CalculatorExpr.Value

java.lang.Object
- org.vishia.util.CalculatorExpr.Value

Enclosing class:

CalculatorExpr
```
public static class CalculatorExpr.Value
extends java.lang.Object
```
A value, maybe a constant, any given Object or an access description to a java program element.

Field Summary

Fields
Modifier and Type	Field and Description
`private boolean`	`boolVal`
`private double`	`doubleVal`
`(package private) CalculatorExpr.ExpressionType`	`etype` The expression type to check the second operand.
`private float`	`floatVal`
`private int`	`intVal`
`private long`	`longVal`
`private java.lang.Object`	`oVal`
`private java.lang.CharSequence`	`stringVal`
`protected char`	`type_` Type of the value.

Constructor Summary

Constructors
Constructor and Description
`Value()`
`Value(java.lang.Appendable val)`
`Value(boolean val)`
`Value(char val)`
`Value(double val)`
`Value(float val)`
`Value(int val)`
`Value(long val)`
`Value(java.lang.Object val)`
`Value(java.lang.String val)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`booleanValue()` Returns a boolean value.
`void`	`copy(CalculatorExpr.Value src)` Copy all content from src to this.
`double`	`doubleValue()`
`float`	`floatValue()`
`int`	`intValue()`
`boolean`	`isObjValue()` Returns true if the value stores an Object value.
`long`	`longValue()`
`java.lang.Object`	`objValue()` Converts the Value to the adequate Object representation, especially for the wrapped primitive types.
`java.lang.CharSequence`	`stringValue()` Returns the reference to the StringBuilder-buffer if the result is a concatenation of strings.
`java.lang.String`	`stringxValue()`
`void`	`toNumValue()` Converts the content of the variable to a numeric one.
`java.lang.String`	`toString()`
`char`	`type()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - type_
```
protected char type_
```
    Type of the value.
    - J I D F Z: long, int, double, float, boolean, the known Java characters for types see Class.getName()
    - C: Character value stored in the intValue.
    - o: The oVal contains any object.
    - t: A character sequence stored in stringVal,
    - a: An Appendable,
    - e: Contains an exception for not found datapath. The exception is ignored if the value is converted to a boolean value, then the boolean value is false.
    - ?: The value is empty, not defined.
  - etype
```
CalculatorExpr.ExpressionType etype
```
    The expression type to check the second operand. The type() is identically with CalculatorExpr.ExpressionType.typeChar(). It need not checked outside of the internally functionality of the outer class CalculatorExpr.
  - longVal
```
private long longVal
```
  - intVal
```
private int intVal
```
  - doubleVal
```
private double doubleVal
```
  - floatVal
```
private float floatVal
```
  - boolVal
```
private boolean boolVal
```
  - stringVal
```
private java.lang.CharSequence stringVal
```
  - oVal
```
private java.lang.Object oVal
```
- Constructor Detail
  - Value
```
public Value(long val)
```
  - Value
```
public Value(int val)
```
  - Value
```
public Value(double val)
```
  - Value
```
public Value(float val)
```
  - Value
```
public Value(boolean val)
```
  - Value
```
public Value(char val)
```
  - Value
```
public Value(java.lang.String val)
```
  - Value
```
public Value(java.lang.Appendable val)
```
  - Value
```
public Value(java.lang.Object val)
```
  - Value
```
public Value()
```
- Method Detail
  - type
```
public char type()
```
  - copy
```
public void copy(CalculatorExpr.Value src)
```
    Copy all content from src to this.
    
    Parameters:
    
    src -
  - booleanValue
```
public boolean booleanValue()
```
    Returns a boolean value. If the type of content is a numeric, false is returned if the value is ==0. If the type is a text, false is returned if the string is empty. If the type is any other Object, false is returned if the object referenz is ==null.
    
    Returns:
    
    The boolean value.
  - intValue
```
public int intValue()
```
  - longValue
```
public long longValue()
```
  - doubleValue
```
public double doubleValue()
```
  - floatValue
```
public float floatValue()
```
  - stringValue
```
public java.lang.CharSequence stringValue()
```
    Returns the reference to the StringBuilder-buffer if the result is a concatenation of strings. The StringBuilder-buffer can be changed after them in any public application, because the Value is only returned on end of calculation. Returns a reference to String in all other cases.
    
    Returns:
  - objValue
```
public java.lang.Object objValue()
```
    Converts the Value to the adequate Object representation, especially for the wrapped primitive types. If the value contains an int, char, long, double, float, boolean, it is converted to the wrapped presentation of that. If the value contains an text, represented by a reference to CharSequence, this instance is returned. It may be a String or a StringBuilder. If the value contains a reference to an object because the expression consists of only one argument, a CalculatorExpr.Operation.datapath() of an DataAccess, this Object is returned.
    
    Returns:
    
    an Object which presents the value.
  - isObjValue
```
public boolean isObjValue()
```
    Returns true if the value stores an Object value. Especially if the expression does contain only from a single dataAccess, the value is an Object value.
    
    Returns:
    
    false on stringValue or such. Tests type_ == 'o'.
  - stringxValue
```
public java.lang.String stringxValue()
```
  - toNumValue
```
public void toNumValue()
```
    Converts the content of the variable to a numeric one. Detects hex with "0x", Integer, Long, Float, Double. The decimal separator should be a '.'. Spaces are ignored, can be separators between digits. A separator ' or , is possible too.
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object

Class CalculatorExpr.Value

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

type_

etype

longVal

intVal

doubleVal

floatVal

boolVal

stringVal

oVal

Constructor Detail

Value

Value

Value

Value

Value

Value

Value

Value

Value

Value

Method Detail

type

copy

booleanValue

intValue

longValue

doubleValue

floatValue

stringValue

objValue

isObjValue

stringxValue

toNumValue

toString