public class GenericUDFToVarchar extends GenericUDF implements SettableUDF, java.io.Serializable
GenericUDF.DeferredJavaObject, GenericUDF.DeferredObject
Constructor and Description |
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GenericUDFToVarchar() |
Modifier and Type | Method and Description |
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java.lang.Object |
evaluate(GenericUDF.DeferredObject[] arguments)
Evaluate the GenericUDF with the arguments.
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java.lang.String |
getDisplayString(java.lang.String[] children)
Get the String to be displayed in explain.
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java.lang.Object |
getParams() |
ObjectInspector |
initialize(ObjectInspector[] arguments)
Initialize this GenericUDF.
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void |
setParams(java.lang.Object typeParams)
Provide varchar type parameters for the output object inspector.
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close, configure, getRequiredFiles, getRequiredJars, initializeAndFoldConstants
public ObjectInspector initialize(ObjectInspector[] arguments) throws UDFArgumentException
GenericUDF
initialize
in class GenericUDF
arguments
- The ObjectInspector for the argumentsUDFArgumentException
- Thrown when arguments have wrong types, wrong length, etc.public java.lang.Object evaluate(GenericUDF.DeferredObject[] arguments) throws HiveException
GenericUDF
evaluate
in class GenericUDF
arguments
- The arguments as DeferedObject, use DeferedObject.get() to get the
actual argument Object. The Objects can be inspected by the
ObjectInspectors passed in the initialize call.HiveException
public java.lang.String getDisplayString(java.lang.String[] children)
GenericUDF
getDisplayString
in class GenericUDF
public void setParams(java.lang.Object typeParams) throws UDFArgumentException
setParams
in interface SettableUDF
typeParams
- UDF-specific data to add to the UDFUDFArgumentException
public java.lang.Object getParams()
getParams
in interface SettableUDF
Copyright © 2012 The Apache Software Foundation