* Licensed to the Apache Software Foundation (ASF) under one

* or more contributor license agreements.  See the NOTICE file

* distributed with this work for additional information

* regarding copyright ownership.  The ASF licenses this file

* to you under the Apache License, Version 2.0 (the

* "License"); you may not use this file except in compliance

* with the License.  You may obtain a copy of the License at

*

*     http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

* This class can be tricky to modify. Please read http://wiki.apache.org/cassandra/ConfigurationNotes for how to do so safely.

*/

    private static final Logger logger = LoggerFactory.getLogger(CFMetaData.class);

    public final static double DEFAULT_READ_REPAIR_CHANCE = 0.0;

    public final static double DEFAULT_DCLOCAL_READ_REPAIR_CHANCE = 0.1;

    public final static int DEFAULT_GC_GRACE_SECONDS = 864000;

    public final static int DEFAULT_MIN_COMPACTION_THRESHOLD = 4;

    public final static int DEFAULT_MAX_COMPACTION_THRESHOLD = 32;

    public final static Class<? extends AbstractCompactionStrategy> DEFAULT_COMPACTION_STRATEGY_CLASS = SizeTieredCompactionStrategy.class;

    public final static CachingOptions DEFAULT_CACHING_STRATEGY = CachingOptions.KEYS_ONLY;

    public final static int DEFAULT_DEFAULT_TIME_TO_LIVE = 0;

    public final static SpeculativeRetry DEFAULT_SPECULATIVE_RETRY = new SpeculativeRetry(SpeculativeRetry.RetryType.PERCENTILE, 0.99);

    public final static int DEFAULT_MIN_INDEX_INTERVAL = 128;

    public final static int DEFAULT_MAX_INDEX_INTERVAL = 2048;

    // Note that this is the default only for user created tables

    public final static String DEFAULT_COMPRESSOR = LZ4Compressor.class.getCanonicalName();

    // Note that this need to come *before* any CFMetaData is defined so before the compile below.

    private static final Comparator<ColumnDefinition> regularColumnComparator = new Comparator<ColumnDefinition>()

    {

        public int compare(ColumnDefinition def1, ColumnDefinition def2)

        {

            return ByteBufferUtil.compareUnsigned(def1.name.bytes, def2.name.bytes);

        }

    };

    public static final CFMetaData IndexCf = compile("CREATE TABLE \"" + SystemKeyspace.INDEX_CF + "\" ("

                                                     + "table_name text,"

                                                     + "index_name text,"

                                                     + "PRIMARY KEY (table_name, index_name)"

                                                     + ") WITH COMPACT STORAGE AND COMMENT='indexes that have been completed'");

    public static final CFMetaData CounterIdCf = compile("CREATE TABLE \"" + SystemKeyspace.COUNTER_ID_CF + "\" ("

                                                         + "key text,"

                                                         + "id timeuuid,"

                                                         + "PRIMARY KEY (key, id)"

                                                         + ") WITH COMPACT STORAGE AND COMMENT='counter node IDs'");

    public static final CFMetaData SchemaKeyspacesCf = compile("CREATE TABLE " + SystemKeyspace.SCHEMA_KEYSPACES_CF + " ("

                                                               + "keyspace_name text PRIMARY KEY,"

                                                               + "durable_writes boolean,"

                                                               + "strategy_class text,"

                                                               + "strategy_options text"

                                                               + ") WITH COMPACT STORAGE AND COMMENT='keyspace definitions' AND gc_grace_seconds=8640");

    public static final CFMetaData SchemaColumnFamiliesCf = compile("CREATE TABLE " + SystemKeyspace.SCHEMA_COLUMNFAMILIES_CF + " ("

                                                                    + "keyspace_name text,"

                                                                    + "columnfamily_name text,"

                                                                    + "cf_id uuid," // post-2.1 UUID cfid

                                                                    + "type text,"

                                                                    + "comparator text,"

                                                                    + "subcomparator text,"

                                                                    + "comment text,"

                                                                    + "read_repair_chance double,"

                                                                    + "local_read_repair_chance double,"

                                                                    + "gc_grace_seconds int,"

                                                                    + "default_validator text,"

                                                                    + "key_validator text,"

                                                                    + "min_compaction_threshold int,"

                                                                    + "max_compaction_threshold int,"

                                                                    + "memtable_flush_period_in_ms int,"

                                                                    + "key_aliases text,"

                                                                    + "bloom_filter_fp_chance double,"

                                                                    + "caching text,"

                                                                    + "default_time_to_live int,"

                                                                    + "compaction_strategy_class text,"

                                                                    + "compression_parameters text,"

