org.apache.arrow.flight.grpc

Class MetadataAdapter

java.lang.Object

org.apache.arrow.flight.grpc.MetadataAdapter

All Implemented Interfaces:

CallHeaders

public class MetadataAdapter
extends Object
implements CallHeaders

A mutable adapter between the gRPC Metadata object and the Flight headers interface.

This allows us to present the headers (metadata) from gRPC without copying to/from our own object.

Constructor Summary

Constructors

Constructor and Description
MetadataAdapter(io.grpc.Metadata metadata)

Method Summary

Modifier and Type	Method and Description
boolean	containsKey(String key) Check whether the given metadata key is present.
String	get(String key) Get the value of a metadata key.
Iterable<String>	getAll(String key) Get all values present for the given metadata key.
Iterable<byte[]>	getAllByte(String key) Get all values present for the given metadata key.
byte[]	getByte(String key) Get the value of a metadata key.
void	insert(String key, byte[] value) Insert a metadata pair with the given value.
void	insert(String key, String value) Insert a metadata pair with the given value.
Set<String>	keys() Get a set of all the metadata keys.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

MetadataAdapter

public MetadataAdapter(io.grpc.Metadata metadata)

Method Detail

get

public String get(String key)

Description copied from interface: CallHeaders

Get the value of a metadata key. If multiple values are present, then get the last one.

Specified by:

get in interface CallHeaders

getByte

public byte[] getByte(String key)

Description copied from interface: CallHeaders

Get the value of a metadata key. If multiple values are present, then get the last one.

Specified by:

getByte in interface CallHeaders

getAll

public Iterable<String> getAll(String key)

Description copied from interface: CallHeaders

Get all values present for the given metadata key.

Specified by:

getAll in interface CallHeaders

getAllByte

public Iterable<byte[]> getAllByte(String key)

Description copied from interface: CallHeaders

Get all values present for the given metadata key.

Specified by:

getAllByte in interface CallHeaders

insert

public void insert(String key,
                   String value)

Description copied from interface: CallHeaders

Insert a metadata pair with the given value.

Duplicate metadata are permitted.

Specified by:

insert in interface CallHeaders

insert

public void insert(String key,
                   byte[] value)

Description copied from interface: CallHeaders

Insert a metadata pair with the given value.

Duplicate metadata are permitted.

Specified by:

insert in interface CallHeaders

keys

public Set<String> keys()

Description copied from interface: CallHeaders

Get a set of all the metadata keys.

Specified by:

keys in interface CallHeaders

containsKey

public boolean containsKey(String key)

Description copied from interface: CallHeaders

Check whether the given metadata key is present.

Specified by:

containsKey in interface CallHeaders

toString

public String toString()

Overrides:

toString in class Object