Examples with AggregateFunctionCallExpression org.apache.hyracks.algebricks.core.algebra.expressions.AggregateFunctionCallExpression used on opensource projects

Example 16 with AggregateFunctionCallExpression

use of org.apache.hyracks.algebricks.core.algebra.expressions.AggregateFunctionCallExpression in project asterixdb by apache.

the class MergeAggregationExpressionFactory method createMergeAggregation.

@Override
public ILogicalExpression createMergeAggregation(LogicalVariable originalProducedVar, ILogicalExpression expr, IOptimizationContext env) throws AlgebricksException {
    AggregateFunctionCallExpression agg = (AggregateFunctionCallExpression) expr;
    FunctionIdentifier fid = agg.getFunctionIdentifier();
    VariableReferenceExpression tempVarExpr = new VariableReferenceExpression(originalProducedVar);
    List<Mutable<ILogicalExpression>> arguments = new ArrayList<Mutable<ILogicalExpression>>();
    Mutable<ILogicalExpression> mutableExpression = new MutableObject<ILogicalExpression>(tempVarExpr);
    arguments.add(mutableExpression);
    /**
         * For global aggregate, the merge function is ALWAYS the same as the original aggregate function.
         */
    FunctionIdentifier mergeFid = BuiltinFunctions.isGlobalAggregateFunction(fid) ? fid : BuiltinFunctions.getIntermediateAggregateFunction(fid);
    if (mergeFid == null) {
        /**
             * In this case, no merge function (unimplemented) for the local-side aggregate function
             */
        return null;
    }
    return BuiltinFunctions.makeAggregateFunctionExpression(mergeFid, arguments);
}

Example 17 with AggregateFunctionCallExpression

use of org.apache.hyracks.algebricks.core.algebra.expressions.AggregateFunctionCallExpression in project asterixdb by apache.

the class PartialAggregationTypeComputer method getType.

@Override
public Object getType(ILogicalExpression expr, IVariableTypeEnvironment env, IMetadataProvider<?, ?> metadataProvider) throws AlgebricksException {
    AggregateFunctionCallExpression agg = (AggregateFunctionCallExpression) expr;
    FunctionIdentifier partialFid = agg.getFunctionIdentifier();
    if (partialFid.equals(BuiltinFunctions.SERIAL_GLOBAL_AVG)) {
        partialFid = BuiltinFunctions.SERIAL_LOCAL_AVG;
    }
    AggregateFunctionCallExpression partialAgg = BuiltinFunctions.makeAggregateFunctionExpression(partialFid, agg.getArguments());
    return getTypeForFunction(partialAgg, env, metadataProvider);
}

Example 18 with AggregateFunctionCallExpression

use of org.apache.hyracks.algebricks.core.algebra.expressions.AggregateFunctionCallExpression in project asterixdb by apache.

the class SortGroupByPOperator method contributeRuntimeOperator.

