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/*
* 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.
*/
package org.apache.phoenix.schema;
import static com.google.common.base.Preconditions.checkArgument;
import static org.apache.phoenix.query.QueryConstants.ENCODED_CQ_COUNTER_INITIAL_VALUE;
import static org.apache.phoenix.util.EncodedColumnsUtil.isReservedColumnQualifier;
import java.io.DataOutputStream;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import javax.annotation.Nullable;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.phoenix.hbase.index.util.KeyValueBuilder;
import org.apache.phoenix.index.IndexMaintainer;
import org.apache.phoenix.jdbc.PhoenixConnection;
import org.apache.phoenix.schema.types.PArrayDataType;
import org.apache.phoenix.schema.types.PArrayDataTypeDecoder;
import org.apache.phoenix.schema.types.PArrayDataTypeEncoder;
import org.apache.phoenix.schema.types.PDataType;
import org.apache.phoenix.schema.types.PVarbinary;
import org.apache.phoenix.transaction.TransactionFactory;
import org.apache.phoenix.util.TrustedByteArrayOutputStream;
import com.google.common.annotations.VisibleForTesting;
/**
* Definition of a Phoenix table
*
*
* @since 0.1
*/
public interface PTable extends PMetaDataEntity {
public static final long INITIAL_SEQ_NUM = 0;
public static final String IS_IMMUTABLE_ROWS_PROP_NAME = "IMMUTABLE_ROWS";
public static final boolean DEFAULT_DISABLE_WAL = false;
public static final boolean DEFAULT_IMMUTABLE_ROWS = false;
public enum ViewType {
MAPPED((byte)1),
READ_ONLY((byte)2),
UPDATABLE((byte)3);
private final byte[] byteValue;
private final byte serializedValue;
ViewType(byte serializedValue) {
this.serializedValue = serializedValue;
this.byteValue = Bytes.toBytes(this.name());
}
public byte[] getBytes() {
return byteValue;
}
public boolean isReadOnly() {
return this != UPDATABLE;
}
public byte getSerializedValue() {
return this.serializedValue;
}
public static ViewType fromSerializedValue(byte serializedValue) {
if (serializedValue < 1 || serializedValue > ViewType.values().length) {
throw new IllegalArgumentException("Invalid ViewType " + serializedValue);
}
return ViewType.values()[serializedValue-1];
}
public ViewType combine(ViewType otherType) {
if (otherType == null) {
return this;
}
if (this == UPDATABLE && otherType == UPDATABLE) {
return UPDATABLE;
}
return READ_ONLY;
}
}
public enum IndexType {
GLOBAL((byte)1),
LOCAL((byte)2);
private final byte[] byteValue;
private final byte serializedValue;
IndexType(byte serializedValue) {
this.serializedValue = serializedValue;
this.byteValue = Bytes.toBytes(this.name());
}
public byte[] getBytes() {
return byteValue;
}
public byte getSerializedValue() {
return this.serializedValue;
}
public static IndexType getDefault() {
return GLOBAL;
}
public static IndexType fromToken(String token) {
return IndexType.valueOf(token.trim().toUpperCase());
}
public static IndexType fromSerializedValue(byte serializedValue) {
if (serializedValue < 1 || serializedValue > IndexType.values().length) {
throw new IllegalArgumentException("Invalid IndexType " + serializedValue);
}
return IndexType.values()[serializedValue-1];
}
}
public enum LinkType {
/**
* Link from a table to its index table
*/
INDEX_TABLE((byte)1),
/**
* Link from a view or index to its physical table
*/
PHYSICAL_TABLE((byte)2),
/**
* Link from a view to its parent table
*/
PARENT_TABLE((byte)3),
/**
* Link from a parent table to its child view
* (these are stored in SYSTEM.CHILD_LINK for scalability)
*/
CHILD_TABLE((byte)4),
/**
* Link for an excluded (dropped) column
*/
EXCLUDED_COLUMN((byte)5),
/**
* Link from an index on a view to its parent table
*/
VIEW_INDEX_PARENT_TABLE((byte)6);
private final byte[] byteValue;
private final byte serializedValue;
private final byte[] serializedByteArrayValue;
