Package org.apache.hadoop.hive.ql.exec

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

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      if (expressionTree.getChild(0).getType() == HiveParser.Identifier) {
        String functionName = unescapeIdentifier(expressionTree.getChild(0)
            .getText());
        if (FunctionRegistry.getGenericUDAFResolver(functionName) != null) {
          aggregations.put(expressionTree.toStringTree(), expressionTree);
          FunctionInfo fi = FunctionRegistry.getFunctionInfo(functionName);
          if (!fi.isNative()) {
            unparseTranslator.addIdentifierTranslation((ASTNode) expressionTree
                .getChild(0));
          }
          return;
        }
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    int udtfExprType = udtfExpr.getType();
    if (udtfExprType == HiveParser.TOK_FUNCTION
        || udtfExprType == HiveParser.TOK_FUNCTIONSTAR) {
      String funcName = TypeCheckProcFactory.DefaultExprProcessor
          .getFunctionText(udtfExpr, true);
      FunctionInfo fi = FunctionRegistry.getFunctionInfo(funcName);
      if (fi != null) {
        genericUDTF = fi.getGenericUDTF();
      }
      isUDTF = (genericUDTF != null);
      if (isUDTF && !fi.isNative()) {
        unparseTranslator.addIdentifierTranslation((ASTNode) udtfExpr
            .getChild(0));
      }
    }
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    this.distinct = distinct;
  }
 
  @explain(displayName="expr")
  public String getExprString() {
    FunctionInfo fI = FunctionRegistry.getInfo(aggregationClass);
    StringBuilder sb = new StringBuilder();
    sb.append(fI.getDisplayName());
    sb.append("(");
    if (distinct) {
      sb.append("DISTINCT ");
    }
    boolean first = true;
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  }
 
  @explain(displayName="expr")
  @Override
  public String getExprString() {
    FunctionInfo fI = FunctionRegistry.getInfo(UDFClass);
    StringBuilder sb = new StringBuilder();
   
    if (fI.getOpType() == FunctionInfo.OperatorType.PREFIX ||
        fI.isAggFunction()) {
      sb.append(fI.getDisplayName());
      if (!fI.isOperator()) {
        sb.append("(");
      }
      else {
        sb.append(" ");
      }
     
      boolean first = true;
      for(exprNodeDesc chld: children) {
        if (!first) {
          sb.append(", ");
        }
        first = false;
       
        sb.append(chld.getExprString());
      }
     
      if(!fI.isOperator()) {
        sb.append(")");
      }
    }
    else if (fI.getOpType() == FunctionInfo.OperatorType.INFIX) {
      // assert that this has only 2 children
      assert(children.size() == 2);
      sb.append("(");
      sb.append(children.get(0).getExprString());
      sb.append(" ");
      sb.append(fI.getDisplayName());
      sb.append(" ");
      sb.append(children.get(1).getExprString());
      sb.append(")");
    }
    else if (fI.getOpType() == FunctionInfo.OperatorType.POSTFIX) {
      // assert for now as there should be no such case
      assert(children.size() == 1);
      sb.append(children.get(0).getExprString());
      sb.append(" ");
      sb.append(fI.getDisplayName());
    }
   
    return sb.toString();
  }
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        if (FunctionRegistry.getGenericUDAFResolver(functionName) != null) {
          if(containsLeadLagUDF(expressionTree)) {
            throw new SemanticException(ErrorMsg.MISSING_OVER_CLAUSE.getMsg(functionName));
          }
          aggregations.put(expressionTree.toStringTree(), expressionTree);
          FunctionInfo fi = FunctionRegistry.getFunctionInfo(functionName);
          if (!fi.isNative()) {
            unparseTranslator.addIdentifierTranslation((ASTNode) expressionTree
                .getChild(0));
          }
          return;
        }
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    int udtfExprType = udtfExpr.getType();
    if (udtfExprType == HiveParser.TOK_FUNCTION
        || udtfExprType == HiveParser.TOK_FUNCTIONSTAR) {
      String funcName = TypeCheckProcFactory.DefaultExprProcessor
          .getFunctionText(udtfExpr, true);
      FunctionInfo fi = FunctionRegistry.getFunctionInfo(funcName);
      if (fi != null) {
        genericUDTF = fi.getGenericUDTF();
      }
      isUDTF = (genericUDTF != null);
      if (isUDTF) {
        globalLimitCtx.setHasTransformOrUDTF(true);
      }
      if (isUDTF && !fi.isNative()) {
        unparseTranslator.addIdentifierTranslation((ASTNode) udtfExpr
            .getChild(0));
      }
      if (isUDTF && (selectStar = udtfExprType == HiveParser.TOK_FUNCTIONSTAR)) {
        genColListRegex(".*", null, (ASTNode) udtfExpr.getChild(0),
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     * @throws UDFArgumentException
     */
    static ExprNodeDesc getFuncExprNodeDescWithUdfData(String udfName, Object udfData,
        ExprNodeDesc... children) throws UDFArgumentException {

