Examples with WindowFunctionDef com.sap.hadoop.windowing.query2.definition.WindowFunctionDef used on opensource projects

Example 6 with WindowFunctionDef

use of com.sap.hadoop.windowing.query2.definition.WindowFunctionDef in project SQLWindowing by hbutani.

the class WindowingTableFunction method execute.

@SuppressWarnings({ "unchecked", "rawtypes" })
@Override
public void execute(PartitionIterator<Object> pItr, Partition outP) throws WindowingException {
    ArrayList<List<?>> oColumns = new ArrayList<List<?>>();
    Partition iPart = pItr.getPartition();
    StructObjectInspector inputOI;
    try {
        inputOI = (StructObjectInspector) iPart.getSerDe().getObjectInspector();
    } catch (SerDeException se) {
        throw new WindowingException(se);
    }
    try {
        for (WindowFunctionDef wFn : wFnDefs) {
            boolean processWindow = wFn.getWindow() != null;
            pItr.reset();
            if (!processWindow) {
                GenericUDAFEvaluator fEval = wFn.getEvaluator();
                Object[] args = new Object[wFn.getArgs().size()];
                AggregationBuffer aggBuffer = fEval.getNewAggregationBuffer();
                while (pItr.hasNext()) {
                    Object row = pItr.next();
                    int i = 0;
                    for (ArgDef arg : wFn.getArgs()) {
                        args[i++] = arg.getExprEvaluator().evaluate(row);
                    }
                    fEval.aggregate(aggBuffer, args);
                }
                Object out = fEval.evaluate(aggBuffer);
                WindowFunctionInfo wFnInfo = FunctionRegistry.getWindowFunctionInfo(wFn.getSpec().getName());
                if (!wFnInfo.isPivotResult()) {
                    out = new SameList(iPart.size(), out);
                }
                oColumns.add((List<?>) out);
            } else {
                oColumns.add(executeFnwithWindow(getQueryDef(), wFn, iPart));
            }
        }
        for (int i = 0; i < iPart.size(); i++) {
            ArrayList oRow = new ArrayList();
            Object iRow = iPart.getAt(i);
            for (StructField f : inputOI.getAllStructFieldRefs()) {
                oRow.add(inputOI.getStructFieldData(iRow, f));
            }
            for (int j = 0; j < oColumns.size(); j++) {
                oRow.add(oColumns.get(j).get(i));
            }
            outP.append(oRow);
        }
    } catch (HiveException he) {
        throw new WindowingException(he);
    }
}

Example 7 with WindowFunctionDef

use of com.sap.hadoop.windowing.query2.definition.WindowFunctionDef in project SQLWindowing by hbutani.

the class WindowFunctionTranslation method translate.

public static WindowFunctionDef translate(QueryDef qDef, TableFuncDef windowTableFnDef, WindowFunctionSpec wFnSpec) throws WindowingException {
    QueryTranslationInfo tInfo = qDef.getTranslationInfo();
    InputInfo iInfo = tInfo.getInputInfo(windowTableFnDef.getInput());
    WindowFunctionDef wFnDef = new WindowFunctionDef();
    wFnDef.setSpec(wFnSpec);
    /*
		 * translate args
		 */
    ArrayList<ASTNode> args = wFnSpec.getArgs();
    if (args != null) {
        for (ASTNode expr : args) {
            ArgDef argDef = translateWindowFunctionArg(qDef, windowTableFnDef, iInfo, expr);
            wFnDef.addArg(argDef);
        }
    }
    if (RANKING_FUNCS.contains(wFnSpec.getName())) {
        setupRankingArgs(qDef, windowTableFnDef, wFnDef, wFnSpec);
    }
    WindowDef wDef = translateWindowSpec(qDef, iInfo, wFnSpec);
    wFnDef.setWindow(wDef);
    validateWindowDefForWFn(windowTableFnDef, wFnDef);
    setupEvaluator(wFnDef);
    return wFnDef;
}