LinkType(byte serializedValue) {
this.serializedValue = serializedValue;
this.byteValue = Bytes.toBytes(this.name());
this.serializedByteArrayValue = new byte[] { serializedValue };
}
public byte[] getBytes() {
return byteValue;
}
public byte getSerializedValue() {
return this.serializedValue;
}
public byte[] getSerializedValueAsByteArray() {
return serializedByteArrayValue;
}
public static LinkType fromSerializedValue(byte serializedValue) {
if (serializedValue < 1 || serializedValue > LinkType.values().length) {
return null;
}
return LinkType.values()[serializedValue-1];
}
}
public enum TaskType {
DROP_CHILD_VIEWS((byte)1),
INDEX_REBUILD((byte)2);
private final byte[] byteValue;
private final byte serializedValue;
TaskType(byte serializedValue) {
this.serializedValue = serializedValue;
this.byteValue = Bytes.toBytes(this.name());
}
public byte[] getBytes() {
return byteValue;
}
public byte getSerializedValue() {
return this.serializedValue;
}
public static TaskType getDefault() {
return DROP_CHILD_VIEWS;
}
public static TaskType fromSerializedValue(byte serializedValue) {
if (serializedValue < 1 || serializedValue > TaskType.values().length) {
throw new IllegalArgumentException("Invalid TaskType " + serializedValue);
}
return TaskType.values()[serializedValue-1];
}
}
public enum TaskStatus {
CREATED {
public String toString() {
return "CREATED";
}
},
STARTED {
public String toString() {
return "STARTED";
}
},
COMPLETED {
public String toString() {
return "COMPLETED";
}
},
FAILED {
public String toString() {
return "FAILED";
}
},
}
public enum ImmutableStorageScheme implements ColumnValueEncoderDecoderSupplier {
ONE_CELL_PER_COLUMN((byte)1) {
@Override
public ColumnValueEncoder getEncoder(int numElements) {
throw new UnsupportedOperationException();
}
@Override
public ColumnValueDecoder getDecoder() {
throw new UnsupportedOperationException();
}
},
// stores a single cell per column family that contains all serialized column values
SINGLE_CELL_ARRAY_WITH_OFFSETS((byte)2, PArrayDataType.IMMUTABLE_SERIALIZATION_V2) {
@Override
public ColumnValueEncoder getEncoder(int numElements) {
PDataType type = PVarbinary.INSTANCE;
int estimatedSize = PArrayDataType.estimateSize(numElements, type);
TrustedByteArrayOutputStream byteStream = new TrustedByteArrayOutputStream(estimatedSize);
DataOutputStream oStream = new DataOutputStream(byteStream);
return new PArrayDataTypeEncoder(byteStream, oStream, numElements, type, SortOrder.ASC, false, getSerializationVersion());
}
@Override
public ColumnValueDecoder getDecoder() {
return new PArrayDataTypeDecoder();
}
};
private final byte serializedValue;
private byte serializationVersion;
private ImmutableStorageScheme(byte serializedValue) {
this.serializedValue = serializedValue;
}
private ImmutableStorageScheme(byte serializedValue, byte serializationVersion) {
this.serializedValue = serializedValue;
this.serializationVersion = serializationVersion;
}
public byte getSerializedMetadataValue() {
return this.serializedValue;
}
public byte getSerializationVersion() {
return this.serializationVersion;
}
@VisibleForTesting
void setSerializationVersion(byte serializationVersion) {
this.serializationVersion = serializationVersion;
}
public static ImmutableStorageScheme fromSerializedValue(byte serializedValue) {
if (serializedValue < 1 || serializedValue > ImmutableStorageScheme.values().length) {
return null;
}
return ImmutableStorageScheme.values()[serializedValue-1];
}
}
interface ColumnValueEncoderDecoderSupplier {
ColumnValueEncoder getEncoder(int numElements);
ColumnValueDecoder getDecoder();
}
public enum QualifierEncodingScheme implements QualifierEncoderDecoder {
NON_ENCODED_QUALIFIERS((byte)0, null) {
@Override
public byte[] encode(int value) {
throw new UnsupportedOperationException();
}
@Override
public int decode(byte[] bytes) {
