| java.lang.Object
 org.openrdf.sail.nativerdf.datastore.DataFile
| DataFile | | public class DataFile (Code) | | Class supplying access to a data file. A data file stores data sequentially.
Each entry starts with the entry's length (4 bytes), followed by the data
itself. File offsets are used to identify entries.
author:
Arjohn Kampman |
| Inner Class :public class DataIterator | |
| Method Summary | |
| public void | clear()
Discards all stored data. | | public void | close()
Closes the data file, releasing any file locks that it might have. | | public byte[] | getData(long offset)
Gets the data that is stored at the specified offset.
Parameters:
offset - An offset in the data file, must be larger than 0. | | public File | getFile()
| | public DataIterator | iterator()
Gets an iterator that can be used to iterate over all stored data. | | public long | storeData(byte[] data)
Stores the specified data and returns the byte-offset at which it has been
stored.
Parameters:
data - The data to store, must not be null. | | public void | sync()
Syncs any unstored data to the hash file. |
| getData | | public byte[] getData(long offset) throws IOException(Code) | | Gets the data that is stored at the specified offset.
Parameters:
offset - An offset in the data file, must be larger than 0. The data that was found on the specified offset.
exception:
IOException - If an I/O error occurred. |
| iterator | | public DataIterator iterator()(Code) | | Gets an iterator that can be used to iterate over all stored data.
a DataIterator. |
| storeData | | public long storeData(byte[] data) throws IOException(Code) | | Stores the specified data and returns the byte-offset at which it has been
stored.
Parameters:
data - The data to store, must not be null. The byte-offset in the file at which the data was stored. |
| sync | | public void sync() throws IOException(Code) | | Syncs any unstored data to the hash file.
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