Examples with TableFunctionResolver org.apache.hadoop.hive.ql.udf.ptf.TableFunctionResolver used on opensource projects

Example 1 with TableFunctionResolver

use of org.apache.hadoop.hive.ql.udf.ptf.TableFunctionResolver in project hive by apache.

the class PTFDeserializer method initialize.

protected void initialize(PartitionedTableFunctionDef def) throws HiveException {
    ShapeDetails inpShape = def.getInput().getOutputShape();
    /*
     * 1. initialize args
     */
    if (def.getArgs() != null) {
        for (PTFExpressionDef arg : def.getArgs()) {
            initialize(arg, inpShape);
        }
    }
    /*
     * 2. setup resolve, make connections
     */
    TableFunctionEvaluator tEval = def.getTFunction();
    // TableFunctionResolver tResolver = FunctionRegistry.getTableFunctionResolver(def.getName());
    TableFunctionResolver tResolver = constructResolver(def.getResolverClassName());
    tResolver.initialize(hConf, ptfDesc, def, tEval);
    /*
     * 3. give Evaluator chance to setup for RawInput execution; setup RawInput shape
     */
    if (tEval.isTransformsRawInput()) {
        tResolver.initializeRawInputOI();
        initialize(def.getRawInputShape(), tEval.getRawInputOI());
    } else {
        def.setRawInputShape(inpShape);
    }
    inpShape = def.getRawInputShape();
    /*
     * 4. give Evaluator chance to setup for Output execution; setup Output shape.
     */
    tResolver.initializeOutputOI();
    initialize(def.getOutputShape(), tEval.getOutputOI());
}

Example 2 with TableFunctionResolver

use of org.apache.hadoop.hive.ql.udf.ptf.TableFunctionResolver in project hive by apache.

the class PTFTranslator method translate.

private PartitionedTableFunctionDef translate(PartitionedTableFunctionSpec spec, PTFInputDef inpDef, int inpNum) throws SemanticException {
    TableFunctionResolver tFn = FunctionRegistry.getTableFunctionResolver(spec.getName());
    if (tFn == null) {
        throw new SemanticException(String.format("Unknown Table Function %s", spec.getName()));
    }
    PartitionedTableFunctionDef def = new PartitionedTableFunctionDef();
    def.setInput(inpDef);
    def.setName(spec.getName());
    def.setResolverClassName(tFn.getClass().getName());
    def.setAlias(spec.getAlias() == null ? "ptf_" + inpNum : spec.getAlias());
    def.setExpressionTreeString(spec.getAstNode().toStringTree());
    def.setTransformsRawInput(tFn.transformsRawInput());
    /*
     * translate args
     */
    List<ASTNode> args = spec.getArgs();
    if (args != null) {
        for (ASTNode expr : args) {
            PTFExpressionDef argDef = null;
            try {
                argDef = buildExpressionDef(inpDef.getOutputShape(), expr);
            } catch (HiveException he) {
                throw new SemanticException(he);
            }
            def.addArg(argDef);
        }
    }
    tFn.initialize(hCfg, ptfDesc, def);
    TableFunctionEvaluator tEval = tFn.getEvaluator();
    def.setTFunction(tEval);
    def.setCarryForwardNames(tFn.carryForwardNames());
    tFn.setupRawInputOI();
    if (tFn.transformsRawInput()) {
        StructObjectInspector rawInOutOI = tEval.getRawInputOI();
        List<String> rawInOutColNames = tFn.getRawInputColumnNames();
        RowResolver rawInRR = buildRowResolverForPTF(def.getName(), spec.getAlias(), rawInOutOI, rawInOutColNames, inpDef.getOutputShape().getRr());
        ShapeDetails rawInpShape = setupTableFnShape(def.getName(), inpDef.getOutputShape(), rawInOutOI, rawInOutColNames, rawInRR);
        def.setRawInputShape(rawInpShape);
    } else {
        def.setRawInputShape(inpDef.getOutputShape());
    }
    translatePartitioning(def, spec);
    tFn.setupOutputOI();
    StructObjectInspector outputOI = tEval.getOutputOI();
    List<String> outColNames = tFn.getOutputColumnNames();
    RowResolver outRR = buildRowResolverForPTF(def.getName(), spec.getAlias(), outputOI, outColNames, def.getRawInputShape().getRr());
    ShapeDetails outputShape = setupTableFnShape(def.getName(), inpDef.getOutputShape(), outputOI, outColNames, outRR);
    def.setOutputShape(outputShape);
    def.setReferencedColumns(tFn.getReferencedColumns());
    return def;
}