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Дата изменения: Tue Dec 28 20:59:06 2004
Дата индексирования: Sun Apr 10 00:17:29 2016
Кодировка:
: Class RemoteAccessorImpl

ucar.netcdf
Class RemoteAccessorImpl

java.lang.Object
  |
  +--java.rmi.server.RemoteObject
        |
        +--ucar.netcdf.RemoteAccessorImpl
All Implemented Interfaces:
Accessor, java.rmi.Remote, RemoteAccessor, java.io.Serializable

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

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.
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
Parameters:
index - MultiArray index
Returns:
Object value at index
Throws:
NullPointerException - If the argument is null.
java.lang.IllegalArgumentException - If the array length of index is too small
java.lang.ArrayIndexOutOfBoundsException - If an index component argument is negative, or if it is greater than or equal to the corresponding dimension length.

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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
Parameters:
index - MultiArray index
value - the new value.
Throws:
NullPointerException - If the index argument is null, or if the array has a primitive component type and the value argument is null
java.lang.IllegalArgumentException - If the array length of index is too small
java.lang.ArrayIndexOutOfBoundsException - If an index component argument is negative, or if it is greater than or equal to the corresponding dimension length.

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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
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

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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
Parameters:
origin - int array specifying the starting index.
source - MultiArray with the same componentType as this and shape smaller than this.getLengths() - origin

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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
Returns:
a one dimensional Array containing all the elements in this MultiArray

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 RemoteAccessor
Following copied from interface: ucar.multiarray.Accessor
Returns:
a one dimensional Array containing the specified elements