Examples with TableFunctionEvaluator com.sap.hadoop.windowing.functions2.TableFunctionEvaluator used on opensource projects

Example 1 with TableFunctionEvaluator

use of com.sap.hadoop.windowing.functions2.TableFunctionEvaluator in project SQLWindowing by hbutani.

the class WindowSpecTranslation method translateWindow.

/*
	 * compute the Description to use for the Input.
	 * get the inputInfo for the input: if the function has a MapPhase use the Map Inputfo. 
	 * invoke translateWindowSpecOnInput on WdwSpec of TblFunc
	 * If TableFunc is the FunctionRegistry.WINDOWING_TABLE_FUNCTION:
	 * - 
	 */
static WindowDef translateWindow(QueryDef qDef, TableFuncDef tFnDef) throws WindowingException {
    QueryTranslationInfo tInfo = qDef.getTranslationInfo();
    TableFuncSpec tFnSpec = tFnDef.getTableFuncSpec();
    /*
		 * for now the Language only allows explicit specification of Partition & Order clauses.
		 * Easy to allow references to a Global Window Spec.
		 */
    WindowSpec wSpec = new WindowSpec();
    wSpec.setPartition(tFnSpec.getPartition());
    wSpec.setOrder(tFnSpec.getOrder());
    QueryInputDef iDef = tFnDef.getInput();
    if (wSpec.getPartition() == null) {
        return null;
    }
    String desc = getInputDescription(qDef, tFnDef);
    TableFunctionEvaluator tFn = tFnDef.getFunction();
    InputInfo iInfo = null;
    if (tFn.isTransformsRawInput()) {
        iInfo = tInfo.getMapInputInfo(tFnDef);
    } else {
        iInfo = tInfo.getInputInfo(iDef);
    }
    return translateWindowSpecOnInput(qDef, wSpec, iInfo, desc);
}

Example 2 with TableFunctionEvaluator

use of com.sap.hadoop.windowing.functions2.TableFunctionEvaluator in project SQLWindowing by hbutani.

the class QueryDefDeserializer method preVisit.

/*
	 * If the query has a map phase, the inputInfo is retrieved from the map
	 * output info of the table function definition. This is constructed using
	 * the map output oi of the table function definition. If the query does not
	 * have a map phase, the inputInfo is retrieved from the QueryInputDef
	 * (either HiveTableDef or HiveQueryDef) of the query.
	 */
@Override
public void preVisit(TableFuncDef tblFuncDef) throws WindowingException {
    TableFunctionEvaluator tEval = tblFuncDef.getFunction();
    currentTFnResolver = FunctionRegistry.getTableFunctionResolver(tEval.getTableDef().getName());
    currentTFnResolver.initialize(qDef, tblFuncDef, tEval);
    if (tEval.isTransformsRawInput()) {
        currentTFnResolver.setupRawInputOI();
        inputInfo = qDef.getTranslationInfo().getMapInputInfo(tblFuncDef);
    } else {
        inputInfo = qDef.getTranslationInfo().getInputInfo(qInDef);
    }
}

Example 3 with TableFunctionEvaluator

use of com.sap.hadoop.windowing.functions2.TableFunctionEvaluator in project SQLWindowing by hbutani.

the class QueryTranslationInfo method getMapInputInfo.

public InputInfo getMapInputInfo(TableFuncDef tDef) throws WindowingException {
    TableFunctionEvaluator tFn = tDef.getFunction();
    if (!tFn.isTransformsRawInput()) {
        return null;
    }
    mapReshapeInfoMap = mapReshapeInfoMap == null ? new HashMap<String, InputInfo>() : mapReshapeInfoMap;
    InputInfo ii = mapReshapeInfoMap.get(tDef.getAlias());
    if (ii == null) {
        ii = new InputInfo(this, tDef, tFn.getRawInputOI());
        mapReshapeInfoMap.put(tDef.getAlias(), ii);
    }
    return ii;
}

Example 4 with TableFunctionEvaluator

use of com.sap.hadoop.windowing.functions2.TableFunctionEvaluator in project SQLWindowing by hbutani.

the class InputTranslation method translate.

