com.davisor.data
Class DoubleType

java.lang.Object
  java.text.Format
      com.davisor.data.Type
          com.davisor.data.LocaleType
              com.davisor.data.FormatType
                  com.davisor.data.SimpleNumberType
                      com.davisor.data.DoubleType

All Implemented Interfaces:

java.lang.Cloneable, java.util.Comparator, com.davisor.core.Dupable, NumberType, java.io.Serializable

Direct Known Subclasses:

ChoiceType

public class DoubleType

extends SimpleNumberType

DoubleType defines a data type that supports double precision data.

Since:

JDK1.1

See Also:

DoubleData, FloatType, IntegerType, Serialized Form

Nested Class Summary

Nested classes inherited from class java.text.Format

java.text.Format.Field

Field Summary

static DoubleType	DEFAULT Default double type.
static java.lang.String	TYPENAME Type name ("DOUBLE").

Fields inherited from class com.davisor.data.FormatType

M_pattern, M_sample

Fields inherited from class com.davisor.data.LocaleType

DEFAULT_LOCALE, M_locale

Fields inherited from class com.davisor.data.Type

METADATA_GROUP, METADATA_NAME, METADATA_PARENT, METADATA_SUBCHANNELS

Constructor Summary

	DoubleType() Default constructor.
	DoubleType(DoubleType dt) Copy constructor.
	DoubleType(java.lang.String dataName) Creates a new default type with no identity.
	DoubleType(java.lang.String dataName, java.lang.String id, java.util.Map metaData, java.util.Locale locale, java.lang.String pattern, java.lang.Object sample) Creates a new double type.
	DoubleType(java.lang.String dataName, java.lang.String id, java.lang.String format) Creates a new named double number data type with a given decimal format pattern.
protected	DoubleType(java.lang.String typeName, java.lang.String dataName, java.lang.String id, java.util.Map metaData, java.util.Locale locale, java.lang.String pattern, java.lang.Object sample) Creates a new double type.

Method Summary

double	decode(java.lang.String value, java.text.ParsePosition status) Converts a string to a double value.
com.davisor.core.Dupable	dup() Makes a deep copy of this object.
java.lang.String	encode(double value) Converts a double to a string value.
boolean	equals(java.lang.Object o) Tests if this object is equal with another object.
int	getSQLCode() Gets the SQL type code, as defined by java.sql.Types.
java.lang.Class	getValueClass() Gets value container class.
DataValue	toData(java.sql.CallableStatement statement, int column) Converts a callable statement variable to a data value.
DataValue	toData(java.lang.Object objectValue) Converts an object to a data value.
DataValue	toData(java.sql.ResultSet resultSet, int column) Converts a result set column value to a data value.
DataValue	toData(java.lang.String stringValue, java.text.ParsePosition status) Converts a string to a data value.

Methods inherited from class com.davisor.data.SimpleNumberType

byteValue, byteValue, createFormatter, doubleValue, doubleValue, floatValue, floatValue, intValue, intValue, longValue, longValue, numberValue, shortValue, shortValue, stringValue, stringValue, stringValue, stringValue, stringValue, stringValue, stringValue, zero

Methods inherited from class com.davisor.data.FormatType

clearFormatter, getFormat, getFormatter, getPattern, getSample, hashCode, setFormat, setFormat, setLocale, setPattern, setSample

Methods inherited from class com.davisor.data.LocaleType

getLocale, setLocale

Methods inherited from class com.davisor.data.Type

ceil, check, check, compare, create, create, create, create, create, dup, floor, format, getCompatibility, getDataName, getId, getID, getMetaData, getMetaData, getSpecs, getSQLName, getSQLName, getTypeName, isNull, parseObject, register, register, setDataName, setId, setID, setMetaData, setMetaData, setSpecs, toString, toXML, xmlEnd, xmlStart

Methods inherited from class java.text.Format

clone, format, formatToCharacterIterator, parseObject

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT

public static final DoubleType DEFAULT

Default double type.

TYPENAME

public static final java.lang.String TYPENAME

Type name ("DOUBLE").

See Also:

Constant Field Values

Constructor Detail

DoubleType

public DoubleType()

Default constructor.

DoubleType

public DoubleType(DoubleType dt)

Copy constructor.

DoubleType

public DoubleType(java.lang.String dataName)

Creates a new default type with no identity.

Parameters:

dataName - data name (may be null)

DoubleType

public DoubleType(java.lang.String dataName,
                  java.lang.String id,
                  java.lang.String format)

Creates a new named double number data type with a given decimal format pattern.

This is the constructor the SQL type mapper Type.create(Integer,String,String,String) method will call to create a type that matches given SQL type.