                                                                    + "value_alias text,"

                                                                    + "column_aliases text,"

                                                                    + "compaction_strategy_options text,"

                                                                    + "speculative_retry text,"

                                                                    + "populate_io_cache_on_flush boolean,"

                                                                    + "index_interval int,"

                                                                    + "min_index_interval int,"

                                                                    + "max_index_interval int,"

                                                                    + "dropped_columns map<text, bigint>,"

                                                                    + "rows_per_partition_to_cache text,"

                                                                    + "PRIMARY KEY (keyspace_name, columnfamily_name)"

                                                                    + ") WITH COMMENT='ColumnFamily definitions' AND gc_grace_seconds=8640");

    public static final CFMetaData SchemaColumnsCf = compile("CREATE TABLE " + SystemKeyspace.SCHEMA_COLUMNS_CF + " ("

                                                             + "keyspace_name text,"

                                                             + "columnfamily_name text,"

                                                             + "column_name text,"

                                                             + "validator text,"

                                                             + "index_type text,"

                                                             + "index_options text,"

                                                             + "index_name text,"

                                                             + "component_index int,"

                                                             + "type text,"

                                                             + "PRIMARY KEY(keyspace_name, columnfamily_name, column_name)"

                                                             + ") WITH COMMENT='ColumnFamily column attributes' AND gc_grace_seconds=8640");

    public static final CFMetaData SchemaTriggersCf = compile("CREATE TABLE " + SystemKeyspace.SCHEMA_TRIGGERS_CF + " ("

                                                              + "keyspace_name text,"

                                                              + "columnfamily_name text,"

                                                              + "trigger_name text,"

                                                              + "trigger_options map<text, text>,"

                                                              + "PRIMARY KEY (keyspace_name, columnfamily_name, trigger_name)"

                                                              + ") WITH COMMENT='triggers metadata table'");

    public static final CFMetaData SchemaUserTypesCf = compile("CREATE TABLE " + SystemKeyspace.SCHEMA_USER_TYPES_CF + " ("

                                                               + "keyspace_name text,"

                                                               + "type_name text,"

                                                               + "field_names list<text>,"

                                                               + "field_types list<text>,"

                                                               + "PRIMARY KEY (keyspace_name, type_name)"

                                                               + ") WITH COMMENT='Defined user types' AND gc_grace_seconds=8640");

    public static final CFMetaData HintsCf = compile("CREATE TABLE " + SystemKeyspace.HINTS_CF + " ("

                                                     + "target_id uuid,"

                                                     + "hint_id timeuuid,"

                                                     + "message_version int,"

                                                     + "mutation blob,"

                                                     + "PRIMARY KEY (target_id, hint_id, message_version)"

                                                     + ") WITH COMPACT STORAGE "

                                                     + "AND COMPACTION={'class' : 'SizeTieredCompactionStrategy', 'enabled' : false} "

                                                     + "AND COMMENT='hints awaiting delivery'"

                                                     + "AND gc_grace_seconds=0");

    public static final CFMetaData PeersCf = compile("CREATE TABLE " + SystemKeyspace.PEERS_CF + " ("

                                                     + "peer inet PRIMARY KEY,"

                                                     + "host_id uuid,"

                                                     + "tokens set<varchar>,"

                                                     + "schema_version uuid,"

                                                     + "release_version text,"

                                                     + "rpc_address inet,"

                                                     + "preferred_ip inet,"

                                                     + "data_center text,"

                                                     + "rack text"

                                                     + ") WITH COMMENT='known peers in the cluster'");

    public static final CFMetaData PeerEventsCf = compile("CREATE TABLE " + SystemKeyspace.PEER_EVENTS_CF + " ("

                                                          + "peer inet PRIMARY KEY,"

                                                          + "hints_dropped map<uuid, int>"

                                                          + ") WITH COMMENT='cf contains events related to peers'");

    public static final CFMetaData LocalCf = compile("CREATE TABLE " + SystemKeyspace.LOCAL_CF + " ("

                                                     + "key text PRIMARY KEY,"

                                                     + "tokens set<varchar>,"

                                                     + "cluster_name text,"

                                                     + "gossip_generation int,"

                                                     + "bootstrapped text,"

                                                     + "host_id uuid,"

                                                     + "release_version text,"

                                                     + "thrift_version text,"

                                                     + "cql_version text,"

                                                     + "native_protocol_version text,"

                                                     + "data_center text,"

                                                     + "rack text,"

                                                     + "partitioner text,"

                                                     + "schema_version uuid,"

                                                     + "truncated_at map<uuid, blob>"

