com.bigdata.btree

Class HTreeIndexMetadata

java.lang.Object

com.bigdata.btree.IndexMetadata

com.bigdata.btree.HTreeIndexMetadata

All Implemented Interfaces:

IKeyBuilderFactory, Externalizable, Serializable, Cloneable

public class HTreeIndexMetadata
extends IndexMetadata

HTree specific implementation.

Author:

Bryan Thompson

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	HTreeIndexMetadata.Options HTree specific options.

Constructor Summary

Constructors

Constructor and Description
HTreeIndexMetadata() De-serialization constructor only - DO NOT use this ctor for creating a new instance! It will result in a thrown exception, typically from IndexMetadata.firstCheckpoint().
HTreeIndexMetadata(IIndexManager indexManager, Properties properties, String namespace, UUID indexUUID) Constructor used to configure a new named B+Tree.
HTreeIndexMetadata(String name, UUID indexUUID) Constructor used to configure a new named BTree.
HTreeIndexMetadata(UUID indexUUID) Constructor used to configure a new unnamed HTree.

Method Summary

Methods

Modifier and Type	Method and Description
HTreeIndexMetadata	clone() Makes a copy of the persistent data, clearing the address of the IndexMetadata record on the cloned copy.
int	getAddressBits()
String	getHTreeClassName() The name of a class derived from HTree that will be used to re-load the index.
int	getKeyLen()
void	readExternal(ObjectInput in)
void	setAddressBits(int addressBits)
void	setHTreeClassName(String className)
void	setKeyLen(int keyLen)
protected void	toString(StringBuilder sb) Extension hook for IndexMetadata.toString().
void	writeExternal(ObjectOutput out)

Methods inherited from class com.bigdata.btree.IndexMetadata

firstCheckpoint, getAsynchronousIndexWriteConfiguration, getAsynchronousIndexWriteConfiguration, getBloomFilterFactory, getBranchingFactor, getBTreeClassName, getBtreeRecordCompressorFactory, getCheckpointClassName, getConflictResolver, getDeleteMarkers, getIndexSegmentBranchingFactor, getIndexSegmentBufferNodes, getIndexSegmentRecordCompressorFactory, getIndexType, getIndexUUID, getInitialDataServiceUUID, getKeyBuilder, getMaxRecLen, getMetadataAddr, getName, getNodeKeySerializer, getOverflowHandler, getPartitionMetadata, getPrimaryKeyBuilder, getProperty, getProperty, getRawRecords, getScatterSplitConfiguration, getSplitHandler, getTupleSerializer, getVersionTimestampFilters, getVersionTimestamps, getWriteRetentionQueueCapacity, getWriteRetentionQueueScan, isIsolatable, overflowCheckpoint, read, setBloomFilterFactory, setBranchingFactor, setBTreeClassName, setBtreeRecordCompressorFactory, setCheckpointClassName, setConflictResolver, setDeleteMarkers, setIndexSegmentBranchingFactor, setIndexSegmentBufferNodes, setIndexSegmentRecordCompressorFactory, setInitialDataServiceUUID, setIsolatable, setMaxRecLen, setNodeKeySerializer, setOverflowHandler, setPartitionMetadata, setRawRecords, setScatterSplitConfiguration, setSplitHandler, setTupleSerializer, setVersionTimestampFilters, setVersionTimestamps, setWriteRetentionQueueCapacity, setWriteRetentionQueueScan, toString, write

Methods inherited from class java.lang.Object

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

Constructor Detail

HTreeIndexMetadata

public HTreeIndexMetadata()

De-serialization constructor only - DO NOT use this ctor for creating a new instance! It will result in a thrown exception, typically from IndexMetadata.firstCheckpoint().

HTreeIndexMetadata

public HTreeIndexMetadata(UUID indexUUID)

Constructor used to configure a new unnamed HTree. The index UUID is set to the given value and all other fields are defaulted as explained at #HTreeIndexMetadata(Properties, String, UUID). Those defaults may be overridden using the various setter methods, but some values can not be safely overridden after the index is in use.

Parameters:

indexUUID - The indexUUID.

Throws:

IllegalArgumentException - if the indexUUID is null.

HTreeIndexMetadata

public HTreeIndexMetadata(String name,
                  UUID indexUUID)

Constructor used to configure a new named BTree. The index UUID is set to the given value and all other fields are defaulted as explained at #IndexMetadata(Properties, String, UUID). Those defaults may be overridden using the various setter methods, but some values can not be safely overridden after the index is in use.

Parameters:

name - The index name. When this is a scale-out index, the same name is specified for each index resource. However they will be registered on the journal under different names depending on the index partition to which they belong.

indexUUID - The indexUUID. The same index UUID MUST be used for all component indices in a scale-out index.

Throws:

IllegalArgumentException - if the indexUUID is null.

HTreeIndexMetadata

public HTreeIndexMetadata(IIndexManager indexManager,
                  Properties properties,
                  String namespace,
                  UUID indexUUID)

Constructor used to configure a new named B+Tree. The index UUID is set to the given value and all other fields are defaulted as explained at #getProperty(Properties, String, String, String). Those defaults may be overridden using the various setter methods.

Parameters:

indexManager - Optional. When given and when the IIndexManager is a scale-out IBigdataFederation, this object will be used to interpret the IndexMetadata.Options.INITIAL_DATA_SERVICE property.

properties - Properties object used to overridden the default values for this IndexMetadata instance.

namespace - The index name. When this is a scale-out index, the same name is specified for each index resource. However they will be registered on the journal under different names depending on the index partition to which they belong.

indexUUID - component indices in a scale-out index. The indexUUID. The same index UUID MUST be used for all

indexType - Type-safe enumeration specifying the type of the persistence class data structure (historically, this was always a B+Tree).

Throws:

IllegalArgumentException - if properties is null.

IllegalArgumentException - if indexUUID is null.

Method Detail

getHTreeClassName

public final String getHTreeClassName()

The name of a class derived from HTree that will be used to re-load the index.

See Also:

HTreeIndexMetadata.Options.HTREE_CLASS_NAME

setHTreeClassName

public void setHTreeClassName(String className)

getAddressBits

public int getAddressBits()

setAddressBits

public void setAddressBits(int addressBits)

getKeyLen

public int getKeyLen()

setKeyLen

public void setKeyLen(int keyLen)

toString

protected void toString(StringBuilder sb)

Description copied from class: IndexMetadata

Extension hook for IndexMetadata.toString().

Overrides:

toString in class IndexMetadata

Parameters:

sb - Where to write additional metadata.

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Overrides:

readExternal in class IndexMetadata

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Overrides:

writeExternal in class IndexMetadata

Throws:

IOException

clone

public HTreeIndexMetadata clone()

Description copied from class: IndexMetadata

Makes a copy of the persistent data, clearing the address of the IndexMetadata record on the cloned copy.

Overrides:

clone in class IndexMetadata

Returns:

The cloned copy.