Package com.exasol.adapter.metadata

Class DataType

java.lang.Object

com.exasol.adapter.metadata.DataType

public class DataType
extends Object

Represents an EXASOL data type.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DataType.ExaCharset
static class	DataType.ExaDataType
static class	DataType.IntervalType

Field Summary

Fields

Modifier and Type	Field	Description
static int	MAX_EXASOL_CHAR_SIZE
static int	MAX_EXASOL_DECIMAL_PRECISION
static int	MAX_EXASOL_VARCHAR_SIZE

Method Summary

Modifier and Type	Method	Description
static DataType	createBool()	Create a BOOL data type
static DataType	createChar(int size, DataType.ExaCharset charset)	Create a CHAR data type with a given size and character set
static DataType	createDate()	Create a DATE data type
static DataType	createDecimal(int precision, int scale)	Create a DECIMAL (i.e.
static DataType	createDouble()	Create a DOUBLE (i.e.
static DataType	createGeometry(int srid)	Create a GEOMETRY data type
static DataType	createHashtype(int byteSize)	Create a HASHTYPE data type
static DataType	createIntervalDaySecond(int precision, int fraction)	Create an INTERVAL DAY TO SECOND data type
static DataType	createIntervalYearMonth(int precision)	Create an INTERVAL YEAR TO MONTH data type
static DataType	createMaximumSizeChar(DataType.ExaCharset charset)	Create a CHAR data type with the maximum size supported by Exasol
static DataType	createMaximumSizeVarChar(DataType.ExaCharset charset)	Create a VARCHAR data type with the maximum size supported by Exasol
static DataType	createTimestamp(boolean withLocalTimezone)	Create a TIMESTAMP data type
static DataType	createUnsupported()	Create an UNSUPPORTED data type
static DataType	createVarChar(int size, DataType.ExaCharset charset)	Create a VARCHAR data type with a given size and character set
boolean	equals(Object o)
int	getByteSize()	Get the size in bytes.
DataType.ExaCharset	getCharset()	Get the character set
DataType.ExaDataType	getExaDataType()	Get the Exasol data type without parameters
int	getGeometrySrid()	Get the Spatial Reference System Identifier (SRID) that was used to encode the geometry
int	getIntervalFraction()	Get the interval fraction
DataType.IntervalType	getIntervalType()	Get the interval type
int	getPrecision()	Get the precision
int	getScale()	Get the scale
int	getSize()	Get the size
int	hashCode()
boolean	isSupported()	Check if the data type is supported.
boolean	isWithLocalTimezone()	Check whether the timestamp uses the local time zone
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

MAX_EXASOL_CHAR_SIZE

public static final int MAX_EXASOL_CHAR_SIZE

See Also:

Constant Field Values

MAX_EXASOL_VARCHAR_SIZE

public static final int MAX_EXASOL_VARCHAR_SIZE

See Also:

Constant Field Values

MAX_EXASOL_DECIMAL_PRECISION

public static final int MAX_EXASOL_DECIMAL_PRECISION

See Also:

Constant Field Values

Method Detail

createVarChar

public static DataType createVarChar(int size,
                                     DataType.ExaCharset charset)

Create a VARCHAR data type with a given size and character set

Parameters:

size - size of the data type in characters

charset - character set to be used when creating the data type

Returns:

VARCHAR type

createMaximumSizeVarChar

public static DataType createMaximumSizeVarChar(DataType.ExaCharset charset)

Create a VARCHAR data type with the maximum size supported by Exasol

Parameters:

charset - character set to be used when creating the data type

Returns:

VARCHAR type

createChar

public static DataType createChar(int size,
                                  DataType.ExaCharset charset)

Create a CHAR data type with a given size and character set

Parameters:

size - size of the data type in characters

charset - character set to be used when creating the data type

Returns:

CHAR type

createMaximumSizeChar

public static DataType createMaximumSizeChar(DataType.ExaCharset charset)

Create a CHAR data type with the maximum size supported by Exasol

Parameters:

charset - character set to be used when creating the data type

Returns:

CHAR type

createDecimal

public static DataType createDecimal(int precision,
                                     int scale)

Create a DECIMAL (i.e. fixed point value) data type

Parameters:

precision - total number of places before and after the point that an instance of this type can hold

scale - number of decimal places behind the point

Returns:

DECIMAL data type

createDouble

public static DataType createDouble()

Create a DOUBLE (i.e. double-precision floating point value) data type

Returns:

DOUBLE data type

createDate

public static DataType createDate()

Create a DATE data type

Returns:

DATE data type

createUnsupported

public static DataType createUnsupported()

Create an UNSUPPORTED data type

Returns:

UNSUPPORTED data type

createTimestamp

public static DataType createTimestamp(boolean withLocalTimezone)

Create a TIMESTAMP data type

Parameters:

withLocalTimezone - defines whether the timestamp is local time (true) or UTC(false)

Returns:

TIMESTAMP data type

createBool

public static DataType createBool()

Create a BOOL data type

Returns:

BOOL data type

createGeometry

public static DataType createGeometry(int srid)

Create a GEOMETRY data type

Parameters:

srid - Spatial Reference System Identifier

Returns:

GEOMETRY data type

See Also:

Spatial Reference System Identifier (Wikipedia)

createIntervalDaySecond

public static DataType createIntervalDaySecond(int precision,
                                               int fraction)

Create an INTERVAL DAY TO SECOND data type

Parameters:

precision - number of days the interval can span

fraction - decimal places after the point

Returns:

INTERVAL DAY TO SECOND data type

See Also:

Interval data type (Exasol documentation)

createIntervalYearMonth

public static DataType createIntervalYearMonth(int precision)

Create an INTERVAL YEAR TO MONTH data type

Parameters:

precision - number of years the interval can span

Returns:

INTERVAL YEAR TO MONTH data type

See Also:

Interval data type (Exasol documentation)

createHashtype

public static DataType createHashtype(int byteSize)

Create a HASHTYPE data type

Parameters:

byteSize - size in bytes

Returns:

HASHTYPE data type

getExaDataType

public DataType.ExaDataType getExaDataType()

Get the Exasol data type without parameters

Returns:

Exasol data type

getPrecision

public int getPrecision()

Get the precision

Returns:

precision

getScale

public int getScale()

Get the scale

Returns:

scale

getSize

public int getSize()

Get the size

Returns:

size

getCharset

public DataType.ExaCharset getCharset()

Get the character set

Returns:

character set

isWithLocalTimezone

public boolean isWithLocalTimezone()

Check whether the timestamp uses the local time zone

Returns:

true if the timestamp uses the local time zone

getGeometrySrid

public int getGeometrySrid()

Get the Spatial Reference System Identifier (SRID) that was used to encode the geometry

Returns:

SRID

See Also:

Spatial Reference System Identifier (Wikipedia)

getIntervalType

public DataType.IntervalType getIntervalType()

Get the interval type

Returns:

interval type

getIntervalFraction

public int getIntervalFraction()

Get the interval fraction

Returns:

interval fraction

getByteSize

public int getByteSize()

Get the size in bytes.

Returns:

byte size

isSupported

public boolean isSupported()

Check if the data type is supported.

Returns:

true if the data type is supported by the Virtual Schema.

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object