Class HashFunction
java.lang.Object
org.eclipse.rdf4j.query.algebra.evaluation.function.hash.HashFunction
- All Implemented Interfaces:
Function
Abstract hash function
- Author:
- jeen
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionabstract Literalevaluate(ValueFactory valueFactory, Value... args) Evaluate the function over the supplied input arguments, using the suppliedValueFactoryto produce the result.protected StringCalculate hash value, represented as hexadecimal string.Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods inherited from interface org.eclipse.rdf4j.query.algebra.evaluation.function.Function
evaluate, getURI, mustReturnDifferentResult
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Constructor Details
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HashFunction
public HashFunction()
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Method Details
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hash
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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