org.camunda.bpm.engine.impl.variable.serializer
Class NullValueSerializer

java.lang.Object
  org.camunda.bpm.engine.impl.variable.serializer.AbstractTypedValueSerializer<org.camunda.bpm.engine.variable.impl.value.NullValueImpl>
      org.camunda.bpm.engine.impl.variable.serializer.NullValueSerializer

All Implemented Interfaces:

TypedValueSerializer<org.camunda.bpm.engine.variable.impl.value.NullValueImpl>

public class NullValueSerializer
extends AbstractTypedValueSerializer<org.camunda.bpm.engine.variable.impl.value.NullValueImpl>

Used to serialize untyped null values.

Author:

Daniel Meyer, Tom Baeyens

Field Summary

Fields inherited from class org.camunda.bpm.engine.impl.variable.serializer.AbstractTypedValueSerializer

BINARY_VALUE_TYPES, valueType

Constructor Summary

NullValueSerializer()

Method Summary

protected boolean	canWriteValue(org.camunda.bpm.engine.variable.value.TypedValue value)
org.camunda.bpm.engine.variable.impl.value.NullValueImpl	convertToTypedValue(org.camunda.bpm.engine.variable.impl.value.UntypedValueImpl untypedValue) Returns a typed value for the provided untyped value.
String	getName() The name of this serializer.
org.camunda.bpm.engine.variable.impl.value.NullValueImpl	readValue(ValueFields valueFields, boolean deserialize) Retrieve a TypedValue from the provided ValueFields.
void	writeValue(org.camunda.bpm.engine.variable.impl.value.NullValueImpl value, ValueFields valueFields) Serialize a TypedValue to the ValueFields.

Methods inherited from class org.camunda.bpm.engine.impl.variable.serializer.AbstractTypedValueSerializer

canHandle, getSerializationDataformat, getType, isMutableValue

Methods inherited from class java.lang.Object

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

Constructor Detail

NullValueSerializer

public NullValueSerializer()

Method Detail

getName

public String getName()

Description copied from interface: TypedValueSerializer

The name of this serializer. The name is used when persisting the ValueFields populated by this serializer.

Returns:

the name of this serializer.

convertToTypedValue

public org.camunda.bpm.engine.variable.impl.value.NullValueImpl convertToTypedValue(org.camunda.bpm.engine.variable.impl.value.UntypedValueImpl untypedValue)

Description copied from interface: TypedValueSerializer

Returns a typed value for the provided untyped value. This is used on cases where the user sets an untyped value which is then detected to be handled by this TypedValueSerializer (by invocation of TypedValueSerializer.canHandle(TypedValue)).

Parameters:

untypedValue - the untyped value

Returns:

the corresponding typed value

writeValue

public void writeValue(org.camunda.bpm.engine.variable.impl.value.NullValueImpl value,
                       ValueFields valueFields)

Description copied from interface: TypedValueSerializer

Serialize a TypedValue to the ValueFields.

Parameters:

value - the TypedValue to persist

valueFields - the ValueFields to which the value should be persisted

readValue

public org.camunda.bpm.engine.variable.impl.value.NullValueImpl readValue(ValueFields valueFields,
                                                                          boolean deserialize)

Description copied from interface: TypedValueSerializer

Retrieve a TypedValue from the provided ValueFields.

Parameters:

valueFields - the ValueFields to retrieve the value from

deserialize - indicates whether a SerializableValue should be deserialized.

Returns:

the TypedValue

canWriteValue

protected boolean canWriteValue(org.camunda.bpm.engine.variable.value.TypedValue value)

Specified by:

canWriteValue in class AbstractTypedValueSerializer<org.camunda.bpm.engine.variable.impl.value.NullValueImpl>