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java.lang.Objectorg.basex.io.TableAccess
public abstract class TableAccess
This abstract class defines the methods for accessing the database table representation.
Constructor Summary | |
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TableAccess()
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Method Summary | |
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abstract void |
close()
Closes the table access. |
abstract void |
delete(int pre,
int nr)
Delete a range of entries. |
abstract void |
flush()
Flushes the table contents. |
abstract void |
insert(int pre,
byte[] entries)
Insert entries. |
abstract int |
read1(int p,
int o)
Reads a byte from the specified position and returns it as integer. |
abstract int |
read2(int p,
int o)
Reads a short value from the specified position and returns it as integer. |
abstract int |
read4(int p,
int o)
Reads an integer value from the specified position. |
abstract long |
read5(int p,
int o)
Reads an integer value from the specified position. |
abstract void |
write1(int p,
int o,
int v)
Writes a byte to the specified position. |
abstract void |
write2(int p,
int o,
int v)
Writes 2 bytes to the specified position. |
abstract void |
write4(int p,
int o,
int v)
Writes an integer value to the specified position. |
abstract 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 TableAccess()
Method Detail |
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public abstract int read1(int p, int o)
p
- pre valueo
- offset
public abstract int read2(int p, int o)
p
- pre valueo
- offset
public abstract int read4(int p, int o)
p
- pre valueo
- offset
public abstract long read5(int p, int o)
p
- pre valueo
- offset
public abstract void write1(int p, int o, int v)
p
- pre valueo
- offsetv
- value to be writtenpublic abstract void write2(int p, int o, int v)
p
- pre valueo
- offsetv
- value to be writtenpublic abstract void write4(int p, int o, int v)
p
- pre valueo
- offsetv
- value to be writtenpublic abstract void write5(int p, int o, long v)
p
- pre valueo
- offsetv
- value to be writtenpublic abstract void delete(int pre, int nr)
pre
- pre value of the first node to deletenr
- number of entries to be deletedpublic abstract void insert(int pre, byte[] entries)
pre
- pre value of node to insert afterentries
- array of bytes containing the entries to insertpublic abstract void flush() throws java.io.IOException
java.io.IOException
- in case of write errorspublic abstract void close() throws java.io.IOException
java.io.IOException
- in case of write errors
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