Examples of WindowFunctionInfo

Examples of org.apache.hadoop.hive.ql.exec.WindowFunctionInfo

    return def;
  }


  private WindowFunctionDef translate(WindowTableFunctionDef wdwTFnDef,
      WindowFunctionSpec spec) throws SemanticException {
    WindowFunctionInfo wFnInfo = FunctionRegistry.getWindowFunctionInfo(spec.getName());
    WindowFunctionDef def = new WindowFunctionDef();
    def.setName(spec.getName());
    def.setAlias(spec.getAlias());
    def.setDistinct(spec.isDistinct());
    def.setExpressionTreeString(spec.getExpression().toStringTree());
    def.setStar(spec.isStar());
    def.setPivotResult(wFnInfo.isPivotResult());
    ShapeDetails inpShape = wdwTFnDef.getRawInputShape();


    /*
     * translate args
     */
    ArrayList<ASTNode> args = spec.getArgs();
    if (args != null)
    {
      for (ASTNode expr : args)
      {
        PTFExpressionDef argDef = null;
        try {
          argDef = buildExpressionDef(inpShape, expr);
        } catch (HiveException he) {
          throw new SemanticException(he);
        }
        def.addArg(argDef);
      }
    }


    if (FunctionRegistry.isRankingFunction(spec.getName())){
      setupRankingArgs(wdwTFnDef, def, spec);
    }


    WindowSpec wdwSpec = spec.getWindowSpec();
    if (wdwSpec != null) {
      String desc = spec.toString();


      WindowFrameDef wdwFrame = translate(spec.getName(), inpShape, wdwSpec);
      if (!wFnInfo.isSupportsWindow())
      {
        BoundarySpec start = wdwSpec.getWindowFrame().getStart();
        if (start.getAmt() != BoundarySpec.UNBOUNDED_AMOUNT) {
          throw new SemanticException(
              String.format("Expecting left window frame boundary for " +

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Examples of org.apache.hadoop.hive.ql.exec.WindowFunctionInfo

   * - A Window Specification with no Order and no Window Frame is interpreted as:
         ROW BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING
   */
  private void effectiveWindowFrame(WindowFunctionSpec wFn, WindowSpec wdwSpec) {


    WindowFunctionInfo wFnInfo = FunctionRegistry.getWindowFunctionInfo(wFn.getName());
    boolean supportsWindowing = wFnInfo == null ? true : wFnInfo.isSupportsWindow();
    WindowFrameSpec wFrame = wdwSpec.getWindowFrame();
    OrderSpec orderSpec = wdwSpec.getOrder();
    if ( wFrame == null ) {
      if (!supportsWindowing ) {

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Examples of org.apache.hadoop.hive.ql.exec.WindowFunctionInfo

    return def;
  }


  private WindowFunctionDef translate(WindowTableFunctionDef wdwTFnDef,
      WindowFunctionSpec spec) throws SemanticException {
    WindowFunctionInfo wFnInfo = FunctionRegistry.getWindowFunctionInfo(spec.getName());
    WindowFunctionDef def = new WindowFunctionDef();
    def.setName(spec.getName());
    def.setAlias(spec.getAlias());
    def.setDistinct(spec.isDistinct());
    def.setExpressionTreeString(spec.getExpression().toStringTree());
    def.setStar(spec.isStar());
    def.setPivotResult(wFnInfo.isPivotResult());
    ShapeDetails inpShape = wdwTFnDef.getRawInputShape();


    /*
     * translate args
     */
    ArrayList<ASTNode> args = spec.getArgs();
    if (args != null)
    {
      for (ASTNode expr : args)
      {
        PTFExpressionDef argDef = null;
        try {
          argDef = buildExpressionDef(inpShape, expr);
        }
        catch(HiveException he) {
          throw new SemanticException(he);
        }
        def.addArg(argDef);
      }
    }


    if (RANKING_FUNCS.contains(spec.getName()))
    {
      setupRankingArgs(wdwTFnDef, def, spec);
    }


    WindowSpec wdwSpec = spec.getWindowSpec();
    if ( wdwSpec != null ) {
      String desc = spec.toString();


      WindowFrameDef wdwFrame = translate(spec.getName(), inpShape, wdwSpec);
      if (!wFnInfo.isSupportsWindow() )
      {
        BoundarySpec start = wdwSpec.getWindowFrame().getStart();
        if ( start.getAmt() != BoundarySpec.UNBOUNDED_AMOUNT ) {
          throw new SemanticException(
          String.format("Expecting left window frame boundary for " +

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Examples of org.apache.hadoop.hive.ql.exec.WindowFunctionInfo

        || exprTokenType == HiveParser.TOK_FUNCTIONSTAR) {
      assert (expressionTree.getChildCount() != 0);
      if (expressionTree.getChild(0).getType() == HiveParser.Identifier) {
        String functionName = unescapeIdentifier(expressionTree.getChild(0)
            .getText());
        WindowFunctionInfo fi = FunctionRegistry.getWindowFunctionInfo(functionName);
        if (fi != null) {
          aggregations.add(expressionTree);
          return;
        }
      }

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