com.gpudb.protocol

Class CreateTableRequest

java.lang.Object

com.gpudb.protocol.CreateTableRequest

All Implemented Interfaces:

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

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

A set of parameters for GPUdb.createTable(CreateTableRequest).

Creates a new table or collection. If a new table is being created, the type of the table is given by typeId, which must the be the ID of a currently registered type (i.e. one created via GPUdb.createType(CreateTypeRequest)). The table will be created inside a collection if the option collection_name is specified. If that collection does not already exist, it will be created.

To create a new collection, specify the name of the collection in tableName and set the is_collection option to true; typeId will be ignored.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CreateTableRequest.Options Optional parameters.

Constructor Summary

Constructors

Constructor and Description
CreateTableRequest() Constructs a CreateTableRequest object with default parameters.
CreateTableRequest(String tableName, String typeId, Map<String,String> options) Constructs a CreateTableRequest object with the specified parameters.

Method Summary

Methods

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>	getOptions()
org.apache.avro.Schema	getSchema() This method supports the Avro framework and is not intended to be called directly by the user.
String	getTableName()
String	getTypeId()
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.
CreateTableRequest	setOptions(Map<String,String> options)
CreateTableRequest	setTableName(String tableName)
CreateTableRequest	setTypeId(String typeId)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

CreateTableRequest

public CreateTableRequest()

Constructs a CreateTableRequest object with default parameters.

CreateTableRequest

public CreateTableRequest(String tableName,
                  String typeId,
                  Map<String,String> options)

Constructs a CreateTableRequest object with the specified parameters.

Parameters:

tableName - Name of the table to be created. Error for requests with existing table of the same name and type id may be suppressed by using the no_error_if_exists option. See Tables for naming restrictions.

typeId - ID of a currently registered type. All objects added to the newly created table will be of this type. Ignored if is_collection is true.

options - Optional parameters.

• NO_ERROR_IF_EXISTS: If true, prevents an error from occurring if the table already exists and is of the given type. If a table with the same ID but a different type exists, it is still an error. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• COLLECTION_NAME: Name of a collection which is to contain the newly created table. If empty, then the newly created table will be a top-level table. If the collection does not allow duplicate types and it contains a table of the same type as the given one, then this table creation request will fail.
• IS_COLLECTION: Indicates whether the new table to be created will be a collection. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• DISALLOW_HOMOGENEOUS_TABLES: For a collection, indicates whether the collection prohibits containment of multiple tables of exactly the same data type. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• IS_REPLICATED: For a table, indicates whether the table is to be replicated to all the database ranks. This may be necessary when the table is to be joined with other tables in a query. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• FOREIGN_KEYS: Semicolon-separated list of foreign keys, of the format 'source_column references target_table(primary_key_column)'.
• FOREIGN_SHARD_KEY: Foreign shard key of the format 'source_column references shard_by_column from target_table(primary_key_column)'
• TTL: Sets the TTL of the table or collection specified in tableName. The value must be the desired TTL in minutes.
• IS_RESULT_TABLE: For a table, indicates whether the table is a non-persistent, memory-only table that will store the output of a proc executed with GPUdb.executeProc(ExecuteProcRequest). A result table cannot contain store_only, text_search, or string columns (char columns are acceptable), records cannot be inserted into it directly, and it will not be retained if the server is restarted. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.

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.

getTableName

public String getTableName()

Returns:

Name of the table to be created. Error for requests with existing table of the same name and type id may be suppressed by using the no_error_if_exists option. See Tables for naming restrictions.

setTableName

public CreateTableRequest setTableName(String tableName)

Parameters:

tableName - Name of the table to be created. Error for requests with existing table of the same name and type id may be suppressed by using the no_error_if_exists option. See Tables for naming restrictions.

Returns:

this to mimic the builder pattern.

getTypeId

public String getTypeId()

Returns:

ID of a currently registered type. All objects added to the newly created table will be of this type. Ignored if is_collection is true.

setTypeId

public CreateTableRequest setTypeId(String typeId)

Parameters:

typeId - ID of a currently registered type. All objects added to the newly created table will be of this type. Ignored if is_collection is true.

Returns:

this to mimic the builder pattern.

getOptions

public Map<String,String> getOptions()

Returns:

Optional parameters.

• NO_ERROR_IF_EXISTS: If true, prevents an error from occurring if the table already exists and is of the given type. If a table with the same ID but a different type exists, it is still an error. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• COLLECTION_NAME: Name of a collection which is to contain the newly created table. If empty, then the newly created table will be a top-level table. If the collection does not allow duplicate types and it contains a table of the same type as the given one, then this table creation request will fail.
• IS_COLLECTION: Indicates whether the new table to be created will be a collection. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• DISALLOW_HOMOGENEOUS_TABLES: For a collection, indicates whether the collection prohibits containment of multiple tables of exactly the same data type. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• IS_REPLICATED: For a table, indicates whether the table is to be replicated to all the database ranks. This may be necessary when the table is to be joined with other tables in a query. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• FOREIGN_KEYS: Semicolon-separated list of foreign keys, of the format 'source_column references target_table(primary_key_column)'.
• FOREIGN_SHARD_KEY: Foreign shard key of the format 'source_column references shard_by_column from target_table(primary_key_column)'
• TTL: Sets the TTL of the table or collection specified in tableName. The value must be the desired TTL in minutes.
• IS_RESULT_TABLE: For a table, indicates whether the table is a non-persistent, memory-only table that will store the output of a proc executed with GPUdb.executeProc(ExecuteProcRequest). A result table cannot contain store_only, text_search, or string columns (char columns are acceptable), records cannot be inserted into it directly, and it will not be retained if the server is restarted. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.

setOptions

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

Parameters:

options - Optional parameters.

• NO_ERROR_IF_EXISTS: If true, prevents an error from occurring if the table already exists and is of the given type. If a table with the same ID but a different type exists, it is still an error. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• COLLECTION_NAME: Name of a collection which is to contain the newly created table. If empty, then the newly created table will be a top-level table. If the collection does not allow duplicate types and it contains a table of the same type as the given one, then this table creation request will fail.
• IS_COLLECTION: Indicates whether the new table to be created will be a collection. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• DISALLOW_HOMOGENEOUS_TABLES: For a collection, indicates whether the collection prohibits containment of multiple tables of exactly the same data type. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• IS_REPLICATED: For a table, indicates whether the table is to be replicated to all the database ranks. This may be necessary when the table is to be joined with other tables in a query. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.
• FOREIGN_KEYS: Semicolon-separated list of foreign keys, of the format 'source_column references target_table(primary_key_column)'.
• FOREIGN_SHARD_KEY: Foreign shard key of the format 'source_column references shard_by_column from target_table(primary_key_column)'
• TTL: Sets the TTL of the table or collection specified in tableName. The value must be the desired TTL in minutes.
• IS_RESULT_TABLE: For a table, indicates whether the table is a non-persistent, memory-only table that will store the output of a proc executed with GPUdb.executeProc(ExecuteProcRequest). A result table cannot contain store_only, text_search, or string columns (char columns are acceptable), records cannot be inserted into it directly, and it will not be retained if the server is restarted. Supported values:
  • TRUE
  • FALSE
  The default value is FALSE.

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