Package com.gpudb.protocol

Class AlterSchemaRequest

java.lang.Object

com.gpudb.protocol.AlterSchemaRequest

All Implemented Interfaces:

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

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

A set of parameters for GPUdb.alterSchema.

Used to change the name of a SQL-style schema, specified in schemaName.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	AlterSchemaRequest.Action	A set of string constants for the AlterSchemaRequest parameter action.

Constructor Summary

Constructors

Constructor	Description
AlterSchemaRequest()	Constructs an AlterSchemaRequest object with default parameters.
AlterSchemaRequest(String schemaName, String action, String value, Map<String,String> options)	Constructs an AlterSchemaRequest object with the specified parameters.

Method Summary

Modifier and Type	Method	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.
String	getAction()	Modification operation to be applied.
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>	getOptions()	Optional parameters.
org.apache.avro.Schema	getSchema()	This method supports the Avro framework and is not intended to be called directly by the user.
String	getSchemaName()	Name of the schema to be altered.
String	getValue()	The value of the modification, depending on action.
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.
AlterSchemaRequest	setAction(String action)	Modification operation to be applied.
AlterSchemaRequest	setOptions(Map<String,String> options)	Optional parameters.
AlterSchemaRequest	setSchemaName(String schemaName)	Name of the schema to be altered.
AlterSchemaRequest	setValue(String value)	The value of the modification, depending on action.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

AlterSchemaRequest

public AlterSchemaRequest()

Constructs an AlterSchemaRequest object with default parameters.

AlterSchemaRequest

public AlterSchemaRequest(String schemaName,
                          String action,
                          String value,
                          Map<String,String> options)

Constructs an AlterSchemaRequest object with the specified parameters.

Parameters:

schemaName - Name of the schema to be altered.

action - Modification operation to be applied. Supported values:

• ADD_COMMENT: Adds a comment describing the schema
• RENAME_SCHEMA: Renames a schema to value. Has the same naming restrictions as tables.

value - The value of the modification, depending on action. For now the only value of action is RENAME_SCHEMA. In this case the value is the new name of the schema.

options - Optional parameters. The default value is an empty Map.

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.

getSchemaName

public String getSchemaName()

Name of the schema to be altered.

Returns:

The current value of schemaName.

setSchemaName

public AlterSchemaRequest setSchemaName(String schemaName)

Name of the schema to be altered.

Parameters:

schemaName - The new value for schemaName.

Returns:

this to mimic the builder pattern.

getAction

public String getAction()

Modification operation to be applied. Supported values:

• ADD_COMMENT: Adds a comment describing the schema
• RENAME_SCHEMA: Renames a schema to value. Has the same naming restrictions as tables.

Returns:

The current value of action.

setAction

public AlterSchemaRequest setAction(String action)

Modification operation to be applied. Supported values:

• ADD_COMMENT: Adds a comment describing the schema
• RENAME_SCHEMA: Renames a schema to value. Has the same naming restrictions as tables.

Parameters:

action - The new value for action.

Returns:

this to mimic the builder pattern.

getValue

public String getValue()

The value of the modification, depending on action. For now the only value of action is RENAME_SCHEMA. In this case the value is the new name of the schema.

Returns:

The current value of value.

setValue

public AlterSchemaRequest setValue(String value)

The value of the modification, depending on action. For now the only value of action is RENAME_SCHEMA. In this case the value is the new name of the schema.

Parameters:

value - The new value for value.

Returns:

this to mimic the builder pattern.

getOptions

public Map<String,String> getOptions()

Optional parameters. The default value is an empty Map.

Returns:

The current value of options.

setOptions

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

Optional parameters. The default value is an empty Map.

Parameters:

options - The new value for options.

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