public interface ChannelAccessSimpleOnlyEnum extends ChannelAccessEnum, ChannelAccessSimpleOnlyValue<Short>
Channel Access value that represents the
DBR_ENUM type. In its internal
representation, an enum is just an unsigned short integer. However, it is
interpreted as a discrete state.
Due to technical limitations of the Java platform, the enum states are represented by signed integers. The Channel Access protocol, however, defines them as unsigned. Therefore, positive numbers in the Channel Access protocol might appear as negative numbers in this library and vice-versa.
This interface should not be implemented by user-defined classes. Code that
wants to create an instance implementing this interface should use the
methods provided by ChannelAccessValueFactory instead.
| Modifier and Type | Method and Description |
|---|---|
ChannelAccessSimpleOnlyEnum |
asReadOnlyValue()
Returns a read-only version of this value.
|
ChannelAccessSimpleOnlyEnum |
clone()
Creates and returns a copy of this object.
|
getValue, setValueequals, getGenericValueElement, getType, getValueSize, hashCode, isReadOnly, iterator, toStringChannelAccessSimpleOnlyEnum asReadOnlyValue()
Returns a read-only version of this value. If the value is read-only, this value is returned. Otherwise, a wrapped version of this value, that does not allow modifications is returned.
Please note that the read-only value is not a copy of this value, but just a wrapper around it. This means, that modifications of the wrapped value will result in modifications of the read-only value. Therefore it is bad practice to modify a value that has been used as the base for a read-only value, because code that still has a reference to the read-only value might not expect this change and thus fail unexpectedly.
asReadOnlyValue in interface ChannelAccessEnumasReadOnlyValue in interface ChannelAccessGettableValue<Short>asReadOnlyValue in interface ChannelAccessPuttableValue<Short>asReadOnlyValue in interface ChannelAccessSimpleOnlyValue<Short>asReadOnlyValue in interface ChannelAccessValue<Short>null).ChannelAccessSimpleOnlyEnum clone()
Creates and returns a copy of this object. The object returned is completely independent from this object. This means that modifications to this object will not affect the returned object and vice-versa.
The object returned is guaranteed to be completely identical to this
object, including its type. This means that
x.clone().equals(x) and
x.clone().getClass() == x.getClass() are always
true.
The returned value is guaranteed to allow write access, even if this value is read-only. This means that cloning a read-only value is a good way to get a writable copy.
clone in interface ChannelAccessEnumclone in interface ChannelAccessGettableValue<Short>clone in interface ChannelAccessPuttableValue<Short>clone in interface ChannelAccessSimpleOnlyValue<Short>clone in interface ChannelAccessValue<Short>Copyright © 2014–2016 aquenos GmbH. All rights reserved.