ucar.netcdf
Class RemoteAccessorImpl

java.lang.Object
  java.rmi.server.RemoteObject
      ucar.netcdf.RemoteAccessorImpl

All Implemented Interfaces:

java.io.Serializable, java.rmi.Remote, Accessor, RemoteAccessor

public class RemoteAccessorImpl
extends java.rmi.server.RemoteObject
implements RemoteAccessor

RemoteAccessorImpl is a UnicastRemoteObject (RMI service) which implements ucar.multiarray.RemoteAccessor using the proxy pattern. Accessor methods are forwarded to the adaptee and adaptee exceptions are wrapped in java.rmi.ServerException.

See Also:

Serialized Form

Field Summary

Fields inherited from class java.rmi.server.RemoteObject

ref

Constructor Summary

RemoteAccessorImpl(NetcdfRemoteProxyImpl svr, Accessor adaptee)
Construct a UnicastRemoteObject which acts as an Accessor proxy.

Method Summary

void	copyin(int[] origin, MultiArray source) Aggregate write access.
MultiArray	copyout(int[] origin, int[] shape) Aggregate read access.
java.lang.Object	get(int[] index) Get (read) the array element at index.
boolean	getBoolean(int[] index) Get the array element at index, as a boolean.
byte	getByte(int[] index) Get the array element at index, as a byte.
char	getChar(int[] index) Get the array element at index, as a char.
double	getDouble(int[] index) Get the array element at index, as a double.
float	getFloat(int[] index) Get the array element at index, as a float.
int	getInt(int[] index) Get the array element at index, as an int.
long	getLong(int[] index) Get the array element at index, as a long.
short	getShort(int[] index) Get the array element at index, as a short.
void	set(int[] index, java.lang.Object value) Set (modify, write) the array element at index to the specified value.
void	setBoolean(int[] index, boolean value) Set the array element at index to the specified boolean value.
void	setByte(int[] index, byte value) Set the array element at index to the specified byte value.
void	setChar(int[] index, char value) Set the array element at index to the specified char value.
void	setDouble(int[] index, double value) Set the array element at index to the specified double value.
void	setFloat(int[] index, float value) Set the array element at index to the specified float value.
void	setInt(int[] index, int value) Set the array element at index to the specified int value.
void	setLong(int[] index, long value) Set the array element at index to the specified long value.
void	setShort(int[] index, short value) Set the array element at index to the specified short value.
java.lang.Object	toArray() Returns a new array containing all of the elements in this MultiArray.
java.lang.Object	toArray(java.lang.Object dst, int[] origin, int[] shape) Returns an array containing elements of this MultiArray specified by origin and shape, possibly converting the component type.

Methods inherited from class java.rmi.server.RemoteObject

equals, getRef, hashCode, toString, toStub

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

RemoteAccessorImpl

public RemoteAccessorImpl(NetcdfRemoteProxyImpl svr,
                          Accessor adaptee)
                   throws java.rmi.RemoteException

Construct a UnicastRemoteObject which acts as an Accessor proxy.

Parameters:

svr - NetcdfRemoteProxyImpl which owns this. May be null.

adaptee - Accessor to which the Accessor methods of this are forwarded.

Throws:

java.rmi.RemoteException

Method Detail

get

public java.lang.Object get(int[] index)
                     throws java.rmi.RemoteException

Description copied from interface: Accessor

Get (read) the array element at index. The returned value is wrapped in an object if it has a primitive type. Length of index must be greater than or equal to the rank of this. Values of index components must be less than corresponding values from getLengths().

Specified by:

get in interface Accessor

Specified by:

get in interface RemoteAccessor

Parameters:

index - MultiArray index

Returns:

Object value at index

Throws:

java.rmi.RemoteException

getBoolean

public boolean getBoolean(int[] index)
                   throws java.rmi.RemoteException

Description copied from interface: Accessor

Get the array element at index, as a boolean.

