org.oreodata.metadata
Class DateField

java.lang.Object
  |
  +--org.oreodata.metadata.Field
        |
        +--org.oreodata.metadata.DateField

All Implemented Interfaces:

FieldDescriptor, java.io.Serializable

public class DateField

extends Field

A descriptor for a field that holds a date or timestamp (probably a misnomer, should be called TimeStampField)

Author:

Jonathan Revusky

See Also:

Serialized Form

Field Summary

Fields inherited from class org.oreodata.metadata.Field

defaultValueString, intern, properties, sqlType

Constructor Summary

DateField()

Method Summary

java.lang.Object	convertToJDBC(java.lang.Object o) Method to support persisting records to a JDBC record set.
java.lang.Object	defaultValue() returns this field's "default value".
java.lang.Object	getCopy(java.lang.Object o) Used when encapsulation requires Record::get() to return a clone of an object.
java.lang.Class	getJavaType() The kind of java object that can live in this record field.
java.lang.Object	getObjectFromString(Record rec, java.lang.String value) method is synchronized because DateFormat is not thread-safe.
protected void	init(org.w3c.dom.Element element)
protected void	processDefaultValue()
java.lang.String	valueToString(java.lang.Object o) synchronized because DateFormat is not synchronized

Methods inherited from class org.oreodata.metadata.Field

checkValidValue, convertFromJDBC, createSAXHandler, getLocalizedName, getName, getProperty, getSQLType, hashCode, intern, isFieldOf, isRequired, isSetExternally, normalize, processNormalization, processProperties, setDefaultValue, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

DateField

public DateField()

Method Detail

init

protected void init(org.w3c.dom.Element element)
             throws org.xml.sax.SAXException

Overrides:

init in class Field

org.xml.sax.SAXException

processDefaultValue

protected void processDefaultValue()
                            throws java.io.IOException

Overrides:

processDefaultValue in class Field

java.io.IOException

getJavaType

public java.lang.Class getJavaType()

Description copied from interface: FieldDescriptor

The kind of java object that can live in this record field.

Specified by:

getJavaType in interface FieldDescriptor

Overrides:

getJavaType in class Field

defaultValue

public java.lang.Object defaultValue()

Description copied from interface: FieldDescriptor

returns this field's "default value". By default, this will be null.

Specified by:

defaultValue in interface FieldDescriptor

Overrides:

defaultValue in class Field

getObjectFromString

public java.lang.Object getObjectFromString(Record rec,
                                            java.lang.String value)
                                     throws MangledDataException

method is synchronized because DateFormat is not thread-safe.

MangledDataException

getCopy

public java.lang.Object getCopy(java.lang.Object o)

Description copied from interface: FieldDescriptor

Used when encapsulation requires Record::get() to return a clone of an object. In the case of immutable objects such as java.lang.String, getCopy() can just return the object passed in as a parameter.

Specified by:

getCopy in interface FieldDescriptor

Overrides:

getCopy in class Field

Returns:

a copy of the object in question.

valueToString

public java.lang.String valueToString(java.lang.Object o)

synchronized because DateFormat is not synchronized

Specified by:

valueToString in interface FieldDescriptor

Overrides:

valueToString in class Field

convertToJDBC

public java.lang.Object convertToJDBC(java.lang.Object o)

Description copied from interface: FieldDescriptor

Method to support persisting records to a JDBC record set. Takes the result returned by this method and passes it to PreparedStatement.setObject(). In many cases, for strings and numbers, we should get away with this just being a pass-through.

Specified by:

convertToJDBC in interface FieldDescriptor

Overrides:

convertToJDBC in class Field