throw new UnsupportedOperationException();
}
@Override
public int decode(byte[] bytes, int offset, int length) {
throw new UnsupportedOperationException();
}
@Override
public String toString() {
return name();
}
},
ONE_BYTE_QUALIFIERS((byte)1, 255) {
private final int c = Math.abs(Byte.MIN_VALUE);
@Override
public byte[] encode(int value) {
if (isReservedColumnQualifier(value)) {
return FOUR_BYTE_QUALIFIERS.encode(value);
}
if (value < 0 || value > maxQualifier) {
throw new QualifierOutOfRangeException(0, maxQualifier);
}
return new byte[]{(byte)(value - c)};
}
@Override
public int decode(byte[] bytes) {
if (bytes.length == 4) {
return getReservedQualifier(bytes);
}
if (bytes.length != 1) {
throw new InvalidQualifierBytesException(1, bytes.length);
}
return bytes[0] + c;
}
@Override
public int decode(byte[] bytes, int offset, int length) {
if (length == 4) {
return getReservedQualifier(bytes, offset, length);
}
if (length != 1) {
throw new InvalidQualifierBytesException(1, length);
}
return bytes[offset] + c;
}
@Override
public String toString() {
return name();
}
},
TWO_BYTE_QUALIFIERS((byte)2, 65535) {
private final int c = Math.abs(Short.MIN_VALUE);
@Override
public byte[] encode(int value) {
if (isReservedColumnQualifier(value)) {
return FOUR_BYTE_QUALIFIERS.encode(value);
}
if (value < 0 || value > maxQualifier) {
throw new QualifierOutOfRangeException(0, maxQualifier);
}
return Bytes.toBytes((short)(value - c));
}
@Override
public int decode(byte[] bytes) {
if (bytes.length == 4) {
return getReservedQualifier(bytes);
}
if (bytes.length != 2) {
throw new InvalidQualifierBytesException(2, bytes.length);
}
return Bytes.toShort(bytes) + c;
}
@Override
public int decode(byte[] bytes, int offset, int length) {
if (length == 4) {
return getReservedQualifier(bytes, offset, length);
}
if (length != 2) {
throw new InvalidQualifierBytesException(2, length);
}
return Bytes.toShort(bytes, offset, length) + c;
}
@Override
public String toString() {
return name();
}
},
THREE_BYTE_QUALIFIERS((byte)3, 16777215) {
@Override
public byte[] encode(int value) {
if (isReservedColumnQualifier(value)) {
return FOUR_BYTE_QUALIFIERS.encode(value);
}
if (value < 0 || value > maxQualifier) {
throw new QualifierOutOfRangeException(0, maxQualifier);
}
byte[] arr = Bytes.toBytes(value);
return new byte[]{arr[1], arr[2], arr[3]};
}
@Override
public int decode(byte[] bytes) {
if (bytes.length == 4) {
return getReservedQualifier(bytes);
}
if (bytes.length != 3) {
throw new InvalidQualifierBytesException(2, bytes.length);
}
byte[] toReturn = new byte[4];
toReturn[1] = bytes[0];
toReturn[2] = bytes[1];
toReturn[3] = bytes[2];
return Bytes.toInt(toReturn);
}
@Override
public int decode(byte[] bytes, int offset, int length) {
if (length == 4) {
return getReservedQualifier(bytes, offset, length);
}
if (length != 3) {
throw new InvalidQualifierBytesException(3, length);
}
byte[] toReturn = new byte[4];
toReturn[1] = bytes[offset];
toReturn[2] = bytes[offset + 1];
toReturn[3] = bytes[offset + 2];
return Bytes.toInt(toReturn);
}
@Override
public String toString() {
return name();
}
},
FOUR_BYTE_QUALIFIERS((byte)4, Integer.MAX_VALUE) {
@Override
public byte[] encode(int value) {
if (value < 0) {
throw new QualifierOutOfRangeException(0, maxQualifier);
}
return Bytes.toBytes(value);
}
@Override
public int decode(byte[] bytes) {
if (bytes.length != 4) {
throw new InvalidQualifierBytesException(4, bytes.length);
}
return Bytes.toInt(bytes);
}
@Override
public int decode(byte[] bytes, int offset, int length) {
if (length != 4) {
throw new InvalidQualifierBytesException(4, length);
}
return Bytes.toInt(bytes, offset, length);
}
@Override
public String toString() {
return name();
}
};
final byte metadataValue;
final Integer maxQualifier;
public byte getSerializedMetadataValue() {
return this.metadataValue;
}
