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java.lang.Objectorg.basex.io.TableAccess
org.basex.io.TableMemAccess
public final class TableMemAccess
This class allows main memory access to the database table representation.
Constructor Summary | |
---|---|
TableMemAccess(MetaData md,
String pf)
Stores the table in long arrays. |
|
TableMemAccess(MetaData md,
String pf,
int s)
Stores the table in long arrays. |
Method Summary | |
---|---|
void |
close()
Closes the table access. |
void |
delete(int pre,
int nr)
Deletes the specified number of entries from the database. |
void |
flush()
Flushes the table contents. |
void |
insert(int pre,
byte[] entries)
Inserts the specified entries into the database. |
int |
read1(int p,
int o)
Reads a byte value and returns it as an integer value. |
int |
read2(int p,
int o)
Reads a short value and returns it as an integer value. |
int |
read4(int p,
int o)
Reads an integer value. |
long |
read5(int p,
int o)
Reads a 5-byte value and returns it as a long value. |
void |
set(int pre,
byte[] entries)
Copies the specified entry into the database. |
void |
write1(int p,
int o,
int v)
Writes a byte value to the specified position. |
void |
write2(int p,
int o,
int v)
Writes a short value to the specified position. |
void |
write4(int p,
int o,
int v)
Writes an integer value to the specified position. |
void |
write5(int p,
int o,
long v)
Writes a 5-byte value to the specified position. |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public TableMemAccess(MetaData md, String pf, int s)
md
- meta datapf
- file prefixs
- array sizepublic TableMemAccess(MetaData md, String pf) throws IOException
md
- meta datapf
- filename
IOException
- IO ExceptionMethod Detail |
---|
public void flush()
TableAccess
flush
in class TableAccess
public void close() throws IOException
TableAccess
close
in class TableAccess
IOException
- I/O exceptionpublic int read1(int p, int o)
TableAccess
read1
in class TableAccess
p
- pre valueo
- offset
public int read2(int p, int o)
TableAccess
read2
in class TableAccess
p
- pre valueo
- offset
public int read4(int p, int o)
TableAccess
read4
in class TableAccess
p
- pre valueo
- offset
public long read5(int p, int o)
TableAccess
read5
in class TableAccess
p
- pre valueo
- offset
public void write1(int p, int o, int v)
TableAccess
write1
in class TableAccess
p
- pre valueo
- offsetv
- value to be writtenpublic void write2(int p, int o, int v)
TableAccess
write2
in class TableAccess
p
- pre valueo
- offsetv
- value to be writtenpublic void write4(int p, int o, int v)
TableAccess
write4
in class TableAccess
p
- pre valueo
- offsetv
- value to be writtenpublic void write5(int p, int o, long v)
TableAccess
write5
in class TableAccess
p
- pre valueo
- offsetv
- value to be writtenpublic void delete(int pre, int nr)
TableAccess
delete
in class TableAccess
pre
- pre value of the first node to deletenr
- number of entries to be deletedpublic void insert(int pre, byte[] entries)
TableAccess
insert
in class TableAccess
pre
- pre valueentries
- array of bytes containing the entries to insertpublic void set(int pre, byte[] entries)
TableAccess
set
in class TableAccess
pre
- pre valueentries
- array of bytes containing the entries to insert
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