Examples of org.apache.hadoop.hive.ql.udf.generic.GenericUDFIf

Package org.apache.hadoop.hive.ql.udf.generic

Examples of org.apache.hadoop.hive.ql.udf.generic.GenericUDFIf

org.apache.hadoop.hive.ql.udf.generic.GenericUDFIf
IF(expr1,expr2,expr3)
If expr1 is TRUE (expr1 <> 0 and expr1 <> NULL) then IF() returns expr2; otherwise it returns expr3. IF() returns a numeric or string value, depending on the context in which it is used.


    ExprNodeConstantDesc constDesc2 = new ExprNodeConstantDesc(new Integer(1));
    ExprNodeConstantDesc constDesc3 = new ExprNodeConstantDesc(new Integer(2));


    // long column/column IF
    GenericUDFIf udf = new GenericUDFIf();
    List<ExprNodeDesc> children1 = new ArrayList<ExprNodeDesc>();
    children1.add(col1Expr);
    children1.add(col2Expr);
    children1.add(col3Expr);
    ExprNodeGenericFuncDesc exprDesc = new ExprNodeGenericFuncDesc(TypeInfoFactory.booleanTypeInfo, udf,

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    ExprNodeConstantDesc constDesc2 = new ExprNodeConstantDesc(new Integer(1));
    ExprNodeConstantDesc constDesc3 = new ExprNodeConstantDesc(new Integer(2));


    // long column/column IF
    GenericUDFIf udf = new GenericUDFIf();
    List<ExprNodeDesc> children1 = new ArrayList<ExprNodeDesc>();
    children1.add(col1Expr);
    children1.add(col2Expr);
    children1.add(col3Expr);
    ExprNodeGenericFuncDesc exprDesc = new ExprNodeGenericFuncDesc(TypeInfoFactory.booleanTypeInfo, udf,

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org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector

org.apache.hadoop.hive.ql.exec.UDFArgumentTypeException

org.apache.hadoop.hive.ql.exec.UDFArgumentLengthException

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