org.objectweb.medor.filter.lib
Class FirstLocate
java.lang.Object
|
+--org.objectweb.medor.filter.lib.BasicBinaryOperator
|
+--org.objectweb.medor.filter.lib.FirstLocate
- All Implemented Interfaces:
- BinaryOperator, Cloneable, java.lang.Cloneable, Expression, Operator
- public class FirstLocate
- extends BasicBinaryOperator
- implements BinaryOperator
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 |
Method Summary |
void |
compileExpression()
Checks the semantic integrity of an expression. |
void |
evaluate(ParameterOperand[] pos,
Tuple t)
It evaluates the expression tree and puts the result into the operand
result. |
int |
evaluate(java.lang.String op1,
java.lang.String op2)
|
java.lang.String |
getOperatorString()
Returns the String representing the operator in Java |
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.api.Cloneable |
clone |
FirstLocate
public FirstLocate(Expression substring,
Expression instring)
- Returns the first position of an Expression (first parameter) in another
Expression (second parameter).
Unlike in Java, the index is 1 for the first position, and not zero.
- Parameters:
substring
- is the Expression to be tested as a subexpressioninstring
- is the Expression which may contain the left Expression.
FirstLocate
public FirstLocate()
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 ParameterOperandt
- Tuple
- Throws:
java.lang.IllegalStateException
- if this expression is not
compiled.
MedorException
- if evaluation error
evaluate
public int evaluate(java.lang.String op1,
java.lang.String op2)
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.
getOperatorString
public java.lang.String getOperatorString()
- Description copied from interface:
Operator
- Returns the String representing the operator in Java
- Specified by:
getOperatorString
in interface Operator
- Returns:
- the String representing the operator in Java