| java.lang.Object
 com.quadcap.sql.file.SubPage
| SubPage | | public class SubPage implements Page(Code) | | This class implements a page allocated by a sub-page allocator.
author:
Stan Bailes |
| Method Summary | |
| public void | clear()
| | public void | decrRefCount()
| | public long | getPageNum()
| | public int | read(int pos, byte[] pbuf, int offset, int len)
Read a range of bytes from the page. | | public int | readInt(int pos)
Read an integer (4-byte) value from the page. | | public long | readLong(int pos)
Read a long (8-byte) value from the page. | | public void | takeData(Page p)
Move the contents of the other page to this page, and zero out
the other page. | | public String | toString()
| | public int | write(int pos, byte[] pbuf, int offset, int len)
Write a range of bytes to the page. | | public void | writeInt(int pos, int val)
Write an integer (4-byte) value to the page. | | public void | writeLong(int pos, long val)
Write a long (8-byte) value to the page. |
| pageOffset | | int pageOffset(Code) | | |
| clear | | public void clear()(Code) | | |
| decrRefCount | | public void decrRefCount()(Code) | | |
| getPageNum | | public long getPageNum()(Code) | | Return this page's number
|
| read | | public int read(int pos, byte[] pbuf, int offset, int len)(Code) | | Read a range of bytes from the page.
Parameters:
pos - the offset in the page of the first byte to read
Parameters:
pbuf - the buffer into which the bytes are placed.
Parameters:
offset - the offset in pbuf where the first byteis placed.
Parameters:
len - the number of bytes to read |
| readInt | | public int readInt(int pos)(Code) | | Read an integer (4-byte) value from the page.
Parameters:
pos - the offset in the page of the integer. |
| readLong | | public long readLong(int pos)(Code) | | Read a long (8-byte) value from the page.
Parameters:
pos - the offset in the page of the long. |
| takeData | | public void takeData(Page p)(Code) | | Move the contents of the other page to this page, and zero out
the other page.
|
| write | | public int write(int pos, byte[] pbuf, int offset, int len)(Code) | | Write a range of bytes to the page.
Parameters:
pos - the offset in the page of the first byte to write
Parameters:
pbuf - the buffer from which the bytes are obtained
Parameters:
offset - the offset in pbuf of the first byteto write
Parameters:
len - the number of bytes to write |
| writeInt | | public void writeInt(int pos, int val)(Code) | | Write an integer (4-byte) value to the page.
Parameters:
pos - the offset in the page of the integer.
Parameters:
val - the integer value to write. |
| writeLong | | public void writeLong(int pos, long val)(Code) | | Write a long (8-byte) value to the page.
Parameters:
pos - the offset in the page of the long.
Parameters:
val - the long value to write. |
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