                                                     + ") WITH COMMENT='information about the local node'");

    public static final CFMetaData TraceSessionsCf = compile("CREATE TABLE " + Tracing.SESSIONS_CF + " ("

                                                             + "session_id uuid PRIMARY KEY,"

                                                             + "coordinator inet,"

                                                             + "request text,"

                                                             + "started_at timestamp,"

                                                             + "parameters map<text, text>,"

                                                             + "duration int"

                                                             + ") WITH COMMENT='traced sessions'",

                                                             Tracing.TRACE_KS);

    public static final CFMetaData TraceEventsCf = compile("CREATE TABLE " + Tracing.EVENTS_CF + " ("

                                                           + "session_id uuid,"

                                                           + "event_id timeuuid,"

                                                           + "source inet,"

                                                           + "thread text,"

                                                           + "activity text,"

                                                           + "source_elapsed int,"

                                                           + "PRIMARY KEY (session_id, event_id)"

                                                           + ")",

                                                           Tracing.TRACE_KS);

    public static final CFMetaData BatchlogCf = compile("CREATE TABLE " + SystemKeyspace.BATCHLOG_CF + " ("

                                                        + "id uuid PRIMARY KEY,"

                                                        + "written_at timestamp,"

                                                        + "data blob,"

                                                        + "version int,"

                                                        + ") WITH COMMENT='uncommited batches' AND gc_grace_seconds=0 "

                                                        + "AND COMPACTION={'class' : 'SizeTieredCompactionStrategy', 'min_threshold' : 2}");

    public static final CFMetaData RangeXfersCf = compile("CREATE TABLE " + SystemKeyspace.RANGE_XFERS_CF + " ("

                                                          + "token_bytes blob PRIMARY KEY,"

                                                          + "requested_at timestamp"

                                                          + ") WITH COMMENT='ranges requested for transfer here'");

    public static final CFMetaData CompactionLogCf = compile("CREATE TABLE " + SystemKeyspace.COMPACTION_LOG + " ("

                                                             + "id uuid PRIMARY KEY,"

                                                             + "keyspace_name text,"

                                                             + "columnfamily_name text,"

                                                             + "inputs set<int>"

                                                             + ") WITH COMMENT='unfinished compactions'");

    public static final CFMetaData PaxosCf = compile("CREATE TABLE " + SystemKeyspace.PAXOS_CF + " ("

                                                     + "row_key blob,"

                                                     + "cf_id UUID,"

                                                     + "in_progress_ballot timeuuid,"

                                                     + "proposal_ballot timeuuid,"

                                                     + "proposal blob,"

                                                     + "most_recent_commit_at timeuuid,"

                                                     + "most_recent_commit blob,"

                                                     + "PRIMARY KEY (row_key, cf_id)"

                                                     + ") WITH COMMENT='in-progress paxos proposals'");

    public static final CFMetaData SSTableActivityCF = compile("CREATE TABLE " + SystemKeyspace.SSTABLE_ACTIVITY_CF + " ("

                                                               + "keyspace_name text,"

                                                               + "columnfamily_name text,"

                                                               + "generation int,"

                                                               + "rate_15m double,"

                                                               + "rate_120m double,"

                                                               + "PRIMARY KEY ((keyspace_name, columnfamily_name, generation))"

                                                               + ") WITH COMMENT='historic sstable read rates'");

    public static final CFMetaData CompactionHistoryCf = compile("CREATE TABLE " + SystemKeyspace.COMPACTION_HISTORY_CF + " ("

                                                                 + "id uuid,"

                                                                 + "keyspace_name text,"

                                                                 + "columnfamily_name text,"

                                                                 + "compacted_at timestamp,"

                                                                 + "bytes_in bigint,"

                                                                 + "bytes_out bigint,"

                                                                 + "rows_merged map<int, bigint>,"

                                                                 + "PRIMARY KEY (id)"

                                                                 + ") WITH COMMENT='show all compaction history' AND DEFAULT_TIME_TO_LIVE=604800");

    {

        public enum RetryType

        {

            NONE, CUSTOM, PERCENTILE, ALWAYS

        }

        public final RetryType type;

        public final double value;

        private SpeculativeRetry(RetryType type, double value)

        {

            this.type = type;

            this.value = value;

        }

        public static SpeculativeRetry fromString(String retry) throws ConfigurationException

        {

            String name = retry.toUpperCase();

            try

            {

                if (name.endsWith(RetryType.PERCENTILE.toString()))

                {

                    double value = Double.parseDouble(name.substring(0, name.length() - 10));

                    if (value > 100 || value < 0)

                        throw new ConfigurationException("PERCENTILE should be between 0 and 100");

                    return new SpeculativeRetry(RetryType.PERCENTILE, (value / 100));

                }

                else if (name.endsWith("MS"))

                {

                    double value = Double.parseDouble(name.substring(0, name.length() - 2));

                    return new SpeculativeRetry(RetryType.CUSTOM, value);

                }

                else

                {

                    return new SpeculativeRetry(RetryType.valueOf(name), 0);

                }

            }

            catch (IllegalArgumentException e)

            {

                // ignore to throw the below exception.

