org.axiondb.types
Class FloatType

java.lang.Object
  org.axiondb.types.BaseDataType
      org.axiondb.types.BaseNumberDataType
          org.axiondb.types.FloatType

All Implemented Interfaces:

Serializable, Comparator, DataType, DataTypeFactory

public class FloatType
extends BaseNumberDataType

A DataType representing an float value.

Version:

$Revision: 1.7 $ $Date: 2003/07/22 23:54:37 $

See Also:

Serialized Form

Constructor Summary

FloatType()

Method Summary

int	compare(Object a, Object b)
Object	convert(Object value) Returns a Float converted from the given value, or throws IllegalArgumentException if the given value isn't acceptable.
protected Comparator	getComparator() This base implementation simply returns a ComparableComparator.
int	getJdbcType() Returns the JDBC type codemost closely matching this type.
int	getPrecision() Value returned by ResultSetMetaData#getPrecisionfor this data type.
String	getPreferredValueClassName() Returns the "normal" type returned by DataType.convert(java.lang.Object).
int	getScale() Value returned by ResultSetMetaData#getScalefor this data type.
DataType	makeNewInstance()
Object	read(DataInput in) Instantiate an object of my type from the given DataInput.
boolean	supportsSuccessor() false
String	toString() Returns "float"
void	write(Object value, DataOutput out) Write an object of my type to the given DataOutput.

Methods inherited from class org.axiondb.types.BaseNumberDataType

accepts, toNumber

Methods inherited from class org.axiondb.types.BaseDataType

getColumnDisplaySize, getLiteralPrefix, getLiteralSuffix, getNullableCode, getSearchableCode, isCaseSensitive, isCurrency, isUnsigned, successor, toBigDecimal, toBigInteger, toBlob, toBoolean, toByte, toByteArray, toClob, toDate, toDouble, toFloat, toInt, toLong, toShort, toString, toTime, toTimestamp, toURL

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Comparator

equals

Constructor Detail

FloatType

public FloatType()

Method Detail

getJdbcType

public int getJdbcType()

Description copied from interface: DataType

Returns the JDBC type codemost closely matching this type.

Specified by:

getJdbcType in interface DataType

Specified by:

getJdbcType in class BaseDataType

getPreferredValueClassName

public String getPreferredValueClassName()

Description copied from interface: DataType

Returns the "normal" type returned by DataType.convert(java.lang.Object). Returns java.lang.Object if unknown.

Specified by:

getPreferredValueClassName in interface DataType

Overrides:

getPreferredValueClassName in class BaseDataType

See Also:

AxionResultSetMetaData.getColumnClassName(int)

getPrecision

public int getPrecision()

Description copied from interface: DataType

Value returned by ResultSetMetaData#getPrecisionfor this data type.

Specified by:

getPrecision in interface DataType

Overrides:

getPrecision in class BaseDataType

See Also:

ResultSetMetaData.getPrecision(int)

getScale

public int getScale()

Description copied from interface: DataType

Value returned by ResultSetMetaData#getScalefor this data type.

Specified by:

getScale in interface DataType

Overrides:

getScale in class BaseDataType

See Also:

ResultSetMetaData.getScale(int)

toString

public String toString()

Returns "float"

Overrides:

toString in class Object

Returns:

"float"

convert

public Object convert(Object value)
               throws IllegalArgumentException

Returns a Float converted from the given value, or throws IllegalArgumentException if the given value isn't acceptable.

Specified by:

convert in interface DataType

Overrides:

convert in class BaseNumberDataType

Throws:

IllegalArgumentException

read

public Object read(DataInput in)
            throws IOException

Description copied from interface: DataType

Instantiate an object of my type from the given DataInput. The next sequence of bytes to be read from the DataInput will have been written by DataType.write(java.lang.Object, java.io.DataOutput).

Specified by:

read in interface DataType

Specified by:

read in class BaseDataType

Throws:

IOException

See Also:

write(java.lang.Object, java.io.DataOutput)

supportsSuccessor

public boolean supportsSuccessor()

false

Specified by:

supportsSuccessor in interface DataType

Overrides:

supportsSuccessor in class BaseNumberDataType

write

public void write(Object value,
                  DataOutput out)
           throws IOException

Description copied from interface: DataType

Write an object of my type to the given DataOutput.

Specified by:

write in interface DataType

Specified by:

write in class BaseDataType

Parameters:

value - the value to write, which must be acceptableto this DataType

Throws:

IOException

makeNewInstance

public DataType makeNewInstance()

Specified by:

makeNewInstance in interface DataTypeFactory

Specified by:

makeNewInstance in class BaseDataType

compare

public int compare(Object a,
                   Object b)

Specified by:

compare in interface Comparator

Overrides:

compare in class BaseDataType

getComparator

protected Comparator getComparator()

Description copied from class: BaseDataType

This base implementation simply returns a ComparableComparator.

Overrides:

getComparator in class BaseDataType