org.apache.derby.catalog.types
Class DefaultInfoImpl

java.lang.Object
  org.apache.derby.catalog.types.DefaultInfoImpl

All Implemented Interfaces:

DefaultInfo, java.io.Externalizable, Formatable, java.io.Serializable, TypedFormat

public class DefaultInfoImpl

extends java.lang.Object

implements DefaultInfo, Formatable

See Also:

Serialized Form

Field Summary

private java.lang.String	defaultText
private DataValueDescriptor	defaultValue This class implements Formatable.
private ProviderInfo[]	providerInfo

Constructor Summary

DefaultInfoImpl()
Public niladic constructor.

DefaultInfoImpl(java.lang.String defaultText, DataValueDescriptor defaultValue)
Constructor for use with numeric types

Method Summary

java.lang.String	getDefaultText() Get the text of a default.
DataValueDescriptor	getDefaultValue() Get the default value.
ProviderInfo[]	getProviderInfo() Get the ProviderInfo.
int	getTypeFormatId() Get the formatID which corresponds to this class.
void	readExternal(java.io.ObjectInput in) Read this object from a stream of stored objects.
void	setDefaultValue(DataValueDescriptor defaultValue) Set the default value.
void	setProviderInfo(ProviderInfo[] providerInfo) Set the ProviderInfo.
java.lang.String	toString()
void	writeExternal(java.io.ObjectOutput out) Write this object to a stream of stored objects.

Methods inherited from class java.lang.Object

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

Field Detail

defaultValue

private DataValueDescriptor defaultValue

This class implements Formatable. That means that it can write itself to and from a formatted stream. If you add more fields to this class, make sure that you also write/read them with the writeExternal()/readExternal() methods. If, inbetween releases, you add more fields to this class, then you should bump the version number emitted by the getTypeFormatId() method.

defaultText

private java.lang.String defaultText

providerInfo

private ProviderInfo[] providerInfo

Constructor Detail

DefaultInfoImpl

public DefaultInfoImpl()

Public niladic constructor. Needed for Formatable interface to work.

DefaultInfoImpl

public DefaultInfoImpl(java.lang.String defaultText,
                       DataValueDescriptor defaultValue)

Constructor for use with numeric types

Parameters:

defaultText - The text of the default.

Method Detail

getDefaultText

public java.lang.String getDefaultText()

Description copied from interface: DefaultInfo

Get the text of a default.

Specified by:

getDefaultText in interface DefaultInfo

Returns:

The text of the default.

See Also:

DefaultInfo.getDefaultText()

toString

public java.lang.String toString()

readExternal

public void readExternal(java.io.ObjectInput in)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException

Read this object from a stream of stored objects.

Specified by:

readExternal in interface java.io.Externalizable

Parameters:

in - read this.

Throws:

java.io.IOException - thrown on error

java.lang.ClassNotFoundException - thrown on error

writeExternal

public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException

Write this object to a stream of stored objects.

Specified by:

writeExternal in interface java.io.Externalizable

Parameters:

out - write bytes here.

Throws:

java.io.IOException - thrown on error

getTypeFormatId

public int getTypeFormatId()

Get the formatID which corresponds to this class.

Specified by:

getTypeFormatId in interface TypedFormat

Returns:

the formatID of this class

getDefaultValue

public DataValueDescriptor getDefaultValue()

Get the default value. (NOTE: This returns null if the default is not a constant.)

Returns:

The default value.

setDefaultValue

public void setDefaultValue(DataValueDescriptor defaultValue)

Set the default value.

Parameters:

defaultValue - The default value.

Returns:

Nothing.

setProviderInfo

public void setProviderInfo(ProviderInfo[] providerInfo)

Set the ProviderInfo. (Providers that default is dependent on.)

Parameters:

providerInfo - Providers that default is dependent on.

Returns:

Nothing.

getProviderInfo

public ProviderInfo[] getProviderInfo()

Get the ProviderInfo. (Providers that default is dependent on.)

Returns:

Providers that default is dependent on.