org.apache.druid.segment.nested

Class NestedDataColumnSerializer

java.lang.Object

org.apache.druid.segment.nested.NestedDataColumnSerializer

All Implemented Interfaces:

GenericColumnSerializer<StructuredData>, Serializer

public class NestedDataColumnSerializer
extends Object
implements GenericColumnSerializer<StructuredData>

Field Summary

Fields

Modifier and Type	Field and Description
static String	DOUBLE_DICTIONARY_FILE_NAME
static org.apache.druid.segment.nested.NestedDataColumnSerializer.IntTypeStrategy	INT_TYPE_STRATEGY
static String	LONG_DICTIONARY_FILE_NAME
static String	NESTED_FIELD_PREFIX
static String	NULL_BITMAP_FILE_NAME
static String	RAW_FILE_NAME
static String	STRING_DICTIONARY_FILE_NAME

Constructor Summary

Constructors

Constructor and Description
NestedDataColumnSerializer(String name, IndexSpec indexSpec, SegmentWriteOutMedium segmentWriteOutMedium, ProgressIndicator progressIndicator, Closer closer)

Method Summary

Modifier and Type	Method and Description
static String	getInternalFileName(String fileNameBase, String field)
long	getSerializedSize() Returns the number of bytes, that this Serializer will write to the output _channel_ (not smoosher) on a Serializer.writeTo(java.nio.channels.WritableByteChannel, org.apache.druid.java.util.common.io.smoosh.FileSmoosher) call.
void	open()
void	serialize(ColumnValueSelector<? extends StructuredData> selector)
void	serializeDoubleDictionary(Iterable<Double> dictionaryValues)
void	serializeFields(SortedMap<String,NestedLiteralTypeInfo.MutableTypeSet> fields)
void	serializeLongDictionary(Iterable<Long> dictionaryValues)
void	serializeStringDictionary(Iterable<String> dictionaryValues)
void	writeTo(WritableByteChannel channel, FileSmoosher smoosher) Writes serialized form of this object to the given channel.

Methods inherited from class java.lang.Object

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

Field Detail

INT_TYPE_STRATEGY

public static final org.apache.druid.segment.nested.NestedDataColumnSerializer.IntTypeStrategy INT_TYPE_STRATEGY

STRING_DICTIONARY_FILE_NAME

public static final String STRING_DICTIONARY_FILE_NAME

See Also:

Constant Field Values

LONG_DICTIONARY_FILE_NAME

public static final String LONG_DICTIONARY_FILE_NAME

See Also:

Constant Field Values

DOUBLE_DICTIONARY_FILE_NAME

public static final String DOUBLE_DICTIONARY_FILE_NAME

See Also:

Constant Field Values

RAW_FILE_NAME

public static final String RAW_FILE_NAME

See Also:

Constant Field Values

NULL_BITMAP_FILE_NAME

public static final String NULL_BITMAP_FILE_NAME

See Also:

Constant Field Values

NESTED_FIELD_PREFIX

public static final String NESTED_FIELD_PREFIX

See Also:

Constant Field Values

Constructor Detail

NestedDataColumnSerializer

public NestedDataColumnSerializer(String name,
                                  IndexSpec indexSpec,
                                  SegmentWriteOutMedium segmentWriteOutMedium,
                                  ProgressIndicator progressIndicator,
                                  Closer closer)

Method Detail

open

public void open()
          throws IOException

Specified by:

open in interface GenericColumnSerializer<StructuredData>

Throws:

IOException

serializeFields

public void serializeFields(SortedMap<String,NestedLiteralTypeInfo.MutableTypeSet> fields)
                     throws IOException

Throws:

IOException

serializeStringDictionary

public void serializeStringDictionary(Iterable<String> dictionaryValues)
                               throws IOException

Throws:

IOException

serializeLongDictionary

public void serializeLongDictionary(Iterable<Long> dictionaryValues)
                             throws IOException

Throws:

IOException

serializeDoubleDictionary

public void serializeDoubleDictionary(Iterable<Double> dictionaryValues)
                               throws IOException

Throws:

IOException

serialize

public void serialize(ColumnValueSelector<? extends StructuredData> selector)
               throws IOException

Specified by:

serialize in interface GenericColumnSerializer<StructuredData>

Throws:

IOException

getSerializedSize

public long getSerializedSize()
                       throws IOException

Description copied from interface: Serializer

Returns the number of bytes, that this Serializer will write to the output _channel_ (not smoosher) on a Serializer.writeTo(java.nio.channels.WritableByteChannel, org.apache.druid.java.util.common.io.smoosh.FileSmoosher) call.

Specified by:

getSerializedSize in interface Serializer

Throws:

IOException

writeTo

public void writeTo(WritableByteChannel channel,
                    FileSmoosher smoosher)
             throws IOException

Description copied from interface: Serializer

Writes serialized form of this object to the given channel. If parallel data streams are needed, they could be created with the provided smoosher.

Specified by:

writeTo in interface Serializer

Throws:

IOException

getInternalFileName

public static String getInternalFileName(String fileNameBase,
                                         String field)