org.apache.nifi.lookup

Class SimpleKeyValueLookupService

java.lang.Object

org.apache.nifi.components.AbstractConfigurableComponent

org.apache.nifi.controller.AbstractControllerService

org.apache.nifi.lookup.SimpleKeyValueLookupService

All Implemented Interfaces:

ConfigurableComponent, ControllerService, LookupService<String>, StringLookupService

@Tags(value={"lookup","enrich","key","value"})
 @CapabilityDescription(value="Allows users to add key/value pairs as User-defined Properties. Each property that is added can be looked up by Property Name. The coordinates that are passed to the lookup must contain the key \'key\'.")
public class SimpleKeyValueLookupService
extends AbstractControllerService
implements StringLookupService

Field Summary

Fields

Modifier and Type	Field and Description
private static String	KEY
private Map<String,String>	lookupValues
private static Set<String>	REQUIRED_KEYS

Constructor Summary

Constructors

Constructor and Description
SimpleKeyValueLookupService()

Method Summary

Modifier and Type	Method and Description
void	cacheConfiguredValues(ConfigurationContext context)
Set<String>	getRequiredKeys()
protected PropertyDescriptor	getSupportedDynamicPropertyDescriptor(String propertyDescriptorName)
Optional<String>	lookup(Map<String,Object> coordinates)

Methods inherited from class org.apache.nifi.controller.AbstractControllerService

abstractClearConfigContext, abstractStoreConfigContext, disabled, enabled, getConfigurationContext, getControllerServiceLookup, getIdentifier, getLogger, getNodeTypeProvider, getProperty, getStateManager, init, initialize, isEnabled

Methods inherited from class org.apache.nifi.components.AbstractConfigurableComponent

customValidate, equals, getPropertyDescriptor, getPropertyDescriptors, getSupportedPropertyDescriptors, hashCode, onPropertyModified, toString, validate

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.nifi.lookup.StringLookupService

getValueType

Methods inherited from interface org.apache.nifi.lookup.LookupService

lookup

Methods inherited from interface org.apache.nifi.controller.ControllerService

initialize, isStateful

Methods inherited from interface org.apache.nifi.components.ConfigurableComponent

getIdentifier, getPropertyDescriptor, getPropertyDescriptors, onPropertyModified, validate

Field Detail

KEY

private static final String KEY

See Also:

Constant Field Values

REQUIRED_KEYS

private static final Set<String> REQUIRED_KEYS

lookupValues

private volatile Map<String,String> lookupValues

Constructor Detail

SimpleKeyValueLookupService

public SimpleKeyValueLookupService()

Method Detail

getSupportedDynamicPropertyDescriptor

protected PropertyDescriptor getSupportedDynamicPropertyDescriptor(String propertyDescriptorName)

Overrides:

getSupportedDynamicPropertyDescriptor in class AbstractConfigurableComponent

cacheConfiguredValues

@OnEnabled
public void cacheConfiguredValues(ConfigurationContext context)

lookup

public Optional<String> lookup(Map<String,Object> coordinates)

Specified by:

lookup in interface LookupService<String>

getRequiredKeys

public Set<String> getRequiredKeys()

Specified by:

getRequiredKeys in interface LookupService<String>