The Java Embedded Database Device Subclasses

The subclasses below define the specific type of Device instance.

For an overview see page Java Database Class

Class Definitions

 
    public static class PrivateMemoryDevice extends Device
    {
        public PrivateMemoryDevice(Kind kind, long size) 
        {
            super(kind);
            this.size = size;
        }
        long  size;
        long  allocatedMemory;
    };
     
    public static class SharedMemoryDevice extends Device
    {
        public SharedMemoryDevice(Kind kind, String name, long hint, long size) 
        {
            super(kind);
            this.name = name;
            this.hint = hint;
            this.size = size;
        }
         
        String name;
        long   hint;
        long   size;
    };
     
    public static class FileDevice extends Device
    {
        public FileDevice(Kind kind, String path) 
        {
            super(kind);
            this.path = path;
        }
         
        public String path;
    };
     
    public static class MultiFileDevice extends FileDevice
    {
        public MultiFileDevice(Kind kind, String path, long size) 
        {
            super(kind, path);
            this.size = size;
        }
         
        long   size;
    };
     
    public static class RaidDevice extends FileDevice
    {
        public RaidDevice(Kind kind, String path, int raidLevel) 
        {
            super(kind, path);
            this.raidLevel = raidLevel;
        }
         
        int raidLevel;
    };
     

Definitions:

size The memory size in bytes of the memory block, or the multifile segment size for a MultiFileDevice (ignored for last segment)
allocatedMemory A pointer to the allocated memory for a PrivateMemoryDevice
hint The proposed region address for a SharedMemoryDevice
path The file path for a FileDevice
raidLevel The raid level for a RaidDevice: 0 - (RAID-0: striping) or 1 (RAID-1: mirroring)