            }

            throw new ConfigurationException("invalid speculative_retry type: " + retry);

        }

        @Override

        public boolean equals(Object obj)

        {

            if (!(obj instanceof SpeculativeRetry))

                return false;

            SpeculativeRetry rhs = (SpeculativeRetry) obj;

            return Objects.equal(type, rhs.type) && Objects.equal(value, rhs.value);

        }

        @Override

        public int hashCode()

        {

            return Objects.hashCode(type, value);

        }

        @Override

        public String toString()

        {

            switch (type)

            {

            case PERCENTILE:

                // TODO switch to BigDecimal so round-tripping isn't lossy

                return (value * 100) + "PERCENTILE";

            case CUSTOM:

                return value + "ms";

            default:

                return type.toString();

            }

        }

    }

    //REQUIRED

    public final UUID cfId;                           // internal id, never exposed to user

    public final String ksName;                       // name of keyspace

    public final String cfName;                       // name of this column family

    public final ColumnFamilyType cfType;             // standard, super

    public volatile CellNameType comparator;          // bytes, long, timeuuid, utf8, etc.

    //OPTIONAL

    private volatile String comment = "";

    private volatile double readRepairChance = DEFAULT_READ_REPAIR_CHANCE;

    private volatile double dcLocalReadRepairChance = DEFAULT_DCLOCAL_READ_REPAIR_CHANCE;

    private volatile int gcGraceSeconds = DEFAULT_GC_GRACE_SECONDS;

    private volatile AbstractType<?> defaultValidator = BytesType.instance;

    private volatile AbstractType<?> keyValidator = BytesType.instance;

    private volatile int minCompactionThreshold = DEFAULT_MIN_COMPACTION_THRESHOLD;

    private volatile int maxCompactionThreshold = DEFAULT_MAX_COMPACTION_THRESHOLD;

    private volatile Double bloomFilterFpChance = null;

    private volatile CachingOptions caching = DEFAULT_CACHING_STRATEGY;

    private volatile int minIndexInterval = DEFAULT_MIN_INDEX_INTERVAL;

    private volatile int maxIndexInterval = DEFAULT_MAX_INDEX_INTERVAL;

    private volatile int memtableFlushPeriod = 0;

    private volatile int defaultTimeToLive = DEFAULT_DEFAULT_TIME_TO_LIVE;

    private volatile SpeculativeRetry speculativeRetry = DEFAULT_SPECULATIVE_RETRY;

    private volatile Map<ColumnIdentifier, Long> droppedColumns = new HashMap<>();

    private volatile Map<String, TriggerDefinition> triggers = new HashMap<>();

    private volatile boolean isPurged = false;

    /*

     * All CQL3 columns definition are stored in the columnMetadata map.

     * On top of that, we keep separated collection of each kind of definition, to

     * 1) allow easy access to each kind and 2) for the partition key and

     * clustering key ones, those list are ordered by the "component index" of the

     * elements.

     */

    public static final String DEFAULT_KEY_ALIAS = "key";

    public static final String DEFAULT_COLUMN_ALIAS = "column";

    public static final String DEFAULT_VALUE_ALIAS = "value";

    private volatile Map<ByteBuffer, ColumnDefinition> columnMetadata = new HashMap<>();

    private volatile List<ColumnDefinition> partitionKeyColumns;  // Always of size keyValidator.componentsCount, null padded if necessary

    private volatile List<ColumnDefinition> clusteringColumns;    // Of size comparator.componentsCount or comparator.componentsCount -1, null padded if necessary

    private volatile SortedSet<ColumnDefinition> regularColumns;  // We use a sorted set so iteration is of predictable order (for SELECT for instance)

    private volatile SortedSet<ColumnDefinition> staticColumns;   // Same as above

    private volatile ColumnDefinition compactValueColumn;

    public volatile Class<? extends AbstractCompactionStrategy> compactionStrategyClass = DEFAULT_COMPACTION_STRATEGY_CLASS;

    public volatile Map<String, String> compactionStrategyOptions = new HashMap<>();

    public volatile CompressionParameters compressionParameters = new CompressionParameters(null);

