public class GenericUDFInFile extends GenericUDF
GenericUDF.DeferredJavaObject, GenericUDF.DeferredObject
Constructor and Description |
---|
GenericUDFInFile() |
Modifier and Type | Method and Description |
---|---|
java.lang.Object |
evaluate(GenericUDF.DeferredObject[] arguments)
Evaluate the GenericUDF with the arguments.
|
java.lang.String |
getDisplayString(java.lang.String[] children)
Get the String to be displayed in explain.
|
java.lang.String[] |
getRequiredFiles() |
ObjectInspector |
initialize(ObjectInspector[] arguments)
Initialize this GenericUDF.
|
void |
load(java.io.InputStream is)
Load the file from an InputStream.
|
close, configure, 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.String[] getRequiredFiles()
getRequiredFiles
in class GenericUDF
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 void load(java.io.InputStream is) throws HiveException
is
- The InputStream contains the file data.HiveException
public java.lang.String getDisplayString(java.lang.String[] children)
GenericUDF
getDisplayString
in class GenericUDF
Copyright © 2012 The Apache Software Foundation