cz.o2.proxima.direct.core

Class DirectDataOperator

java.lang.Object

cz.o2.proxima.direct.core.DirectDataOperator

All Implemented Interfaces:

ContextProvider, DataOperator, java.lang.AutoCloseable

public class DirectDataOperator
extends java.lang.Object
implements DataOperator, ContextProvider

DataOperator implementation for direct accesses.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DirectDataOperator.DelegateDataAccessorFactory

Field Summary

Fields

Modifier and Type	Field and Description
private Context	context
private Factory<java.util.concurrent.ExecutorService>	executorFactory
private java.util.Map<AttributeFamilyDescriptor,DirectAttributeFamilyDescriptor>	familyMap AttributeFamilyDescriptor with associated DirectAttributeFamilyDescriptor.
private static java.lang.String	ID
private static java.lang.String	KW_CLASS
private DataAccessorLoader<DirectDataOperator,DataAccessor,DataAccessorFactory>	loader
private Repository	repo Repository.
private static java.util.concurrent.atomic.AtomicInteger	threadId
private static java.lang.String	THROUGHPUT_LIMITER_PREFIX
private java.util.Map<AttributeDescriptor<?>,OnlineAttributeWriter>	writers Cache of writers for all attributes.

Constructor Summary

Constructors

Constructor and Description
DirectDataOperator(Repository repo)

Method Summary

Modifier and Type	Method and Description
private void	addResolvedFamily(AttributeFamilyDescriptor family)
void	close() Close the operator and release all allocated resources.
private static Factory<java.util.concurrent.ExecutorService>	createExecutorFactory()
private java.util.List<AttributeFamilyDescriptor>	dependencyOrdered(java.util.stream.Stream<AttributeFamilyDescriptor> families) Create list of families ordered by dependencies between them (non-proxy first).
private DataAccessor	findAccessorFor(AttributeFamilyDescriptor desc)
java.util.Optional<DirectAttributeFamilyDescriptor>	findFamilyByName(java.lang.String name) Retrieve family by given name.
java.util.Optional<DataAccessorFactory>	getAccessorFactory(java.net.URI uri) Retrieve factory that first matches given uri.
java.util.stream.Stream<DirectAttributeFamilyDescriptor>	getAllFamilies() Retrieve all families with their direct representation.
java.util.Optional<BatchLogReader>	getBatchLogReader(AttributeDescriptor<?>... attrs) Retrieve CommitLogReader for given AttributeDescriptors.
java.util.Optional<BatchLogReader>	getBatchLogReader(java.util.Collection<AttributeDescriptor<?>> attrs) Retrieve CommitLogReader for given AttributeDescriptors.
java.util.Optional<CachedView>	getCachedView(AttributeDescriptor<?>... attrs) Retrieve CachedView for given AttributeDescriptors.
java.util.Optional<CachedView>	getCachedView(java.util.Collection<AttributeDescriptor<?>> attrs) Retrieve CachedView for given AttributeDescriptors.
java.util.Optional<CommitLogReader>	getCommitLogReader(AttributeDescriptor<?>... attrs) Retrieve CommitLogReader for given AttributeDescriptors.
java.util.Optional<CommitLogReader>	getCommitLogReader(java.util.Collection<AttributeDescriptor<?>> attrs) Retrieve CommitLogReader for given AttributeDescriptors.
Context	getContext() Retrieve Context that is used in all distributed operations.
java.util.Set<DirectAttributeFamilyDescriptor>	getFamiliesForAttribute(AttributeDescriptor<?> desc) Resolve all direct attribute representations of given attribute.
DirectAttributeFamilyDescriptor	getFamilyByName(java.lang.String name) Retrieve family by given name.
private java.util.Optional<DirectAttributeFamilyDescriptor>	getFamilyForAttributes(java.util.Collection<AttributeDescriptor<?>> attrs, UnaryFunction<DirectAttributeFamilyDescriptor,java.lang.Boolean> mask)
java.util.Optional<RandomAccessReader>	getRandomAccess(AttributeDescriptor<?>... attrs) Retrieve RandomAccessReader for given AttributeDescriptors.
java.util.Optional<RandomAccessReader>	getRandomAccess(java.util.Collection<AttributeDescriptor<?>> attrs) Retrieve RandomAccessReader for given AttributeDescriptors.
Repository	getRepository()
java.util.Optional<OnlineAttributeWriter>	getWriter(AttributeDescriptor<?> attr) Retrieve writer for given AttributeDescriptor.
void	reload()
java.util.Optional<DirectAttributeFamilyDescriptor>	resolve(AttributeFamilyDescriptor family) Optionally convert given family to direct representation.
DirectAttributeFamilyDescriptor	resolveRequired(AttributeFamilyDescriptor family) Convert given core family to direct representation.
DirectDataOperator	withExecutorFactory(Factory<java.util.concurrent.ExecutorService> factory) Explicitly specify ExecutorService to use when constructing threads.