public static QualifierEncodingScheme fromSerializedValue(byte serializedValue) {
if (serializedValue < 0 || serializedValue >= QualifierEncodingScheme.values().length) {
return null;
}
return QualifierEncodingScheme.values()[serializedValue];
}
@Override
public Integer getMaxQualifier() {
return maxQualifier;
}
private QualifierEncodingScheme(byte serializedMetadataValue, Integer maxQualifier) {
this.metadataValue = serializedMetadataValue;
this.maxQualifier = maxQualifier;
}
@VisibleForTesting
public static class QualifierOutOfRangeException extends RuntimeException {
public QualifierOutOfRangeException(int minQualifier, int maxQualifier) {
super("Qualifier out of range (" + minQualifier + ", " + maxQualifier + ")");
}
}
@VisibleForTesting
public static class InvalidQualifierBytesException extends RuntimeException {
public InvalidQualifierBytesException(int expectedLength, int actualLength) {
super("Invalid number of qualifier bytes. Expected length: " + expectedLength + ". Actual: " + actualLength);
}
}
/**
* We generate our column qualifiers in the reserved range 0-10 using the FOUR_BYTE_QUALIFIERS
* encoding. When adding Cells corresponding to the reserved qualifiers to the
* EncodedColumnQualifierCells list, we need to make sure that we use the FOUR_BYTE_QUALIFIERS
* scheme to decode the correct int value.
*/
private static int getReservedQualifier(byte[] bytes) {
checkArgument(bytes.length == 4);
int number = FOUR_BYTE_QUALIFIERS.decode(bytes);
if (!isReservedColumnQualifier(number)) {
throw new InvalidQualifierBytesException(4, bytes.length);
}
return number;
}
/**
* We generate our column qualifiers in the reserved range 0-10 using the FOUR_BYTE_QUALIFIERS
* encoding. When adding Cells corresponding to the reserved qualifiers to the
* EncodedColumnQualifierCells list, we need to make sure that we use the FOUR_BYTE_QUALIFIERS
* scheme to decode the correct int value.
*/
private static int getReservedQualifier(byte[] bytes, int offset, int length) {
checkArgument(length == 4);
int number = FOUR_BYTE_QUALIFIERS.decode(bytes, offset, length);
if (!isReservedColumnQualifier(number)) {
throw new InvalidQualifierBytesException(4, length);
}
return number;
}
}
interface QualifierEncoderDecoder {
byte[] encode(int value);
int decode(byte[] bytes);
int decode(byte[] bytes, int offset, int length);
Integer getMaxQualifier();
}
long getTimeStamp();
long getSequenceNumber();
long getIndexDisableTimestamp();
/**
* @return table name
*/
PName getName();
PName getSchemaName();
PName getTableName();
PName getTenantId();
/**
* @return the table type
*/
PTableType getType();
PName getPKName();
/**
* Get the PK columns ordered by position.
* @return a list of the PK columns
*/
List getPKColumns();
/**
* Get all columns ordered by position.
* @return a list of all columns
*/
List getColumns();
/**
* Get all excluded columns
* @return a list of excluded columns
*/
List getExcludedColumns();
/**
* @return A list of the column families of this table
* ordered by position.
*/
List getColumnFamilies();
/**
* Get the column family with the given name
* @param family the column family name
* @return the PColumnFamily with the given name
* @throws ColumnFamilyNotFoundException if the column family cannot be found
*/
PColumnFamily getColumnFamily(byte[] family) throws ColumnFamilyNotFoundException;
PColumnFamily getColumnFamily(String family) throws ColumnFamilyNotFoundException;
/**
* Get the column with the given string name.
* @param name the column name
* @return the PColumn with the given name
* @throws ColumnNotFoundException if no column with the given name
* can be found
* @throws AmbiguousColumnException if multiple columns are found with the given name
*/
PColumn getColumnForColumnName(String name) throws ColumnNotFoundException, AmbiguousColumnException;
/**
* Get the column with the given column qualifier.
