DataType

This class contains meta data information about data types, and can convert between Java objects and Values.

Methods
static int	convertSQLTypeToValueType(int sqlType, String sqlTypeName) Convert a SQL type to a value type using SQL type name, in order to manage SQL type extension mechanism.
static int	convertSQLTypeToValueType(int sqlType, String sqlTypeName) Convert a SQL type to a value type using SQL type name, in order to manage SQL type extension mechanism. Parameters: sqlType - the SQL type sqlTypeName - the SQL type name Returns: the value type
static int	convertSQLTypeToValueType(int sqlType) Convert a SQL type to a value type.
static int	convertSQLTypeToValueType(int sqlType) Convert a SQL type to a value type. Parameters: sqlType - the SQL type Returns: the value type
static Object	convertTo(JdbcConnection conn, Value v, Class paramClass) Convert a value to the specified class.
static Object	convertTo(JdbcConnection conn, Value v, Class paramClass) Convert a value to the specified class. Parameters: conn - the database connection v - the value paramClass - the target class Returns: the converted object
static Value	convertToValue(SessionInterface session, Object x, int type) Convert a Java object to a value.
static Value	convertToValue(SessionInterface session, Object x, int type) Convert a Java object to a value. Parameters: session - the session x - the value type - the value type Returns: the value
static int	convertTypeToSQLType(int type) Convert a value type to a SQL type.
static int	convertTypeToSQLType(int type) Convert a value type to a SQL type. Parameters: type - the value type Returns: the SQL type
static int	getAddProofType(int type) Get the data type that will not overflow when calling 'add' 2 billion times.
static int	getAddProofType(int type) Get the data type that will not overflow when calling 'add' 2 billion times. Parameters: type - the value type Returns: the data type that supports adding
static DataType	getDataType(int type) Get the data type object for the given value type.
static DataType	getDataType(int type) Get the data type object for the given value type. Parameters: type - the value type Returns: the data type object
static Object	getDefaultForPrimitiveType(Class clazz) Get the default value in the form of a Java object for the given Java class.
static Object	getDefaultForPrimitiveType(Class clazz) Get the default value in the form of a Java object for the given Java class. Parameters: clazz - the Java class Returns: the default object
static DataType	getTypeByName(String s, Mode mode) Get a data type object from a type name.
static DataType	getTypeByName(String s, Mode mode) Get a data type object from a type name. Parameters: s - the type name mode - database mode Returns: the data type object
static String	getTypeClassName(int type) Get the name of the Java class for the given value type.
static String	getTypeClassName(int type) Get the name of the Java class for the given value type. Parameters: type - the value type Returns: the class name
static int	getTypeFromClass(Class x) Get the value type for the given Java class.
static int	getTypeFromClass(Class x) Get the value type for the given Java class. Parameters: x - the Java class Returns: the value type
static ArrayList	getTypes() Get the list of data types.
static ArrayList	getTypes() Get the list of data types. Returns: the list
static int	getValueTypeFromResultSet(ResultSetMetaData meta, int columnIndex) Get the SQL type from the result set meta data for the given column.
static int	getValueTypeFromResultSet(ResultSetMetaData meta, int columnIndex) throws SQLException Get the SQL type from the result set meta data for the given column. This method uses the SQL type and type name. Parameters: meta - the meta data columnIndex - the column index (1, 2,...) Returns: the value type
static boolean	isGeometry(Object x) Check whether a given object is a Geometry object.
static boolean	isGeometry(Object x) Check whether a given object is a Geometry object. Parameters: x - the the object Returns: true if it is a Geometry object
static boolean	isGeometryClass(Class x) Check whether a given class matches the Geometry class.
static boolean	isGeometryClass(Class x) Check whether a given class matches the Geometry class. Parameters: x - the class Returns: true if it is a Geometry class
static boolean	isLargeObject(int type) Check if the given value type is a large object (BLOB or CLOB).
static boolean	isLargeObject(int type) Check if the given value type is a large object (BLOB or CLOB). Parameters: type - the value type Returns: true if the value type is a lob type
static boolean	isStringType(int type) Check if the given value type is a String (VARCHAR,...).
static boolean	isStringType(int type) Check if the given value type is a String (VARCHAR,...). Parameters: type - the value type Returns: true if the value type is a String type
static Value	readValue(SessionInterface session, ResultSet rs, int columnIndex, int type) Read a value from the given result set.
static Value	readValue(SessionInterface session, ResultSet rs, int columnIndex, int type) Read a value from the given result set. Parameters: session - the session rs - the result set columnIndex - the column index (1 based) type - the data type Returns: the value
static boolean	supportsAdd(int type) Check if the given value type supports the add operation.
static boolean	supportsAdd(int type) Check if the given value type supports the add operation. Parameters: type - the value type Returns: true if add is supported

Fields
static Class	GEOMETRY_CLASS
static int	TYPE_RESULT_SET = -10
static boolean	autoIncrement
static boolean	caseSensitive
static boolean	decimal
static int	defaultDisplaySize
static long	defaultPrecision
static int	defaultScale
static boolean	hidden
static long	maxPrecision
static int	maxScale
static int	memory
static int	minScale
static String	name
static String	params
static String	prefix
static int	sqlType
static int	sqlTypePos
static String	suffix
static boolean	supportsPrecision
static boolean	supportsScale
static int	type

TYPE_RESULT_SET = -10

This constant is used to represent the type of a ResultSet. There is no equivalent java.sql.Types value, but Oracle uses it to represent a ResultSet (OracleTypes.CURSOR = -10).

GEOMETRY_CLASS

The Geometry class. This object is null if the jts jar file is not in the classpath.

autoIncrement

If this is an autoincrement type.

caseSensitive

If this data type is an autoincrement type.

decimal

If this is a numeric type.

defaultDisplaySize

The default display size.

defaultPrecision

The default precision.

defaultScale

The default scale.

hidden

If this data type should not be listed in the database meta data.

maxPrecision

The maximum supported precision.

maxScale

The highest possible scale.

memory

The number of bytes required for an object.

minScale

The lowest possible scale.

name

The data type name.

params

The list of parameters used in the column definition.

prefix

The prefix required for the SQL literal representation.

sqlType

The SQL type.

sqlTypePos

How closely the data type maps to the corresponding JDBC SQL type (low is best).

suffix

The suffix required for the SQL literal representation.

supportsPrecision

If the precision parameter is supported.

supportsScale

If the scale parameter is supported.

type

The value type of this data type.