Specified by:

getBoolean in interface Accessor

Specified by:

getBoolean in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.get(int[])

getChar

public char getChar(int[] index)
             throws java.rmi.RemoteException

Description copied from interface: Accessor

Get the array element at index, as a char.

Specified by:

getChar in interface Accessor

Specified by:

getChar in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.get(int[])

getByte

public byte getByte(int[] index)
             throws java.rmi.RemoteException

Description copied from interface: Accessor

Get the array element at index, as a byte.

Specified by:

getByte in interface Accessor

Specified by:

getByte in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.get(int[])

getShort

public short getShort(int[] index)
               throws java.rmi.RemoteException

Description copied from interface: Accessor

Get the array element at index, as a short.

Specified by:

getShort in interface Accessor

Specified by:

getShort in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.get(int[])

getInt

public int getInt(int[] index)
           throws java.rmi.RemoteException

Description copied from interface: Accessor

Get the array element at index, as an int.

Specified by:

getInt in interface Accessor

Specified by:

getInt in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.get(int[])

getLong

public long getLong(int[] index)
             throws java.rmi.RemoteException

Description copied from interface: Accessor

Get the array element at index, as a long.

Specified by:

getLong in interface Accessor

Specified by:

getLong in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.get(int[])

getFloat

public float getFloat(int[] index)
               throws java.rmi.RemoteException

Description copied from interface: Accessor

Get the array element at index, as a float.

Specified by:

getFloat in interface Accessor

Specified by:

getFloat in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.get(int[])

getDouble

public double getDouble(int[] index)
                 throws java.rmi.RemoteException

Description copied from interface: Accessor

Get the array element at index, as a double.

Specified by:

getDouble in interface Accessor

Specified by:

getDouble in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.get(int[])

set

public void set(int[] index,
                java.lang.Object value)
         throws java.rmi.RemoteException

Description copied from interface: Accessor

Set (modify, write) the array element at index to the specified value. If the array has a primitive component type, the value may be unwrapped. Values of index components must be less than corresponding values from getLengths().

Specified by:

set in interface Accessor

Specified by:

set in interface RemoteAccessor

Parameters:

index - MultiArray index

value - the new value.

Throws:

java.rmi.RemoteException

setBoolean

public void setBoolean(int[] index,
                       boolean value)
                throws java.rmi.RemoteException

Description copied from interface: Accessor

Set the array element at index to the specified boolean value.

Specified by:

setBoolean in interface Accessor

Specified by:

setBoolean in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.set(int[], java.lang.Object)

setChar

public void setChar(int[] index,
                    char value)
             throws java.rmi.RemoteException

Description copied from interface: Accessor

Set the array element at index to the specified char value.

Specified by:

setChar in interface Accessor

Specified by:

setChar in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.set(int[], java.lang.Object)

setByte

public void setByte(int[] index,
                    byte value)
             throws java.rmi.RemoteException

Description copied from interface: Accessor

Set the array element at index to the specified byte value.

Specified by:

setByte in interface Accessor

Specified by:

setByte in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.set(int[], java.lang.Object)

setShort

public void setShort(int[] index,
                     short value)
              throws java.rmi.RemoteException

Description copied from interface: Accessor

Set the array element at index to the specified short value.

Specified by:

setShort in interface Accessor

Specified by:

setShort in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.set(int[], java.lang.Object)

setInt

public void setInt(int[] index,
                   int value)
            throws java.rmi.RemoteException

Description copied from interface: Accessor

Set the array element at index to the specified int value.

Specified by:

setInt in interface Accessor

Specified by:

setInt in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.set(int[], java.lang.Object)

setLong

public void setLong(int[] index,
                    long value)
             throws java.rmi.RemoteException

Description copied from interface: Accessor

Set the array element at index to the specified long value.

Specified by:

setLong in interface Accessor

Specified by:

setLong in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.set(int[], java.lang.Object)

setFloat

public void setFloat(int[] index,
                     float value)
              throws java.rmi.RemoteException

Description copied from interface: Accessor

Set the array element at index to the specified float value.

