org.objectweb.medor.filter.lib
Class BasicBinaryLogicalOperator

java.lang.Object
  |
  +--org.objectweb.medor.filter.lib.BasicBinaryOperator
        |
        +--org.objectweb.medor.filter.lib.BasicBinaryLogicalOperator
All Implemented Interfaces:
BinaryLogicalOperator, BinaryOperator, Cloneable, java.lang.Cloneable, Expression, Operator
Direct Known Subclasses:
And, ConditionalAnd, ConditionalOr, Or

public abstract class BasicBinaryLogicalOperator
extends BasicBinaryOperator
implements BinaryLogicalOperator

Author:
Sebastien Chassande-Barrioz

Field Summary
 
Fields inherited from class org.objectweb.medor.filter.lib.BasicBinaryOperator
left, leftResult, result, right, rightResult, type, verified
 
Fields inherited from interface org.objectweb.medor.filter.api.Operator
ABS, AND, BITWIZE, CONCAT, CONDAND, CONDOR, DIV, EQUAL, FIRSTLOCATE, GREATER, GREATEREQUAL, IN, INDEXEDLOCATE, LENGTH, LOWER, LOWEREQUAL, MEMBEROF, MINUS, MULT, NAV, NOT, NOTEQUAL, NOTMEMBEROF, OR, PLUS, SQRT, SUBSTRING, UMINUS
 
Constructor Summary
BasicBinaryLogicalOperator()
           
 
Method Summary
 void compileExpression()
          Checks the semantic integrity of an expression.
abstract  boolean evaluate(boolean b1, boolean b2)
           
 void evaluate(ParameterOperand[] pos, Tuple t)
          It evaluates the expression tree and puts the result into the operand result.
 
Methods inherited from class org.objectweb.medor.filter.lib.BasicBinaryOperator
clone, getExpression, getLeftExpression, getOperandNumber, getResult, getRightExpression, getType, isCompiled, setExpression, setLeftExpression, setRightExpression
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.objectweb.medor.filter.api.BinaryOperator
getLeftExpression, getRightExpression, setLeftExpression, setRightExpression
 
Methods inherited from interface org.objectweb.medor.filter.api.Operator
getExpression, getOperandNumber, getOperatorString, setExpression
 
Methods inherited from interface org.objectweb.medor.filter.api.Expression
getResult, getType, isCompiled
 
Methods inherited from interface org.objectweb.medor.api.Cloneable
clone
 

Constructor Detail

BasicBinaryLogicalOperator

public BasicBinaryLogicalOperator()
Method Detail

evaluate

public void evaluate(ParameterOperand[] pos,
                     Tuple t)
              throws MedorException,
                     java.lang.IllegalStateException
Description copied from interface: Expression
It evaluates the expression tree and puts the result into the operand result.

Specified by:
evaluate in interface Expression
Specified by:
evaluate in class BasicBinaryOperator
Parameters:
pos - a list of ParameterOperand
t - Tuple
Throws:
java.lang.IllegalStateException - if this expression is not compiled.
MedorException - if evaluation error

evaluate

public abstract boolean evaluate(boolean b1,
                                 boolean b2)
Specified by:
evaluate in interface BinaryLogicalOperator

compileExpression

public void compileExpression()
                       throws TypingException,
                              MalformedExpressionException
Description copied from interface: Expression
Checks the semantic integrity of an expression. It checks that all types are compatible and prepare the expression to be evaluable.It also creates buffers where stores the result. Notes that when evaluating there is no creation of new objects. This method change the state of this expression object, it will be evaluable and not modifiable.

Specified by:
compileExpression in interface Expression
Throws:
MalformedExpressionException - if syntax error
TypingException - when incompatible types error occures.