    // attribute setters that return the modified CFMetaData instance

    public CFMetaData comment(String prop) { comment = Strings.nullToEmpty(prop); return this;}

    public CFMetaData readRepairChance(double prop) {readRepairChance = prop; return this;}

    public CFMetaData dcLocalReadRepairChance(double prop) {dcLocalReadRepairChance = prop; return this;}

    public CFMetaData gcGraceSeconds(int prop) {gcGraceSeconds = prop; return this;}

    public CFMetaData defaultValidator(AbstractType<?> prop) {defaultValidator = prop; return this;}

    public CFMetaData keyValidator(AbstractType<?> prop) {keyValidator = prop; return this;}

    public CFMetaData minCompactionThreshold(int prop) {minCompactionThreshold = prop; return this;}

    public CFMetaData maxCompactionThreshold(int prop) {maxCompactionThreshold = prop; return this;}

    public CFMetaData compactionStrategyClass(Class<? extends AbstractCompactionStrategy> prop) {compactionStrategyClass = prop; return this;}

    public CFMetaData compactionStrategyOptions(Map<String, String> prop) {compactionStrategyOptions = prop; return this;}

    public CFMetaData compressionParameters(CompressionParameters prop) {compressionParameters = prop; return this;}

    public CFMetaData bloomFilterFpChance(Double prop) {bloomFilterFpChance = prop; return this;}

    public CFMetaData caching(CachingOptions prop) {caching = prop; return this;}

    public CFMetaData minIndexInterval(int prop) {minIndexInterval = prop; return this;}

    public CFMetaData maxIndexInterval(int prop) {maxIndexInterval = prop; return this;}

    public CFMetaData memtableFlushPeriod(int prop) {memtableFlushPeriod = prop; return this;}

    public CFMetaData defaultTimeToLive(int prop) {defaultTimeToLive = prop; return this;}

    public CFMetaData speculativeRetry(SpeculativeRetry prop) {speculativeRetry = prop; return this;}

    public CFMetaData droppedColumns(Map<ColumnIdentifier, Long> cols) {droppedColumns = cols; return this;}

    public CFMetaData triggers(Map<String, TriggerDefinition> prop) {triggers = prop; return this;}

    /**

     * Create new ColumnFamily metadata with generated random ID.

     * When loading from existing schema, use CFMetaData

     *

     * @param keyspace keyspace name

     * @param name column family name

     * @param comp default comparator

     */

    public CFMetaData(String keyspace, String name, ColumnFamilyType type, CellNameType comp)

    {

        this(keyspace, name, type, comp, UUIDGen.getTimeUUID());

    }

    private CFMetaData(String keyspace, String name, ColumnFamilyType type, CellNameType comp, UUID id)

    {

        cfId = id;

        ksName = keyspace;

        cfName = name;

        cfType = type;

        comparator = comp;

    }

    public static CFMetaData denseCFMetaData(String keyspace, String name, AbstractType<?> comp, AbstractType<?> subcc)

    {

        CellNameType cellNameType = CellNames.fromAbstractType(makeRawAbstractType(comp, subcc), true);

        return new CFMetaData(keyspace, name, subcc == null ? ColumnFamilyType.Standard : ColumnFamilyType.Super, cellNameType);

    }

    public static CFMetaData sparseCFMetaData(String keyspace, String name, AbstractType<?> comp)

    {

        CellNameType cellNameType = CellNames.fromAbstractType(comp, false);

        return new CFMetaData(keyspace, name, ColumnFamilyType.Standard, cellNameType);

    }

    public static CFMetaData denseCFMetaData(String keyspace, String name, AbstractType<?> comp)

    {

        return denseCFMetaData(keyspace, name, comp, null);

    }

    private static AbstractType<?> makeRawAbstractType(AbstractType<?> comparator, AbstractType<?> subComparator)

    {

        return subComparator == null ? comparator : CompositeType.getInstance(Arrays.asList(comparator, subComparator));

    }

    public Map<String, TriggerDefinition> getTriggers()

    {

        return triggers;

    }

    private static CFMetaData compile(String cql)

    {

        return compile(cql, Keyspace.SYSTEM_KS);

    }

    @VisibleForTesting

    public static CFMetaData compile(String cql, String keyspace)

    {

        try

        {

            CFStatement parsed = (CFStatement)QueryProcessor.parseStatement(cql);

            parsed.prepareKeyspace(keyspace);

            CreateTableStatement statement = (CreateTableStatement) parsed.prepare().statement;

            CFMetaData cfm = newSystemMetadata(keyspace, statement.columnFamily(), "", statement.comparator);

            statement.applyPropertiesTo(cfm);

            return cfm.rebuild();

        }

        catch (RequestValidationException e)

        {

            throw new RuntimeException(e);

        }

    }

    /**

     * Generates deterministic UUID from keyspace/columnfamily name pair.

