com.bigdata.rdf.internal

Class InlineLocalNameIntegerURIHandler

java.lang.Object

com.bigdata.rdf.internal.InlineURIHandler

com.bigdata.rdf.internal.InlineSignedIntegerURIHandler

com.bigdata.rdf.internal.InlineLocalNameIntegerURIHandler

Direct Known Subclasses:

InlineIntegerURIHandlerMap, InlinePrefixedFixedWidthIntegerURIHandler, InlinePrefixedIntegerURIHandler, InlinePrefixedSuffixedFixedWidthIntegerURIHandler, InlinePrefixedSuffixedIntegerURIHandler, InlineSuffixedFixedWidthIntegerURIHandler, InlineSuffixedIntegerURIHandler

public abstract class InlineLocalNameIntegerURIHandler
extends InlineSignedIntegerURIHandler

Abstract class that defines the integer packing needed to allow for support of multiple inline integer URI handlers with the same namepace. This is required as once the integer value is inlined it is not possible to determine which handler to apply if there are multiple namespaces that use different prefixed or suffixed inline handlers. For example: http://rdf.ncbi.nlm.nih.gov/pubchem/descriptor/ descriptor:CID5606223_Compound_Identifier , descriptor:CID5606223_Covalent_Unit_Count , descriptor:CID5606223_Defined_Atom_Stereo_Count , Each of these can be supported as a different InlinePrefixedSuffixedIntegerURIHandler at the namespace http://rdf.ncbi.nlm.nih.gov/pubchem/descriptor/. It current supports up to 32 different inline values for a single namespace URI. It is used in conjunction with the InlineIntegerURIHandlerMap. For an example, see com.blazegraph.vocab.pubchem.PubchemInlineURIFactory. The max inline integer value that can supported in this scheme is 2^57 - 1, which is 2^5 less than the Java Long.MAX_VALUE.

Author:

beebs

Field Summary

Fields

Modifier and Type	Field and Description
protected int	packedId The ID to pack.

Fields inherited from class com.bigdata.rdf.internal.InlineURIHandler

namespaceIV

Constructor Summary

Constructors

Constructor and Description
InlineLocalNameIntegerURIHandler(String namespace)
InlineLocalNameIntegerURIHandler(String namespace, int packedId)

Method Summary

Methods

Modifier and Type	Method and Description
String	getPackedValueString(String intVal) Convenience method to take an Integer string value, pack it, and convert back to a string.
long	getUnpackedValueFromString(String s) Convenience method to unpack a long value from a string.
String	getUnpackedValueString(String s) Convenience method for unpacking a value from a string.
long	packValue(long value) Pack the value with the leading 5 bits used to encode the id used for decoding the inline URI handler.
int	unpackId(long packedVal) Take a packed long and extract the ID.
int	unpackId(String s) Convenience method to get the packed ID value from an input String.
long	unpackValue(long packedVal) Take a packed long and extract the value.

Methods inherited from class com.bigdata.rdf.internal.InlineSignedIntegerURIHandler

createInlineIV, createInlineIV, createInlineIV

Methods inherited from class com.bigdata.rdf.internal.InlineURIHandler

createInlineIV, getLocalNameFromDelegate, getNamespace, init

Methods inherited from class java.lang.Object

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

Field Detail

packedId

protected int packedId

The ID to pack. From 0 to the MAX_IDS

Constructor Detail

InlineLocalNameIntegerURIHandler

public InlineLocalNameIntegerURIHandler(String namespace)

InlineLocalNameIntegerURIHandler

public InlineLocalNameIntegerURIHandler(String namespace,
                                int packedId)

Method Detail

packValue

public long packValue(long value)

Pack the value with the leading 5 bits used to encode the id used for decoding the inline URI handler.

Parameters:

value -

Returns:

getPackedValueString

public String getPackedValueString(String intVal)

Convenience method to take an Integer string value, pack it, and convert back to a string.

Parameters:

intVal -

Returns:

getUnpackedValueString

public String getUnpackedValueString(String s)

Convenience method for unpacking a value from a string.

Parameters:

s -

Returns:

getUnpackedValueFromString

public long getUnpackedValueFromString(String s)

Convenience method to unpack a long value from a string.

Parameters:

s -

Returns:

unpackValue

public long unpackValue(long packedVal)

Take a packed long and extract the value.

Parameters:

packedVal -

Returns:

unpackId

public int unpackId(String s)

Convenience method to get the packed ID value from an input String.

Parameters:

s -

Returns:

unpackId

public int unpackId(long packedVal)

Take a packed long and extract the ID.

Parameters:

packedVal -

Returns: