com.inductiveautomation.xopc.driver.api.browsing

Class DataVariableNode

java.lang.Object

com.inductiveautomation.xopc.driver.api.browsing.AbstractBrowseNode

com.inductiveautomation.xopc.driver.api.browsing.DataVariableNode

All Implemented Interfaces:

BrowseNode, VariableNode, java.io.Serializable

Direct Known Subclasses:

Property

public class DataVariableNode
extends AbstractBrowseNode
implements VariableNode, java.io.Serializable

A DataVariableNode is the workhorse of the address space. It maps to an OPC-UA node of NodeClass Variable with a TypeDefinition of BaseDataVariableType. This node contains a vaule of scalar or array datatype. A DataVariableNode can contain other DataVariableNodes and Properties.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	arrayLength
protected DataType	dataType
protected DataValue	value

Constructor Summary

Constructors

Constructor and Description
DataVariableNode(java.lang.String address, DataValue value, DataType type) Creates a new DataVariableNode.
DataVariableNode(java.lang.String address, java.lang.String name, DataValue value, DataType type) Creates a new DataVariableNode.
DataVariableNode(java.lang.String address, java.lang.String browseName, java.lang.String displayName, java.lang.String description, DataValue value, DataType type) Creates a new DataVariableNode.
DataVariableNode(java.lang.String address, java.lang.String browseName, java.lang.String displayName, java.lang.String description, DataValue value, DataType type, int arrayLength) Creates a new DataVariableNode.

Method Summary

Modifier and Type	Method and Description
void	addChild(BrowseNode child)
int	getArrayLength() The array length for this node, or -1 to indicate a scalar datatype
BrowseNodeType	getBrowseNodeType() The browse type for this node.
DataType	getDataType() The datatype of this node's value
DataValue	getValue() The current value for this node

Methods inherited from class com.inductiveautomation.xopc.driver.api.browsing.AbstractBrowseNode

addProperty, getAddress, getBrowseName, getChildren, getDescription, getDisplayName, getProperties, getUANode, setUANode

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.inductiveautomation.xopc.driver.api.browsing.BrowseNode

getAddress, getBrowseName, getChildren, getDescription, getDisplayName, getProperties, getUANode, setUANode

Field Detail

value

protected DataValue value

dataType

protected DataType dataType

arrayLength

protected int arrayLength

Constructor Detail

DataVariableNode

public DataVariableNode(java.lang.String address,
                        DataValue value,
                        DataType type)

Creates a new DataVariableNode. The address will be used as the address, browse name and display name. The description will be blank. The variable will have a scalar datatype.

Parameters:

address - The address of this variable.

value - The current value for this variable.

type - The datatype of this variable.

DataVariableNode

public DataVariableNode(java.lang.String address,
                        java.lang.String name,
                        DataValue value,
                        DataType type)

Creates a new DataVariableNode. The description will be blank. The variable will have a scalar datatype.

Parameters:

address - The address of this variable.

name - This name will be used as the browse name and the display name

value - The current value for this variable.

type - The datatype of this variable.

DataVariableNode

public DataVariableNode(java.lang.String address,
                        java.lang.String browseName,
                        java.lang.String displayName,
                        java.lang.String description,
                        DataValue value,
                        DataType type)

Creates a new DataVariableNode. The variable will have a scalar datatype.

Parameters:

address - The address of this variable.

browseName - The browse name for this variable.

displayName - The human-friendly display name for this variable

description - A description for this variable

value - The current value for this variable.

type - The datatype of this variable.

DataVariableNode

public DataVariableNode(java.lang.String address,
                        java.lang.String browseName,
                        java.lang.String displayName,
                        java.lang.String description,
                        DataValue value,
                        DataType type,
                        int arrayLength)

Creates a new DataVariableNode. The variable will have a scalar datatype.

Parameters:

address - The address of this variable.

browseName - The browse name for this variable.

displayName - The human-friendly display name for this variable

description - A description for this variable

value - The current value for this variable.

type - The datatype of this variable.

arrayLength - If this variable's value is an array, this is the length of the array. Use -1 for scalar data.

Method Detail

getValue

public DataValue getValue()

Description copied from interface: VariableNode

The current value for this node

Specified by:

getValue in interface VariableNode

getDataType

public DataType getDataType()

Description copied from interface: VariableNode

The datatype of this node's value

Specified by:

getDataType in interface VariableNode

getArrayLength

public int getArrayLength()

Description copied from interface: VariableNode

The array length for this node, or -1 to indicate a scalar datatype

Specified by:

getArrayLength in interface VariableNode

getBrowseNodeType

public BrowseNodeType getBrowseNodeType()

Description copied from interface: BrowseNode

The browse type for this node. If the browseType is Variable or Property, the VariableNode interface must be implemented as well.

Specified by:

getBrowseNodeType in interface BrowseNode

addChild

public void addChild(BrowseNode child)

Overrides:

addChild in class AbstractBrowseNode