com.davisor.data
Class FloatData

java.lang.Object
  java.lang.Number
      com.davisor.data.SimpleNumberValue
          com.davisor.data.FloatData

All Implemented Interfaces:

java.lang.Comparable, Data, DataValue, com.davisor.core.Dupable, NumberValue, java.io.Serializable, SerializableData

Direct Known Subclasses:

EnumData

public class FloatData

extends SimpleNumberValue

FloatData represents float valued number data. The data value inside may also be null. This indicates that the number value of this object is undetermined.

Since:

JDK1.1

See Also:

FloatType, Serialized Form

Field Summary

Fields inherited from class com.davisor.data.SimpleNumberValue

M_type, M_value

Constructor Summary

FloatData()
Creates a new float number data object with the default type and value (0.0)

FloatData(float value)
Create a new float number data object with the default type and given value.

FloatData(FloatData data)
Shallow copy constructor.

FloatData(FloatData data, boolean deep)
Deep or shallow copy constructor.

FloatData(FloatType type, java.lang.String stringValue, java.text.ParsePosition status)
Creates a float data value from a string value.

FloatData(java.lang.Number value)
Creates a new float number data object with the default type and given value.

FloatData(NumberType type)
Create a new float number data object with the given float type and default value (0.0).

FloatData(NumberType type, float value)
Create a new float number data object with the given type and value.

FloatData(NumberType type, java.lang.Number value)
Create a new float number data object with the given type and value.

Method Summary

DataValue	abs() Returns absolute data value of current value.
com.davisor.core.Dupable	dup() Makes a deep copy of this object.
java.lang.String	getFormat() Gets the type specification optimal for this particular value.
DataValue	negate() Returns the negation of current value.
void	setValue(double value) Sets the data float value.
void	setValue(float value) Sets the data float value.
void	setValue(long value) Sets the data long value.
void	setValue(java.lang.Number value) Sets data Number value.
void	setValue(java.lang.String stringValue, java.text.ParsePosition status) Sets data value from a string value.
void	toStatement(java.sql.PreparedStatement statement, int parameter) Converts data to a prepared statement input parameter.

Methods inherited from class com.davisor.data.SimpleNumberValue

add, byteValue, ceil, compareTo, deinterpolate, div, doubleValue, equals, floatValue, floor, getFormat, getType, hashCode, interpolate, intValue, isNull, longValue, max, min, mul, numberValue, setValue, setValue, setValue, shortValue, sub, toString, toXML, unit

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

FloatData

public FloatData()

Creates a new float number data object with the default type and value (0.0)

See Also:

FloatData(NumberType,float)

FloatData

public FloatData(FloatData data)

Shallow copy constructor.

Parameters:

data - source data (may be null)

See Also:

SimpleNumberValue.SimpleNumberValue(SimpleNumberValue,boolean)

FloatData

public FloatData(FloatData data,
                 boolean deep)

Deep or shallow copy constructor. If it is shallow, then the new object shares an underlying type with the original object. If it is deep, then the type is dupped.

Parameters:

data - source data (may be null)

deep - determines if the copying is deep or shallow

See Also:

SimpleNumberValue.SimpleNumberValue(SimpleNumberValue,boolean)

FloatData

public FloatData(java.lang.Number value)

Creates a new float number data object with the default type and given value.

Parameters:

value - data value (may be null)

See Also:

SimpleNumberValue.SimpleNumberValue(NumberType,Number)

FloatData

public FloatData(float value)

Create a new float number data object with the default type and given value.

Parameters:

value - data value

See Also:

FloatData(NumberType,float)

FloatData

public FloatData(NumberType type)

Create a new float number data object with the given float type and default value (0.0).

Parameters:

type - the type of data (may be null)

See Also:

FloatData(NumberType,float)

FloatData

public FloatData(NumberType type,
                 java.lang.Number value)

Create a new float number data object with the given type and value.

Parameters:

type - the type of data (may be null)

value - data value (may be null)

See Also:

SimpleNumberValue.SimpleNumberValue(NumberType,Number)

FloatData

public FloatData(NumberType type,
                 float value)

Create a new float number data object with the given type and value.

Parameters:

type - the type of data (may be null)

value - data value

See Also:

SimpleNumberValue.SimpleNumberValue(NumberType,Number)

FloatData

public FloatData(FloatType type,
                 java.lang.String stringValue,
                 java.text.ParsePosition status)
          throws InvalidDataException

Creates a float data value from a string value.

Parameters:

type - the type of data (may be null)

stringValue - string value to be parsed (may be null)

status - parse status (may be null)

Throws:

InvalidDataException - if string value could not be parser

See Also:

setValue(String,ParsePosition)

Method Detail

abs

public DataValue abs()
              throws InvalidDataException

Returns absolute data value of current value.

Absolute values must satisfy a requirement that when added to any other value, the result must be greater than or equal to the original value.

Specified by:

abs in interface DataValue

Specified by:

abs in class SimpleNumberValue

Returns:

a new data object, sharing the current type of this object

Throws:

InvalidDataException - if absolute value can not be computed

getFormat

public java.lang.String getFormat()

Gets the type specification optimal for this particular value. The specification returned may differ from the current type specification. If so, setting the current type specification equal to the value returned by this method will ensure optimal value formatting and parsing for values of the same magnitude as this value.

The float data optimal specificaton string describes a format that has a minimum number of decimals, but at least one.

Specified by:

getFormat in interface DataValue

Overrides:

getFormat in class SimpleNumberValue

See Also:

Data.getType(), FormatType.getFormat(), FormatType.setFormat(java.util.Locale, java.lang.String)

negate

public DataValue negate()
                 throws InvalidDataException

Returns the negation of current value.

Specified by:

negate in interface DataValue

Specified by:

negate in class SimpleNumberValue

Returns:

a new data object, sharing the current type of this object

Throws:

InvalidDataException - if absolute value can not be computed

setValue

public void setValue(java.lang.String stringValue,
                     java.text.ParsePosition status)
              throws InvalidDataException

Sets data value from a string value.

Parameters:

stringValue - string value to be parsed (may be null)

status - parse status (may be null)

Throws:

InvalidDataException - if string value could not be parser

See Also:

SimpleNumberType.floatValue(String,ParsePosition)

toStatement

public void toStatement(java.sql.PreparedStatement statement,
                        int parameter)
                 throws java.sql.SQLException

Converts data to a prepared statement input parameter.

Throws:

java.sql.SQLException - if a SQL error occurs.

dup

public com.davisor.core.Dupable dup()

Makes a deep copy of this object.

setValue

public void setValue(float value)
              throws InvalidDataException

Sets the data float value.

Specified by:

setValue in interface NumberValue

Overrides:

setValue in class SimpleNumberValue

Throws:

InvalidDataException - never

setValue

public void setValue(double value)
              throws InvalidDataException

Sets the data float value.

Specified by:

setValue in interface NumberValue

Specified by:

setValue in class SimpleNumberValue

Throws:

InvalidDataException - if the value cannot be converted to a float value

setValue

public void setValue(long value)
              throws InvalidDataException

Sets the data long value.

Specified by:

setValue in interface NumberValue

Specified by:

setValue in class SimpleNumberValue

Throws:

InvalidDataException - never

setValue

public void setValue(java.lang.Number value)
              throws InvalidDataException

Sets data Number value.

Specified by:

setValue in interface NumberValue

Specified by:

setValue in class SimpleNumberValue

Throws:

InvalidDataException - never