     * This is used to generate the same UUID for C* version < 2.1

     *

     * Since 2.1, this is only used for system columnfamilies and tests.

     */

    public static UUID generateLegacyCfId(String ksName, String cfName)

    {

        return UUID.nameUUIDFromBytes(ArrayUtils.addAll(ksName.getBytes(), cfName.getBytes()));

    }

    private static CFMetaData newSystemMetadata(String keyspace, String cfName, String comment, CellNameType comparator)

    {

        return new CFMetaData(keyspace, cfName, ColumnFamilyType.Standard, comparator, generateLegacyCfId(keyspace, cfName))

                             .comment(comment)

                             .readRepairChance(0)

                             .dcLocalReadRepairChance(0)

                             .gcGraceSeconds(0)

                             .memtableFlushPeriod(3600 * 1000);

    }

    /**

     * Creates CFMetaData for secondary index CF.

     * Secondary index CF has the same CF ID as parent's.

     *

     * @param parent Parent CF where secondary index is created

     * @param info Column definition containing secondary index definition

     * @param indexComparator Comparator for secondary index

     * @return CFMetaData for secondary index

     */

    public static CFMetaData newIndexMetadata(CFMetaData parent, ColumnDefinition info, CellNameType indexComparator)

    {

        // Depends on parent's cache setting, turn on its index CF's cache.

        // Row caching is never enabled; see CASSANDRA-5732

        CachingOptions indexCaching = parent.getCaching().keyCache.isEnabled()

                             ? CachingOptions.KEYS_ONLY

                             : CachingOptions.NONE;

        return new CFMetaData(parent.ksName, parent.indexColumnFamilyName(info), ColumnFamilyType.Standard, indexComparator, parent.cfId)

                             .keyValidator(info.type)

                             .readRepairChance(0.0)

                             .dcLocalReadRepairChance(0.0)

                             .gcGraceSeconds(0)

                             .caching(indexCaching)

                             .speculativeRetry(parent.speculativeRetry)

                             .compactionStrategyClass(parent.compactionStrategyClass)

                             .compactionStrategyOptions(parent.compactionStrategyOptions)

                             .reloadSecondaryIndexMetadata(parent)

                             .rebuild();

    }

    public CFMetaData reloadSecondaryIndexMetadata(CFMetaData parent)

    {

        minCompactionThreshold(parent.minCompactionThreshold);

        maxCompactionThreshold(parent.maxCompactionThreshold);

        compactionStrategyClass(parent.compactionStrategyClass);

        compactionStrategyOptions(parent.compactionStrategyOptions);

        compressionParameters(parent.compressionParameters);

        return this;

    }

    public CFMetaData copy()

    {

        return copyOpts(new CFMetaData(ksName, cfName, cfType, comparator, cfId), this);

    }

    /**

     * Clones the CFMetaData, but sets a different cfId

     *

     * @param newCfId the cfId for the cloned CFMetaData

     * @return the cloned CFMetaData instance with the new cfId

     */

    public CFMetaData copy(UUID newCfId)

    {

        return copyOpts(new CFMetaData(ksName, cfName, cfType, comparator, newCfId), this);

    }

    static CFMetaData copyOpts(CFMetaData newCFMD, CFMetaData oldCFMD)

    {

        List<ColumnDefinition> clonedColumns = new ArrayList<>(oldCFMD.allColumns().size());

        for (ColumnDefinition cd : oldCFMD.allColumns())

            clonedColumns.add(cd.copy());

        return newCFMD.addAllColumnDefinitions(clonedColumns)

                      .comment(oldCFMD.comment)

                      .readRepairChance(oldCFMD.readRepairChance)

                      .dcLocalReadRepairChance(oldCFMD.dcLocalReadRepairChance)

                      .gcGraceSeconds(oldCFMD.gcGraceSeconds)

                      .defaultValidator(oldCFMD.defaultValidator)

                      .keyValidator(oldCFMD.keyValidator)

                      .minCompactionThreshold(oldCFMD.minCompactionThreshold)

                      .maxCompactionThreshold(oldCFMD.maxCompactionThreshold)

                      .compactionStrategyClass(oldCFMD.compactionStrategyClass)

                      .compactionStrategyOptions(new HashMap<>(oldCFMD.compactionStrategyOptions))

                      .compressionParameters(oldCFMD.compressionParameters.copy())

                      .bloomFilterFpChance(oldCFMD.bloomFilterFpChance)

                      .caching(oldCFMD.caching)

                      .defaultTimeToLive(oldCFMD.defaultTimeToLive)

                      .minIndexInterval(oldCFMD.minIndexInterval)

                      .maxIndexInterval(oldCFMD.maxIndexInterval)

                      .speculativeRetry(oldCFMD.speculativeRetry)

                      .memtableFlushPeriod(oldCFMD.memtableFlushPeriod)

                      .droppedColumns(new HashMap<>(oldCFMD.droppedColumns))

                      .triggers(new HashMap<>(oldCFMD.triggers))

                      .rebuild();

    }

    /**

     * generate a column family name for an index corresponding to the given column.

