org.camunda.bpm.engine.impl.variable.serializer
Interface TypedValueSerializer<T extends TypedValue>

All Known Implementing Classes:

AbstractObjectValueSerializer, AbstractSerializableValueSerializer, AbstractTypedValueSerializer, BooleanValueSerializer, ByteArrayValueSerializer, DateValueSerializer, DoubleValueSerializer, IntegerValueSerializer, JavaObjectSerializer, JPAVariableSerializer, LongValueSerlializer, NullValueSerializer, PrimitiveValueSerializer, ShortValueSerializer, StringValueSerializer

public interface TypedValueSerializer<T extends TypedValue>

A TypedValueSerializer persists TypedValues of a given ValueType to provided ValueFields.

Replaces the "VariableType" interface in previous versions.

Since:

7.2

Author:

Daniel Meyer

Method Summary

boolean	canHandle(TypedValue value) Used for auto-detecting the value type of a variable.
T	convertToTypedValue(UntypedValueImpl untypedValue) Returns a typed value for the provided untyped value.
String	getName() The name of this serializer.
String	getSerializationDataformat()
ValueType	getType() The VariableType supported
boolean	isMutableValue(T typedValue)
T	readValue(ValueFields valueFields, boolean deserializeValue) Retrieve a TypedValue from the provided ValueFields.
void	writeValue(T value, ValueFields valueFields) Serialize a TypedValue to the ValueFields.

Method Detail

getName

String getName()

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

Returns:

the name of this serializer.

getType

ValueType getType()

The VariableType supported

Returns:

the VariableType supported

writeValue

void writeValue(T value,
                ValueFields valueFields)

Serialize a TypedValue to the ValueFields.

Parameters:

value - the TypedValue to persist

valueFields - the ValueFields to which the value should be persisted

readValue

T readValue(ValueFields valueFields,
            boolean deserializeValue)

Retrieve a TypedValue from the provided ValueFields.

Parameters:

valueFields - the ValueFields to retrieve the value from

deserializeValue - indicates whether a SerializableValue should be deserialized.

Returns:

the TypedValue

canHandle

boolean canHandle(TypedValue value)

Used for auto-detecting the value type of a variable. An implementation must return true if it is able to write values of the provided type.

Parameters:

value - the value

Returns:

true if this TypedValueSerializer is able to handle the provided value

convertToTypedValue

T convertToTypedValue(UntypedValueImpl untypedValue)

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 canHandle(TypedValue)).

Parameters:

untypedValue - the untyped value

Returns:

the corresponding typed value

getSerializationDataformat

String getSerializationDataformat()

Returns:

the dataformat used by the serializer or null if this is not an object serializer

isMutableValue

boolean isMutableValue(T typedValue)

Returns:

whether values serialized by this serializer can be mutable and should be re-serialized if changed