/*
* Copyright 2008 Lockheed Martin Corporation, except as stated in the file
* entitled Licensing-Information.
* All modifications copyright 2009-2011 Data Access Technologies, Inc.
* Licensed under the Academic Free License version 3.0
* (http://www.opensource.org/licenses/afl-3.0.php), except as stated
* in the file entitled Licensing-Information.
*
* Contributors:
* MDS - initial API and implementation
*
*/
package org.modeldriven.fuml.library.listfunctions;
import org.modeldriven.fuml.library.LibraryFunctions;
import fUML.Debug;
import fUML.Semantics.Classes.Kernel.IntegerValue;
import fUML.Semantics.Classes.Kernel.Value;
import fUML.Semantics.Classes.Kernel.ValueList;
public class ListGetFunctionBehaviorExecution extends
fUML.Semantics.CommonBehaviors.BasicBehaviors.OpaqueBehaviorExecution {
public void doBody(
fUML.Semantics.CommonBehaviors.BasicBehaviors.ParameterValueList inputParameters,
fUML.Semantics.CommonBehaviors.BasicBehaviors.ParameterValueList outputParameters) {
// Get the list for which to find the element from the first argument
ValueList vl = (ValueList) inputParameters.getValue(0).values;
// Get the position in the list from the second argument
IntegerValue iv = (IntegerValue) inputParameters.getValue(1).values.getValue(0);
int position = iv.value;
Debug.println("[doBody] List Get, position=" + position);
// The position must be 1 or greater, since index is 1-based
if (position < 1) {
Debug.println("[doBody] List Get, invalid value (return nothing).");
// invalid value for 1-based index, return empty list
LibraryFunctions.addEmptyValueListToOutputList(outputParameters);
return;
}
// Find the element based on position
try {
// Find the element in the list by its position. Offset index by 1,
// since the underlying list is 0-based, while this API is 1-based
Value result = vl.getValue(position-1);
Debug.println("[doBody] List Get, result=" + result);
// Add output to the outputParameters list. The output can be a
// reference to the original object in the input list.
LibraryFunctions.addValueToOutputList(result, outputParameters);
} catch (IndexOutOfBoundsException e) {
Debug.println("[doBody] List Get, index out of bounds error (return nothing).");
// If element does not exist, return empty list
LibraryFunctions.addEmptyValueListToOutputList(outputParameters);
}
}
public fUML.Semantics.Classes.Kernel.Value new_() {
// Create a new instance of this kind of function behavior execution.
return new ListGetFunctionBehaviorExecution();
}
} // ListGetFunctionBehaviorExecution