public class GenericUDFInFile extends GenericUDF
GenericUDF.DeferredJavaObject, GenericUDF.DeferredObject
Constructor and Description |
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GenericUDFInFile() |
Modifier and Type | Method and Description |
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void |
copyToNewInstance(Object newInstance)
Some information may be set during initialize() which needs to be saved when the UDF is copied.
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Object |
evaluate(GenericUDF.DeferredObject[] arguments)
Evaluate the GenericUDF with the arguments.
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String |
getDisplayString(String[] children)
Get the String to be displayed in explain.
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String[] |
getRequiredFiles() |
ObjectInspector |
initialize(ObjectInspector[] arguments)
Initialize this GenericUDF.
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checkArgGroups, checkArgPrimitive, checkArgsSize, close, configure, flip, getArgOrder, getConstantBooleanValue, getConstantIntValue, getConstantStringValue, getDateValue, getDoubleValue, getFuncName, getIntervalDayTimeValue, getIntervalYearMonthValue, getIntValue, getLongValue, getRequiredJars, getStandardDisplayString, getStandardDisplayString, getStringValue, getTimestampValue, getUdfName, initializeAndFoldConstants, negative, obtainDateConverter, obtainDoubleConverter, obtainIntConverter, obtainLongConverter, obtainStringConverter, obtainTimestampConverter
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 String[] getRequiredFiles()
getRequiredFiles
in class GenericUDF
public 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 copyToNewInstance(Object newInstance) throws UDFArgumentException
GenericUDF
copyToNewInstance
in class GenericUDF
UDFArgumentException
public String getDisplayString(String[] children)
GenericUDF
getDisplayString
in class GenericUDF
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