org.objectweb.medor.expression.lib
Class IndexedLocate
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.IndexedLocate
- All Implemented Interfaces:
- org.objectweb.medor.clone.api.Cloneable, java.lang.Cloneable, Expression, Operator, java.io.Serializable
- public class IndexedLocate
- extends BasicOperator
Operator representing the search for a substring within a given input string,
starting at a given index.
- 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 |
Method Summary |
Operand |
compileExpression()
Checks the semantic integrity of an expression. |
Operand |
evaluate(ParameterOperand[] pos,
java.lang.Object o)
It evaluates the expression tree and puts the result into the operand
result. |
int |
evaluate(java.lang.String inputString,
java.lang.String subString,
int fromIndex)
|
java.lang.String |
getOperatorString()
Returns the String representing the operator in Java |
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 |
IndexedLocate
public IndexedLocate(Expression inputString,
Expression substring,
Expression fromIndex)
- Constructs an IndexedLocate operator, representing the search for a
substring in an input string, starting at a given index.
It is the equivalent of the Java indexOf String manipulation method.
If the substring argument occurs as a substring within the
inputString at a starting index no smaller than
fromIndex
, then the index of the first character
of the first such substring is returned. If it does not occur
as a substring starting at fromIndex
or beyond,
-1
is returned.
Unlike in Java, the index starts with 1 and not 0.
- Parameters:
inputString
- the String in which to look.substring
- the substring to search for.fromIndex
- the index to start the search from.
IndexedLocate
public IndexedLocate()
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.
- 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
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.
- Throws:
MalformedExpressionException
- if syntax error
ExpressionException
evaluate
public int evaluate(java.lang.String inputString,
java.lang.String subString,
int fromIndex)
getOperatorString
public java.lang.String getOperatorString()
- Description copied from interface:
Operator
- Returns the String representing the operator in Java
- Returns:
- the String representing the operator in Java