org.apache.calcite.schema

Enum Schema.TableType

java.lang.Object

java.lang.Enum<Schema.TableType>

org.apache.calcite.schema.Schema.TableType

All Implemented Interfaces:

Serializable, Comparable<Schema.TableType>

Enclosing interface:

Schema

public static enum Schema.TableType
extends Enum<Schema.TableType>

Table type.

Enum Constant Summary

Enum Constants

Enum Constant and Description
INDEX Index table.
JOIN Join table.
LOCAL_TEMPORARY A table that is only visible to one connection.
SEQUENCE Sequence table.
STAR A structure, similar to a view, that is the basis for auto-generated materializations.
STREAM Stream.
SYSTEM_TABLE A table maintained by the system.
TABLE A regular table.
VIEW A relation whose contents are calculated by evaluating a SQL expression.

Method Summary

Methods

Modifier and Type	Method and Description
static Schema.TableType	valueOf(String name) Returns the enum constant of this type with the specified name.
static Schema.TableType[]	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

TABLE

public static final Schema.TableType TABLE

A regular table.

VIEW

public static final Schema.TableType VIEW

A relation whose contents are calculated by evaluating a SQL expression.

SYSTEM_TABLE

public static final Schema.TableType SYSTEM_TABLE

A table maintained by the system. Data dictionary tables, such as the "TABLES" and "COLUMNS" table in the "metamodel" schema, examples of system tables.

LOCAL_TEMPORARY

public static final Schema.TableType LOCAL_TEMPORARY

A table that is only visible to one connection.

STAR

public static final Schema.TableType STAR

A structure, similar to a view, that is the basis for auto-generated materializations. It is either a single table or a collection of tables that are joined via many-to-one relationships from a central hub table. It is not available for queries, but is just used as an intermediate structure during query planning.

INDEX

public static final Schema.TableType INDEX

Index table.

Used by Apache Phoenix.

JOIN

public static final Schema.TableType JOIN

Join table.

Used by Apache Phoenix.

SEQUENCE

public static final Schema.TableType SEQUENCE

Sequence table.

Used by Apache Phoenix, and others. Must have a single BIGINT column called "$seq".

STREAM

public static final Schema.TableType STREAM

Stream.

Method Detail

values

public static Schema.TableType[] 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 (Schema.TableType c : Schema.TableType.values())
    System.out.println(c);

Returns:

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

valueOf

public static Schema.TableType 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