public class GenericUDFRestrictInformationSchema extends GenericUDF
GenericUDF.DeferredJavaObject, GenericUDF.DeferredObject
Modifier and Type | Field and Description |
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protected org.apache.hadoop.io.BooleanWritable |
enabled |
Constructor and Description |
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GenericUDFRestrictInformationSchema() |
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.
|
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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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, getRequiredFiles, 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 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 String getDisplayString(String[] children)
GenericUDF
getDisplayString
in class GenericUDF
public void copyToNewInstance(Object newInstance) throws UDFArgumentException
GenericUDF
copyToNewInstance
in class GenericUDF
UDFArgumentException
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