* @param cf column family bytes
* @param cq qualifier bytes
* @return the PColumn with the given column qualifier
* @throws ColumnNotFoundException if no column with the given column qualifier can be found
* @throws AmbiguousColumnException if multiple columns are found with the given column qualifier
*/
PColumn getColumnForColumnQualifier(byte[] cf, byte[] cq) throws ColumnNotFoundException, AmbiguousColumnException;
/**
* Get the PK column with the given name.
* @param name the column name
* @return the PColumn with the given name
* @throws ColumnNotFoundException if no PK column with the given name
* can be found
* @throws ColumnNotFoundException
*/
PColumn getPKColumn(String name) throws ColumnNotFoundException;
/**
* Creates a new row at the specified timestamp using the key
* for the PK values (from {@link #newKey(ImmutableBytesWritable, byte[][])}
* and the optional key values specified using values.
* @param ts the timestamp that the key value will have when committed
* @param key the row key of the key value
* @param hasOnDupKey true if row has an ON DUPLICATE KEY clause and false otherwise.
* @param values the optional key values
* @return the new row. Use {@link org.apache.phoenix.schema.PRow#toRowMutations()} to
* generate the Row to send to the HBase server.
* @throws ConstraintViolationException if row data violates schema
* constraint
*/
PRow newRow(KeyValueBuilder builder, long ts, ImmutableBytesWritable key, boolean hasOnDupKey, byte[]... values);
/**
* Creates a new row for the PK values (from {@link #newKey(ImmutableBytesWritable, byte[][])}
* and the optional key values specified using values. The timestamp of the key value
* will be set by the HBase server.
* @param key the row key of the key value
* @param hasOnDupKey true if row has an ON DUPLICATE KEY clause and false otherwise.
* @param values the optional key values
* @return the new row. Use {@link org.apache.phoenix.schema.PRow#toRowMutations()} to
* generate the row to send to the HBase server.
* @throws ConstraintViolationException if row data violates schema
* constraint
*/
PRow newRow(KeyValueBuilder builder, ImmutableBytesWritable key, boolean hasOnDupKey, byte[]... values);
/**
* Formulates a row key using the values provided. The values must be in
* the same order as {@link #getPKColumns()}.
* @param key bytes pointer that will be filled in with the row key
* @param values the PK column values
* @return the number of values that were used from values to set
* the row key
*/
int newKey(ImmutableBytesWritable key, byte[][] values);
RowKeySchema getRowKeySchema();
/**
* Return the number of buckets used by this table for salting. If the table does
* not use salting, returns null.
* @return number of buckets used by this table for salting, or null if salting is not used.
*/
Integer getBucketNum();
/**
* Return the list of indexes defined on this table.
* @return the list of indexes.
*/
List getIndexes();
/**
* For a table of index type, return the state of the table.
* @return the state of the index.
*/
PIndexState getIndexState();
/**
* @return the full name of the parent view for a view or data table for an index table
* or null if this is not a view or index table. Also returns null for a view of a data table
* (use @getPhysicalName for this case)
*/
PName getParentName();
/**
* @return the table name of the parent view for a view or data table for an index table
* or null if this is not a view or index table. Also returns null for a view of a data table
* (use @getPhysicalTableName for this case)
*/
PName getParentTableName();
/**
* @return the schema name of the parent view for a view or data table for an index table
* or null if this is not a view or index table. Also returns null for view of a data table
* (use @getPhysicalSchemaName for this case)
*/
PName getParentSchemaName();
/**
* For a view, return the name of table in Phoenix that physically stores data.
* Currently a single name, but when views are allowed over multiple tables, will become multi-valued.
* @return the name of the physical table storing the data.
*/
public List getPhysicalNames();
/**
* For a view, return the name of table in HBase that physically stores data.
* @return the name of the physical HBase table storing the data.
