Package io.micronaut.data.jdbc.operations

Class DefaultJdbcRepositoryOperations

java.lang.Object

io.micronaut.data.runtime.operations.internal.AbstractRepositoryOperations

io.micronaut.data.runtime.operations.internal.sql.AbstractSqlRepositoryOperations<ResultSet,PreparedStatement,SQLException>

io.micronaut.data.jdbc.operations.DefaultJdbcRepositoryOperations

All Implemented Interfaces:

io.micronaut.context.ApplicationContextProvider, io.micronaut.core.convert.ConversionServiceProvider, JdbcRepositoryOperations, JdbcOperations, AsyncCapableRepository, DeleteReturningRepositoryOperations, HintsCapableRepository, ReactiveCapableRepository, RepositoryOperations, SyncCascadeOperations.SyncCascadeOperationsHelper<DefaultJdbcRepositoryOperations.JdbcOperationContext>, MethodContextAwareStoredQueryDecorator, PreparedQueryDecorator, AutoCloseable

@EachBean(javax.sql.DataSource.class)
@Internal
public final class DefaultJdbcRepositoryOperations
extends AbstractSqlRepositoryOperations<ResultSet,PreparedStatement,SQLException>
implements JdbcRepositoryOperations, DeleteReturningRepositoryOperations, AsyncCapableRepository, ReactiveCapableRepository, AutoCloseable, SyncCascadeOperations.SyncCascadeOperationsHelper<DefaultJdbcRepositoryOperations.JdbcOperationContext>

Implementation of JdbcRepositoryOperations.

Since:

1.0.0

Author:

graemerocher, Denis Stepanov

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	DefaultJdbcRepositoryOperations.JdbcOperationContext

Nested classes/interfaces inherited from class io.micronaut.data.runtime.operations.internal.sql.AbstractSqlRepositoryOperations

AbstractSqlRepositoryOperations.StatementSupplier<PS>

Field Summary

Fields inherited from class io.micronaut.data.runtime.operations.internal.sql.AbstractSqlRepositoryOperations

columnIndexResultSetReader, columnNameResultSetReader, dataSourceName, jsonMapper, preparedStatementWriter, QUERY_LOG, queryBuilders, repositoriesWithHardcodedDataSource, sqlJsonColumnMapperProvider

Fields inherited from class io.micronaut.data.runtime.operations.internal.AbstractRepositoryOperations

attributeConverterRegistry, conversionService, dateTimeProvider, entityEventRegistry, runtimeEntityRegistry

