info.informatica.data.field
Class DataType

java.lang.Object
  info.informatica.data.field.DataType

Direct Known Subclasses:

BinaryField, DateField, DoubleField, FloatField, IntegerField, LongField, OperationMark, ShortField, StringField

public abstract class DataType
extends Object

Data type information.

Version:

1.03

Author:

amengual at informatica dot info

Field Summary

static String

DEFAULT_TYPE

Method Summary

static DataType	create(String entity_class) Creates an empty DataField object with name name and class entity_class.
static DataType	createAs(Object data)
static int	dataType(Object data) Gives the java.sql.Types type associated by default to a given Java class.
boolean	equals(Object obj)
static String	getDefaultClassName(int type) Gets the appropriate default DataField subclass for the given java.sql.Types int type.
info.informatica.text.ObjectFormat	getFormat() Get the field format.
static int	getIntType(String tipo) Maps the given data type name to its java.sql.Types index.
int	getJavaSQLType() Get the java.sql.Types type of this entity.
String	getName()
int	getSize() Get the field size.
static String	getTypeName(int tipo) Gets the name of the given java.sql.Types int type.
int	hashCode()
abstract Object	objectValue(FieldName varname, String valor) Transforms a String value into the appropriate Java object, parsing as needed.
Object	sample() Provide a sample of this data type.
void	setFormat(info.informatica.text.ObjectFormat format) Sets the format.
void	setJavaSQLType(int type)
void	setSize(int i) Sets the field size for this data entity
String	toString() Gets the description of the data entity.
Object	validate(FieldName name, Object value) validates the value according to requirements of the Data Dictionary / Metadata.
Object	validate(FieldName name, Object value, Object helper) validates the value according to requirements of the Data Dictionary / Metadata, and using a helper object.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

DEFAULT_TYPE

public static final String DEFAULT_TYPE

See Also:

Constant Field Values

Method Detail

toString

public String toString()

Gets the description of the data entity.

Overrides:

toString in class Object

Returns:

the description of the data entity

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

setJavaSQLType

public void setJavaSQLType(int type)

setSize

public void setSize(int i)
             throws DataException

Sets the field size for this data entity

Parameters:

i - the field size.

Throws:

DataException

setFormat

public void setFormat(info.informatica.text.ObjectFormat format)

Sets the format.

Parameters:

format - the format of this entity.

getFormat

public info.informatica.text.ObjectFormat getFormat()

Get the field format.

Returns:

the format.

getJavaSQLType

public int getJavaSQLType()

Get the java.sql.Types type of this entity.

Returns:

the java.sql.Types type of this entity.

getSize

public int getSize()

Get the field size.

Returns:

the field size.

create

public static DataType create(String entity_class)
                       throws DataFieldException

Creates an empty DataField object with name name and class entity_class.

Parameters:

entity_class - the class of the required entity.

Returns:

the requested entity object. Cannot return null.

Throws:

DataFieldException

validate

public Object validate(FieldName name,
                       Object value)
                throws DataException

validates the value according to requirements of the Data Dictionary / Metadata.

Parameters:

value - the value to be verified.

Throws:

DataException - TODO

validate

public Object validate(FieldName name,
                       Object value,
                       Object helper)
                throws DataException

validates the value according to requirements of the Data Dictionary / Metadata, and using a helper object.

This method typically performs a heavier validation of the value, even when the helper object is null.

Parameters:

value - the value to be verified.

helper - the helper object.

Throws:

DataException - TODO

sample

public Object sample()

Provide a sample of this data type. Should be reasonably random.

Returns:

the sample, or null if no suitable sample could be produced.

objectValue

public abstract Object objectValue(FieldName varname,
                                   String valor)
                            throws DataFieldException

Transforms a String value into the appropriate Java object, parsing as needed.

Parameters:

valor - the value to be parsed/transformed.

Throws:

DataFieldException

createAs

public static DataType createAs(Object data)

dataType

public static int dataType(Object data)

Gives the java.sql.Types type associated by default to a given Java class.

Parameters:

data - the Java object.

Returns:

the java.sql.Types type associated to the given object.

getTypeName

public static String getTypeName(int tipo)

Gets the name of the given java.sql.Types int type.

Returns:

the String representing the SQL data type, or null if unknown.

getIntType

public static int getIntType(String tipo)

Maps the given data type name to its java.sql.Types index.

Parameters:

tipo - a String containing the non-qualified data type name

Returns:

an integer with the java.sql.Types type for the requested type name

getDefaultClassName

public static String getDefaultClassName(int type)

Gets the appropriate default DataField subclass for the given java.sql.Types int type.

getName

public String getName()