com.davisor.data
Class MetaType

java.lang.Object
  java.text.Format
      com.davisor.data.Type
          com.davisor.data.MetaType

All Implemented Interfaces:

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

public class MetaType

extends Type

MetaType describes a multi-dimensional data array that contains data streams. Depending on the dimension of the data array, the data streams within may contain yet other data streams. The MetaType dimension attribute tells how deep this recursion is expected to be. An optional index attribute tells the data array index within it's parent array, if any.

Since:

JDK1.1

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class java.text.Format

java.text.Format.Field

Field Summary

static java.lang.String

TYPENAME Type name ("META").

Fields inherited from class com.davisor.data.Type

METADATA_GROUP, METADATA_NAME, METADATA_PARENT, METADATA_SUBCHANNELS

Constructor Summary

	MetaType() Default constructor.
	MetaType(MetaType mt) Copy constructor.
	MetaType(java.lang.String dataName, java.lang.String id, java.util.Map metaData, int dimension, java.lang.Integer index) Creates a new meta type.
protected	MetaType(java.lang.String typeName, java.lang.String dataName, java.lang.String id, java.util.Map metaData, int dimension, java.lang.Integer index) Creates a new meta type.

Method Summary

com.davisor.core.Dupable	dup() Makes a deep copy of this object.
java.lang.String	getFormat() Gets the meta type specification string.
int	getSQLCode() Gets the SQL type code, as defined by java.sql.Types.
java.lang.String	getSQLName() Gets the SQL type name.
java.lang.Class	getValueClass() Gets value container class.
void	setFormat(java.lang.String format) Sets the type dimension and index.
DataValue	toData(java.lang.String stringValue, java.text.ParsePosition status) Converts a string to a data value.
DataValue	zero() Gets zero data value for this type.

Methods inherited from class com.davisor.data.Type

ceil, check, check, compare, create, create, create, create, create, dup, equals, floor, format, getCompatibility, getDataName, getId, getID, getMetaData, getMetaData, getSpecs, getSQLName, getTypeName, hashCode, isNull, parseObject, register, register, setDataName, setId, setID, setMetaData, setMetaData, setSpecs, toData, toData, toData, 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

TYPENAME

public static final java.lang.String TYPENAME

Type name ("META").

See Also:

Constant Field Values

Constructor Detail

MetaType

public MetaType()

Default constructor.

MetaType

public MetaType(MetaType mt)

Copy constructor.

MetaType

public MetaType(java.lang.String dataName,
                java.lang.String id,
                java.util.Map metaData,
                int dimension,
                java.lang.Integer index)

Creates a new meta type.

Parameters:

dataName - data name

id - type identity

metaData - type meta data map (may be null)

dimension - type dimension

index - type index

MetaType

protected MetaType(java.lang.String typeName,
                   java.lang.String dataName,
                   java.lang.String id,
                   java.util.Map metaData,
                   int dimension,
                   java.lang.Integer index)

Creates a new meta type.

Parameters:

typeName - type name

dataName - data name

id - type identity

metaData - type meta data map (may be null)

dimension - type dimension

index - type index

Method Detail

getSQLName

public java.lang.String getSQLName()

Gets the SQL type name.

Overrides:

getSQLName in class Type

Returns:

SQL type name.

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.

Specified by:

getValueClass in class Type

toData

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

Converts a string to a data value.

Meta type does not yet support this operation, and throws always a InvalidDataException.

Specified by:

toData in class Type

Parameters:

stringValue - data string

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:

Type.toData(CallableStatement,int), Type.toData(Object), Type.toData(ResultSet,int)

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

getFormat

public java.lang.String getFormat()

Gets the meta type specification string. If the current configuration is invalid, null is returned.

Overrides:

getFormat in class Type

Returns:

default, null specification string

See Also:

setFormat(java.lang.String)

setFormat

public void setFormat(java.lang.String format)

Sets the type dimension and index. The dimension and index are expected to be represented as two integer values, separated by a space character.

Overrides:

setFormat in class Type

Parameters:

format - type specification string (may be null)

See Also:

getFormat()

zero

public DataValue zero()

Gets zero data value for this type.

Specified by:

zero in class Type

Returns:

a new zero value data object sharing this type

Throws:

java.lang.Error - always since this operation is undefined

See Also:

DataValue.deinterpolate(com.davisor.data.DataValue, com.davisor.data.DataValue), DataValue.interpolate(double, com.davisor.data.DataValue)