Package org.vast.swe.fast

Class JsonDataWriterGson

java.lang.Object

org.vast.swe.fast.DataBlockProcessor

org.vast.swe.fast.AbstractDataWriter

org.vast.swe.fast.JsonDataWriterGson

All Implemented Interfaces:

DataComponentVisitor, DataStreamWriter

Direct Known Subclasses:

JsonArrayDataWriterGson

public class JsonDataWriterGson
extends AbstractDataWriter

New implementation of JSON data writer with better efficiency since the write tree is pre-computed during init instead of being re-evaluated while iterating through the component tree.

This particular implementation is based on Gson JsonWriter.

Since:

Jan 26, 2021

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	JsonDataWriterGson.ArrayWriter
protected class	JsonDataWriterGson.BooleanWriter
protected class	JsonDataWriterGson.ChoiceWriter
protected class	JsonDataWriterGson.DoubleWriter
protected class	JsonDataWriterGson.FloatWriter
protected class	JsonDataWriterGson.GeometryWriter
protected class	JsonDataWriterGson.IntegerWriter
protected class	JsonDataWriterGson.IsoDateTimeWriter
protected static interface	JsonDataWriterGson.JsonAtomWriter
protected class	JsonDataWriterGson.RangeWriter
protected class	JsonDataWriterGson.RecordWriter
protected class	JsonDataWriterGson.RoundingDecimalWriter
protected class	JsonDataWriterGson.StringWriter
protected class	JsonDataWriterGson.ValueWriter

Nested classes/interfaces inherited from class org.vast.swe.fast.DataBlockProcessor

DataBlockProcessor.ArrayProcessor, DataBlockProcessor.ArraySizeSupplier, DataBlockProcessor.AtomProcessor, DataBlockProcessor.BaseProcessor, DataBlockProcessor.ChoiceProcessor, DataBlockProcessor.CompositeProcessor, DataBlockProcessor.ImplicitSizeProcessor, DataBlockProcessor.RecordProcessor

Field Summary

Fields

Modifier and Type	Field	Description
protected Map<String,JsonDataWriterGson.IntegerWriter>	countWriters
protected boolean	wrapWithJsonArray
protected com.google.gson.stream.JsonWriter	writer

Fields inherited from class org.vast.swe.fast.AbstractDataWriter

dataEncoding, lastArrayElt, parentArray

Fields inherited from class org.vast.swe.fast.DataBlockProcessor

dataComponents, enableSubTree, filter, hasVarSizeArray, processorStack, processorTreeReady, rootProcessor

Constructor Summary

Constructors

Constructor	Description
JsonDataWriterGson()
JsonDataWriterGson(com.google.gson.stream.JsonWriter writer)

Method Summary

Modifier and Type	Method	Description
void	close()
void	endStream()
void	flush()
protected DataBlockProcessor.ArrayProcessor	getArrayProcessor(DataArray array)
protected DataBlockProcessor.ArraySizeSupplier	getArraySizeSupplier(String refId)
protected DataBlockProcessor.ChoiceProcessor	getChoiceProcessor(DataChoice choice)
protected DataBlockProcessor.ImplicitSizeProcessor	getImplicitSizeProcessor(DataArray array)
protected DataBlockProcessor.AtomProcessor	getRangeProcessor(RangeComponent range)
protected DataBlockProcessor.RecordProcessor	getRecordProcessor(DataRecord record)
protected DataBlockProcessor.RecordProcessor	getVectorProcessor(Vector vect)
protected void	init()
void	reset()
void	setOutput(OutputStream os)
void	startStream(boolean addWrapper)
void	visit(Boolean comp)
void	visit(Category comp)
void	visit(Count comp)
void	visit(GeometryData geom)
void	visit(Quantity comp)
void	visit(Text comp)
void	visit(Time comp)
protected void	writeInline(boolean writeInline)

Methods inherited from class org.vast.swe.fast.AbstractDataWriter

getDataEncoding, getDataHandler, getErrorHandler, getRawDataHandler, setDataEncoding, setDataHandler, setErrorHandler, setParentArray, setRawDataHandler, stop, write, write

Methods inherited from class org.vast.swe.fast.DataBlockProcessor

addToProcessorTree, checkEnabled, getDataComponents, setDataComponentFilter, setDataComponents, setEnabled, visit, visit, visit, visit, visit, visit, visit, visit, visitRange

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.vast.cdm.common.DataStreamWriter

getDataComponents, setDataComponents

Field Details

writer

protected com.google.gson.stream.JsonWriter writer

countWriters

protected Map<String,JsonDataWriterGson.IntegerWriter> countWriters

wrapWithJsonArray

protected boolean wrapWithJsonArray

Constructor Details

JsonDataWriterGson

public JsonDataWriterGson()

JsonDataWriterGson

public JsonDataWriterGson(com.google.gson.stream.JsonWriter writer)

Method Details

init

protected void init()

Specified by:

init in class DataBlockProcessor

setOutput

public void setOutput(OutputStream os)

writeInline

protected void writeInline(boolean writeInline)

startStream

public void startStream(boolean addWrapper)
                 throws IOException

Specified by:

startStream in interface DataStreamWriter

Overrides:

startStream in class AbstractDataWriter

Throws:

IOException

endStream

public void endStream()
               throws IOException

Specified by:

endStream in interface DataStreamWriter

Overrides:

endStream in class AbstractDataWriter

Throws:

IOException

flush

public void flush()
           throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Throws:

IOException

reset

public void reset()

Specified by:

reset in interface DataStreamWriter

Overrides:

reset in class AbstractDataWriter

visit

public void visit(Boolean comp)

visit

public void visit(Count comp)

visit

public void visit(Quantity comp)

visit

public void visit(Time comp)

visit

public void visit(Category comp)

visit

public void visit(Text comp)

visit

public void visit(GeometryData geom)

Specified by:

visit in interface DataComponentVisitor

Overrides:

visit in class DataBlockProcessor

getRangeProcessor

protected DataBlockProcessor.AtomProcessor getRangeProcessor(RangeComponent range)

Overrides:

getRangeProcessor in class DataBlockProcessor

getRecordProcessor

protected DataBlockProcessor.RecordProcessor getRecordProcessor(DataRecord record)

Overrides:

getRecordProcessor in class DataBlockProcessor

getVectorProcessor

protected DataBlockProcessor.RecordProcessor getVectorProcessor(Vector vect)

Overrides:

getVectorProcessor in class DataBlockProcessor

getChoiceProcessor

protected DataBlockProcessor.ChoiceProcessor getChoiceProcessor(DataChoice choice)

Specified by:

getChoiceProcessor in class DataBlockProcessor

getArrayProcessor

protected DataBlockProcessor.ArrayProcessor getArrayProcessor(DataArray array)

Overrides:

getArrayProcessor in class DataBlockProcessor

getImplicitSizeProcessor

protected DataBlockProcessor.ImplicitSizeProcessor getImplicitSizeProcessor(DataArray array)

Specified by:

getImplicitSizeProcessor in class DataBlockProcessor

getArraySizeSupplier

protected DataBlockProcessor.ArraySizeSupplier getArraySizeSupplier(String refId)

Specified by:

getArraySizeSupplier in class DataBlockProcessor