org.eclipse.scada.ds

Class DataNode

java.lang.Object

org.eclipse.scada.ds.DataNode

public class DataNode
extends java.lang.Object

A data node used for storing data in a DataStore.

Data nodes are equal by id.

Since:

0.15.0

Constructor Summary

Constructors

Constructor and Description
DataNode(java.lang.String id, byte[] data) Create a new data node and fill with byte buffer
DataNode(java.lang.String id, java.io.InputStream stream) Create a new data node and fill with the input stream
DataNode(java.lang.String id, java.io.Serializable data) Create a new data node and fill it with the serialized representation of the data object provided.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
byte[]	getData() Get a copy of the data
java.lang.Object	getDataAsObject()
java.lang.Object	getDataAsObject(Bundle bundle)
java.lang.Object	getDataAsObject(Bundle bundle, java.lang.Object defaultValue)
java.lang.Object	getDataAsObject(java.lang.ClassLoader classLoader)
protected java.lang.Object	getDataAsObject(java.io.ObjectInputStream stream)
java.lang.String	getId()
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DataNode

public DataNode(java.lang.String id,
        byte[] data)

Create a new data node and fill with byte buffer

The byte buffer is copied by the constructor

Parameters:

id - The node id

data - the data

DataNode

public DataNode(java.lang.String id,
        java.io.InputStream stream)
         throws java.io.IOException

Create a new data node and fill with the input stream

The input stream is read into the data buffer of the node

The stream is not closed by the constructor.

Parameters:

id - the node id

stream - the stream to read from

Throws:

java.io.IOException - if stream reading fails

DataNode

public DataNode(java.lang.String id,
        java.io.Serializable data)

Create a new data node and fill it with the serialized representation of the data object provided.

Parameters:

id - the node id

data - the data to serialize

Method Detail

getId

public java.lang.String getId()

getData

public byte[] getData()

Get a copy of the data

Returns:

the binary node data

getDataAsObject

public java.lang.Object getDataAsObject()
                                 throws java.io.IOException,
                                        java.lang.ClassNotFoundException

Throws:

java.io.IOException

java.lang.ClassNotFoundException

getDataAsObject

protected java.lang.Object getDataAsObject(java.io.ObjectInputStream stream)
                                    throws java.io.IOException,
                                           java.lang.ClassNotFoundException

Throws:

java.io.IOException

java.lang.ClassNotFoundException

getDataAsObject

public java.lang.Object getDataAsObject(java.lang.ClassLoader classLoader)
                                 throws java.io.IOException,
                                        java.lang.ClassNotFoundException

Throws:

java.io.IOException

java.lang.ClassNotFoundException

getDataAsObject

public java.lang.Object getDataAsObject(Bundle bundle)
                                 throws java.io.IOException,
                                        java.lang.ClassNotFoundException

Throws:

java.io.IOException

java.lang.ClassNotFoundException

getDataAsObject

public java.lang.Object getDataAsObject(Bundle bundle,
                               java.lang.Object defaultValue)

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object