com.gpudb.protocol

Class AlterTableMetadataRequest

java.lang.Object

com.gpudb.protocol.AlterTableMetadataRequest

All Implemented Interfaces:

org.apache.avro.generic.GenericContainer, org.apache.avro.generic.IndexedRecord

public class AlterTableMetadataRequest
extends Object
implements org.apache.avro.generic.IndexedRecord

A set of parameters for GPUdb.alterTableMetadata(AlterTableMetadataRequest).

Updates (adds or changes) metadata for tables. The metadata key and values must both be strings. This is an easy way to annotate whole tables rather than single records within tables. Some examples of metadata are owner of the table, table creation timestamp etc.

Constructor Summary

Constructors

Constructor and Description
AlterTableMetadataRequest() Constructs an AlterTableMetadataRequest object with default parameters.
AlterTableMetadataRequest(List<String> tableNames, Map<String,String> metadataMap, Map<String,String> options) Constructs an AlterTableMetadataRequest object with the specified parameters.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
Object	get(int index) This method supports the Avro framework and is not intended to be called directly by the user.
static org.apache.avro.Schema	getClassSchema() This method supports the Avro framework and is not intended to be called directly by the user.
Map<String,String>	getMetadataMap()
Map<String,String>	getOptions()
org.apache.avro.Schema	getSchema() This method supports the Avro framework and is not intended to be called directly by the user.
List<String>	getTableNames()
int	hashCode()
void	put(int index, Object value) This method supports the Avro framework and is not intended to be called directly by the user.
AlterTableMetadataRequest	setMetadataMap(Map<String,String> metadataMap)
AlterTableMetadataRequest	setOptions(Map<String,String> options)
AlterTableMetadataRequest	setTableNames(List<String> tableNames)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

AlterTableMetadataRequest

public AlterTableMetadataRequest()

Constructs an AlterTableMetadataRequest object with default parameters.

AlterTableMetadataRequest

public AlterTableMetadataRequest(List<String> tableNames,
                                 Map<String,String> metadataMap,
                                 Map<String,String> options)

Constructs an AlterTableMetadataRequest object with the specified parameters.

Parameters:

tableNames - Names of the tables whose metadata will be updated. All specified tables must exist in GPUdb, or GPUdb will return an error.

metadataMap - A map which contains the metadata of the tables that are to be updated. Note that only one map is provided for all the tables; so the change will be applied to every table. If the provided map is empty, then all existing metadata for the table(s) will be cleared.

options - Optional parameters.

Method Detail

getClassSchema

public static org.apache.avro.Schema getClassSchema()

This method supports the Avro framework and is not intended to be called directly by the user.

Returns:

the schema for the class.

getTableNames

public List<String> getTableNames()

Returns:

Names of the tables whose metadata will be updated. All specified tables must exist in GPUdb, or GPUdb will return an error.

setTableNames

public AlterTableMetadataRequest setTableNames(List<String> tableNames)

Parameters:

tableNames - Names of the tables whose metadata will be updated. All specified tables must exist in GPUdb, or GPUdb will return an error.

Returns:

this to mimic the builder pattern.

getMetadataMap

public Map<String,String> getMetadataMap()

Returns:

A map which contains the metadata of the tables that are to be updated. Note that only one map is provided for all the tables; so the change will be applied to every table. If the provided map is empty, then all existing metadata for the table(s) will be cleared.

setMetadataMap

public AlterTableMetadataRequest setMetadataMap(Map<String,String> metadataMap)

Parameters:

metadataMap - A map which contains the metadata of the tables that are to be updated. Note that only one map is provided for all the tables; so the change will be applied to every table. If the provided map is empty, then all existing metadata for the table(s) will be cleared.

Returns:

this to mimic the builder pattern.

getOptions

public Map<String,String> getOptions()

Returns:

Optional parameters.

setOptions

public AlterTableMetadataRequest setOptions(Map<String,String> options)

Parameters:

options - Optional parameters.

Returns:

this to mimic the builder pattern.

getSchema

public org.apache.avro.Schema getSchema()

This method supports the Avro framework and is not intended to be called directly by the user.

Specified by:

getSchema in interface org.apache.avro.generic.GenericContainer

Returns:

the schema object describing this class.

get

public Object get(int index)

This method supports the Avro framework and is not intended to be called directly by the user.

Specified by:

get in interface org.apache.avro.generic.IndexedRecord

Parameters:

index - the position of the field to get

Returns:

value of the field with the given index.

Throws:

IndexOutOfBoundsException

put

public void put(int index,
                Object value)

This method supports the Avro framework and is not intended to be called directly by the user.

Specified by:

put in interface org.apache.avro.generic.IndexedRecord

Parameters:

index - the position of the field to set

value - the value to set

Throws:

IndexOutOfBoundsException

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object