org.janusgraph.diskstorage.cql

Class CQLKeyColumnValueStore

java.lang.Object

org.janusgraph.diskstorage.cql.CQLKeyColumnValueStore

All Implemented Interfaces:

KeyColumnValueStore

public class CQLKeyColumnValueStore
extends Object
implements KeyColumnValueStore

An implementation of KeyColumnValueStore which stores the data in a CQL connected backend.

Field Summary

Fields

Modifier and Type	Field and Description
static String	COLUMN_BINDING
static String	COLUMN_COLUMN_NAME
static Function<? super Throwable,BackendException>	EXCEPTION_MAPPER
static String	KEY_BINDING
static String	KEY_COLUMN_NAME
static String	KEY_END_BINDING
static String	KEY_START_BINDING
static String	LIMIT_BINDING
static String	SLICE_END_BINDING
static String	SLICE_START_BINDING
static String	TIMESTAMP_BINDING
static String	TTL_BINDING
static String	TTL_COLUMN_NAME
static String	TTL_FUNCTION_NAME
static String	VALUE_BINDING
static String	VALUE_COLUMN_NAME
static String	WRITETIME_COLUMN_NAME
static String	WRITETIME_FUNCTION_NAME

Fields inherited from interface org.janusgraph.diskstorage.keycolumnvalue.KeyColumnValueStore

NO_ADDITIONS, NO_DELETIONS

Constructor Summary

Constructors

Constructor and Description
CQLKeyColumnValueStore(CQLStoreManager storeManager, String tableName, Configuration configuration, Runnable closer) Creates an instance of the KeyColumnValueStore that stores the data in a CQL backed table.

Method Summary

Modifier and Type	Method and Description
void	acquireLock(StaticBuffer key, StaticBuffer column, StaticBuffer expectedValue, StoreTransaction txh)
void	close()
com.datastax.oss.driver.api.core.cql.BatchableStatement<com.datastax.oss.driver.api.core.cql.BoundStatement>	deleteColumn(StaticBuffer key, StaticBuffer column)
com.datastax.oss.driver.api.core.cql.BatchableStatement<com.datastax.oss.driver.api.core.cql.BoundStatement>	deleteColumn(StaticBuffer key, StaticBuffer column, Long timestamp)
KeyIterator	getKeys(KeyRangeQuery query, StoreTransaction txh)
KeySlicesIterator	getKeys(MultiSlicesQuery queries, StoreTransaction txh)
KeyIterator	getKeys(SliceQuery query, StoreTransaction txh)
Map<SliceQuery,Map<StaticBuffer,EntryList>>	getMultiSlices(MultiKeysQueryGroups<StaticBuffer,SliceQuery> multiSliceQueriesForKeys, StoreTransaction txh)
String	getName()
EntryList	getSlice(KeySliceQuery query, StoreTransaction txh)
Map<StaticBuffer,EntryList>	getSlice(List<StaticBuffer> keys, SliceQuery query, StoreTransaction txh)
com.datastax.oss.driver.api.core.cql.BatchableStatement<com.datastax.oss.driver.api.core.cql.BoundStatement>	insertColumn(StaticBuffer key, Entry entry)
com.datastax.oss.driver.api.core.cql.BatchableStatement<com.datastax.oss.driver.api.core.cql.BoundStatement>	insertColumn(StaticBuffer key, Entry entry, Long timestamp)
void	mutate(StaticBuffer key, List<Entry> additions, List<StaticBuffer> deletions, StoreTransaction txh)

Methods inherited from class java.lang.Object

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

Field Detail

TTL_FUNCTION_NAME

public static final String TTL_FUNCTION_NAME

See Also:

Constant Field Values

WRITETIME_FUNCTION_NAME

public static final String WRITETIME_FUNCTION_NAME

See Also:

Constant Field Values

KEY_COLUMN_NAME

public static final String KEY_COLUMN_NAME

See Also:

Constant Field Values

COLUMN_COLUMN_NAME

public static final String COLUMN_COLUMN_NAME

See Also:

Constant Field Values

VALUE_COLUMN_NAME

public static final String VALUE_COLUMN_NAME

See Also:

Constant Field Values

WRITETIME_COLUMN_NAME

public static final String WRITETIME_COLUMN_NAME

See Also:

Constant Field Values

TTL_COLUMN_NAME

public static final String TTL_COLUMN_NAME

See Also:

Constant Field Values

KEY_BINDING

public static final String KEY_BINDING

See Also:

Constant Field Values

COLUMN_BINDING

public static final String COLUMN_BINDING

See Also:

Constant Field Values

VALUE_BINDING

public static final String VALUE_BINDING

See Also:

Constant Field Values

TIMESTAMP_BINDING

public static final String TIMESTAMP_BINDING

See Also:

Constant Field Values

TTL_BINDING

public static final String TTL_BINDING

See Also:

Constant Field Values

SLICE_START_BINDING

public static final String SLICE_START_BINDING

See Also:

Constant Field Values

SLICE_END_BINDING

public static final String SLICE_END_BINDING

See Also:

Constant Field Values

KEY_START_BINDING

public static final String KEY_START_BINDING

See Also:

Constant Field Values

KEY_END_BINDING

public static final String KEY_END_BINDING

See Also:

Constant Field Values

LIMIT_BINDING

public static final String LIMIT_BINDING

See Also:

Constant Field Values

EXCEPTION_MAPPER

public static final Function<? super Throwable,BackendException> EXCEPTION_MAPPER

Constructor Detail

CQLKeyColumnValueStore

public CQLKeyColumnValueStore(CQLStoreManager storeManager,
                              String tableName,
                              Configuration configuration,
                              Runnable closer)

Creates an instance of the KeyColumnValueStore that stores the data in a CQL backed table.

Parameters:

storeManager - the CQLStoreManager that maintains the list of CQLKeyColumnValueStores

tableName - the name of the database table for storing the key/column/values

configuration - data used in creating this store

closer - callback used to clean up references to this store in the store manager

Method Detail

close

public void close()
           throws BackendException

Specified by:

close in interface KeyColumnValueStore

Throws:

BackendException

getName

public String getName()

Specified by:

getName in interface KeyColumnValueStore

getSlice

public EntryList getSlice(KeySliceQuery query,
                          StoreTransaction txh)
                   throws BackendException

Specified by:

getSlice in interface KeyColumnValueStore

Throws:

BackendException

getSlice

public Map<StaticBuffer,EntryList> getSlice(List<StaticBuffer> keys,
                                            SliceQuery query,
                                            StoreTransaction txh)
                                     throws BackendException

Specified by:

getSlice in interface KeyColumnValueStore

Throws:

BackendException

getMultiSlices

public Map<SliceQuery,Map<StaticBuffer,EntryList>> getMultiSlices(MultiKeysQueryGroups<StaticBuffer,SliceQuery> multiSliceQueriesForKeys,
                                                                  StoreTransaction txh)
                                                           throws BackendException

Specified by:

getMultiSlices in interface KeyColumnValueStore

Throws:

BackendException

deleteColumn

public com.datastax.oss.driver.api.core.cql.BatchableStatement<com.datastax.oss.driver.api.core.cql.BoundStatement> deleteColumn(StaticBuffer key,
                                                                                                                                 StaticBuffer column)

deleteColumn

public com.datastax.oss.driver.api.core.cql.BatchableStatement<com.datastax.oss.driver.api.core.cql.BoundStatement> deleteColumn(StaticBuffer key,
                                                                                                                                 StaticBuffer column,
                                                                                                                                 Long timestamp)

insertColumn

public com.datastax.oss.driver.api.core.cql.BatchableStatement<com.datastax.oss.driver.api.core.cql.BoundStatement> insertColumn(StaticBuffer key,
                                                                                                                                 Entry entry)

insertColumn

public com.datastax.oss.driver.api.core.cql.BatchableStatement<com.datastax.oss.driver.api.core.cql.BoundStatement> insertColumn(StaticBuffer key,
                                                                                                                                 Entry entry,
                                                                                                                                 Long timestamp)

mutate

public void mutate(StaticBuffer key,
                   List<Entry> additions,
                   List<StaticBuffer> deletions,
                   StoreTransaction txh)
            throws BackendException

Specified by:

mutate in interface KeyColumnValueStore

Throws:

BackendException

acquireLock

public void acquireLock(StaticBuffer key,
                        StaticBuffer column,
                        StaticBuffer expectedValue,
                        StoreTransaction txh)
                 throws BackendException

Specified by:

acquireLock in interface KeyColumnValueStore

Throws:

BackendException

getKeys

public KeyIterator getKeys(KeyRangeQuery query,
                           StoreTransaction txh)
                    throws BackendException

Specified by:

getKeys in interface KeyColumnValueStore

Throws:

BackendException

getKeys

public KeyIterator getKeys(SliceQuery query,
                           StoreTransaction txh)
                    throws BackendException

Specified by:

getKeys in interface KeyColumnValueStore

Throws:

BackendException

getKeys

public KeySlicesIterator getKeys(MultiSlicesQuery queries,
                                 StoreTransaction txh)
                          throws BackendException

Specified by:

getKeys in interface KeyColumnValueStore

Throws:

BackendException