public class UUIDLiteralIV<V extends BigdataLiteral> extends AbstractLiteralIV<V,UUID> implements org.openrdf.model.Literal
UUIDs (there is no corresponding XML
Schema Datatype).flags| Constructor and Description |
|---|
UUIDLiteralIV(UUID value) |
| Modifier and Type | Method and Description |
|---|---|
int |
_compareTo(IV o)
Compare two
IVs having the same intrinsic datatype. |
V |
asValue(LexiconRelation lex)
If the value is not already cached, then inflate an inline RDF value to a
BigdataValue and cache it on a private field. |
int |
byteLength()
The byte length of the encoded
IV. |
IV<V,UUID> |
clone(boolean clearCache)
Return a copy of this
IV. |
boolean |
equals(Object o)
Return true iff the two
IVs are the same point in the same value
space. |
UUID |
getInlineValue()
Return the Java
Object corresponding to the inline value. |
int |
hashCode()
Return the hash code of the
UUID. |
booleanValue, byteValue, calendarValue, decimalValue, doubleValue, floatValue, getDatatype, getLabel, getLanguage, integerValue, intValue, longValue, needsMaterialization, shortValue, stringValue, toStringisInlinecompareTo, encode, flags, getDTE, getDTE, getDTEX, getInternalValueTypeEnum, getValue, getValueCache, getVTE, getVTE, hasValue, isBigNumeric, isBNode, isExtension, isExtension, isFixedNumeric, isFloatingPointNumeric, isInline, isLiteral, isNullIV, isNumeric, isResource, isSignedNumeric, isStatement, isUnsignedNumeric, isURI, isVocabulary, setValue, toFlagsclone, finalize, getClass, notify, notifyAll, wait, wait, waitbooleanValue, byteValue, calendarValue, decimalValue, doubleValue, floatValue, getDatatype, getLabel, getLanguage, integerValue, intValue, longValue, shortValueencode, flags, getDTE, getDTEX, getVTE, isBigNumeric, isBNode, isExtension, isFixedNumeric, isFloatingPointNumeric, isInline, isLiteral, isNullIV, isNumeric, isResource, isSignedNumeric, isStatement, isUnsignedNumeric, isURI, isVocabularycompareTopublic UUIDLiteralIV(UUID value)
public IV<V,UUID> clone(boolean clearCache)
IVCacheIV.
Note: This method exists to defeat the hard reference from the IV
to the cached BigdataValue in order to avoid a memory leak when
the IV is used as the key in a weak value cache whose value is
the BigdataValue. Therefore, certain IV implementations
MAY return this when they are used for limited collections. The
vocabulary IVs are the primary example. For the same reason, we do not
need to recursively break the link from the IV to the
BigdataValue for IVs which embed other IVs.
clone in interface IVCache<V extends BigdataLiteral,UUID>clearCache - When true the cached reference (if any) will NOT
be set on the copy.(Thread-local
cache combined with unbounded thread pools causes effective memory
leak)public final UUID getInlineValue()
IVObject corresponding to the inline value.getInlineValue in interface IV<V extends BigdataLiteral,UUID>Object.public V asValue(LexiconRelation lex)
IVCacheBigdataValue and cache it on a private field.
Note: Query plans are responsible for ensuring that IVs have been
materialized before operators are evaluated which invoke this method.
This pattern ensures that efficient batch operators are used to
materialize Values, and thereby avoids heavy RMI overhead in
scale-out, and provides operators which use IVCache.getValue() with a
simple method signature which does not require access to the lexicon.
Query plans are also responsible for dropping variables once they are no
longer needed or, in the case of large values and BLOBs, dropping the
cached BigdataValue when possible in order to avoid excess
network and heap overhead.
asValue in interface IVCache<V extends BigdataLiteral,UUID>lex - The lexicon relation (this is required in order to access the
BigdataValueFactory for the namespace associated with
lexicon when we materialize an inline IV).BigdataValue.public boolean equals(Object o)
AbstractIVIVs are the same point in the same value
space. Points in different value spaces (as identified by different
datatype URIs) are NOT equal even if they have the same value in the
corresponding primitive data type.
Note: The IV implementations typically DO NOT compare equals()
with BigdataValues. Therefore you MUST NOT mix IVs and
BigdataValues in the keys of a map or the values of a set.
equals in interface org.openrdf.model.Literalequals in class AbstractIV<V extends BigdataLiteral,UUID>public int hashCode()
UUID.hashCode in interface org.openrdf.model.LiteralhashCode in class AbstractIV<V extends BigdataLiteral,UUID>public int byteLength()
IVIV.byteLength in interface IV<V extends BigdataLiteral,UUID>public int _compareTo(IV o)
AbstractIVIVs having the same intrinsic datatype._compareTo in class AbstractIV<V extends BigdataLiteral,UUID>Copyright © 2006–2019 SYSTAP, LLC DBA Blazegraph. All rights reserved.