Class WildcardIndex

java.lang.Object

org.springframework.data.mongodb.core.index.Index

org.springframework.data.mongodb.core.index.WildcardIndex

All Implemented Interfaces:

IndexDefinition

public class WildcardIndex
extends Index

WildcardIndex is a specific Index that can be used to include all fields into an index based on the $**" : 1 pattern on a root object (the one typically carrying the Document annotation). On those it is possible to use wildcardProjectionInclude(String...) and wildcardProjectionExclude(String...) to define specific paths for in-/exclusion.
It can also be used to define an index on a specific field path and its subfields, e.g. "path.to.field.$**" : 1.
Note that wildcardProjections are not allowed in this case.
LIMITATIONS

• Unique and ttl options are not supported.
• Keys used for sharding must not be included
• Cannot be used to generate any type of geo index.

Since:

3.3

Author:

Christoph Strobl

See Also:

• MongoDB Reference Documentation: Wildcard Indexes/

Constructor Summary

Constructors

Constructor	Description
WildcardIndex()	Create a new instance of WildcardIndex using $**.
WildcardIndex(@Nullable String path)	Create a new instance of WildcardIndex for the given path.

Method Summary

Modifier and Type	Method	Description
Index	expire(long seconds)	ttl option is not supported.
Index	expire(long value, TimeUnit timeUnit)	ttl option is not supported.
Index	expire(Duration duration)	ttl option is not supported.
org.bson.Document	getIndexKeys()	Get the Document containing properties covered by the index.
org.bson.Document	getIndexOptions()	Get the index properties such as unique,...
WildcardIndex	includeId()	Include the _id field in wildcardProjection.
WildcardIndex	named(String name)	Set the index name to use.
Index	unique()	Unique option is not supported.
WildcardIndex	wildcardProjection(Map<String,Object> includeExclude)	Set the fields to be in-/excluded from indexing via wildcardProjection.
WildcardIndex	wildcardProjectionExclude(String... paths)	Add fields to be excluded from indexing via wildcardProjection.
WildcardIndex	wildcardProjectionInclude(String... paths)	Add fields to be included from indexing via wildcardProjection.

Methods inherited from class Index

background, collation, hidden, on, partial, sparse, toString

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

WildcardIndex

public WildcardIndex()

Create a new instance of WildcardIndex using $**.

WildcardIndex

public WildcardIndex(@Nullable String path)

Create a new instance of WildcardIndex for the given path. If no path is provided the index will be considered a root one using $**.
NOTE: wildcardProjectionInclude(String...), wildcardProjectionExclude(String...) can only be used for top level index definitions having an empty or null path.

Parameters:

path - can be null. If null all fields will be indexed.

Method Details

includeId

@Contract("-> this")
public WildcardIndex includeId()

Include the _id field in wildcardProjection.

Returns:

this.

named

@Contract("_ -> this")
public WildcardIndex named(String name)

Set the index name to use.

Overrides:

named in class Index

Parameters:

name -

Returns:

this.

unique

@Contract("-> fail")
public Index unique()

Unique option is not supported.

Overrides:

unique in class Index

Returns:

this.

Throws:

UnsupportedOperationException - not supported for wildcard indexes.

See Also:

• https://docs.mongodb.org/manual/core/index-unique/

expire

@Contract("-> fail")
public Index expire(long seconds)

ttl option is not supported.

Overrides:

expire in class Index

Parameters:

seconds -

Returns:

this.

Throws:

UnsupportedOperationException - not supported for wildcard indexes.

expire

@Contract("_, _ -> fail")
public Index expire(long value,
 TimeUnit timeUnit)

ttl option is not supported.

Overrides:

expire in class Index

Parameters:

value -

timeUnit - must not be null.

Returns:

this.

Throws:

UnsupportedOperationException - not supported for wildcard indexes.

expire

@Contract("_ -> fail")
public Index expire(Duration duration)

ttl option is not supported.

Overrides:

expire in class Index

Parameters:

duration - must not be null.

Returns:

this.

Throws:

UnsupportedOperationException - not supported for wildcard indexes.

wildcardProjectionInclude

@Contract("_ -> this")
public WildcardIndex wildcardProjectionInclude(String... paths)

Add fields to be included from indexing via wildcardProjection.
This option is only allowed on top level wildcard indexes.

Parameters:

paths - must not be null.

Returns:

this.

wildcardProjectionExclude

@Contract("_ -> this")
public WildcardIndex wildcardProjectionExclude(String... paths)

Add fields to be excluded from indexing via wildcardProjection.
This option is only allowed on top level wildcard indexes.

Parameters:

paths - must not be null.

Returns:

this.

wildcardProjection

@Contract("_ -> this")
public WildcardIndex wildcardProjection(Map<String,Object> includeExclude)

Set the fields to be in-/excluded from indexing via wildcardProjection.
This option is only allowed on top level wildcard indexes.

Parameters:

includeExclude - must not be null.

Returns:

this.

getIndexKeys

public org.bson.Document getIndexKeys()

Description copied from interface: IndexDefinition

Get the Document containing properties covered by the index.

Specified by:

getIndexKeys in interface IndexDefinition

Overrides:

getIndexKeys in class Index

Returns:

never null.

getIndexOptions

public org.bson.Document getIndexOptions()

Description copied from interface: IndexDefinition

Get the index properties such as unique,...

Specified by:

getIndexOptions in interface IndexDefinition

Overrides:

getIndexOptions in class Index

Returns:

never null.