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

Class AbstractSerializableValueSerializer<T extends SerializableValue>

java.lang.Object

org.camunda.bpm.engine.impl.variable.serializer.AbstractTypedValueSerializer<T>

org.camunda.bpm.engine.impl.variable.serializer.AbstractSerializableValueSerializer<T>

All Implemented Interfaces:

TypedValueSerializer<T>

Direct Known Subclasses:

AbstractObjectValueSerializer, SpinValueSerializer

public abstract class AbstractSerializableValueSerializer<T extends SerializableValue>
extends AbstractTypedValueSerializer<T>

Author:

Roman Smirnov

Field Summary

Fields

Modifier and Type	Field and Description
protected String	serializationDataFormat

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

BINARY_VALUE_TYPES, valueType

Constructor Summary

Constructors

Constructor and Description
AbstractSerializableValueSerializer(SerializableValueType type, String serializationDataFormat)

Method Summary

Modifier and Type	Method and Description
protected abstract boolean	canSerializeValue(Object value) return true if this serializer is able to serialize the provided object.
protected boolean	canWriteValue(TypedValue typedValue)
protected abstract T	createDeserializedValue(Object deserializedObject, String serializedStringValue, ValueFields valueFields, boolean asTransientValue)
protected abstract T	createSerializedValue(String serializedStringValue, ValueFields valueFields, boolean asTransientValue)
protected abstract Object	deserializeFromByteArray(byte[] object, ValueFields valueFields) Deserialize the object from a byte array.
String	getSerializationDataformat()
protected byte[]	getSerializedBytesValue(String serializedStringValue)
protected String	getSerializedStringValue(byte[] serializedByteValue)
protected abstract boolean	isSerializationTextBased() Return true if the serialization is text based.
protected byte[]	readSerializedValueFromFields(ValueFields valueFields)
T	readValue(ValueFields valueFields, boolean deserializeObjectValue, boolean asTransientValue) Retrieve a TypedValue from the provided ValueFields.
protected abstract byte[]	serializeToByteArray(Object deserializedObject) Implementations must return a byte[] representation of the provided object.
protected abstract void	updateTypedValue(T value, String serializedStringValue)
protected abstract void	writeToValueFields(T value, ValueFields valueFields, byte[] serializedValue)
void	writeValue(T value, ValueFields valueFields) Serialize a TypedValue to the ValueFields.

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

canHandle, getType, isMutableValue

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.camunda.bpm.engine.impl.variable.serializer.TypedValueSerializer

convertToTypedValue, getName

Field Detail

serializationDataFormat

protected String serializationDataFormat

Constructor Detail

AbstractSerializableValueSerializer

public AbstractSerializableValueSerializer(SerializableValueType type,
                                           String serializationDataFormat)

Method Detail

getSerializationDataformat

public String getSerializationDataformat()

Specified by:

getSerializationDataformat in interface TypedValueSerializer<T extends SerializableValue>

Overrides:

getSerializationDataformat in class AbstractTypedValueSerializer<T extends SerializableValue>

Returns:

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

writeValue

public void writeValue(T 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 T readValue(ValueFields valueFields,
                   boolean deserializeObjectValue,
                   boolean asTransientValue)

Description copied from interface: TypedValueSerializer

Retrieve a TypedValue from the provided ValueFields.

Parameters:

valueFields - the ValueFields to retrieve the value from

deserializeObjectValue - indicates whether a SerializableValue should be deserialized.

Returns:

the TypedValue

createDeserializedValue

protected abstract T createDeserializedValue(Object deserializedObject,
                                             String serializedStringValue,
                                             ValueFields valueFields,
                                             boolean asTransientValue)

createSerializedValue

protected abstract T createSerializedValue(String serializedStringValue,
                                           ValueFields valueFields,
                                           boolean asTransientValue)

writeToValueFields

protected abstract void writeToValueFields(T value,
                                           ValueFields valueFields,
                                           byte[] serializedValue)

updateTypedValue

protected abstract void updateTypedValue(T value,
                                         String serializedStringValue)

readSerializedValueFromFields

protected byte[] readSerializedValueFromFields(ValueFields valueFields)

getSerializedStringValue

protected String getSerializedStringValue(byte[] serializedByteValue)

getSerializedBytesValue

protected byte[] getSerializedBytesValue(String serializedStringValue)

canWriteValue

protected boolean canWriteValue(TypedValue typedValue)

Specified by:

canWriteValue in class AbstractTypedValueSerializer<T extends SerializableValue>

canSerializeValue

protected abstract boolean canSerializeValue(Object value)

return true if this serializer is able to serialize the provided object.

Parameters:

value - the object to test (guaranteed to be a non-null value)

Returns:

true if the serializer can handle the object.

serializeToByteArray

protected abstract byte[] serializeToByteArray(Object deserializedObject)
                                        throws Exception

Implementations must return a byte[] representation of the provided object. The object is guaranteed not to be null.

Parameters:

deserializedObject - the object to serialize

Returns:

the byte array value of the object

Throws:

exception - in case the object cannot be serialized

Exception

deserializeFromByteArray

protected abstract Object deserializeFromByteArray(byte[] object,
                                                   ValueFields valueFields)
                                            throws Exception

Deserialize the object from a byte array.

Parameters:

object - the object to deserialize

valueFields - the value fields

Returns:

the deserialized object

Throws:

exception - in case the object cannot be deserialized

Exception

isSerializationTextBased

protected abstract boolean isSerializationTextBased()

Return true if the serialization is text based. Return false otherwise