@Override
public void contributeRuntimeOperator(IHyracksJobBuilder builder, JobGenContext context, ILogicalOperator op, IOperatorSchema opSchema, IOperatorSchema[] inputSchemas, IOperatorSchema outerPlanSchema) throws AlgebricksException {
    List<LogicalVariable> gbyCols = getGbyColumns();
    int[] keys = JobGenHelper.variablesToFieldIndexes(gbyCols, inputSchemas[0]);
    GroupByOperator gby = (GroupByOperator) op;
    int numFds = gby.getDecorList().size();
    int[] fdColumns = new int[numFds];
    int j = 0;
    for (Pair<LogicalVariable, Mutable<ILogicalExpression>> p : gby.getDecorList()) {
        ILogicalExpression expr = p.second.getValue();
        if (expr.getExpressionTag() != LogicalExpressionTag.VARIABLE) {
            throw new AlgebricksException("Sort group-by expects variable references.");
        }
        VariableReferenceExpression v = (VariableReferenceExpression) expr;
        LogicalVariable decor = v.getVariableReference();
        fdColumns[j++] = inputSchemas[0].findVariable(decor);
    }
    if (gby.getNestedPlans().size() != 1) {
        throw new AlgebricksException("Sort group-by currently works only for one nested plan with one root containing" + "an aggregate and a nested-tuple-source.");
    }
    ILogicalPlan p0 = gby.getNestedPlans().get(0);
    if (p0.getRoots().size() != 1) {
        throw new AlgebricksException("Sort group-by currently works only for one nested plan with one root containing" + "an aggregate and a nested-tuple-source.");
    }
    Mutable<ILogicalOperator> r0 = p0.getRoots().get(0);
    AggregateOperator aggOp = (AggregateOperator) r0.getValue();
    IPartialAggregationTypeComputer partialAggregationTypeComputer = context.getPartialAggregationTypeComputer();
    List<Object> intermediateTypes = new ArrayList<Object>();
    int n = aggOp.getExpressions().size();
    IAggregateEvaluatorFactory[] aff = new IAggregateEvaluatorFactory[n];
    int i = 0;
    IExpressionRuntimeProvider expressionRuntimeProvider = context.getExpressionRuntimeProvider();
    IVariableTypeEnvironment aggOpInputEnv = context.getTypeEnvironment(aggOp.getInputs().get(0).getValue());
    IVariableTypeEnvironment outputEnv = context.getTypeEnvironment(op);
    for (Mutable<ILogicalExpression> exprRef : aggOp.getExpressions()) {
        AggregateFunctionCallExpression aggFun = (AggregateFunctionCallExpression) exprRef.getValue();
        aff[i++] = expressionRuntimeProvider.createAggregateFunctionFactory(aggFun, aggOpInputEnv, inputSchemas, context);
        intermediateTypes.add(partialAggregationTypeComputer.getType(aggFun, aggOpInputEnv, context.getMetadataProvider()));
    }
    int[] keyAndDecFields = new int[keys.length + fdColumns.length];
    for (i = 0; i < keys.length; ++i) {
        keyAndDecFields[i] = keys[i];
    }
    for (i = 0; i < fdColumns.length; i++) {
        keyAndDecFields[keys.length + i] = fdColumns[i];
    }
    List<LogicalVariable> keyAndDecVariables = new ArrayList<LogicalVariable>();
    for (Pair<LogicalVariable, Mutable<ILogicalExpression>> p : gby.getGroupByList()) {
        keyAndDecVariables.add(p.first);
    }
    for (Pair<LogicalVariable, Mutable<ILogicalExpression>> p : gby.getDecorList()) {
        keyAndDecVariables.add(GroupByOperator.getDecorVariable(p));
    }
    for (LogicalVariable var : keyAndDecVariables) {
        aggOpInputEnv.setVarType(var, outputEnv.getVarType(var));
    }
    compileSubplans(inputSchemas[0], gby, opSchema, context);
    IOperatorDescriptorRegistry spec = builder.getJobSpec();
    IBinaryComparatorFactory[] compFactories = new IBinaryComparatorFactory[gbyCols.size()];
    IBinaryComparatorFactoryProvider bcfProvider = context.getBinaryComparatorFactoryProvider();
    i = 0;
    for (LogicalVariable v : gbyCols) {
        Object type = aggOpInputEnv.getVarType(v);
        if (orderColumns[i].getOrder() == OrderKind.ASC) {
            compFactories[i] = bcfProvider.getBinaryComparatorFactory(type, true);
        } else {
            compFactories[i] = bcfProvider.getBinaryComparatorFactory(type, false);
        }
        i++;
    }
    RecordDescriptor recordDescriptor = JobGenHelper.mkRecordDescriptor(context.getTypeEnvironment(op), opSchema, context);
    IAggregateEvaluatorFactory[] merges = new IAggregateEvaluatorFactory[n];
    List<LogicalVariable> usedVars = new ArrayList<LogicalVariable>();
    IOperatorSchema[] localInputSchemas = new IOperatorSchema[1];
    localInputSchemas[0] = new OperatorSchemaImpl();
    for (i = 0; i < n; i++) {
        AggregateFunctionCallExpression aggFun = (AggregateFunctionCallExpression) aggOp.getMergeExpressions().get(i).getValue();
        aggFun.getUsedVariables(usedVars);
    }
    i = 0;
    for (Object type : intermediateTypes) {
        aggOpInputEnv.setVarType(usedVars.get(i++), type);
    }
    for (LogicalVariable keyVar : keyAndDecVariables) {
        localInputSchemas[0].addVariable(keyVar);
    }
    for (LogicalVariable usedVar : usedVars) {
        localInputSchemas[0].addVariable(usedVar);
    }
    for (i = 0; i < n; i++) {
        AggregateFunctionCallExpression mergeFun = (AggregateFunctionCallExpression) aggOp.getMergeExpressions().get(i).getValue();
        merges[i] = expressionRuntimeProvider.createAggregateFunctionFactory(mergeFun, aggOpInputEnv, localInputSchemas, context);
    }
    RecordDescriptor partialAggRecordDescriptor = JobGenHelper.mkRecordDescriptor(context.getTypeEnvironment(op), localInputSchemas[0], context);
    IAggregatorDescriptorFactory aggregatorFactory = new SimpleAlgebricksAccumulatingAggregatorFactory(aff, keyAndDecFields);
    IAggregatorDescriptorFactory mergeFactory = new SimpleAlgebricksAccumulatingAggregatorFactory(merges, keyAndDecFields);
    INormalizedKeyComputerFactory normalizedKeyFactory = null;
    INormalizedKeyComputerFactoryProvider nkcfProvider = context.getNormalizedKeyComputerFactoryProvider();
    if (nkcfProvider == null) {
        normalizedKeyFactory = null;
    }
    Object type = aggOpInputEnv.getVarType(gbyCols.get(0));
    normalizedKeyFactory = orderColumns[0].getOrder() == OrderKind.ASC ? nkcfProvider.getNormalizedKeyComputerFactory(type, true) : nkcfProvider.getNormalizedKeyComputerFactory(type, false);
    SortGroupByOperatorDescriptor gbyOpDesc = new SortGroupByOperatorDescriptor(spec, frameLimit, keys, keyAndDecFields, normalizedKeyFactory, compFactories, aggregatorFactory, mergeFactory, partialAggRecordDescriptor, recordDescriptor, false);
    contributeOpDesc(builder, gby, gbyOpDesc);
    ILogicalOperator src = op.getInputs().get(0).getValue();
    builder.contributeGraphEdge(src, 0, op, 0);
}