Method Summary

Modifier and Type	Method	Description
@NonNull ExecutorAsyncOperations	async()
void	close()
<T> long	count(PagedQuery<T> pagedQuery)	Counts all results for the given query.
protected ResultReader<ResultSet,String>	createColumnNameResultSetReaderWithColumnExistenceAware()
protected SqlTypeMapper<ResultSet,jakarta.persistence.Tuple>	createTupleMapper()
<T> int	delete(@NonNull DeleteOperation<T> operation)	Deletes the entity.
<T> Optional<Number>	deleteAll(@NonNull DeleteBatchOperation<T> operation)	Deletes all the entities of the given type.
<E, R> List<R>	deleteAllReturning(DeleteReturningBatchOperation<E,R> operation)	Deletes the entities and returns a result.
<E, R> R	deleteReturning(DeleteReturningOperation<E,R> operation)	Deletes the entity and returns a result.
<T> @NonNull Stream<T>	entityStream(@NonNull ResultSet resultSet, @NonNull Class<T> rootEntity)	Map a result set to a stream of the given type.
<T> @NonNull Stream<T>	entityStream(@NonNull ResultSet resultSet, @Nullable String prefix, @NonNull Class<T> rootEntity)	Map a result set to a stream of the given type.
<R> R	execute(@NonNull ConnectionCallback<R> callback)	Execute the given operation with the given callback.
<R> List<R>	execute(PreparedQuery<?,R> pq)	Executes the given query with parameter values returning a result.
@NonNull Optional<Number>	executeUpdate(@NonNull PreparedQuery<?,Number> pq)	Executes an update for the given query and parameter values.
<T> boolean	exists(@NonNull PreparedQuery<T,Boolean> pq)	Execute a query that checks for existence.
<T> @NonNull Iterable<T>	findAll(@NonNull PagedQuery<T> query)	Finds all results for the given query.
<T, R> @NonNull Iterable<R>	findAll(@NonNull PreparedQuery<T,R> preparedQuery)	Finds all results for the given query.
<T, R> R	findOne(@NonNull PreparedQuery<T,R> pq)	Find one by Query.
<T> T	findOne(@NonNull Class<T> type, @NonNull Object id)	Find one by ID.
<R> Page<R>	findPage(@NonNull PagedQuery<R> query)	Find a page for the given entity and pageable.
<T> @NonNull Stream<T>	findStream(@NonNull PagedQuery<T> query)	Finds a stream for the given arguments.
<T, R> @NonNull Stream<R>	findStream(@NonNull PreparedQuery<T,R> preparedQuery)	Finds all results for the given query.
@NonNull Connection	getConnection()	This method will return the currently active connection for the current transaction or throw an exception if no transaction is present.
@NonNull DataSource	getDataSource()
protected Integer	getFirstResultSetIndex()
boolean	isSupportsBatchInsert(DefaultJdbcRepositoryOperations.JdbcOperationContext jdbcOperationContext, RuntimePersistentEntity<?> persistentEntity)	Is supports batch insert.
<T> T	persist(@NonNull InsertOperation<T> operation)	Persist the operation returning a possibly new entity.
<T> @NonNull Iterable<T>	persistAll(@NonNull InsertBatchOperation<T> operation)	Persist all the given entities.
<T> List<T>	persistBatch(DefaultJdbcRepositoryOperations.JdbcOperationContext ctx, Iterable<T> values, RuntimePersistentEntity<T> childPersistentEntity, Predicate<T> predicate)	Persist multiple entities in batch during cascade.
void	persistManyAssociation(DefaultJdbcRepositoryOperations.JdbcOperationContext ctx, RuntimeAssociation runtimeAssociation, Object value, RuntimePersistentEntity<Object> persistentEntity, Object child, RuntimePersistentEntity<Object> childPersistentEntity)	Persist JOIN table relationship.
void	persistManyAssociationBatch(DefaultJdbcRepositoryOperations.JdbcOperationContext ctx, RuntimeAssociation runtimeAssociation, Object value, RuntimePersistentEntity<Object> persistentEntity, Iterable<Object> child, RuntimePersistentEntity<Object> childPersistentEntity)	Persist JOIN table relationships in batch.
<T> T	persistOne(DefaultJdbcRepositoryOperations.JdbcOperationContext ctx, T value, RuntimePersistentEntity<T> persistentEntity)	Persist one entity during cascade.
<R> R	prepareStatement(@NonNull String sql, @NonNull PreparedStatementCallback<R> callback)	Execute the given operation with the given callback.
@NonNull ReactiveRepositoryOperations	reactive()
<E, D> D	readDTO(@NonNull String prefix, @NonNull ResultSet resultSet, @NonNull Class<E> rootEntity, @NonNull Class<D> dtoType)	Read an entity using the given prefix to be passes to result set lookups.
<E> E	readEntity(@NonNull String prefix, @NonNull ResultSet resultSet, @NonNull Class<E> type)	Read an entity using the given prefix to be passes to result set lookups.
<T> T	update(@NonNull UpdateOperation<T> operation)	Updates the entity for the given operation.
<T> @NonNull Iterable<T>	updateAll(@NonNull UpdateBatchOperation<T> operation)	Updates the entities for the given operation.
<T> T	updateOne(DefaultJdbcRepositoryOperations.JdbcOperationContext ctx, T value, RuntimePersistentEntity<T> persistentEntity)	Update one entity during cascade.

