org.apache.nifi.processors.standard

Class ExtractRecordSchema

java.lang.Object

org.apache.nifi.components.AbstractConfigurableComponent

org.apache.nifi.processor.AbstractSessionFactoryProcessor

org.apache.nifi.processor.AbstractProcessor

org.apache.nifi.processors.standard.ExtractRecordSchema

All Implemented Interfaces:

ConfigurableComponent, Processor

@SupportsBatching
 @InputRequirement(value=INPUT_REQUIRED)
 @SideEffectFree
 @Tags(value={"record","generic","schema","json","csv","avro","freeform","text","xml"})
 @WritesAttribute(attribute="record.error.message",description="This attribute provides on failure the error message encountered by the Reader.") @WritesAttribute(attribute="avro.schema",description="This attribute provides the schema extracted from the input FlowFile using the provided RecordReader.")
 @CapabilityDescription(value="Extracts the record schema from the FlowFile using the supplied Record Reader and writes it to the `avro.schema` attribute.")
public class ExtractRecordSchema
extends AbstractProcessor

Field Summary

Fields

Modifier and Type	Field and Description
private com.github.benmanes.caffeine.cache.LoadingCache<RecordSchema,String>	avroSchemaTextCache
(package private) static List<PropertyDescriptor>	properties
(package private) static PropertyDescriptor	RECORD_READER
(package private) static Relationship	REL_FAILURE
(package private) static Relationship	REL_SUCCESS
static String	SCHEMA_ATTRIBUTE_NAME
(package private) static PropertyDescriptor	SCHEMA_CACHE_SIZE

Constructor Summary

Constructors

Constructor and Description
ExtractRecordSchema()

Method Summary

Modifier and Type	Method and Description
Set<Relationship>	getRelationships()
protected List<PropertyDescriptor>	getSupportedPropertyDescriptors()
void	onTrigger(ProcessContext context, ProcessSession session)
void	setup(ProcessContext context)

Methods inherited from class org.apache.nifi.processor.AbstractProcessor

onTrigger

Methods inherited from class org.apache.nifi.processor.AbstractSessionFactoryProcessor

getControllerServiceLookup, getIdentifier, getLogger, getNodeTypeProvider, init, initialize, isConfigurationRestored, isScheduled, toString, updateConfiguredRestoredTrue, updateScheduledFalse, updateScheduledTrue

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

customValidate, equals, getPropertyDescriptor, getPropertyDescriptors, getSupportedDynamicPropertyDescriptor, hashCode, onPropertyModified, validate

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.nifi.processor.Processor

isStateful

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

getPropertyDescriptor, getPropertyDescriptors, onPropertyModified, validate

Field Detail

SCHEMA_ATTRIBUTE_NAME

public static final String SCHEMA_ATTRIBUTE_NAME

See Also:

Constant Field Values

RECORD_READER

static final PropertyDescriptor RECORD_READER

SCHEMA_CACHE_SIZE

static final PropertyDescriptor SCHEMA_CACHE_SIZE

REL_SUCCESS

static final Relationship REL_SUCCESS

REL_FAILURE

static final Relationship REL_FAILURE

properties

static final List<PropertyDescriptor> properties

avroSchemaTextCache

private com.github.benmanes.caffeine.cache.LoadingCache<RecordSchema,String> avroSchemaTextCache

Constructor Detail

ExtractRecordSchema

public ExtractRecordSchema()

Method Detail

getSupportedPropertyDescriptors

protected List<PropertyDescriptor> getSupportedPropertyDescriptors()

Overrides:

getSupportedPropertyDescriptors in class AbstractConfigurableComponent

getRelationships

public Set<Relationship> getRelationships()

Specified by:

getRelationships in interface Processor

Overrides:

getRelationships in class AbstractSessionFactoryProcessor

setup

@OnScheduled
public void setup(ProcessContext context)

onTrigger

public void onTrigger(ProcessContext context,
                      ProcessSession session)
               throws ProcessException

Specified by:

onTrigger in class AbstractProcessor

Throws:

ProcessException