Methods inherited from class java.lang.Object

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

Field Detail

THROUGHPUT_LIMITER_PREFIX

private static final java.lang.String THROUGHPUT_LIMITER_PREFIX

See Also:

Constant Field Values

KW_CLASS

private static final java.lang.String KW_CLASS

See Also:

Constant Field Values

threadId

private static final java.util.concurrent.atomic.AtomicInteger threadId

ID

private static final java.lang.String ID

repo

private final Repository repo

Repository.

familyMap

private final java.util.Map<AttributeFamilyDescriptor,DirectAttributeFamilyDescriptor> familyMap

AttributeFamilyDescriptor with associated DirectAttributeFamilyDescriptor.

writers

private final java.util.Map<AttributeDescriptor<?>,OnlineAttributeWriter> writers

Cache of writers for all attributes.

executorFactory

private Factory<java.util.concurrent.ExecutorService> executorFactory

context

private final Context context

loader

private final DataAccessorLoader<DirectDataOperator,DataAccessor,DataAccessorFactory> loader

Constructor Detail

DirectDataOperator

DirectDataOperator(Repository repo)

Method Detail

createExecutorFactory

private static Factory<java.util.concurrent.ExecutorService> createExecutorFactory()

withExecutorFactory

public DirectDataOperator withExecutorFactory(Factory<java.util.concurrent.ExecutorService> factory)

Explicitly specify ExecutorService to use when constructing threads.

Parameters:

factory - the factory for ExecutorService

Returns:

this

reload

public final void reload()

Specified by:

reload in interface DataOperator

dependencyOrdered

private java.util.List<AttributeFamilyDescriptor> dependencyOrdered(java.util.stream.Stream<AttributeFamilyDescriptor> families)

Create list of families ordered by dependencies between them (non-proxy first).

addResolvedFamily

private void addResolvedFamily(AttributeFamilyDescriptor family)

findAccessorFor

private DataAccessor findAccessorFor(AttributeFamilyDescriptor desc)

getContext

public Context getContext()

Retrieve Context that is used in all distributed operations.

Specified by:

getContext in interface ContextProvider

Returns:

the serializable context

resolveRequired

public DirectAttributeFamilyDescriptor resolveRequired(AttributeFamilyDescriptor family)

Convert given core family to direct representation.

Parameters:

family - the family to convert

Returns:

the converted family

resolve

public java.util.Optional<DirectAttributeFamilyDescriptor> resolve(AttributeFamilyDescriptor family)

Optionally convert given family to direct representation.

Parameters:

family - the family to convert

Returns:

the optionally converted family

getAccessorFactory

public java.util.Optional<DataAccessorFactory> getAccessorFactory(java.net.URI uri)

Retrieve factory that first matches given uri.

Parameters:

uri - the URI to search factory for

Returns:

optional DataAccessorFactory for specified URI

getWriter

public java.util.Optional<OnlineAttributeWriter> getWriter(AttributeDescriptor<?> attr)

Retrieve writer for given AttributeDescriptor.

