Inheritance diagram for com.vertica.sdk.NullTypeCoercion:

Collaboration diagram for com.vertica.sdk.NullTypeCoercion:

Public Member Functions
	NullTypeCoercion ()

ByteBuffer	asBinaryBytes (Object value, int length, VerticaType type)

Boolean	asBoolean (Object value, VerticaType type)

ByteBuffer	asCharBytes (Object value, int length, VerticaType type)

java.sql.Date	asDate (Object value, VerticaType type)

Double	asDouble (Object value, VerticaType type)

Long	asLong (Object value, VerticaType type)

java.sql.Timestamp	asTimestamp (Object value, VerticaType type)

Iterator< Object >	getListIterator (Object value)

Iterator< Map.Entry< String, Object > >	getMapIterator (Object value)

MetaType	getMetaType (Object value)

Set< TypeCoercionPolicy >	getPolicy ()

void	setPolicy (Collection< TypeCoercionPolicy > policy)

Protected Member Functions
Collection< TypeCoercionPolicy >	getDefaultPolicy ()

void	unsupportedType (Object value, VerticaType type)

Detailed Description

An implementation of TypeCoercion that always returns null. By default, it has an empty policy, causing all attempts to return null without raising any exceptions under any circumstances.

If FAIL_UNSUPPORTED_TYPE is added to the policy, all coercions will raise exceptions.

This is a good choice for a superclass for users implementing their own type coercion and not interesting in using any standard type coercion. In that case, use of FAIL_UNSUPPORTED_TYPE is recommended to identify gaps in support. For a more functional starting point, see NoopTypeCoercion.

Constructor & Destructor Documentation

◆ NullTypeCoercion()

com.vertica.sdk.NullTypeCoercion.NullTypeCoercion ( )

Constructor. Initializes this TypeCoercion with an empty policy.

See also: getDefaultPolicy()

Member Function Documentation

◆ asBinaryBytes()

ByteBuffer com.vertica.sdk.NullTypeCoercion.asBinaryBytes	(	Object	value,
		int	length,
		VerticaType	type
	)

Not supported; returns null or raises TypeCoercionException.

Implements com.vertica.sdk.TypeCoercion.

◆ asBoolean()

Boolean com.vertica.sdk.NullTypeCoercion.asBoolean	(	Object	value,
		VerticaType	type
	)

Not supported; returns null or raises TypeCoercionException.

Implements com.vertica.sdk.TypeCoercion.

◆ asCharBytes()

ByteBuffer com.vertica.sdk.NullTypeCoercion.asCharBytes	(	Object	value,
		int	length,
		VerticaType	type
	)

Not supported; returns null or raises TypeCoercionException.

Implements com.vertica.sdk.TypeCoercion.

◆ asDate()

java.sql.Date com.vertica.sdk.NullTypeCoercion.asDate	(	Object	value,
		VerticaType	type
	)

Not supported; returns null or raises TypeCoercionException.

Implements com.vertica.sdk.TypeCoercion.

◆ asDouble()

Double com.vertica.sdk.NullTypeCoercion.asDouble	(	Object	value,
		VerticaType	type
	)

Not supported; returns null or raises TypeCoercionException.

Implements com.vertica.sdk.TypeCoercion.

◆ asLong()

Long com.vertica.sdk.NullTypeCoercion.asLong	(	Object	value,
		VerticaType	type
	)

Not supported; returns null or raises TypeCoercionException.

Implements com.vertica.sdk.TypeCoercion.

◆ asTimestamp()

java.sql.Timestamp com.vertica.sdk.NullTypeCoercion.asTimestamp	(	Object	value,
		VerticaType	type
	)

Not supported; returns null or raises TypeCoercionException.

Implements com.vertica.sdk.TypeCoercion.

◆ getDefaultPolicy()

Collection<TypeCoercionPolicy> com.vertica.sdk.NullTypeCoercion.getDefaultPolicy ( )

protected

Provides the default policy installed by the constructor.

For NullTypeCoercion, this policy is empty.

Returns: A new collection of the default policy for this instance of TypeCoercion.

See also: getPolicy(); #setPolicy(Collection)

Referenced by com.vertica.sdk.NullTypeCoercion.NullTypeCoercion().

◆ getListIterator()

Iterator<Object> com.vertica.sdk.NullTypeCoercion.getListIterator ( Object value )

Not implemented on NullTypeCoercion. Throws UnsupportedOperationException.

Implements com.vertica.sdk.TypeCoercion.

◆ getMapIterator()

Iterator<Map.Entry<String,Object> > com.vertica.sdk.NullTypeCoercion.getMapIterator ( Object value )

Not implemented on NullTypeCoercion. Throws UnsupportedOperationException.

Implements com.vertica.sdk.TypeCoercion.

◆ getMetaType()

MetaType com.vertica.sdk.NullTypeCoercion.getMetaType ( Object value )

Always returns SCALAR since this TypeCoercion doesn't know how to convert anything to LIST or MAP types.

Implements com.vertica.sdk.TypeCoercion.

◆ getPolicy()

Set<TypeCoercionPolicy> com.vertica.sdk.NullTypeCoercion.getPolicy ( )

Returns an unmodifiable version of the policy.

Returns: The policy collection.

See also: setPolicy

Implements com.vertica.sdk.TypeCoercion.

Referenced by com.vertica.sdk.NoopTypeCoercion.asBinaryBytes(), com.vertica.sdk.NoopTypeCoercion.asCharBytes(), com.vertica.sdk.StandardTypeCoercion.asCharBytes(), com.vertica.sdk.NoopTypeCoercion.invalidInputType(), com.vertica.sdk.StandardTypeCoercion.invalidInputValue(), com.vertica.sdk.NullTypeCoercion.unsupportedType(), and com.vertica.sdk.NoopTypeCoercion.valueTooLarge().

◆ setPolicy()

void com.vertica.sdk.NullTypeCoercion.setPolicy ( Collection< TypeCoercionPolicy > policy )

Sets the policies for this TypeCoercion instance. Policies generally dictate which scenarios generate exceptions and allow for different error handling choices without implementing a new TypeCoercion class.

Parameters

policy The policy collection