Specified by:

setFloat in interface Accessor

Specified by:

setFloat in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.set(int[], java.lang.Object)

setDouble

public void setDouble(int[] index,
                      double value)
               throws java.rmi.RemoteException

Description copied from interface: Accessor

Set the array element at index to the specified double value.

Specified by:

setDouble in interface Accessor

Specified by:

setDouble in interface RemoteAccessor

Throws:

java.rmi.RemoteException

See Also:

Accessor.set(int[], java.lang.Object)

copyout

public MultiArray copyout(int[] origin,
                          int[] shape)
                   throws java.rmi.RemoteException

Description copied from interface: Accessor

Aggregate read access. Return a new MultiArray of the same componentType as this, and with shape as specified, which is initialized to the values of this, as clipped to (origin, origin + shape).

It is easier to implement than to specify :-).

The main reason to implement this instead of using the equivalent proxy is for remote or file access.

assert(origin[ii] + shape[ii] <= lengths[ii]);

Specified by:

copyout in interface Accessor

Specified by:

copyout in interface RemoteAccessor

Parameters:

origin - int array specifying the starting index.

shape - int array specifying the extents in each dimension. This becomes the shape of the return.

Returns:

the MultiArray with the specified shape

Throws:

java.rmi.RemoteException

copyin

public void copyin(int[] origin,
                   MultiArray source)
            throws java.rmi.RemoteException

Description copied from interface: Accessor

Aggregate write access. Given a MultiArray, copy it into this at the specified starting index. TODO: clearer specification.

Hopefully this member can be optimized in various situations.

assert(origin[ii] + (source.getLengths())[ii] <= (getLengths())[ii]);

Specified by:

copyin in interface Accessor

Specified by:

copyin in interface RemoteAccessor

Parameters:

origin - int array specifying the starting index.

source - MultiArray with the same componentType as this and shape smaller than this.getLengths() - origin

Throws:

java.rmi.RemoteException

toArray

public java.lang.Object toArray()
                         throws java.rmi.RemoteException

Description copied from interface: Accessor

Returns a new array containing all of the elements in this MultiArray. The returned array is one dimensional. The order of the elements in the result is natural, as if we used an IndexIterator to step through the elements of this MultiArray. The component type of the result is the same as this.

This method acts as bridge between array-based and MultiArray-based APIs.

This method is functionally equivalent to

                Object anArray = Array.newInstance(getComponentType(), 1);
                int [] origin = new int[getRank()]
                int [] shape = getDimensions();
                return toArray(anArray, origin, shape);
 

Specified by:

toArray in interface Accessor

Specified by:

toArray in interface RemoteAccessor

Returns:

a one dimensional Array containing all the elements in this MultiArray

Throws:

java.rmi.RemoteException

toArray

public java.lang.Object toArray(java.lang.Object dst,
                                int[] origin,
                                int[] shape)
                         throws java.rmi.RemoteException

Description copied from interface: Accessor

Returns an array containing elements of this MultiArray specified by origin and shape, possibly converting the component type. The returned array is one dimensional. The order of the elements in the result is natural, as if we used an IndexIterator to step through the elements of this MultiArray.

The anArray argument should be an array. If it is large enough to contain the output, it is used and no new storage is allocated. Otherwise, new storage is allocated with the same component type as the argument, and the data is copied into it.

This method acts as bridge between array-based and MultiArray-based APIs.

This method is similar to copyout(origin, shape).toArray(), but avoids a copy operation and (potentially) an allocation.

NOTE: Implementation of type conversion is deferred until JDK 1.2. Currently, the componentType of anArray must be the same as this

Specified by:

toArray in interface Accessor

Specified by:

toArray in interface RemoteAccessor

Returns:

a one dimensional Array containing the specified elements

Throws:

java.rmi.RemoteException