public abstract class ContextAttributes extends Object
Note that the way mutability is implemented differs between kinds of attributes, to account for thread-safety: per-call attributes are handled assuming that instances are never shared, whereas changes to per-reader/per-writer attributes are made assuming sharing, by creating new copies instead of modifying state. This allows sharing of default values without per-call copying, but requires two-level lookup on access.
| Modifier and Type | Class and Description |
|---|---|
static class |
ContextAttributes.Impl |
| Constructor and Description |
|---|
ContextAttributes() |
| Modifier and Type | Method and Description |
|---|---|
abstract Object |
getAttribute(Object key)
Accessor for value of specified attribute
|
static ContextAttributes |
getEmpty() |
abstract ContextAttributes |
withoutSharedAttribute(Object key) |
abstract ContextAttributes |
withPerCallAttribute(Object key,
Object value)
Mutator used during call (via context) to set value of "non-shared"
part of attribute set.
|
abstract ContextAttributes |
withSharedAttribute(Object key,
Object value) |
abstract ContextAttributes |
withSharedAttributes(Map<?,?> attributes) |
public static ContextAttributes getEmpty()
public abstract ContextAttributes withSharedAttribute(Object key, Object value)
public abstract ContextAttributes withSharedAttributes(Map<?,?> attributes)
public abstract ContextAttributes withoutSharedAttribute(Object key)
public abstract Object getAttribute(Object key)
public abstract ContextAttributes withPerCallAttribute(Object key, Object value)
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