/*
	 * <ol>
	 * <li> Get the <code>TableFunctionResolver</code> for this Function from the FunctionRegistry.
	 * <li> Create the TableFuncDef object.
	 * <li> Get the InputInfo for the input to this function.
	 * <li> Translate the Arguments to this Function in the Context of the InputInfo.
	 * <li> ask the  TableFunctionResolver to create a TableFunctionEvaluator based on the Args passed in.
	 * <li> ask the TableFunctionEvaluator to setup the Map-side ObjectInspector. Gives a chance to functions that 
	 * reshape the Input before it is partitioned to define the Shape after raw data is transformed.
	 * <li> Setup the Window Definition for this Function. The Window Definition is resolved wrt to the InputDef's
	 * Shape or the MapOI, for Functions that reshape the raw input.
	 * <li> ask the TableFunctionEvaluator to setup the Output ObjectInspector for this Function.
	 * <li> setup a Serde for the Output partition based on the OutputOI. 
	 * </ol> 
	 */
private static TableFuncDef translate(QueryDef qDef, TableFuncSpec tSpec, QueryInputDef inputDef) throws WindowingException {
    QueryTranslationInfo tInfo = qDef.getTranslationInfo();
    TableFunctionResolver tFn = FunctionRegistry.getTableFunctionResolver(tSpec.getName());
    if (tFn == null) {
        throw new WindowingException(sprintf("Unknown Table Function %s", tSpec.getName()));
    }
    TableFuncDef tDef = new TableFuncDef();
    tDef.setSpec(tSpec);
    tDef.setInput(inputDef);
    InputInfo iInfo = tInfo.getInputInfo(inputDef);
    /*
		 * translate args
		 */
    ArrayList<ASTNode> args = tSpec.getArgs();
    if (args != null) {
        for (ASTNode expr : args) {
            ArgDef argDef = translateTableFunctionArg(qDef, tDef, iInfo, expr);
            tDef.addArg(argDef);
        }
    }
    tFn.initialize(qDef, tDef);
    TableFunctionEvaluator tEval = tFn.getEvaluator();
    tDef.setFunction(tEval);
    tFn.setupRawInputOI();
    tDef.setWindow(WindowSpecTranslation.translateWindow(qDef, tDef));
    tFn.setupOutputOI();
    TranslateUtils.setupSerdeAndOI(tDef, inputDef, tInfo, tEval);
    return tDef;
}

Example 5 with TableFunctionEvaluator

use of com.sap.hadoop.windowing.functions2.TableFunctionEvaluator in project SQLWindowing by hbutani.

the class MRUtils method initialize.

/**
	 * Construct the data structures containing ExprNodeDesc for partition
	 * columns and order columns. Use the input definition to construct the list
	 * of output columns for the ReduceSinkOperator
	 * 
	 * @throws WindowingException
	 */
public void initialize() throws WindowingException {
    TableFuncDef tabDef = RuntimeUtils.getFirstTableFunction(qdef);
    hiveTableDef = tabDef.getHiveTableDef();
    InputInfo inputInfo;
    ArrayList<ColumnDef> partColList = tabDef.getWindow().getPartDef().getColumns();
    TableFunctionEvaluator tEval = tabDef.getFunction();
    /*
		 * If the query has a map phase, the inputInfo is retrieved from the map
		 * output info of the table function definition. This is constructed
		 * using the map output oi of the table function definition. If the
		 * query does not have a map phase, the inputInfo is retrieved from the
		 * QueryInputDef (either HiveTableDef or HiveQueryDef) of the query.
		 */
    if (tEval.isTransformsRawInput()) {
        inputInfo = qdef.getTranslationInfo().getMapInputInfo(tabDef);
    } else {
        inputInfo = qdef.getTranslationInfo().getInputInfo(hiveTableDef);
    }
    for (ColumnDef colDef : partColList) {
        partCols.add(colDef.getExprNode());
    }
    ArrayList<OrderColumnDef> orderColList = tabDef.getWindow().getOrderDef().getColumns();
    for (OrderColumnDef colDef : orderColList) {
        Order order = colDef.getOrder();
        if (order.name().equals("ASC")) {
            orderString.append('+');
        } else {
            orderString.append('-');
        }
        orderCols.add(colDef.getExprNode());
        outputColumnNames.add(colDef.getAlias());
    }
    RowResolver rr = inputInfo.getRowResolver();
    ArrayList<ColumnInfo> colInfoList = rr.getColumnInfos();
    for (ColumnInfo colInfo : colInfoList) {
        String internalName = colInfo.getInternalName();
        TypeInfo type = colInfo.getType();
        valueCols.add(TranslateUtils.getExprDesc(internalName, type));
        outputColumnNames.add(internalName);
    }
}