Package org.elasticsearch.cluster.metadata

Interface IndexAbstraction

All Known Implementing Classes:

IndexAbstraction.Alias, IndexAbstraction.ConcreteIndex, IndexAbstraction.DataStream

public interface IndexAbstraction

An index abstraction is a reference to one or more concrete indices. An index abstraction has a unique name and encapsulates all the IndexMetadata instances it is pointing to. Also depending on type it may refer to a single or many concrete indices and may or may not have a write index.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	IndexAbstraction.Alias	Represents an alias and groups all IndexMetadata instances sharing the same alias name together.
static class	IndexAbstraction.ConcreteIndex	Represents an concrete index and encapsulates its IndexMetadata
static class	IndexAbstraction.DataStream
static enum	IndexAbstraction.Type	An index abstraction type.

Method Summary

Modifier and Type	Method	Description
List<String>	getAliases()
List<Index>	getIndices()
String	getName()
IndexAbstraction.DataStream	getParentDataStream()
IndexAbstraction.Type	getType()
Index	getWriteIndex()	A write index is a dedicated concrete index, that accepts all the new documents that belong to an index abstraction.
default boolean	isDataStreamRelated()
boolean	isHidden()
boolean	isSystem()

Method Details

getType

IndexAbstraction.Type getType()

Returns:

the type of the index abstraction

getName

String getName()

Returns:

the name of the index abstraction

getIndices

List<Index> getIndices()

Returns:

All IndexMetadata of all concrete indices this index abstraction is referring to.

getWriteIndex

@Nullable
Index getWriteIndex()

A write index is a dedicated concrete index, that accepts all the new documents that belong to an index abstraction.

A write index may also be a regular concrete index of a index abstraction and may therefore also be returned by getIndices(). An index abstraction may also not have a dedicated write index.

Returns:

the write index of this index abstraction or null if this index abstraction doesn't have a write index.

getParentDataStream

@Nullable
IndexAbstraction.DataStream getParentDataStream()

Returns:

the data stream to which this index belongs or null if this is not a concrete index or if it is a concrete index that does not belong to a data stream.

isHidden

boolean isHidden()

Returns:

whether this index abstraction is hidden or not

isSystem

boolean isSystem()

Returns:

whether this index abstraction should be treated as a system index or not

isDataStreamRelated

default boolean isDataStreamRelated()

Returns:

whether this index abstraction is related to data streams

getAliases

@Nullable
List<String> getAliases()

Returns:

the names of aliases referring to this instance. Returns null if aliases can't point to this instance.