(write);
        cg.getEvalBlock()._if(hc.getValue().eq(JExpr.lit(0)))._then()._return(JExpr.FALSE);
    }
    cg.rotateBlock();
    cg.getEvalBlock()._return(JExpr.TRUE);
    outgoing.buildSchema(BatchSchema.SelectionVectorMode.NONE);
    try {
        SampleCopier sampleCopier = context.getImplementationClass(cg);
        sampleCopier.setupCopier(context, sv4, incoming, outgoing);
        return sampleCopier;
    } catch (ClassTransformationException | IOException e) {
        throw new SchemaChangeException(e);
    }
}

Example 24 with ErrorCollector

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

the class NestedLoopJoinBatch method setupWorker.

/**
   * Method generates the runtime code needed for NLJ. Other than the setup method to set the input and output value
   * vector references we implement three more methods
   * 1. doEval() -> Evaluates if record from left side matches record from the right side
   * 2. emitLeft() -> Project record from the left side
   * 3. emitRight() -> Project record from the right side (which is a hyper container)
   * @return the runtime generated class that implements the NestedLoopJoin interface
   */
private NestedLoopJoin setupWorker() throws IOException, ClassTransformationException, SchemaChangeException {
    final CodeGenerator<NestedLoopJoin> nLJCodeGenerator = CodeGenerator.get(NestedLoopJoin.TEMPLATE_DEFINITION, context.getFunctionRegistry(), context.getOptions());
    nLJCodeGenerator.plainJavaCapable(true);
    // Uncomment out this line to debug the generated code.
    //    nLJCodeGenerator.saveCodeForDebugging(true);
    final ClassGenerator<NestedLoopJoin> nLJClassGenerator = nLJCodeGenerator.getRoot();
    // generate doEval
    final ErrorCollector collector = new ErrorCollectorImpl();
    /*
        Logical expression may contain fields from left and right batches. During code generation (materialization)
        we need to indicate from which input field should be taken.

        Non-equality joins can belong to one of below categories. For example:
        1. Join on non-equality join predicates:
        select * from t1 inner join t2 on (t1.c1 between t2.c1 AND t2.c2) AND (...)
        2. Join with an OR predicate:
        select * from t1 inner join t2 on on t1.c1 = t2.c1 OR t1.c2 = t2.c2
     */
    Map<VectorAccessible, BatchReference> batches = ImmutableMap.<VectorAccessible, BatchReference>builder().put(left, new BatchReference("leftBatch", "leftIndex")).put(rightContainer, new BatchReference("rightContainer", "rightBatchIndex", "rightRecordIndexWithinBatch")).build();
    LogicalExpression materialize = ExpressionTreeMaterializer.materialize(popConfig.getCondition(), batches, collector, context.getFunctionRegistry(), false, false);
    if (collector.hasErrors()) {
        throw new SchemaChangeException(String.format("Failure while trying to materialize join condition. Errors:\n %s.", collector.toErrorString()));
    }
    nLJClassGenerator.addExpr(new ReturnValueExpression(materialize), ClassGenerator.BlkCreateMode.FALSE);
    // generate emitLeft
    nLJClassGenerator.setMappingSet(emitLeftMapping);
    JExpression outIndex = JExpr.direct("outIndex");
    JExpression leftIndex = JExpr.direct("leftIndex");
    int fieldId = 0;
    int outputFieldId = 0;
    // Set the input and output value vector references corresponding to the left batch
    for (MaterializedField field : leftSchema) {
        final TypeProtos.MajorType fieldType = field.getType();
        // Add the vector to the output container
        container.addOrGet(field);
        JVar inVV = nLJClassGenerator.declareVectorValueSetupAndMember("leftBatch", new TypedFieldId(fieldType, false, fieldId));
        JVar outVV = nLJClassGenerator.declareVectorValueSetupAndMember("outgoing", new TypedFieldId(fieldType, false, outputFieldId));
        nLJClassGenerator.getEvalBlock().add(outVV.invoke("copyFromSafe").arg(leftIndex).arg(outIndex).arg(inVV));
        nLJClassGenerator.rotateBlock();
        fieldId++;
        outputFieldId++;
    }
    // generate emitRight
    fieldId = 0;
    nLJClassGenerator.setMappingSet(emitRightMapping);
    JExpression batchIndex = JExpr.direct("batchIndex");
    JExpression recordIndexWithinBatch = JExpr.direct("recordIndexWithinBatch");
    // Set the input and output value vector references corresponding to the right batch
    for (MaterializedField field : rightSchema) {
        final TypeProtos.MajorType inputType = field.getType();
        TypeProtos.MajorType outputType;
        // if join type is LEFT, make sure right batch output fields data mode is optional
        if (popConfig.getJoinType() == JoinRelType.LEFT && inputType.getMode() == TypeProtos.DataMode.REQUIRED) {
            outputType = Types.overrideMode(inputType, TypeProtos.DataMode.OPTIONAL);
        } else {
            outputType = inputType;
        }
        MaterializedField newField = MaterializedField.create(field.getPath(), outputType);
        container.addOrGet(newField);
        JVar inVV = nLJClassGenerator.declareVectorValueSetupAndMember("rightContainer", new TypedFieldId(inputType, true, fieldId));
        JVar outVV = nLJClassGenerator.declareVectorValueSetupAndMember("outgoing", new TypedFieldId(outputType, false, outputFieldId));
        nLJClassGenerator.getEvalBlock().add(outVV.invoke("copyFromSafe").arg(recordIndexWithinBatch).arg(outIndex).arg(inVV.component(batchIndex)));
        nLJClassGenerator.rotateBlock();
        fieldId++;
        outputFieldId++;
    }
    return context.getImplementationClass(nLJCodeGenerator);
}

Example 25 with ErrorCollector

use of org.apache.drill.common.expression.ErrorCollector 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;
}