*/
PName getPhysicalName();
boolean isImmutableRows();
boolean getIndexMaintainers(ImmutableBytesWritable ptr, PhoenixConnection connection);
IndexMaintainer getIndexMaintainer(PTable dataTable, PhoenixConnection connection);
PName getDefaultFamilyName();
boolean isWALDisabled();
boolean isMultiTenant();
boolean getStoreNulls();
boolean isTransactional();
TransactionFactory.Provider getTransactionProvider();
ViewType getViewType();
String getViewStatement();
Long getViewIndexId();
PDataType getviewIndexIdType();
PTableKey getKey();
IndexType getIndexType();
int getBaseColumnCount();
/**
* Determines whether or not we may optimize out an ORDER BY or do a GROUP BY
* in-place when the optimizer tells us it's possible. This is due to PHOENIX-2067
* and only applicable for tables using DESC primary key column(s) which have
* not been upgraded.
* @return true if optimizations row key order optimizations are possible
*/
boolean rowKeyOrderOptimizable();
/**
* @return Position of the column with {@link PColumn#isRowTimestamp()} as true.
* -1 if there is no such column.
*/
int getRowTimestampColPos();
long getUpdateCacheFrequency();
boolean isNamespaceMapped();
/**
* @return The sequence name used to get the unique identifier for views
* that are automatically partitioned.
*/
String getAutoPartitionSeqName();
/**
* @return true if the you can only add (and never delete) columns to the table,
* you are also not allowed to delete the table
*/
boolean isAppendOnlySchema();
ImmutableStorageScheme getImmutableStorageScheme();
QualifierEncodingScheme getEncodingScheme();
EncodedCQCounter getEncodedCQCounter();
Boolean useStatsForParallelization();
boolean hasViewModifiedUpdateCacheFrequency();
boolean hasViewModifiedUseStatsForParallelization();
Map getPropertyValues();
Map getDefaultPropertyValues();
/**
* @return The PHOENIX_TTL duration associated with the entity.
*/
long getPhoenixTTL();
/**
* @return The PHOENIX_TTL high water mark timestamp associated with the entity.
*/
long getPhoenixTTLHighWaterMark();
/**
* @return If the view has overridden the TTL set at the parent entity level.
*/
boolean hasViewModifiedPhoenixTTL();
/**
* @return the last timestamp at which this entity had its data shape created or modified (e
* .g, create entity, adding or dropping a column. Not affected by changing table properties
*/
Long getLastDDLTimestamp();
/**
* @return Whether change detection is enabled on a given table or view. If it is, we will
* annotate write-ahead logs with additional metadata
*/
boolean isChangeDetectionEnabled();
/**
* Class to help track encoded column qualifier counters per column family.
*/
public class EncodedCQCounter {
private final Map familyCounters = new HashMap<>();
/**
* Copy constructor
* @param counterToCopy
* @return copy of the passed counter
*/
public static EncodedCQCounter copy(EncodedCQCounter counterToCopy) {
EncodedCQCounter cqCounter = new EncodedCQCounter();
for (Entry e : counterToCopy.values().entrySet()) {
cqCounter.setValue(e.getKey(), e.getValue());
}
return cqCounter;
}
public static final EncodedCQCounter NULL_COUNTER = new EncodedCQCounter() {
@Override
public Integer getNextQualifier(String columnFamily) {
return null;
}
@Override
public void setValue(String columnFamily, Integer value) {
}
@Override
public boolean increment(String columnFamily) {
return false;
}
@Override
public Map values() {
return Collections.emptyMap();
}
};
/**
* Get the next qualifier to be used for the column family.
* This method also ends up initializing the counter if the
* column family already doesn't have one.
*/
@Nullable
public Integer getNextQualifier(String columnFamily) {
Integer counter = familyCounters.get(columnFamily);
if (counter == null) {
counter = ENCODED_CQ_COUNTER_INITIAL_VALUE;
familyCounters.put(columnFamily, counter);
}
return counter;
}
public void setValue(String columnFamily, Integer value) {
familyCounters.put(columnFamily, value);
}
/**
*
* @param columnFamily
* @return true if the counter was incremented, false otherwise.
*/
public boolean increment(String columnFamily) {
if (columnFamily == null) {
return false;
}
Integer counter = familyCounters.get(columnFamily);
if (counter == null) {
counter = ENCODED_CQ_COUNTER_INITIAL_VALUE;
}
counter++;
familyCounters.put(columnFamily, counter);
return true;
}
public Map values() {
return Collections.unmodifiableMap(familyCounters);
}
}
}
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