Package org.apache.trevni

Class MetaData<T extends MetaData>

java.lang.Object

java.util.AbstractMap<String,byte[]>

java.util.HashMap<String,byte[]>

java.util.LinkedHashMap<String,byte[]>

org.apache.trevni.MetaData<T>

All Implemented Interfaces:

Serializable, Cloneable, Map<String,byte[]>

Direct Known Subclasses:

ColumnFileMetaData, ColumnMetaData

public class MetaData<T extends MetaData>
extends LinkedHashMap<String,byte[]>

Base class for metadata.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor	Description
MetaData()

Method Summary

Modifier and Type	Method	Description
boolean	getBoolean(String key)	Return true iff a key has any value, false if it is not present.
String	getChecksum()	Return the checksum algorithm name.
String	getCodec()	Return the compression codec name.
long	getLong(String key)	Return the value of a metadata property as a long.
String	getString(String key)	Return the value of a metadata property as a String.
static boolean	isReserved(String key)	Test if a metadata key is reserved.
T	set(String key, byte[] value)	Set a metadata property to a binary value.
T	set(String key, long value)	Set a metadata property to a long value.
T	set(String key, String value)	Set a metadata property to a String value.
T	setChecksum(String checksum)	Set the checksum algorithm name.
T	setCodec(String codec)	Set the compression codec name.
String	toString()

Methods inherited from class java.util.LinkedHashMap

clear, containsValue, entrySet, forEach, get, getOrDefault, keySet, removeEldestEntry, replaceAll, values

Methods inherited from class java.util.HashMap

clone, compute, computeIfAbsent, computeIfPresent, containsKey, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Methods inherited from class java.util.AbstractMap

equals, hashCode

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, containsKey, equals, hashCode, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Constructor Details

MetaData

public MetaData()

Method Details

getCodec

public String getCodec()

Return the compression codec name.

setCodec

public T setCodec(String codec)

Set the compression codec name.

getChecksum

public String getChecksum()

Return the checksum algorithm name.

setChecksum

public T setChecksum(String checksum)

Set the checksum algorithm name.

getString

public String getString(String key)

Return the value of a metadata property as a String.

getLong

public long getLong(String key)

Return the value of a metadata property as a long.

getBoolean

public boolean getBoolean(String key)

Return true iff a key has any value, false if it is not present.

set

public T set(String key,
 byte[] value)

Set a metadata property to a binary value.

isReserved

public static boolean isReserved(String key)

Test if a metadata key is reserved.

set

public T set(String key,
 String value)

Set a metadata property to a String value.

set

public T set(String key,
 long value)

Set a metadata property to a long value.

toString

public String toString()

Overrides:

toString in class AbstractMap<String,byte[]>