Package org.apache.drill.exec.store.easy.json.reader

Class BaseJsonReader

java.lang.Object

org.apache.drill.exec.store.easy.json.reader.BaseJsonProcessor

org.apache.drill.exec.store.easy.json.reader.BaseJsonReader

All Implemented Interfaces:

JsonProcessor

Direct Known Subclasses:

CountingJsonReader, JsonReader

public abstract class BaseJsonReader
extends BaseJsonProcessor

Basic reader implementation for json documents.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.drill.exec.store.easy.json.reader.BaseJsonProcessor

BaseJsonProcessor.JsonExceptionProcessingState

Nested classes/interfaces inherited from interface org.apache.drill.exec.store.easy.json.JsonProcessor

JsonProcessor.ReadState

Field Summary

Fields inherited from class org.apache.drill.exec.store.easy.json.reader.BaseJsonProcessor

currentFieldName, lastSeenJsonToken, parser, workBuf

Constructor Summary

Constructors

Constructor	Description
BaseJsonReader(DrillBuf workBuf, boolean enableNanInf, boolean enableEscapeAnyChar, boolean skipOuterList)

Method Summary

Modifier and Type	Method	Description
protected UserException	createDocumentTopLevelException()
JsonProcessor.ReadState	write(BaseWriter.ComplexWriter writer)
protected abstract void	writeDocument(BaseWriter.ComplexWriter writer, com.fasterxml.jackson.core.JsonToken t)	Writes the contents of the json node starting with the specified token into a complex vector.

Methods inherited from class org.apache.drill.exec.store.easy.json.reader.BaseJsonProcessor

getCurrentField, getDefaultMapper, getExceptionWithContext, getExceptionWithContext, ignoreJSONParseError, processJSONException, setIgnoreJSONParseErrors, setSource, setSource, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.drill.exec.store.easy.json.JsonProcessor

ensureAtLeastOneField

Constructor Details

BaseJsonReader

public BaseJsonReader(DrillBuf workBuf,
 boolean enableNanInf,
 boolean enableEscapeAnyChar,
 boolean skipOuterList)

Method Details

write

public JsonProcessor.ReadState write(BaseWriter.ComplexWriter writer)
                              throws IOException

Throws:

IOException

writeDocument

protected abstract void writeDocument(BaseWriter.ComplexWriter writer,
 com.fasterxml.jackson.core.JsonToken t)
                               throws IOException

Writes the contents of the json node starting with the specified token into a complex vector. Token can take the following values: - START_ARRAY - the top level of json document is an array and skipping of the outer list is disabled - START_OBJECT - the top level of json document is a set of white space delimited maps or skipping of the outer list is enabled

Throws:

IOException

createDocumentTopLevelException

protected UserException createDocumentTopLevelException()