org.eclipse.milo.opcua.sdk.server.nodes.filters

Interface AttributeFilter

All Known Implementing Classes:

DefaultAttributeFilter

public interface AttributeFilter

Field Summary

Fields

Modifier and Type	Field and Description
static DefaultAttributeFilter	DEFAULT_INSTANCE A shared instance of DefaultAttributeFilter.

Method Summary

Modifier and Type	Method and Description
default @Nullable Object	getAttribute(AttributeFilterContext.GetAttributeContext ctx, AttributeId attributeId) Get the value for the attribute identified by attributeId or delegate to the next filter in the chain.
default void	setAttribute(AttributeFilterContext.SetAttributeContext ctx, AttributeId attributeId, @Nullable Object value) Set the value for the attribute identified by attributeId or delegate to the next filter in the chain.

Field Detail

DEFAULT_INSTANCE

static final DefaultAttributeFilter DEFAULT_INSTANCE

A shared instance of DefaultAttributeFilter.

Method Detail

getAttribute

@Nullable
default @Nullable Object getAttribute(AttributeFilterContext.GetAttributeContext ctx,
                                                AttributeId attributeId)

Get the value for the attribute identified by attributeId or delegate to the next filter in the chain.

Parameters:

ctx - the AttributeFilterContext.

attributeId - the AttributeId of the attribute to get the value of.

Returns:

the value for the attribute identified by attributeId.

See Also:

AttributeFilterContext.GetAttributeContext.getAttribute(AttributeId)

setAttribute

default void setAttribute(AttributeFilterContext.SetAttributeContext ctx,
                          AttributeId attributeId,
                          @Nullable
                          @Nullable Object value)

Set the value for the attribute identified by attributeId or delegate to the next filter in the chain.

Parameters:

ctx - the AttributeFilterContext.

attributeId - the AttributeId of the attribute to set the value of.

value - the value to set.

See Also:

AttributeFilterContext.SetAttributeContext.setAttribute(AttributeId, Object)