      FunctionInfo fi = FunctionRegistry.getFunctionInfo(udfName);
      if (fi == null) {
        throw new UDFArgumentException(udfName + " not found.");
      }

      GenericUDF genericUDF = fi.getGenericUDF();
      if (genericUDF == null) {
        throw new UDFArgumentException(udfName
            + " is an aggregation function or a table function.");
      }

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          throw new SemanticException(ErrorMsg.NON_COLLECTION_TYPE.getMsg(expr,
              myt.getTypeName()));
        }
      } else {
        // other operators or functions
        FunctionInfo fi = FunctionRegistry.getFunctionInfo(funcText);

        if (fi == null) {
          if (isFunction) {
            throw new SemanticException(ErrorMsg.INVALID_FUNCTION
                .getMsg((ASTNode) expr.getChild(0)));
          } else {
            throw new SemanticException(ErrorMsg.INVALID_FUNCTION.getMsg(expr));
          }
        }

        // getGenericUDF() actually clones the UDF. Just call it once and reuse.
        GenericUDF genericUDF = fi.getGenericUDF();

        if (!fi.isNative()) {
          ctx.getUnparseTranslator().addIdentifierTranslation(
              (ASTNode) expr.getChild(0));
        }

        // Handle type casts that may contain type parameters
        if (isFunction) {
          ASTNode funcNameNode = (ASTNode)expr.getChild(0);
          switch (funcNameNode.getType()) {
            case HiveParser.TOK_VARCHAR:
              // Add type params
              VarcharTypeParams varcharTypeParams = new VarcharTypeParams();
              varcharTypeParams.length = Integer.valueOf((funcNameNode.getChild(0).getText()));
              if (genericUDF != null) {
                ((SettableUDF)genericUDF).setParams(varcharTypeParams);
              }
              break;
            default:
              // Do nothing
              break;
          }
        }

        // Detect UDTF's in nested SELECT, GROUP BY, etc as they aren't
        // supported
        if (fi.getGenericUDTF() != null) {
          throw new SemanticException(ErrorMsg.UDTF_INVALID_LOCATION.getMsg());
        }
        // UDAF in filter condition, group-by caluse, param of funtion, etc.
        if (fi.getGenericUDAFResolver() != null) {
          if (isFunction) {
            throw new SemanticException(ErrorMsg.UDAF_INVALID_LOCATION.
                getMsg((ASTNode) expr.getChild(0)));
          } else {
            throw new SemanticException(ErrorMsg.UDAF_INVALID_LOCATION.getMsg(expr));
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     * @throws UDFArgumentException
     */
    public static ExprNodeDesc getFuncExprNodeDesc(String udfName,
        ExprNodeDesc... children) throws UDFArgumentException {

      FunctionInfo fi = FunctionRegistry.getFunctionInfo(udfName);
      if (fi == null) {
        throw new UDFArgumentException(udfName + " not found.");
      }

      GenericUDF genericUDF = fi.getGenericUDF();
      if (genericUDF == null) {
        throw new UDFArgumentException(udfName
            + " is an aggregation function or a table function.");
      }

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          throw new SemanticException(ErrorMsg.NON_COLLECTION_TYPE.getMsg(expr,
              myt.getTypeName()));
        }
      } else {
        // other operators or functions
        FunctionInfo fi = FunctionRegistry.getFunctionInfo(funcText);

        if (fi == null) {
          if (isFunction) {
            throw new SemanticException(ErrorMsg.INVALID_FUNCTION
                .getMsg((ASTNode) expr.getChild(0)));
          } else {
            throw new SemanticException(ErrorMsg.INVALID_FUNCTION.getMsg(expr));
          }
        }

        if (!fi.isNative()) {
          ctx.getUnparseTranslator().addIdentifierTranslation(
              (ASTNode) expr.getChild(0));
        }

        // Detect UDTF's in nested SELECT, GROUP BY, etc as they aren't
        // supported
        if (fi.getGenericUDTF() != null) {
          throw new SemanticException(ErrorMsg.UDTF_INVALID_LOCATION.getMsg());
        }
        if (!ctx.getAllowStatefulFunctions() && (fi.getGenericUDF() != null)) {
          if (FunctionRegistry.isStateful(fi.getGenericUDF())) {
            throw new SemanticException(
              ErrorMsg.UDF_STATEFUL_INVALID_LOCATION.getMsg());
          }
        }

        desc = ExprNodeGenericFuncDesc.newInstance(fi.getGenericUDF(), children);
      }
      // UDFOPPositive is a no-op.
      // However, we still create it, and then remove it here, to make sure we
      // only allow
      // "+" for numeric types.
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