org.apache.nifi.registry

Class MultiMapVariableRegistry

java.lang.Object

org.apache.nifi.registry.MultiMapVariableRegistry

All Implemented Interfaces:

VariableRegistry

Direct Known Subclasses:

FileVariableRegistry

public class MultiMapVariableRegistry
extends Object
implements VariableRegistry

This implementation of variable registry uses the MultiMap which stores one or more registries that can be searched, accessed and appended. NOTE: Duplicate values within or between added registries will be stored however on retrieval the first value encountered will be returned.

Field Summary

Fields

Modifier and Type	Field and Description
protected MultiMap<String>	registry

Constructor Summary

Constructors

Constructor and Description
MultiMapVariableRegistry()
MultiMapVariableRegistry(Map<String,String>... maps)

Method Summary

Modifier and Type	Method and Description
void	addRegistry(VariableRegistry variableRegistry) Concatenate a variable registry
(package private) void	addVariables(Map<String,String> map)
Set<String>	getVariableNames() Returns a set variable names in the registry
Map<String,String>	getVariables() Returns a map of key/value pairs stored in the registry
String	getVariableValue(String variable) Return a value for a given variable

Methods inherited from class java.lang.Object

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

Field Detail

registry

protected final MultiMap<String> registry

Constructor Detail

MultiMapVariableRegistry

MultiMapVariableRegistry()

MultiMapVariableRegistry

@SafeVarargs
MultiMapVariableRegistry(Map<String,String>... maps)

Method Detail

addVariables

void addVariables(Map<String,String> map)

addRegistry

public void addRegistry(VariableRegistry variableRegistry)

Description copied from interface: VariableRegistry

Concatenate a variable registry

Specified by:

addRegistry in interface VariableRegistry

Parameters:

variableRegistry - variableRegistry

getVariables

public Map<String,String> getVariables()

Description copied from interface: VariableRegistry

Returns a map of key/value pairs stored in the registry

Specified by:

getVariables in interface VariableRegistry

Returns:

variables

getVariableValue

public String getVariableValue(String variable)

Description copied from interface: VariableRegistry

Return a value for a given variable

Specified by:

getVariableValue in interface VariableRegistry

Parameters:

variable - variable

Returns:

value

getVariableNames

public Set<String> getVariableNames()

Description copied from interface: VariableRegistry

Returns a set variable names in the registry

Specified by:

getVariableNames in interface VariableRegistry

Returns:

variableNames