Package org.eclipse.rdf4j.sail.memory
Class FileIO
- java.lang.Object
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- org.eclipse.rdf4j.sail.memory.FileIO
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class FileIO extends java.lang.Object
Functionality to read and write MemoryStore to/from a file.
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Field Summary
Fields Modifier and Type Field Description private static int
BMSF_VERSION
The version number of the current format.static int
BNODE_MARKER
private java.nio.charset.CharsetDecoder
charsetDecoder
private java.nio.charset.CharsetEncoder
charsetEncoder
static int
DATATYPE_LITERAL_MARKER
static int
EOF_MARKER
static int
EXPL_QUAD_MARKER
static int
EXPL_TRIPLE_MARKER
private int
formatVersion
static int
INF_QUAD_MARKER
static int
INF_TRIPLE_MARKER
static int
LANG_LITERAL_MARKER
private static byte[]
MAGIC_NUMBER
Magic number for Binary Memory Store Filesstatic int
NAMESPACE_MARKER
static int
PLAIN_LITERAL_MARKER
static int
RDFSTAR_TRIPLE_MARKER
static int
URI_MARKER
private MemValueFactory
vf
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Constructor Summary
Constructors Constructor Description FileIO(MemValueFactory vf)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
read(java.io.File dataFile, SailSink explicit, SailSink inferred)
private void
readNamespace(java.io.DataInputStream dataIn, SailSink store)
private void
readStatement(boolean hasContext, boolean isExplicit, java.io.DataInputStream dataIn, SailSink explicit, SailSink inferred)
private java.lang.String
readString(java.io.DataInputStream dataIn)
private java.lang.String
readStringV1(java.io.DataInputStream dataIn)
Reads a string from the version 1 format, i.e.private java.lang.String
readStringV2(java.io.DataInputStream dataIn)
Reads a string from the version 2 format.private Value
readValue(java.io.DataInputStream dataIn)
private void
write(SailDataset explicit, SailDataset inferred, java.io.File dataFile)
void
write(SailDataset explicit, SailDataset inferred, java.io.File syncFile, java.io.File dataFile)
private void
writeNamespaces(SailDataset store, java.io.DataOutputStream dataOut)
void
writeStatement(CloseableIteration<? extends Statement,SailException> stIter, int tripleMarker, int quadMarker, java.io.DataOutputStream dataOut)
private void
writeStatements(SailDataset explicit, SailDataset inferred, java.io.DataOutputStream dataOut)
private void
writeString(java.lang.String s, java.io.DataOutputStream dataOut)
private void
writeValue(Value value, java.io.DataOutputStream dataOut)
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Field Detail
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MAGIC_NUMBER
private static final byte[] MAGIC_NUMBER
Magic number for Binary Memory Store Files
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BMSF_VERSION
private static final int BMSF_VERSION
The version number of the current format.- See Also:
- Constant Field Values
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NAMESPACE_MARKER
public static final int NAMESPACE_MARKER
- See Also:
- Constant Field Values
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EXPL_TRIPLE_MARKER
public static final int EXPL_TRIPLE_MARKER
- See Also:
- Constant Field Values
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EXPL_QUAD_MARKER
public static final int EXPL_QUAD_MARKER
- See Also:
- Constant Field Values
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INF_TRIPLE_MARKER
public static final int INF_TRIPLE_MARKER
- See Also:
- Constant Field Values
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INF_QUAD_MARKER
public static final int INF_QUAD_MARKER
- See Also:
- Constant Field Values
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URI_MARKER
public static final int URI_MARKER
- See Also:
- Constant Field Values
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BNODE_MARKER
public static final int BNODE_MARKER
- See Also:
- Constant Field Values
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PLAIN_LITERAL_MARKER
public static final int PLAIN_LITERAL_MARKER
- See Also:
- Constant Field Values
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LANG_LITERAL_MARKER
public static final int LANG_LITERAL_MARKER
- See Also:
- Constant Field Values
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DATATYPE_LITERAL_MARKER
public static final int DATATYPE_LITERAL_MARKER
- See Also:
- Constant Field Values
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RDFSTAR_TRIPLE_MARKER
public static final int RDFSTAR_TRIPLE_MARKER
- See Also:
- Constant Field Values
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EOF_MARKER
public static final int EOF_MARKER
- See Also:
- Constant Field Values
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vf
private final MemValueFactory vf
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charsetEncoder
private final java.nio.charset.CharsetEncoder charsetEncoder
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charsetDecoder
private final java.nio.charset.CharsetDecoder charsetDecoder
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formatVersion
private int formatVersion
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Constructor Detail
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FileIO
public FileIO(MemValueFactory vf)
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Method Detail
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write
public void write(SailDataset explicit, SailDataset inferred, java.io.File syncFile, java.io.File dataFile) throws java.io.IOException, SailException
- Throws:
java.io.IOException
SailException
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write
private void write(SailDataset explicit, SailDataset inferred, java.io.File dataFile) throws java.io.IOException, SailException
- Throws:
java.io.IOException
SailException
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read
public void read(java.io.File dataFile, SailSink explicit, SailSink inferred) throws java.io.IOException, SailException
- Throws:
java.io.IOException
SailException
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writeNamespaces
private void writeNamespaces(SailDataset store, java.io.DataOutputStream dataOut) throws java.io.IOException, SailException
- Throws:
java.io.IOException
SailException
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readNamespace
private void readNamespace(java.io.DataInputStream dataIn, SailSink store) throws java.io.IOException, SailException
- Throws:
java.io.IOException
SailException
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writeStatements
private void writeStatements(SailDataset explicit, SailDataset inferred, java.io.DataOutputStream dataOut) throws java.io.IOException, SailException
- Throws:
java.io.IOException
SailException
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writeStatement
public void writeStatement(CloseableIteration<? extends Statement,SailException> stIter, int tripleMarker, int quadMarker, java.io.DataOutputStream dataOut) throws java.io.IOException, SailException
- Throws:
java.io.IOException
SailException
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readStatement
private void readStatement(boolean hasContext, boolean isExplicit, java.io.DataInputStream dataIn, SailSink explicit, SailSink inferred) throws java.io.IOException, java.lang.ClassCastException, SailException
- Throws:
java.io.IOException
java.lang.ClassCastException
SailException
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writeValue
private void writeValue(Value value, java.io.DataOutputStream dataOut) throws java.io.IOException
- Throws:
java.io.IOException
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readValue
private Value readValue(java.io.DataInputStream dataIn) throws java.io.IOException, java.lang.ClassCastException
- Throws:
java.io.IOException
java.lang.ClassCastException
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writeString
private void writeString(java.lang.String s, java.io.DataOutputStream dataOut) throws java.io.IOException
- Throws:
java.io.IOException
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readString
private java.lang.String readString(java.io.DataInputStream dataIn) throws java.io.IOException
- Throws:
java.io.IOException
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readStringV1
private java.lang.String readStringV1(java.io.DataInputStream dataIn) throws java.io.IOException
Reads a string from the version 1 format, i.e. in Java's {@link DataInput#modified-utf-8 Modified UTF-8}.- Throws:
java.io.IOException
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readStringV2
private java.lang.String readStringV2(java.io.DataInputStream dataIn) throws java.io.IOException
Reads a string from the version 2 format. Strings are encoded as UTF-8 and are preceeded by a 32-bit integer (high byte first) specifying the length of the encoded string.- Throws:
java.io.IOException
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