Example 19 with AggregateFunctionCallExpression

use of org.apache.hyracks.algebricks.core.algebra.expressions.AggregateFunctionCallExpression in project asterixdb by apache.

the class BuiltinFunctions method makeSerializableAggregateFunctionExpression.

public static AggregateFunctionCallExpression makeSerializableAggregateFunctionExpression(FunctionIdentifier fi, List<Mutable<ILogicalExpression>> args) {
    IFunctionInfo finfo = getAsterixFunctionInfo(fi);
    IFunctionInfo serializableFinfo = aggregateToSerializableAggregate.get(finfo);
    if (serializableFinfo == null) {
        throw new IllegalStateException("no serializable implementation for aggregate function " + serializableFinfo);
    }
    IFunctionInfo fiLocal = aggregateToLocalAggregate.get(serializableFinfo);
    IFunctionInfo fiGlobal = aggregateToGlobalAggregate.get(serializableFinfo);
    if (fiLocal != null && fiGlobal != null) {
        AggregateFunctionCallExpression fun = new AggregateFunctionCallExpression(serializableFinfo, true, args);
        fun.setStepTwoAggregate(fiGlobal);
        fun.setStepOneAggregate(fiLocal);
        return fun;
    } else {
        return new AggregateFunctionCallExpression(serializableFinfo, false, args);
    }
}

Example 20 with AggregateFunctionCallExpression

use of org.apache.hyracks.algebricks.core.algebra.expressions.AggregateFunctionCallExpression in project asterixdb by apache.

the class BuiltinFunctions method makeAggregateFunctionExpression.

public static AggregateFunctionCallExpression makeAggregateFunctionExpression(FunctionIdentifier fi, List<Mutable<ILogicalExpression>> args) {
    IFunctionInfo finfo = getAsterixFunctionInfo(fi);
    IFunctionInfo fiLocal = aggregateToLocalAggregate.get(finfo);
    IFunctionInfo fiGlobal = aggregateToGlobalAggregate.get(finfo);
    if (fiLocal != null && fiGlobal != null) {
        AggregateFunctionCallExpression fun = new AggregateFunctionCallExpression(finfo, true, args);
        fun.setStepTwoAggregate(fiGlobal);
        fun.setStepOneAggregate(fiLocal);
        return fun;
    } else {
        return new AggregateFunctionCallExpression(finfo, false, args);
    }
}