org.opengis.feature

Class DataType

java.lang.Object

org.opengis.util.CodeList<DataType>

org.opengis.feature.DataType

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<DataType>

public final class DataType
extends CodeList<DataType>

Enumeration class whose static constants give the possible data types for Feature attributes.

Since:

GeoAPI 2.0

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static DataType	DATETIME Constant to be used when the value of an attribute is a date/time.
static DataType	DECIMAL Constant to be used when the value of an attribute is stored as a string containing the decimal representation of a number.
static DataType	DOUBLE Constant to be used when the value of an attribute is stored as a binary floating point value (such as IEEE-754).
static DataType	GEOMETRY Constant to be used when the value of an attribute is a geometry of some kind.
static DataType	INTEGER Constant to be used when the value of an attribute is stored as a binary integer.
static DataType	OBJECT Constant to be used when the value of an attribute is a Java object that represents some complex type.
static DataType	STRING Constant to be used when the value of an attribute is stored as a string of arbitrary characters.
static DataType	STYLE Constant to be used when the value of an attribute is an instance of FeatureStyle.

Method Summary

Modifier and Type	Method and Description
CodeList[]	family() Returns the list of enumerations of the same kind than this enum.
static DataType[]	values() Returns the list of DataTypes.

Methods inherited from class org.opengis.util.CodeList

compareTo, name, ordinal, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

INTEGER

public static final DataType INTEGER

Constant to be used when the value of an attribute is stored as a binary integer. The "size" of such as attribute should be interpreted as the number of bytes used to store the integer. Some systems may require that the size be one of 1, 2, 4, or 8.

DECIMAL

public static final DataType DECIMAL

Constant to be used when the value of an attribute is stored as a string containing the decimal representation of a number. The "size" of such an attribute should be interpreted as the maximum number of digits (including the negative sign and decimal point as digits) in the value. The "precision" should be interpreted as the maximum number of digits after the decimal point.

DOUBLE

public static final DataType DOUBLE

Constant to be used when the value of an attribute is stored as a binary floating point value (such as IEEE-754). The "size" of such an attribute should be interpreted as the number of bytes used to store the number. Some systems may require that the size be either 4 or 8.

STRING

public static final DataType STRING

Constant to be used when the value of an attribute is stored as a string of arbitrary characters. The "size" of such an attribute should be interpreted as the maximum number of characters that can be stored in the given attribute.

DATETIME

public static final DataType DATETIME

Constant to be used when the value of an attribute is a date/time.

OBJECT

public static final DataType OBJECT

Constant to be used when the value of an attribute is a Java object that represents some complex type. Note that some consumers of Feature will likely not be able to deal with complex types and will simply use the Object.toString() method of this object to store the value as a String.

GEOMETRY

public static final DataType GEOMETRY

Constant to be used when the value of an attribute is a geometry of some kind. Such a value must be one of the allowed subclasses of Geometry. See the package documentation for org.opengis.feature for more details on the allowed geometries.

STYLE

public static final DataType STYLE

Constant to be used when the value of an attribute is an instance of FeatureStyle. Such an attribute may be used in the portrayal of the geometry contained by a feature.

Method Detail

values

public static DataType[] values()

Returns the list of DataTypes.

family

public CodeList[] family()

Returns the list of enumerations of the same kind than this enum.

Specified by:

family in class CodeList<DataType>