Parameters:

attr - the attribute to find writer for

Returns:

optional writer

getCommitLogReader

public java.util.Optional<CommitLogReader> getCommitLogReader(java.util.Collection<AttributeDescriptor<?>> attrs)

Retrieve CommitLogReader for given AttributeDescriptors.

Parameters:

attrs - the attributes to find commit log reader for

Returns:

optional commit log reader

getCommitLogReader

@SafeVarargs
public final java.util.Optional<CommitLogReader> getCommitLogReader(AttributeDescriptor<?>... attrs)

Retrieve CommitLogReader for given AttributeDescriptors.

Parameters:

attrs - the attributes to find commit log reader for

Returns:

optional commit log reader

getBatchLogReader

public java.util.Optional<BatchLogReader> getBatchLogReader(java.util.Collection<AttributeDescriptor<?>> attrs)

Retrieve CommitLogReader for given AttributeDescriptors.

Parameters:

attrs - the attributes to find commit log reader for

Returns:

optional commit log reader

getBatchLogReader

@SafeVarargs
public final java.util.Optional<BatchLogReader> getBatchLogReader(AttributeDescriptor<?>... attrs)

Retrieve CommitLogReader for given AttributeDescriptors.

Parameters:

attrs - the attributes to find commit log reader for

Returns:

optional commit log reader

getCachedView

public java.util.Optional<CachedView> getCachedView(java.util.Collection<AttributeDescriptor<?>> attrs)

Retrieve CachedView for given AttributeDescriptors.

Parameters:

attrs - the attributes to find cached view for

Returns:

optional cached view

getCachedView

@SafeVarargs
public final java.util.Optional<CachedView> getCachedView(AttributeDescriptor<?>... attrs)

Retrieve CachedView for given AttributeDescriptors.

Parameters:

attrs - the attributes to find cached view for

Returns:

optional cached view

getRandomAccess

public java.util.Optional<RandomAccessReader> getRandomAccess(java.util.Collection<AttributeDescriptor<?>> attrs)

Retrieve RandomAccessReader for given AttributeDescriptors.

Parameters:

attrs - the attributes to find radom access reader for

Returns:

optional random access reader

getRandomAccess

@SafeVarargs
public final java.util.Optional<RandomAccessReader> getRandomAccess(AttributeDescriptor<?>... attrs)

Retrieve RandomAccessReader for given AttributeDescriptors.

Parameters:

attrs - the attributes to find radom access reader for

Returns:

optional random access reader

getFamilyForAttributes

private java.util.Optional<DirectAttributeFamilyDescriptor> getFamilyForAttributes(java.util.Collection<AttributeDescriptor<?>> attrs,
                                                                                   UnaryFunction<DirectAttributeFamilyDescriptor,java.lang.Boolean> mask)

close

public void close()

Close the operator and release all allocated resources.

Specified by:

close in interface DataOperator

Specified by:

close in interface java.lang.AutoCloseable

getFamiliesForAttribute

public java.util.Set<DirectAttributeFamilyDescriptor> getFamiliesForAttribute(AttributeDescriptor<?> desc)

Resolve all direct attribute representations of given attribute.

Parameters:

desc - descriptor of attribute

Returns:

the set of all direct attribute representations

getAllFamilies

public java.util.stream.Stream<DirectAttributeFamilyDescriptor> getAllFamilies()

Retrieve all families with their direct representation.

Returns:

stream of all DirectAttributeFamilyDescriptors.

getFamilyByName

public DirectAttributeFamilyDescriptor getFamilyByName(java.lang.String name)

Retrieve family by given name.

Parameters:

name - name of the family to search for

Returns:

DirectAttributeFamilyDescriptor for given family

Throws:

java.lang.IllegalArgumentException - when family not found

findFamilyByName

public java.util.Optional<DirectAttributeFamilyDescriptor> findFamilyByName(java.lang.String name)

Retrieve family by given name.

Parameters:

name - name of the family to search for

Returns:

Optional of DirectAttributeFamilyDescriptor for given family of Optional.empty()

getRepository

public Repository getRepository()

Specified by:

getRepository in interface DataOperator