org.apache.drill.exec.client

Enum ServerMethod

java.lang.Object

java.lang.Enum<ServerMethod>

org.apache.drill.exec.client.ServerMethod

All Implemented Interfaces:

Serializable, Comparable<ServerMethod>

public enum ServerMethod
extends Enum<ServerMethod>

A enumeration of server methods, and the version they were introduced it allows to introduce new methods without changing the protocol, with client being able to gracefully handle cases were method is not handled by the server.

Enum Constant Summary

Enum Constants

Enum Constant and Description
CANCEL_QUERY Cancel an existing query
GET_CATALOGS Get catalog metadata
GET_COLUMNS Get columns metadata
GET_SCHEMAS Get schemas metadata
GET_SERVER_META Get server metadata
GET_TABLES Get tables metadata
PLAN_QUERY Plan a query without executing it
PREPARED_STATEMENT Prepare a query for deferred execution
RESUME_PAUSED_QUERY Resume a query
RUN_QUERY Submitting a query

Method Summary

Modifier and Type	Method and Description
Version	getMinVersion()
static ServerMethod	valueOf(String name) Returns the enum constant of this type with the specified name.
static ServerMethod[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

RUN_QUERY

public static final ServerMethod RUN_QUERY

Submitting a query

PLAN_QUERY

public static final ServerMethod PLAN_QUERY

Plan a query without executing it

CANCEL_QUERY

public static final ServerMethod CANCEL_QUERY

Cancel an existing query

RESUME_PAUSED_QUERY

public static final ServerMethod RESUME_PAUSED_QUERY

Resume a query

PREPARED_STATEMENT

public static final ServerMethod PREPARED_STATEMENT

Prepare a query for deferred execution

GET_CATALOGS

public static final ServerMethod GET_CATALOGS

Get catalog metadata

GET_SCHEMAS

public static final ServerMethod GET_SCHEMAS

Get schemas metadata

GET_TABLES

public static final ServerMethod GET_TABLES

Get tables metadata

GET_COLUMNS

public static final ServerMethod GET_COLUMNS

Get columns metadata

GET_SERVER_META

public static final ServerMethod GET_SERVER_META

Get server metadata

Method Detail

values

public static ServerMethod[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (ServerMethod c : ServerMethod.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static ServerMethod valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

getMinVersion

public Version getMinVersion()