     * This is NOT the same as the index's name! This is only used in sstable filenames and is not exposed to users.

     *

     * @param info A definition of the column with index

     *

     * @return name of the index ColumnFamily

     */

    public String indexColumnFamilyName(ColumnDefinition info)

    {

        // TODO simplify this when info.index_name is guaranteed to be set

        return cfName + Directories.SECONDARY_INDEX_NAME_SEPARATOR + (info.getIndexName() == null ? ByteBufferUtil.bytesToHex(info.name.bytes) : info.getIndexName());

    }

    public String getComment()

    {

        return comment;

    }

    public boolean isSuper()

    {

        return cfType == ColumnFamilyType.Super;

    }

    public double getReadRepairChance()

    {

        return readRepairChance;

    }

    public double getDcLocalReadRepair()

    {

        return dcLocalReadRepairChance;

    }

    public ReadRepairDecision newReadRepairDecision()

    {

        double chance = FBUtilities.threadLocalRandom().nextDouble();

        if (getReadRepairChance() > chance)

            return ReadRepairDecision.GLOBAL;

        if (getDcLocalReadRepair() > chance)

            return ReadRepairDecision.DC_LOCAL;

        return ReadRepairDecision.NONE;

    }

    public int getGcGraceSeconds()

    {

        return gcGraceSeconds;

    }

    public AbstractType<?> getDefaultValidator()

    {

        return defaultValidator;

    }

    public AbstractType<?> getKeyValidator()

    {

        return keyValidator;

    }

    public Integer getMinCompactionThreshold()

    {

        return minCompactionThreshold;

    }

    public Integer getMaxCompactionThreshold()

    {

        return maxCompactionThreshold;

    }

    // Used by CQL2 only.

    public String getCQL2KeyName()

    {

        if (partitionKeyColumns.size() > 1)

            throw new IllegalStateException("Cannot acces column family with composite key from CQL < 3.0.0");

        // For compatibility sake, we uppercase if it's the default alias as we used to return it that way in resultsets.

        String str = partitionKeyColumns.get(0).name.toString();

        return str.equalsIgnoreCase(DEFAULT_KEY_ALIAS) ? str.toUpperCase() : str;

    }

    public CompressionParameters compressionParameters()

    {

        return compressionParameters;

    }

    public Collection<ColumnDefinition> allColumns()

    {

        return columnMetadata.values();

    }

    // An iterator over all column definitions but that respect the order of a SELECT *.

    public Iterator<ColumnDefinition> allColumnsInSelectOrder()

    {

        return new AbstractIterator<ColumnDefinition>()

        {

            private final Iterator<ColumnDefinition> partitionKeyIter = partitionKeyColumns.iterator();

            private final Iterator<ColumnDefinition> clusteringIter = clusteringColumns.iterator();

            private boolean valueDone;

            private final Iterator<ColumnDefinition> staticIter = staticColumns.iterator();

            private final Iterator<ColumnDefinition> regularIter = regularColumns.iterator();

            protected ColumnDefinition computeNext()

            {

                if (partitionKeyIter.hasNext())

                    return partitionKeyIter.next();

                if (clusteringIter.hasNext())

                    return clusteringIter.next();

                if (staticIter.hasNext())

                    return staticIter.next();

                if (compactValueColumn != null && !valueDone)

                {

                    valueDone = true;

                    // If the compactValueColumn is empty, this means we have a dense table but

                    // with only a PK. As far as selects are concerned, we should ignore the value.

                    if (compactValueColumn.name.bytes.hasRemaining())

                        return compactValueColumn;

                }

                if (regularIter.hasNext())

                    return regularIter.next();

                return endOfData();

            }

        };

    }

    public List<ColumnDefinition> partitionKeyColumns()

    {

        return partitionKeyColumns;

    }

    public List<ColumnDefinition> clusteringColumns()

    {

        return clusteringColumns;

    }

    public Set<ColumnDefinition> regularColumns()