Methods inherited from class io.micronaut.data.runtime.operations.internal.sql.AbstractSqlRepositoryOperations

createMapper, createQueryResultMapper, decorate, decorate, getJsonColumn, getJsonDataType, getSqlPreparedQuery, getSqlStoredQuery, isJsonEntityGeneratedId, isJsonResult, isSupportsBatchDelete, isSupportsBatchInsert, isSupportsBatchInsert, isSupportsBatchUpdate, prepareStatement, resolveAssociationInsert, resolveEntityInsert, resolveEntityUpdate, resolveSqlInsertAssociation, setStatementParameter

Methods inherited from class io.micronaut.data.runtime.operations.internal.AbstractRepositoryOperations

checkOptimisticLocking, getApplicationContext, getConversionService, getEntity, getIdReader, isOnlySingleEndedJoins, triggerPostLoad

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.micronaut.context.ApplicationContextProvider

getApplicationContext

Methods inherited from interface io.micronaut.core.convert.ConversionServiceProvider

getConversionService

Methods inherited from interface io.micronaut.data.operations.HintsCapableRepository

getQueryHints

Methods inherited from interface io.micronaut.data.jdbc.runtime.JdbcOperations

readDTO, readEntity

Methods inherited from interface io.micronaut.data.operations.RepositoryOperations

executeDelete, getEntity

Methods inherited from interface io.micronaut.data.runtime.operations.internal.SyncCascadeOperations.SyncCascadeOperationsHelper

isSupportsBatchDelete, isSupportsBatchUpdate

Method Details

createColumnNameResultSetReaderWithColumnExistenceAware

protected ResultReader<ResultSet,String> createColumnNameResultSetReaderWithColumnExistenceAware()

Overrides:

createColumnNameResultSetReaderWithColumnExistenceAware in class AbstractSqlRepositoryOperations<ResultSet,PreparedStatement,SQLException>

Returns:

The result reader that will check for the column existence and return null for ResultReader.readDynamic(Object, Object, DataType)

getFirstResultSetIndex

protected Integer getFirstResultSetIndex()

Specified by:

getFirstResultSetIndex in class AbstractSqlRepositoryOperations<ResultSet,PreparedStatement,SQLException>

Returns:

The first result set index.

createTupleMapper

protected SqlTypeMapper<ResultSet,jakarta.persistence.Tuple> createTupleMapper()

Specified by:

createTupleMapper in class AbstractSqlRepositoryOperations<ResultSet,PreparedStatement,SQLException>

persistOne

public <T> T persistOne(DefaultJdbcRepositoryOperations.JdbcOperationContext ctx,
 T value,
 RuntimePersistentEntity<T> persistentEntity)

Description copied from interface: SyncCascadeOperations.SyncCascadeOperationsHelper

Persist one entity during cascade.

Specified by:

persistOne in interface SyncCascadeOperations.SyncCascadeOperationsHelper<DefaultJdbcRepositoryOperations.JdbcOperationContext>

Type Parameters:

T - The entity type

Parameters:

ctx - The context

value - The entity value

persistentEntity - The persistent entity

Returns:

The entity value

persistBatch

public <T> List<T> persistBatch(DefaultJdbcRepositoryOperations.JdbcOperationContext ctx,
 Iterable<T> values,
 RuntimePersistentEntity<T> childPersistentEntity,
 Predicate<T> predicate)

Description copied from interface: SyncCascadeOperations.SyncCascadeOperationsHelper

Persist multiple entities in batch during cascade.

Specified by:

persistBatch in interface SyncCascadeOperations.SyncCascadeOperationsHelper<DefaultJdbcRepositoryOperations.JdbcOperationContext>

Type Parameters:

T - The entity type

Parameters:

ctx - The context

values - The entity values

childPersistentEntity - The persistent entity

predicate - The veto predicate

Returns:

The entity values

updateOne

public <T> T updateOne(DefaultJdbcRepositoryOperations.JdbcOperationContext ctx,
 T value,
 RuntimePersistentEntity<T> persistentEntity)

Description copied from interface: SyncCascadeOperations.SyncCascadeOperationsHelper

Update one entity during cascade.

Specified by:

updateOne in interface SyncCascadeOperations.SyncCascadeOperationsHelper<DefaultJdbcRepositoryOperations.JdbcOperationContext>

Type Parameters:

T - The entity type

Parameters:

ctx - The context

value - The entity value

persistentEntity - The persistent entity

Returns:

The entity value

persistManyAssociation

public void persistManyAssociation(DefaultJdbcRepositoryOperations.JdbcOperationContext ctx,
 RuntimeAssociation runtimeAssociation,
 Object value,
 RuntimePersistentEntity<Object> persistentEntity,
 Object child,
 RuntimePersistentEntity<Object> childPersistentEntity)

Description copied from interface: SyncCascadeOperations.SyncCascadeOperationsHelper

Persist JOIN table relationship.

