Package org.apache.hadoop.hive.ql.plan.PTFDesc

Examples of org.apache.hadoop.hive.ql.plan.PTFDesc.WindowFunctionDef

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     */
    ArrayList<WindowFunctionDef> windowFunctions = new ArrayList<WindowFunctionDef>();
    if (wdwSpec.getWindowExpressions() != null) {
      for (WindowExpressionSpec expr : wdwSpec.getWindowExpressions()) {
        if (expr instanceof WindowFunctionSpec) {
          WindowFunctionDef wFnDef = translate(wdwTFnDef, (WindowFunctionSpec) expr);
          windowFunctions.add(wFnDef);
        }
      }
      wdwTFnDef.setWindowFunctions(windowFunctions);
    }

    /*
     * set outputFromWdwFnProcessing
     */
    ArrayList<String> aliases = new ArrayList<String>();
    ArrayList<ObjectInspector> fieldOIs = new ArrayList<ObjectInspector>();
    for (WindowFunctionDef wFnDef : windowFunctions) {
      aliases.add(wFnDef.getAlias());
      if (wFnDef.isPivotResult()) {
        fieldOIs.add(((ListObjectInspector) wFnDef.getOI()).getListElementObjectInspector());
      } else {
        fieldOIs.add(wFnDef.getOI());
      }
    }
    PTFTranslator.addInputColumnsToList(inpShape, aliases, fieldOIs);
    StructObjectInspector wdwOutOI = ObjectInspectorFactory.getStandardStructObjectInspector(
        aliases, fieldOIs);
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  }

  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 " +
                  "function %s to be unbounded. Found : %d", desc, start.getAmt()));
        }
        BoundarySpec end = wdwSpec.getWindowFrame().getEnd();
        if (end.getAmt() != BoundarySpec.UNBOUNDED_AMOUNT) {
          throw new SemanticException(
              String.format("Expecting right window frame boundary for " +
                  "function %s to be unbounded. Found : %d", desc, start.getAmt()));
        }
      }
      def.setWindowFrame(wdwFrame);
    }

    try {
      setupWdwFnEvaluator(def);
    } catch (HiveException he) {
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     */
    ArrayList<WindowFunctionDef> windowFunctions = new ArrayList<WindowFunctionDef>();
    if (wdwSpec.getWindowExpressions() != null) {
      for (WindowExpressionSpec expr : wdwSpec.getWindowExpressions()) {
        if (expr instanceof WindowFunctionSpec) {
          WindowFunctionDef wFnDef = translate(wdwTFnDef, (WindowFunctionSpec) expr);
          windowFunctions.add(wFnDef);
        }
      }
      wdwTFnDef.setWindowFunctions(windowFunctions);
    }

    /*
     * set outputFromWdwFnProcessing
     */
    ArrayList<String> aliases = new ArrayList<String>();
    ArrayList<ObjectInspector> fieldOIs = new ArrayList<ObjectInspector>();
    for (WindowFunctionDef wFnDef : windowFunctions) {
      aliases.add(wFnDef.getAlias());
      if (wFnDef.isPivotResult()) {
        fieldOIs.add(((ListObjectInspector) wFnDef.getOI()).getListElementObjectInspector());
      } else {
        fieldOIs.add(wFnDef.getOI());
      }
    }
    PTFTranslator.addInputColumnsToList(inpShape, aliases, fieldOIs);
    StructObjectInspector wdwOutOI = ObjectInspectorFactory.getStandardStructObjectInspector(
        aliases, fieldOIs);
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  }

  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 " +
                  "function %s to be unbounded. Found : %d", desc, start.getAmt()));
        }
        BoundarySpec end = wdwSpec.getWindowFrame().getEnd();
        if (end.getAmt() != BoundarySpec.UNBOUNDED_AMOUNT) {
          throw new SemanticException(
              String.format("Expecting right window frame boundary for " +
                  "function %s to be unbounded. Found : %d", desc, start.getAmt()));
        }
      }
      def.setWindowFrame(wdwFrame);
    }

    try {
      setupWdwFnEvaluator(def);
    } catch (HiveException he) {
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     */
    ArrayList<WindowFunctionDef> windowFunctions = new ArrayList<WindowFunctionDef>();
    if ( wdwSpec.getWindowExpressions() != null ) {
      for(WindowExpressionSpec expr : wdwSpec.getWindowExpressions()) {
        if ( expr instanceof WindowFunctionSpec) {
          WindowFunctionDef wFnDef = translate(wdwTFnDef, (WindowFunctionSpec)expr);
          windowFunctions.add(wFnDef);
        }
      }
      wdwTFnDef.setWindowFunctions(windowFunctions);
    }

    /*
     * set outputFromWdwFnProcessing
     */
    if ( windowFunctions.size() > 0 ) {
      ArrayList<String> aliases = new ArrayList<String>();
      ArrayList<ObjectInspector> fieldOIs = new ArrayList<ObjectInspector>();
      for(WindowFunctionDef wFnDef : windowFunctions) {
        aliases.add(wFnDef.getAlias());
        if ( wFnDef.isPivotResult() ) {
          fieldOIs.add(((ListObjectInspector)wFnDef.getOI()).getListElementObjectInspector());
        } else {
          fieldOIs.add(wFnDef.getOI());
        }
      }
      PTFTranslator.addInputColumnsToList(inpShape, aliases, fieldOIs);
      StructObjectInspector wdwOutOI = ObjectInspectorFactory.getStandardStructObjectInspector(
          aliases, fieldOIs);
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  }

  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 " +
              "function %s to be unbounded. Found : %d", desc, start.getAmt())
              );
        }
        BoundarySpec end = wdwSpec.getWindowFrame().getEnd();
        if ( end.getAmt() != BoundarySpec.UNBOUNDED_AMOUNT ) {
          throw new SemanticException(
              String.format("Expecting right window frame boundary for " +
              "function %s to be unbounded. Found : %d", desc, start.getAmt()));
        }
      }
      def.setWindowFrame(wdwFrame);
    }

    try {
      setupWdwFnEvaluator(def);
    }
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Related Classes of org.apache.hadoop.hive.ql.plan.PTFDesc.WindowFunctionDef

  • org.apache.hadoop.hive.ql.parse.PTFTranslator
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