| java.lang.Object
 com.db4o.io.IoAdapter
All known Subclasses: com.db4o.db4ounit.common.exceptions.ExceptionIOAdapter, com.db4o.util.io.win32.Win32IoAdapter, com.db4o.io.VanillaIoAdapter, com.db4o.io.CachedIoAdapter, com.db4o.util.io.NIOFileAdapter, com.db4o.io.MemoryIoAdapter, com.db4o.io.RandomAccessFileAdapter,
| IoAdapter | | abstract public class IoAdapter (Code) | | Base class for database file adapters, both for file and memory databases.
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| Method Summary | |
| public void | blockCopy(int oldAddress, int oldAddressOffset, int newAddress, int newAddressOffset, int length)
| | public void | blockSeek(int address)
| | public void | blockSeek(int address, int offset)
| | public void | blockSize(int blockSize)
| | public int | blockSize()
| | abstract public void | close()
| | public void | copy(long oldAddress, long newAddress, int length)
| | public IoAdapter | delegatedIoAdapter()
| | abstract public void | delete(String path)
| | abstract public boolean | exists(String path)
| | abstract public long | getLength()
| | abstract public IoAdapter | open(String path, boolean lockFile, long initialLength, boolean readOnly)
| | public int | read(byte[] buffer)
| | abstract public int | read(byte[] bytes, int length)
| | final protected long | regularAddress(int blockAddress, int blockAddressOffset)
| | abstract public void | seek(long pos)
| | abstract public void | sync()
| | public void | write(byte[] bytes)
| | abstract public void | write(byte[] buffer, int length)
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| blockCopy | | public void blockCopy(int oldAddress, int oldAddressOffset, int newAddress, int newAddressOffset, int length) throws Db4oIOException(Code) | | copies a block within a file in block mode
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| blockSeek | | public void blockSeek(int address) throws Db4oIOException(Code) | | sets the read/write pointer in the file using block mode
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| blockSeek | | public void blockSeek(int address, int offset) throws Db4oIOException(Code) | | sets the read/write pointer in the file using block mode
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| blockSize | | public void blockSize(int blockSize)(Code) | | outside call to set the block size of this adapter
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| blockSize | | public int blockSize()(Code) | | returns the block size currently used
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| copy | | public void copy(long oldAddress, long newAddress, int length) throws Db4oIOException(Code) | | copies a block within a file in absolute mode
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| delegatedIoAdapter | | public IoAdapter delegatedIoAdapter()(Code) | | Delegated IO Adapter
reference to itself |
| delete | | abstract public void delete(String path)(Code) | | deletes the given path from whatever 'file system' is addressed
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| exists | | abstract public boolean exists(String path)(Code) | | checks whether a file exists
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| getLength | | abstract public long getLength() throws Db4oIOException(Code) | | implement to return the absolute length of the file
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| read | | public int read(byte[] buffer) throws Db4oIOException(Code) | | reads a buffer at the seeked address
the number of bytes read and returned |
| read | | abstract public int read(byte[] bytes, int length) throws Db4oIOException(Code) | | implement to read a buffer at the seeked address
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| regularAddress | | final protected long regularAddress(int blockAddress, int blockAddressOffset)(Code) | | converts address and address offset to an absolute address
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| seek | | abstract public void seek(long pos) throws Db4oIOException(Code) | | implement to set the read/write pointer in the file, absolute mode
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| sync | | abstract public void sync() throws Db4oIOException(Code) | | implement to flush the file contents to storage
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| write | | abstract public void write(byte[] buffer, int length) throws Db4oIOException(Code) | | implement to write a buffer at the seeked address
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