Specified by:

persistManyAssociation in interface SyncCascadeOperations.SyncCascadeOperationsHelper<DefaultJdbcRepositoryOperations.JdbcOperationContext>

Parameters:

ctx - The context

runtimeAssociation - The association

value - The parent entity value

persistentEntity - The parent persistent entity

child - The child entity value

childPersistentEntity - The child persistent entity

persistManyAssociationBatch

public void persistManyAssociationBatch(DefaultJdbcRepositoryOperations.JdbcOperationContext ctx,
 RuntimeAssociation runtimeAssociation,
 Object value,
 RuntimePersistentEntity<Object> persistentEntity,
 Iterable<Object> child,
 RuntimePersistentEntity<Object> childPersistentEntity)

Description copied from interface: SyncCascadeOperations.SyncCascadeOperationsHelper

Persist JOIN table relationships in batch.

Specified by:

persistManyAssociationBatch in interface SyncCascadeOperations.SyncCascadeOperationsHelper<DefaultJdbcRepositoryOperations.JdbcOperationContext>

Parameters:

ctx - The context

runtimeAssociation - The association

value - The parent entity value

persistentEntity - The parent persistent entity

child - The child entity values

childPersistentEntity - The child persistent entity

async

@NonNull
public @NonNull ExecutorAsyncOperations async()

Specified by:

async in interface AsyncCapableRepository

Returns:

The async operations.

reactive

@NonNull
public @NonNull ReactiveRepositoryOperations reactive()

Specified by:

reactive in interface ReactiveCapableRepository

Returns:

The reactive operations instance.

findOne

@Nullable
public <T,
R> R findOne(@NonNull
 @NonNull PreparedQuery<T,R> pq)

Description copied from interface: RepositoryOperations

Find one by Query.

Specified by:

findOne in interface RepositoryOperations

Type Parameters:

T - The generic resultType

R - The result type

Parameters:

pq - The prepared query

Returns:

A result or null

exists

public <T> boolean exists(@NonNull
 @NonNull PreparedQuery<T,Boolean> pq)

Description copied from interface: RepositoryOperations

Execute a query that checks for existence.

Specified by:

exists in interface RepositoryOperations

Type Parameters:

T - The generic resultType

Parameters:

pq - The prepared query

Returns:

A result or null

findStream

@NonNull
public <T,
R> @NonNull Stream<R> findStream(@NonNull
 @NonNull PreparedQuery<T,R> preparedQuery)

Description copied from interface: RepositoryOperations

Finds all results for the given query.

Specified by:

findStream in interface RepositoryOperations

Type Parameters:

T - The entity type

R - The result type

Parameters:

preparedQuery - The prepared query

Returns:

An iterable result

findAll

@NonNull
public <T,
R> @NonNull Iterable<R> findAll(@NonNull
 @NonNull PreparedQuery<T,R> preparedQuery)

Description copied from interface: RepositoryOperations

Finds all results for the given query.

Specified by:

findAll in interface RepositoryOperations

Type Parameters:

T - The entity type

R - The result type

Parameters:

preparedQuery - The prepared query

Returns:

An iterable result

executeUpdate

@NonNull
public @NonNull Optional<Number> executeUpdate(@NonNull
 @NonNull PreparedQuery<?,Number> pq)

Description copied from interface: RepositoryOperations

Executes an update for the given query and parameter values. If it is possible to return the number of objects updated, then do so.

Specified by:

executeUpdate in interface RepositoryOperations

Parameters:

pq - The prepared query

Returns:

An optional number with the count of the number of records updated

execute

public <R> List<R> execute(PreparedQuery<?,R> pq)

Description copied from interface: RepositoryOperations

Executes the given query with parameter values returning a result.

Specified by:

execute in interface RepositoryOperations

Type Parameters:

R - The result type

Parameters:

pq - The prepared query

Returns:

The result

deleteAll

public <T> Optional<Number> deleteAll(@NonNull
 @NonNull DeleteBatchOperation<T> operation)

Description copied from interface: RepositoryOperations

Deletes all the entities of the given type.

Specified by:

deleteAll in interface RepositoryOperations

Type Parameters:

T - The generic type

Parameters:

operation - The operation

Returns:

The number of entities deleted

delete

public <T> int delete(@NonNull
 @NonNull DeleteOperation<T> operation)

Description copied from interface: RepositoryOperations

Deletes the entity.

