org.apache.flink.table.catalog

接口 CatalogTable

所有超级接口:

CatalogBaseTable

所有已知实现类:

DefaultCatalogTable, ResolvedCatalogTable

@PublicEvolving
public interface CatalogTable
extends CatalogBaseTable

Represents the unresolved metadata of a table in a Catalog.

It contains all characteristics that can be expressed in a SQL CREATE TABLE statement. The framework will resolve instances of this interface to a ResolvedCatalogTable before passing it to a DynamicTableFactory for creating a connector to an external system.

A catalog implementer can either use of(Schema, String, List, Map) for a basic implementation of this interface or create a custom class that allows passing catalog-specific objects all the way down to the connector creation (if necessary).

嵌套类概要

从接口继承的嵌套类/接口 org.apache.flink.table.catalog.CatalogBaseTable

CatalogBaseTable.TableKind

方法概要

限定符和类型	方法和说明
CatalogTable	copy(Map<String,String> options) Returns a copy of this CatalogTable with given table options options.
static CatalogTable	fromProperties(Map<String,String> properties) Creates an instance of CatalogTable from a map of string properties that were previously created with ResolvedCatalogTable.toProperties().
List<String>	getPartitionKeys() Get the partition keys of the table.
default CatalogBaseTable.TableKind	getTableKind() The kind of table this CatalogBaseTable describes.
boolean	isPartitioned() Check if the table is partitioned or not.
static CatalogTable	of(Schema schema, String comment, List<String> partitionKeys, Map<String,String> options) Creates a basic implementation of this interface.
default Map<String,String>	toProperties() 已过时。 Only a ResolvedCatalogTable is serializable to properties.

从接口继承的方法 org.apache.flink.table.catalog.CatalogBaseTable

copy, getComment, getDescription, getDetailedDescription, getOptions, getSchema, getUnresolvedSchema

方法详细资料

of

static CatalogTable of(Schema schema,
                       @Nullable
                       String comment,
                       List<String> partitionKeys,
                       Map<String,String> options)

Creates a basic implementation of this interface.

The signature is similar to a SQL CREATE TABLE statement.

参数:

schema - unresolved schema

comment - optional comment

partitionKeys - list of partition keys or an empty list if not partitioned

options - options to configure the connector

fromProperties

static CatalogTable fromProperties(Map<String,String> properties)

Creates an instance of CatalogTable from a map of string properties that were previously created with ResolvedCatalogTable.toProperties().

参数:

properties - serialized version of a CatalogTable that includes schema, partition keys, and connector options

getTableKind

default CatalogBaseTable.TableKind getTableKind()

从接口复制的说明: CatalogBaseTable

The kind of table this CatalogBaseTable describes.

指定者:

getTableKind 在接口中 CatalogBaseTable

isPartitioned

boolean isPartitioned()

Check if the table is partitioned or not.

返回:

true if the table is partitioned; otherwise, false

getPartitionKeys

List<String> getPartitionKeys()

Get the partition keys of the table. This will be an empty set if the table is not partitioned.

返回:

partition keys of the table

copy

CatalogTable copy(Map<String,String> options)

Returns a copy of this CatalogTable with given table options options.

返回:

a new copy of this table with replaced table options

toProperties

@Deprecated
default Map<String,String> toProperties()

已过时。 Only a ResolvedCatalogTable is serializable to properties.

Serializes this instance into a map of string-based properties.

Compared to the pure table options in CatalogBaseTable.getOptions(), the map includes schema, partitioning, and other characteristics in a serialized form.