org.problets.domain.model.expression.node.operator.relational
Class NotEquals

java.lang.Object
  org.problets.domain.model.DomainModel
      org.problets.domain.model.expression.node.NodeModel
          org.problets.domain.model.expression.node.operator.Operator
              org.problets.domain.model.expression.node.operator.relational.Relational
                  org.problets.domain.model.expression.node.operator.relational.NotEquals

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

VBNotEquals

public class NotEquals
extends Relational

To represent not equal to operator

Author:

Joshua Go, Amruth Kumar

Field Summary

static java.lang.String

SYMBOL

Fields inherited from class org.problets.domain.model.expression.node.operator.relational.Relational

MIXED_OPERANDS, TOTAL_OPERATORS

Fields inherited from class org.problets.domain.model.expression.node.operator.Operator

INCORRECT_OPERAND_COUNT

Fields inherited from class org.problets.domain.model.DomainModel

BOOLEAN, BREAKPOINT, CHARACTER, DOUBLE_PRECISION_REAL, ERROR_TYPE, EVAL_STATUS, expACTION, expASSIGNMENT, expAUTO_DEALLOCATION, expCALL, expCONDITION, expDECLARATION, expDEREFERENCING, expDYNAMIC_ALLOCATION, expDYNAMIC_ALLOCATION_INITIALIZATION, expDYNAMIC_DEALLOCATION, expELSE_CLAUSE, expERROR, expEXECUTION, expIF_CLAUSE, expINITIALIZATION, expINPUT, expPARAMETER_PASSING, expPRINT, expQUESTIONABLE, expREFERENCING, expRETURN, expRUNTIME_ERROR, expSEMANTIC_ERROR, expSYNTAX_ERROR, expUPDATE, IDENTITY, MAX_OBJECT_IDENTITY, MIN_OBJECT_IDENTITY, QUADRUPLE_PRECISION_REAL, RUNTIME_ERROR, SEMANTIC_ERROR, SIGNED_INTEGER, SIGNED_LONG, SIGNED_SHORT, SINGLE_PRECISION_REAL, SYNTAX_ERROR, UNDEFINED_TYPE, UNSIGNED_INTEGER, UNSIGNED_LONG, UNSIGNED_SHORT, WARNING

Constructor Summary

NotEquals()

Method Summary

Value	evaluate() In Java/C#, <, <=, >, and >= cannot be applied to boolean operands.
void	explain(java.util.Vector explanation, java.util.Vector errors) Textually explains the evaluation of the tree - as opposed to graphical explanation by the view

Methods inherited from class org.problets.domain.model.expression.node.operator.relational.Relational

getQualifiedLearningObject

Methods inherited from class org.problets.domain.model.expression.node.operator.Operator

clone, coerceToReal, contentEquals, contentEquals, getArity, getAssociativity, getLocalLearningObjectives, getOperatorType, getPrecedence, getStudentCopy, getSymbol, grade, locateOperator, main, recursiveContentEquals, recursiveSetValue

Methods inherited from class org.problets.domain.model.expression.node.NodeModel

classifyNodes, getContent, getLeftChild, getNonRecursiveContent, getOrder, getPosition, getRecursiveContent, getRightChild, getSideEffects, getValue, insertInOrder, setLeftChild, setOrder, setPosition, setRightChild, setValue, shortCircuit, skip, subExpToString, toString, valueEquals

Methods inherited from class org.problets.domain.model.DomainModel

getId, getIdName, grade

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

SYMBOL

public static final java.lang.String SYMBOL

See Also:

Constant Field Values

Constructor Detail

NotEquals

public NotEquals()

Method Detail

evaluate

public Value evaluate()

Description copied from class: Relational

In Java/C#, <, <=, >, and >= cannot be applied to boolean operands. == and != can be applied as long as both the operands are boolean. This is being handled here in one shot for all the relational operators although this code could be moved into the 6 different classes for true object-orientation.

Overrides:

evaluate in class Relational

explain

public void explain(java.util.Vector explanation,
                    java.util.Vector errors)

Textually explains the evaluation of the tree - as opposed to graphical explanation by the view

Overrides:

explain in class Relational