Parameters:

dataName - data name (may be null)

id - type identity (may be null)

format - decimal format pattern (may be null)

See Also:

FormatType.setFormat(java.util.Locale, java.lang.String)

DoubleType

public DoubleType(java.lang.String dataName,
                  java.lang.String id,
                  java.util.Map metaData,
                  java.util.Locale locale,
                  java.lang.String pattern,
                  java.lang.Object sample)

Creates a new double type.

Parameters:

dataName - data name (may be null)

id - type identity (may be null)

metaData - type meta data map (may be null)

locale - type locale (may be null)

pattern - format pattern (may be null)

sample - format sample (may be null)

DoubleType

protected DoubleType(java.lang.String typeName,
                     java.lang.String dataName,
                     java.lang.String id,
                     java.util.Map metaData,
                     java.util.Locale locale,
                     java.lang.String pattern,
                     java.lang.Object sample)

Creates a new double type.

Parameters:

typeName - type name

dataName - data name (may be null)

id - type identity (may be null)

metaData - type meta data map (may be null)

locale - type locale (may be null)

pattern - format pattern (may be null)

sample - format sample (may be null)

Method Detail

dup

public com.davisor.core.Dupable dup()

Makes a deep copy of this object.

Specified by:

dup in interface com.davisor.core.Dupable

Specified by:

dup in class Type

equals

public boolean equals(java.lang.Object o)

Tests if this object is equal with another object.

Double types are equal if their super-classes are.

Specified by:

equals in interface java.util.Comparator

Overrides:

equals in class FormatType

See Also:

Compare.equals(Object,Object)

decode

public double decode(java.lang.String value,
                     java.text.ParsePosition status)
              throws InvalidDataException

Converts a string to a double value.

Throws:

InvalidDataException - if the value cannot be converted

See Also:

SimpleNumberType.doubleValue(String,ParsePosition)

encode

public java.lang.String encode(double value)
                        throws InvalidDataException

Converts a double to a string value.

Throws:

InvalidDataException - if the value cannot be converted

See Also:

SimpleNumberType.stringValue(double)

getSQLCode

public int getSQLCode()

Gets the SQL type code, as defined by java.sql.Types.

Overrides:

getSQLCode in class Type

Returns:

Types.VARCHAR.

getValueClass

public java.lang.Class getValueClass()

Gets value container class.

Overrides:

getValueClass in class FormatType

toData

public DataValue toData(java.sql.CallableStatement statement,
                        int column)
                 throws InvalidDataException,
                        java.sql.SQLException

Converts a callable statement variable to a data value.

Gets statement double value, and returns a corresponding DoubleData value.

Overrides:

toData in class Type

Parameters:

statement - statement holding the data value to be converted

column - SQL column index for the data value to be converted

Returns:

a data value object corresponding to given object value

Throws:

InvalidDataException - if given object value could not be parsed

java.sql.SQLException - if a SQL error occurs

See Also:

toData(Object), toData(ResultSet,int), toData(String,ParsePosition), DoubleData

toData

public DataValue toData(java.lang.Object objectValue)
                 throws InvalidDataException

Converts an object to a data value.

Number objects are converted directly, other objects are converted first to strings, then to date values.

Overrides:

toData in class Type

Parameters:

objectValue - data object (may be null)

Returns:

a data value object corresponding to given object value

Throws:

InvalidDataException - if given object value could not be parsed

See Also:

toData(CallableStatement,int), toData(ResultSet,int), toData(String,ParsePosition), DateData

toData

public DataValue toData(java.lang.String stringValue,
                        java.text.ParsePosition status)
                 throws InvalidDataException

Converts a string to a data value.

Double type expects the given value to contain a double value compatible with current number pattern, and returns a corresponding DoubleData value.

Specified by:

toData in class Type

Parameters:

stringValue - data string (may be null)

status - parse status (may be null)

Returns:

a data value object corresponding given string value

Throws:

InvalidDataException - if given string value could not be parsed

See Also:

toData(CallableStatement,int), toData(Object), toData(ResultSet,int), DoubleData

toData

public DataValue toData(java.sql.ResultSet resultSet,
                        int column)
                 throws InvalidDataException,
                        java.sql.SQLException

Converts a result set column value to a data value.

Gets result set column double value, and returns a corresponding DoubleData value.

Overrides:

toData in class Type

Parameters:

resultSet - resultSet holding the data value to be converted

column - SQL column index for the data value to be converted

Returns:

a data value object corresponding to given object value

Throws:

InvalidDataException - if given object value could not be parsed

java.sql.SQLException - if a SQL error occurs

See Also:

toData(CallableStatement,int), toData(Object), toData(String,ParsePosition), DoubleData