org.objectweb.medor.expression.lib
Class FirstLocate
java.lang.Object
org.objectweb.medor.clone.lib.BasicCloneable
org.objectweb.medor.expression.lib.BasicExpression
org.objectweb.medor.expression.lib.BasicOperator
org.objectweb.medor.expression.lib.BasicBinaryOperator
org.objectweb.medor.expression.lib.FirstLocate
- All Implemented Interfaces:
- BinaryOperator, org.objectweb.medor.clone.api.Cloneable, java.lang.Cloneable, Expression, Operator, java.io.Serializable
- public class FirstLocate
- extends BasicBinaryOperator
- implements BinaryOperator
- See Also:
- Serialized Form
Fields inherited from interface org.objectweb.medor.expression.api.Operator |
ABS, AND, AVG, BITWIZE, CONCAT, CONDAND, CONDOR, COUNT, DIV, EQUAL, FIRSTLOCATE, GREATER, GREATEREQUAL, IN, INDEXEDLOCATE, LENGTH, LOWER, LOWEREQUAL, MAX, MEMBEROF, MIN, MINUS, MOD, MULT, NAV, NOT, NOTEQUAL, NOTMEMBEROF, OR, PLUS, SQRT, STRING_LOWER, STRING_UPPER, SUBSTRING, SUM, UMINUS |
Methods inherited from class org.objectweb.medor.clone.lib.BasicCloneable |
clone, clone, getClone |
Methods inherited from class java.lang.Object |
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.objectweb.medor.expression.api.Expression |
getType |
Methods inherited from interface org.objectweb.medor.clone.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 expressions[0] Expression.
FirstLocate
public FirstLocate()
evaluate
public Operand evaluate(ParameterOperand[] pos,
java.lang.Object o)
throws ExpressionException
- Description copied from interface:
Expression
- It evaluates the expression tree and puts the result into the operand
result.
- Specified by:
evaluate
in interface Expression
- Parameters:
pos
- a list of ParameterOperando
- the input Object from which values are taken for the
evaluation
- Returns:
- an Operand containing the result of the evaluation
- Throws:
ExpressionException
evaluate
public int evaluate(java.lang.String op1,
java.lang.String op2)
compileExpression
public Operand compileExpression()
throws ExpressionException,
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
ExpressionException
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