brahms.io
Class CreateChecksumActivity

java.lang.Object
  gov.nasa.arc.brahms.vm.api.jac.AbstractExternalActivity
      brahms.io.CreateChecksumActivity

All Implemented Interfaces:

IExternalActivity

public class CreateChecksumActivity
extends AbstractExternalActivity

The CreateChecksumActivity allows a modeler to generate a CRC-32 checksum for a file. The filename of the file must be an absolute path to the file. If the specified file does not exist the checksum will fail.

This activity requires three parameters in the Brahms java activity declaration:

• string filename (the absolute path of the file)
• long crc32Checksum (return value with the CRC-32 checksum, -1 if failed)
• boolean success (return value indicating whether the checksum was generated)

Version:

$Revision: 1.2 $ $Date: 2009/05/28 15:31:20 $ $Author: rvhoof $

Author:

Ron van Hoof

Constructor Summary

CreateChecksumActivity()

Method Summary

static long	createChecksum(java.io.File file) Creates a checksum for the specified file.
void	doActivity() Executes the java activity action.

Methods inherited from class gov.nasa.arc.brahms.vm.api.jac.AbstractExternalActivity

addBeliefRelationConcept, addFactRelationConcept, assertBelief, assertFact, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, convertCurrent, getBeliefAttributeBoolean, getBeliefAttributeBoolean, getBeliefAttributeBoolean, getBeliefAttributeByte, getBeliefAttributeByte, getBeliefAttributeByte, getBeliefAttributeChar, getBeliefAttributeChar, getBeliefAttributeChar, getBeliefAttributeConcept, getBeliefAttributeConcept, getBeliefAttributeConcept, getBeliefAttributeDouble, getBeliefAttributeDouble, getBeliefAttributeDouble, getBeliefAttributeFloat, getBeliefAttributeFloat, getBeliefAttributeFloat, getBeliefAttributeInt, getBeliefAttributeInt, getBeliefAttributeInt, getBeliefAttributeJava, getBeliefAttributeJava, getBeliefAttributeJava, getBeliefAttributeLong, getBeliefAttributeLong, getBeliefAttributeLong, getBeliefAttributeMap, getBeliefAttributeShort, getBeliefAttributeShort, getBeliefAttributeShort, getBeliefAttributeSortedMap, getBeliefAttributeString, getBeliefAttributeString, getBeliefAttributeString, getBeliefAttributeValue, getBeliefAttributeValue, getBeliefAttributeValue, getBeliefRelationConcepts, getContext, getFactAttributeBoolean, getFactAttributeBoolean, getFactAttributeBoolean, getFactAttributeByte, getFactAttributeByte, getFactAttributeByte, getFactAttributeChar, getFactAttributeChar, getFactAttributeChar, getFactAttributeConcept, getFactAttributeConcept, getFactAttributeConcept, getFactAttributeDouble, getFactAttributeDouble, getFactAttributeDouble, getFactAttributeFloat, getFactAttributeFloat, getFactAttributeFloat, getFactAttributeInt, getFactAttributeInt, getFactAttributeInt, getFactAttributeJava, getFactAttributeJava, getFactAttributeJava, getFactAttributeLong, getFactAttributeLong, getFactAttributeLong, getFactAttributeMap, getFactAttributeShort, getFactAttributeShort, getFactAttributeShort, getFactAttributeSortedMap, getFactAttributeString, getFactAttributeString, getFactAttributeString, getFactAttributeValue, getFactAttributeValue, getFactAttributeValue, getFactRelationConcepts, getModel, getName, getParameter, getParameterBoolean, getParameterByte, getParameterChar, getParameterConcept, getParameterCount, getParameterDouble, getParameterFloat, getParameterInt, getParameterJava, getParameterLong, getParameterShort, getParameterString, getParameterStringOrSymbol, getParameterSymbol, getParameterValue, getParameterValues, getPerformedBy, getVMController, getWorldState, hasBeliefAttributeAnyValue, hasBeliefAttributeAnyValue, hasBeliefAttributeAnyValue, hasBeliefAttributeValue, hasBeliefAttributeValue, hasBeliefAttributeValue, hasBeliefRelationAnyValue, hasBeliefRelationValue, hasFactAttributeAnyValue, hasFactAttributeAnyValue, hasFactAttributeAnyValue, hasFactAttributeValue, hasFactAttributeValue, hasFactAttributeValue, hasFactRelationAnyValue, hasFactRelationValue, hasMultipleParameterValues, isParameterUnbound, isParameterUnknown, isValidTruthValue, removeAllBeliefRelationValues, removeAllFactRelationValues, removeBeliefRelationConcept, removeFactRelationConcept, retractBelief, retractFact, send, send, send, send, setActivity, setBeliefAttributeBoolean, setBeliefAttributeBoolean, setBeliefAttributeBoolean, setBeliefAttributeByte, setBeliefAttributeByte, setBeliefAttributeByte, setBeliefAttributeChar, setBeliefAttributeChar, setBeliefAttributeChar, setBeliefAttributeConcept, setBeliefAttributeConcept, setBeliefAttributeConcept, setBeliefAttributeDouble, setBeliefAttributeDouble, setBeliefAttributeDouble, setBeliefAttributeFloat, setBeliefAttributeFloat, setBeliefAttributeFloat, setBeliefAttributeInt, setBeliefAttributeInt, setBeliefAttributeInt, setBeliefAttributeJava, setBeliefAttributeJava, setBeliefAttributeJava, setBeliefAttributeJava, setBeliefAttributeJava, setBeliefAttributeJava, setBeliefAttributeLong, setBeliefAttributeLong, setBeliefAttributeLong, setBeliefAttributeShort, setBeliefAttributeShort, setBeliefAttributeShort, setBeliefAttributeString, setBeliefAttributeString, setBeliefAttributeString, setBeliefAttributeSymbol, setBeliefAttributeSymbol, setBeliefAttributeSymbol, setBeliefAttributeUnknown, setBeliefAttributeUnknown, setBeliefAttributeUnknown, setBeliefRelationUnknown, setFactAttributeBoolean, setFactAttributeBoolean, setFactAttributeBoolean, setFactAttributeByte, setFactAttributeByte, setFactAttributeByte, setFactAttributeChar, setFactAttributeChar, setFactAttributeChar, setFactAttributeConcept, setFactAttributeConcept, setFactAttributeConcept, setFactAttributeDouble, setFactAttributeDouble, setFactAttributeDouble, setFactAttributeFloat, setFactAttributeFloat, setFactAttributeFloat, setFactAttributeInt, setFactAttributeInt, setFactAttributeInt, setFactAttributeJava, setFactAttributeJava, setFactAttributeJava, setFactAttributeJava, setFactAttributeJava, setFactAttributeJava, setFactAttributeLong, setFactAttributeLong, setFactAttributeLong, setFactAttributeShort, setFactAttributeShort, setFactAttributeShort, setFactAttributeString, setFactAttributeString, setFactAttributeString, setFactAttributeSymbol, setFactAttributeSymbol, setFactAttributeSymbol, setFactAttributeUnknown, setFactAttributeUnknown, setFactAttributeUnknown, setFactRelationUnknown, setParameterBoolean, setParameterByte, setParameterChar, setParameterConcept, setParameterDouble, setParameterFloat, setParameterInt, setParameterJava, setParameterJava, setParameterLong, setParameterShort, setParameterString, setParameterUnknown, setProperties, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

CreateChecksumActivity

public CreateChecksumActivity()

Method Detail

createChecksum

public static long createChecksum(java.io.File file)
                           throws java.io.IOException

Creates a checksum for the specified file.

Parameters:

file - the file for which to create the checksum

Returns:

long the checksum for the file

Throws:

java.io.IOException - if there was an error creating the checksum

doActivity

public void doActivity()
                throws ExternalException

Executes the java activity action.

Specified by:

doActivity in interface IExternalActivity

Specified by:

doActivity in class AbstractExternalActivity

Throws:

ExternalException - if an unrecoverable error occurs.

See Also:

AbstractExternalActivity.doActivity()