com.eteks.jeks
Class JeksInterpreter
java.lang.Object
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+--com.eteks.parser.DoubleInterpreter
|
+--com.eteks.parser.WrapperInterpreter
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+--com.eteks.jeks.JeksInterpreter
- All Implemented Interfaces:
- Interpreter
- public class JeksInterpreter
- extends WrapperInterpreter
Interpreter used to compute cell values. This interpreter interprets null
cell values as 0.
- Since:
- Jeks 1.0
- Version:
- 1.0
- Author:
- Emmanuel Puybaret
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Method Summary |
java.lang.Object |
getBinaryOperatorValue(java.lang.Object binaryOperatorKey,
java.lang.Object param1,
java.lang.Object param2)
Returns the value of the operation of the binary operator binaryOperatorKey applied on
the two operands operand1 and operand2. |
java.lang.Object |
getCommonFunctionValue(java.lang.Object commonFunctionKey,
java.lang.Object param)
Returns the value of the common function commonFunctionKey with
the parameter param. |
java.lang.Object |
getParameterValue(java.lang.Object parameter)
Returns parameter if it's null an instance of Number,
String, Character, Boolean, Date or
Object [][]. |
java.lang.Object |
getUnaryOperatorValue(java.lang.Object unaryOperatorKey,
java.lang.Object param)
Returns the value of the operation of the unary operator unaryOperatorKey applied
on the operand operand. |
boolean |
isTrue(java.lang.Object param)
Returns true if param is an instance of Number
different of 0, or if param is a true Boolean object.
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| Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
NULL_VALUE
public static final java.lang.Object NULL_VALUE
JeksInterpreter
public JeksInterpreter()
- Creates an interpreter.
isTrue
public boolean isTrue(java.lang.Object param)
- Returns
true if param is an instance of Number
different of 0, or if param is a true Boolean object.
If param is null, this method returns false.
- Overrides:
isTrue in class WrapperInterpreter
- Following copied from class:
com.eteks.parser.WrapperInterpreter
- Parameters:
condition - the value to test (instance of Boolean).- Returns:
- the boolean value of
condition.
getParameterValue
public java.lang.Object getParameterValue(java.lang.Object parameter)
- Returns
parameter if it's null an instance of Number,
String, Character, Boolean, Date or
Object [][].
- Overrides:
getParameterValue in class WrapperInterpreter
- Parameters:
parameter - the computed parameter to evaluate.- Throws:
java.lang.IllegalArgumentException - if parameter class isn't allowed.
getUnaryOperatorValue
public java.lang.Object getUnaryOperatorValue(java.lang.Object unaryOperatorKey,
java.lang.Object param)
- Description copied from class:
WrapperInterpreter
- Returns the value of the operation of the unary operator
unaryOperatorKey applied
on the operand operand. unaryOperatorKey must be the key
of an unary operator of Syntax (one of OPERATOR_POSITIVE,
OPERATOR_OPPOSITE, OPERATOR_LOGICAL_NOT, OPERATOR_BITWISE_NOT).
- Overrides:
getUnaryOperatorValue in class WrapperInterpreter
- Following copied from class:
com.eteks.parser.WrapperInterpreter
- Parameters:
unaryOperatorKey - the key of an unary operator of Syntax.operand - the operand.- Returns:
- the result of the operation. The returned value is an instance of
Double,
Long or Boolean. - Throws:
java.lang.IllegalArgumentException - if operand isn't of the good type for the requested
operator or if unaryOperatorKey isn't the key of an unary
operator of Syntax.
getBinaryOperatorValue
public java.lang.Object getBinaryOperatorValue(java.lang.Object binaryOperatorKey,
java.lang.Object param1,
java.lang.Object param2)
- Description copied from class:
WrapperInterpreter
- Returns the value of the operation of the binary operator
binaryOperatorKey applied on
the two operands operand1 and operand2. binaryOperatorKey
must be the key of a binary operator of Syntax (one of OPERATOR_ADD,
OPERATOR_SUBSTRACT, OPERATOR_MULTIPLY, OPERATOR_DIVIDE,...).
- Overrides:
getBinaryOperatorValue in class WrapperInterpreter
- Following copied from class:
com.eteks.parser.WrapperInterpreter
- Parameters:
binaryOperatorKey - the key of a binary operator of Syntax.operand1 - the first operand.operand2 - the second operand.- Returns:
- the result of the operation. The returned value is an instance of
Double,
Long, Boolean or String. - Throws:
java.lang.IllegalArgumentException - if operand1 and operand2 aren't of
the good type for requested operator or if binaryOperatorKey isn't the key
of a binary operator of Syntax.
getCommonFunctionValue
public java.lang.Object getCommonFunctionValue(java.lang.Object commonFunctionKey,
java.lang.Object param)
- Description copied from class:
WrapperInterpreter
- Returns the value of the common function
commonFunctionKey with
the parameter param. commonFunctionKey must be the key
of a commomon function of Syntax (one of FUNCTION_LN,
FUNCTION_LOG, FUNCTION_EXP, FUNCTION_SQR,...).
- Overrides:
getCommonFunctionValue in class WrapperInterpreter
- Following copied from class:
com.eteks.parser.WrapperInterpreter
- Parameters:
commonFunctionKey - the key of a common function of Syntax.param - the parameter of the function.- Returns:
- the result of the function. The returned value is an instance of
Double,
Long or Boolean. - Throws:
java.lang.IllegalArgumentException - if param isn't of the good type for the
requested function or if commonFunctionKey isn't the key of a
commomon function of Syntax.