org.apache.nifi.json

Class WriteJsonResult

java.lang.Object

org.apache.nifi.serialization.AbstractRecordSetWriter

org.apache.nifi.json.WriteJsonResult

All Implemented Interfaces:

Closeable, AutoCloseable, RecordSetWriter, RecordWriter

public class WriteJsonResult
extends AbstractRecordSetWriter
implements RecordSetWriter

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static interface	WriteJsonResult.GeneratorTask

Field Summary

Fields

Modifier and Type	Field and Description
private org.codehaus.jackson.JsonFactory	factory
private org.codehaus.jackson.JsonGenerator	generator
private Supplier<DateFormat>	LAZY_DATE_FORMAT
private Supplier<DateFormat>	LAZY_TIME_FORMAT
private Supplier<DateFormat>	LAZY_TIMESTAMP_FORMAT
private ComponentLog	logger
private RecordSchema	recordSchema
private SchemaAccessWriter	schemaAccess

Constructor Summary

Constructors

Constructor and Description
WriteJsonResult(ComponentLog logger, RecordSchema recordSchema, SchemaAccessWriter schemaAccess, OutputStream out, boolean prettyPrint, String dateFormat, String timeFormat, String timestampFormat)

Method Summary

Modifier and Type	Method and Description
void	close()
void	flush()
String	getMimeType()
protected void	onBeginRecordSet()
protected Map<String,String>	onFinishRecordSet()
private void	writeArray(Object[] values, String fieldName, org.codehaus.jackson.JsonGenerator generator, DataType elementType)
Map<String,String>	writeRecord(Record record)
private void	writeRecord(Record record, RecordSchema writeSchema, org.codehaus.jackson.JsonGenerator generator, WriteJsonResult.GeneratorTask startTask, WriteJsonResult.GeneratorTask endTask)
private void	writeValue(org.codehaus.jackson.JsonGenerator generator, Object value, String fieldName, DataType dataType, boolean moreCols)

Methods inherited from class org.apache.nifi.serialization.AbstractRecordSetWriter

beginRecordSet, finishRecordSet, getOutputStream, getRecordCount, isActiveRecordSet, write, write

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.nifi.serialization.RecordSetWriter

beginRecordSet, finishRecordSet, write

Methods inherited from interface org.apache.nifi.serialization.RecordWriter

write

Field Detail

logger

private final ComponentLog logger

schemaAccess

private final SchemaAccessWriter schemaAccess

recordSchema

private final RecordSchema recordSchema

factory

private final org.codehaus.jackson.JsonFactory factory

generator

private final org.codehaus.jackson.JsonGenerator generator

LAZY_DATE_FORMAT

private final Supplier<DateFormat> LAZY_DATE_FORMAT

LAZY_TIME_FORMAT

private final Supplier<DateFormat> LAZY_TIME_FORMAT

LAZY_TIMESTAMP_FORMAT

private final Supplier<DateFormat> LAZY_TIMESTAMP_FORMAT

Constructor Detail

WriteJsonResult

public WriteJsonResult(ComponentLog logger,
                       RecordSchema recordSchema,
                       SchemaAccessWriter schemaAccess,
                       OutputStream out,
                       boolean prettyPrint,
                       String dateFormat,
                       String timeFormat,
                       String timestampFormat)
                throws IOException

Throws:

IOException

Method Detail

onBeginRecordSet

protected void onBeginRecordSet()
                         throws IOException

Overrides:

onBeginRecordSet in class AbstractRecordSetWriter

Throws:

IOException

onFinishRecordSet

protected Map<String,String> onFinishRecordSet()
                                        throws IOException

Overrides:

onFinishRecordSet in class AbstractRecordSetWriter

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class AbstractRecordSetWriter

Throws:

IOException

flush

public void flush()
           throws IOException

Specified by:

flush in interface RecordWriter

Overrides:

flush in class AbstractRecordSetWriter

Throws:

IOException

writeRecord

public Map<String,String> writeRecord(Record record)
                               throws IOException

Specified by:

writeRecord in class AbstractRecordSetWriter

Throws:

IOException

writeRecord

private void writeRecord(Record record,
                         RecordSchema writeSchema,
                         org.codehaus.jackson.JsonGenerator generator,
                         WriteJsonResult.GeneratorTask startTask,
                         WriteJsonResult.GeneratorTask endTask)
                  throws org.codehaus.jackson.JsonGenerationException,
                         IOException

Throws:

org.codehaus.jackson.JsonGenerationException

IOException

writeValue

private void writeValue(org.codehaus.jackson.JsonGenerator generator,
                        Object value,
                        String fieldName,
                        DataType dataType,
                        boolean moreCols)
                 throws org.codehaus.jackson.JsonGenerationException,
                        IOException

Throws:

org.codehaus.jackson.JsonGenerationException

IOException

writeArray

private void writeArray(Object[] values,
                        String fieldName,
                        org.codehaus.jackson.JsonGenerator generator,
                        DataType elementType)
                 throws org.codehaus.jackson.JsonGenerationException,
                        IOException

Throws:

org.codehaus.jackson.JsonGenerationException

IOException

getMimeType

public String getMimeType()

Specified by:

getMimeType in interface RecordWriter