    {

        return regularColumns;

    }

    public Set<ColumnDefinition> staticColumns()

    {

        return staticColumns;

    }

    public Iterable<ColumnDefinition> regularAndStaticColumns()

    {

        return Iterables.concat(staticColumns, regularColumns);

    }

    public ColumnDefinition compactValueColumn()

    {

        return compactValueColumn;

    }

    // TODO: we could use CType for key validation too to make this unnecessary but

    // it's unclear it would be a win overall

    public CType getKeyValidatorAsCType()

    {

        return keyValidator instanceof CompositeType

             ? new CompoundCType(((CompositeType) keyValidator).types)

             : new SimpleCType(keyValidator);

    }

    public double getBloomFilterFpChance()

    {

        // we disallow bFFPC==null starting in 1.2.1 but tolerated it before that

        return (bloomFilterFpChance == null || bloomFilterFpChance == 0)

               ? compactionStrategyClass == LeveledCompactionStrategy.class ? 0.1 : 0.01

               : bloomFilterFpChance;

    }

    public CachingOptions getCaching()

    {

        return caching;

    }

    public int getMinIndexInterval()

    {

        return minIndexInterval;

    }

    public int getMaxIndexInterval()

    {

        return maxIndexInterval;

    }

    public SpeculativeRetry getSpeculativeRetry()

    {

        return speculativeRetry;

    }

    public int getMemtableFlushPeriod()

    {

        return memtableFlushPeriod;

    }

    public int getDefaultTimeToLive()

    {

        return defaultTimeToLive;

    }

    public Map<ColumnIdentifier, Long> getDroppedColumns()

    {

        return droppedColumns;

    }

    @Override

    public boolean equals(Object o)

    {

        if (this == o)

            return true;

        if (!(o instanceof CFMetaData))

            return false;

        CFMetaData other = (CFMetaData) o;

        return Objects.equal(cfId, other.cfId)

            && Objects.equal(ksName, other.ksName)

            && Objects.equal(cfName, other.cfName)

            && Objects.equal(cfType, other.cfType)

            && Objects.equal(comparator, other.comparator)

            && Objects.equal(comment, other.comment)

            && Objects.equal(readRepairChance, other.readRepairChance)

            && Objects.equal(dcLocalReadRepairChance, other.dcLocalReadRepairChance)

            && Objects.equal(gcGraceSeconds, other.gcGraceSeconds)

            && Objects.equal(defaultValidator, other.defaultValidator)

            && Objects.equal(keyValidator, other.keyValidator)

            && Objects.equal(minCompactionThreshold, other.minCompactionThreshold)

            && Objects.equal(maxCompactionThreshold, other.maxCompactionThreshold)

            && Objects.equal(columnMetadata, other.columnMetadata)

            && Objects.equal(compactionStrategyClass, other.compactionStrategyClass)

            && Objects.equal(compactionStrategyOptions, other.compactionStrategyOptions)

            && Objects.equal(compressionParameters, other.compressionParameters)

            && Objects.equal(bloomFilterFpChance, other.bloomFilterFpChance)

            && Objects.equal(memtableFlushPeriod, other.memtableFlushPeriod)

            && Objects.equal(caching, other.caching)

            && Objects.equal(defaultTimeToLive, other.defaultTimeToLive)

            && Objects.equal(minIndexInterval, other.minIndexInterval)

            && Objects.equal(maxIndexInterval, other.maxIndexInterval)

            && Objects.equal(speculativeRetry, other.speculativeRetry)

            && Objects.equal(droppedColumns, other.droppedColumns)

            && Objects.equal(triggers, other.triggers);

    }

    @Override

    public int hashCode()

    {

        return new HashCodeBuilder(29, 1597)

            .append(cfId)

            .append(ksName)

            .append(cfName)

            .append(cfType)

            .append(comparator)

            .append(comment)

            .append(readRepairChance)

            .append(dcLocalReadRepairChance)

            .append(gcGraceSeconds)

            .append(defaultValidator)

            .append(keyValidator)

            .append(minCompactionThreshold)

            .append(maxCompactionThreshold)

            .append(columnMetadata)

            .append(compactionStrategyClass)

            .append(compactionStrategyOptions)

            .append(compressionParameters)

            .append(bloomFilterFpChance)

            .append(memtableFlushPeriod)

            .append(caching)

            .append(defaultTimeToLive)

            .append(minIndexInterval)

            .append(maxIndexInterval)

            .append(speculativeRetry)

            .append(droppedColumns)

            .append(triggers)

            .toHashCode();

    }

    public AbstractType<?> getValueValidator(CellName cellName)

    {