Class HashFunction
- java.lang.Object
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- org.eclipse.rdf4j.query.algebra.evaluation.function.hash.HashFunction
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Constructor Summary
Constructors Constructor Description HashFunction()
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description abstract Literalevaluate(ValueFactory valueFactory, Value... args)Evaluate the function over the supplied input arguments, using the suppliedValueFactoryto produce the result.protected Stringhash(String text, String algorithm)Calculate hash value, represented as hexadecimal string.-
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.eclipse.rdf4j.query.algebra.evaluation.function.Function
evaluate, getURI, mustReturnDifferentResult
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Method Detail
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hash
protected String hash(String text, String algorithm) throws NoSuchAlgorithmException
Calculate hash value, represented as hexadecimal string.- Parameters:
text- textalgorithm- name of the hash algorithm- Returns:
- hexadecimal string (padded with leading zeros if needed)
- Throws:
NoSuchAlgorithmException
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evaluate
public abstract Literal evaluate(ValueFactory valueFactory, Value... args) throws ValueExprEvaluationException
Description copied from interface:FunctionEvaluate the function over the supplied input arguments, using the suppliedValueFactoryto produce the result.- Specified by:
evaluatein interfaceFunction- Parameters:
valueFactory- aValueFactoryto use for producing the function result.args- the function input arguments.- Returns:
- the function result value.
- Throws:
ValueExprEvaluationException
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