Specified by:

delete in interface RepositoryOperations

Type Parameters:

T - The generic type

Parameters:

operation - The operation

Returns:

The number of entities deleted

deleteReturning

public <E,
R> R deleteReturning(DeleteReturningOperation<E,R> operation)

Description copied from interface: DeleteReturningRepositoryOperations

Deletes the entity and returns a result.

Specified by:

deleteReturning in interface DeleteReturningRepositoryOperations

Type Parameters:

E - The entity type

R - The result type

Parameters:

operation - The operation

Returns:

The deleted entity

deleteAllReturning

public <E,
R> List<R> deleteAllReturning(DeleteReturningBatchOperation<E,R> operation)

Description copied from interface: DeleteReturningRepositoryOperations

Deletes the entities and returns a result.

Specified by:

deleteAllReturning in interface DeleteReturningRepositoryOperations

Type Parameters:

E - The entity type

R - The result type

Parameters:

operation - The operation

Returns:

The deleted entities

update

@NonNull
public <T> T update(@NonNull
 @NonNull UpdateOperation<T> operation)

Description copied from interface: RepositoryOperations

Updates the entity for the given operation.

Specified by:

update in interface RepositoryOperations

Type Parameters:

T - The generic type

Parameters:

operation - The operation

Returns:

The operation

updateAll

@NonNull
public <T> @NonNull Iterable<T> updateAll(@NonNull
 @NonNull UpdateBatchOperation<T> operation)

Description copied from interface: RepositoryOperations

Updates the entities for the given operation.

Specified by:

updateAll in interface RepositoryOperations

Type Parameters:

T - The generic type

Parameters:

operation - The operation

Returns:

The updated entities

persist

@NonNull
public <T> T persist(@NonNull
 @NonNull InsertOperation<T> operation)

Description copied from interface: RepositoryOperations

Persist the operation returning a possibly new entity.

Specified by:

persist in interface RepositoryOperations

Type Parameters:

T - The generic type

Parameters:

operation - The operation

Returns:

The operation

findOne

@Nullable
public <T> T findOne(@NonNull
 @NonNull Class<T> type,
 @NonNull
 @NonNull Object id)

Description copied from interface: RepositoryOperations

Find one by ID.

Specified by:

findOne in interface RepositoryOperations

Type Parameters:

T - The generic type

Parameters:

type - The type

id - The id

Returns:

A result or null

findAll

@NonNull
public <T> @NonNull Iterable<T> findAll(@NonNull
 @NonNull PagedQuery<T> query)

Description copied from interface: RepositoryOperations

Finds all results for the given query.

Specified by:

findAll in interface RepositoryOperations

Type Parameters:

T - The generic type

Parameters:

query - The root entity

Returns:

An iterable result

count

public <T> long count(PagedQuery<T> pagedQuery)

Description copied from interface: RepositoryOperations

Counts all results for the given query.

Specified by:

count in interface RepositoryOperations

Type Parameters:

T - The generic type

Parameters:

pagedQuery - The paged query

Returns:

An iterable result

findStream

@NonNull
public <T> @NonNull Stream<T> findStream(@NonNull
 @NonNull PagedQuery<T> query)

Description copied from interface: RepositoryOperations

Finds a stream for the given arguments.

Specified by:

findStream in interface RepositoryOperations

Type Parameters:

T - The generic type

Parameters:

query - The query

Returns:

The stream

findPage

public <R> Page<R> findPage(@NonNull
 @NonNull PagedQuery<R> query)

Description copied from interface: RepositoryOperations

Find a page for the given entity and pageable.

Specified by:

findPage in interface RepositoryOperations

Type Parameters:

R - The entity generic type

Parameters:

query - The query

Returns:

The page type

persistAll

@NonNull
public <T> @NonNull Iterable<T> persistAll(@NonNull
 @NonNull InsertBatchOperation<T> operation)

Description copied from interface: RepositoryOperations

Persist all the given entities.

