public interface VariableRegistry
Modifier and Type | Field and Description |
---|---|
static VariableRegistry |
EMPTY_REGISTRY
Returns an empty registry which can be used as a more intentional null
value.
|
static VariableRegistry |
ENVIRONMENT_SYSTEM_REGISTRY
Provides a registry containing all environment variables and system
properties.
|
Modifier and Type | Method and Description |
---|---|
default VariableDescriptor |
getVariableKey(String name)
Returns the VariableDescriptor for the given key name if it exists.
|
Map<VariableDescriptor,String> |
getVariableMap()
Provides access to a map of variable key/value pairs.
|
default String |
getVariableValue(String name)
Gets the variable value
|
default String |
getVariableValue(VariableDescriptor descriptor)
Gets the variable value
|
static final VariableRegistry EMPTY_REGISTRY
static final VariableRegistry ENVIRONMENT_SYSTEM_REGISTRY
Map<VariableDescriptor,String> getVariableMap()
default VariableDescriptor getVariableKey(String name)
name
- the string name of the VariableDescriptor to lookup.default String getVariableValue(String name)
name
- the string name of the VariableDescriptor that is the key of
the value to lookup.default String getVariableValue(VariableDescriptor descriptor)
descriptor
- the descriptor for which to lookup the variable value.Copyright © 2022 Apache NiFi Project. All rights reserved.