Specified by:

persistAll in interface RepositoryOperations

Type Parameters:

T - The generic type

Parameters:

operation - The operation

Returns:

The entities, possibly mutated

close

@PreDestroy
public void close()

Specified by:

close in interface AutoCloseable

getDataSource

@NonNull
public @NonNull DataSource getDataSource()

Specified by:

getDataSource in interface JdbcOperations

Returns:

The backing data source.

getConnection

@NonNull
public @NonNull Connection getConnection()

Description copied from interface: JdbcOperations

This method will return the currently active connection for the current transaction or throw an exception if no transaction is present.

Specified by:

getConnection in interface JdbcOperations

Returns:

The current connection for the active transaction.

execute

@NonNull
public <R> R execute(@NonNull
 @NonNull ConnectionCallback<R> callback)

Description copied from interface: JdbcOperations

Execute the given operation with the given callback.

Specified by:

execute in interface JdbcOperations

Type Parameters:

R - The result type

Parameters:

callback - The callback

Returns:

The result

prepareStatement

@NonNull
public <R> R prepareStatement(@NonNull
 @NonNull String sql,
 @NonNull
 @NonNull PreparedStatementCallback<R> callback)

Description copied from interface: JdbcOperations

Execute the given operation with the given callback.

Specified by:

prepareStatement in interface JdbcOperations

Type Parameters:

R - The result type

Parameters:

sql - The SQL

callback - The callback

Returns:

The result

entityStream

@NonNull
public <T> @NonNull Stream<T> entityStream(@NonNull
 @NonNull ResultSet resultSet,
 @NonNull
 @NonNull Class<T> rootEntity)

Description copied from interface: JdbcOperations

Map a result set to a stream of the given type.

Specified by:

entityStream in interface JdbcOperations

Type Parameters:

T - The generic type

Parameters:

resultSet - The result set

rootEntity - The entity type

Returns:

The stream

readEntity

@NonNull
public <E> E readEntity(@NonNull
 @NonNull String prefix,
 @NonNull
 @NonNull ResultSet resultSet,
 @NonNull
 @NonNull Class<E> type)
                 throws DataAccessException

Description copied from interface: JdbcOperations

Read an entity using the given prefix to be passes to result set lookups.

Specified by:

readEntity in interface JdbcOperations

Type Parameters:

E - The entity generic type

Parameters:

prefix - The prefix

resultSet - The result set

type - The entity type

Returns:

The entity result

Throws:

DataAccessException - if it is not possible read the result from the result set.

readDTO

@NonNull
public <E,
D> D readDTO(@NonNull
 @NonNull String prefix,
 @NonNull
 @NonNull ResultSet resultSet,
 @NonNull
 @NonNull Class<E> rootEntity,
 @NonNull
 @NonNull Class<D> dtoType)
                throws DataAccessException

Description copied from interface: JdbcOperations

Read an entity using the given prefix to be passes to result set lookups.

Specified by:

readDTO in interface JdbcOperations

Type Parameters:

E - The entity generic type

D - The DTO generic type

Parameters:

prefix - The prefix

resultSet - The result set

rootEntity - The entity type

dtoType - The DTO type. Must be annotated with Introspected

Returns:

The entity result

Throws:

DataAccessException - if it is not possible read the result from the result set.

entityStream

@NonNull
public <T> @NonNull Stream<T> entityStream(@NonNull
 @NonNull ResultSet resultSet,
 @Nullable
 @Nullable String prefix,
 @NonNull
 @NonNull Class<T> rootEntity)

Description copied from interface: JdbcOperations

Map a result set to a stream of the given type.

Specified by:

entityStream in interface JdbcOperations

Type Parameters:

T - The generic type

Parameters:

resultSet - The result set

prefix - The prefix to use for each column name that is mapped

rootEntity - The entity type

Returns:

The stream

isSupportsBatchInsert

public boolean isSupportsBatchInsert(DefaultJdbcRepositoryOperations.JdbcOperationContext jdbcOperationContext,
 RuntimePersistentEntity<?> persistentEntity)

Description copied from interface: SyncCascadeOperations.SyncCascadeOperationsHelper

Is supports batch insert.

Specified by:

isSupportsBatchInsert in interface SyncCascadeOperations.SyncCascadeOperationsHelper<DefaultJdbcRepositoryOperations.JdbcOperationContext>

Parameters:

jdbcOperationContext - The context

persistentEntity - The persistent entity

Returns:

True if supports