ucar.ma2

Class ArrayStructureBB

java.lang.Object

ucar.ma2.Array

ucar.ma2.ArrayStructure

ucar.ma2.ArrayStructureBB

Direct Known Subclasses:

ArrayStructureBBpos

public class ArrayStructureBB
extends ArrayStructure

Concrete implementation of ArrayStructure, data storage is in a ByteBuffer, which is converted to member data on the fly. In order to use this, the records must have the same size, and the member offset must be the same for each record. Use StructureMembers.setStructureSize() to set the record size. Use StructureMembers.Member.setDataParam() to set the offset of the member from the start of each record. The member data will then be located in the BB at offset = recnum * getStructureSize() + member.getDataParam(). This defers object creation for efficiency. Use getArray() and getScalar() data accessors if possible.

     Structure pdata = (Structure) ncfile.findVariable( name);
     StructureMembers members = pdata.makeStructureMembers();
     members.findMember("value").setDataParam(0); // these are the offsets into the record
     members.findMember("x_start").setDataParam(2);
     members.findMember("y_start").setDataParam(4);
     members.findMember("direction").setDataParam(6);
     members.findMember("speed").setDataParam(8);
     int recsize = pos[1] - pos[0]; // each record  must be all the same size
     members.setStructureSize( recsize);
     ArrayStructureBB asbb = new ArrayStructureBB( members, new int[] { size}, bos, pos[0]);
 

For String members, you must store the Strings in the stringHeap. An integer index into the heap is used in the ByteBuffer.

Author:

caron

See Also:

Array

Nested Class Summary

Nested classes/interfaces inherited from class ucar.ma2.ArrayStructure

ArrayStructure.ArrayStructureIterator

Field Summary

Fields

Modifier and Type	Field and Description
protected int	bb_offset
protected java.nio.ByteBuffer	bbuffer

Fields inherited from class ucar.ma2.ArrayStructure

members, nelems, sdata

Fields inherited from class ucar.ma2.Array

indexCalc, rank, unsigned

Constructor Summary

Constructors

Constructor and Description
ArrayStructureBB(StructureMembers members, int[] shape) Create a new Array of type StructureData and the given members and shape.
ArrayStructureBB(StructureMembers members, int[] shape, java.nio.ByteBuffer bbuffer, int offset) Construct an ArrayStructureBB with the given ByteBuffer.

Method Summary

Methods

Modifier and Type	Method and Description
int	addObjectToHeap(java.lang.Object s)
protected int	calcOffsetSetOrder(int recnum, StructureMembers.Member m)
protected void	copyBytes(int recnum, StructureMembers.Member m, IndexIterator result)
protected void	copyChars(int recnum, StructureMembers.Member m, IndexIterator result)
protected void	copyDoubles(int recnum, StructureMembers.Member m, IndexIterator result)
protected void	copyFloats(int recnum, StructureMembers.Member m, IndexIterator result)
protected void	copyInts(int recnum, StructureMembers.Member m, IndexIterator result)
protected void	copyLongs(int recnum, StructureMembers.Member m, IndexIterator result)
protected void	copyObjects(int recnum, StructureMembers.Member m, IndexIterator result)
protected void	copyShorts(int recnum, StructureMembers.Member m, IndexIterator result)
ArraySequence	getArraySequence(int recnum, StructureMembers.Member m) Get member data of type ArraySequence
ArrayStructure	getArrayStructure(int recnum, StructureMembers.Member m) Get member data of type array of Structure.
java.nio.ByteBuffer	getByteBuffer() Return backing storage as a ByteBuffer
java.util.List<java.lang.Object>	getHeap() DO NOT MODIFY
byte[]	getJavaArrayByte(int recnum, StructureMembers.Member m) Get member data of type byte as a 1D array.
char[]	getJavaArrayChar(int recnum, StructureMembers.Member m) Get member data of type char as a 1D array.
double[]	getJavaArrayDouble(int recnum, StructureMembers.Member m) Get member data of type double as a 1D array.
float[]	getJavaArrayFloat(int recnum, StructureMembers.Member m) Get member data of type float as a 1D array.
int[]	getJavaArrayInt(int recnum, StructureMembers.Member m) Get member data of type int as a 1D array.
long[]	getJavaArrayLong(int recnum, StructureMembers.Member m) Get member data of type long as a 1D array.
short[]	getJavaArrayShort(int recnum, StructureMembers.Member m) Get member data of type short as a 1D array.
java.lang.String[]	getJavaArrayString(int recnum, StructureMembers.Member m) Get member data of type String as a 1D array.
byte	getScalarByte(int recnum, StructureMembers.Member m) Get scalar member data of type byte.
char	getScalarChar(int recnum, StructureMembers.Member m) Get scalar member data of type char.
double	getScalarDouble(int recnum, StructureMembers.Member m) Get scalar member data of type double.
float	getScalarFloat(int recnum, StructureMembers.Member m) Get scalar member data of type float.
int	getScalarInt(int recnum, StructureMembers.Member m) Get scalar member data of type int.
long	getScalarLong(int recnum, StructureMembers.Member m) Get scalar member data of type long.
short	getScalarShort(int recnum, StructureMembers.Member m) Get scalar member data of type short.
java.lang.String	getScalarString(int recnum, StructureMembers.Member m) Get member data of type String or char.
StructureData	getScalarStructure(int recnum, StructureMembers.Member m) Get member data of type Structure.
static void	main(java.lang.String[] argv)
protected StructureData	makeStructureData(ArrayStructure as, int index)
static int	setOffsets(StructureMembers members) Set the offsets, based on m.getSizeBytes().
void	showInternal(java.util.Formatter f, java.lang.String leadingSpace)

Methods inherited from class ucar.ma2.ArrayStructure

convertScalarDouble, convertScalarFloat, convertScalarInt, convertScalarLong, copy, copySequences, copyStructures, createView, extractMemberArray, findMember, getArray, getArrayObject, getBoolean, getBoolean, getByte, getByte, getChar, getChar, getDouble, getDouble, getElementType, getFloat, getFloat, getInt, getInt, getLong, getLong, getMembers, getObject, getObject, getScalarObject, getShort, getShort, getSizeBytes, getStorage, getStructureData, getStructureData, getStructureDataIterator, getStructureMemberNames, getStructureMembers, getStructureSize, setBoolean, setBoolean, setByte, setByte, setChar, setChar, setDouble, setDouble, setFloat, setFloat, setInt, setInt, setLong, setLong, setMemberArray, setObject, setObject, setShort, setShort, showInternalMembers

Methods inherited from class ucar.ma2.Array

arraycopy, copyTo1DJavaArray, copyToNDJavaArray, factory, factory, factory, factory, factory, factory, factoryConstant, flip, get1DJavaArray, getDataAsByteBuffer, getIndex, getIndexIterator, getIndexIteratorFast, getIndexPrivate, getRangeIterator, getRank, getShape, getSize, hasNext, isConstant, isUnsigned, makeArray, makeArray, makeArray, next, nextBoolean, nextByte, nextChar, nextDouble, nextFloat, nextInt, nextLong, nextShort, permute, reduce, reduce, resetLocalIterator, reshape, reshapeNoCopy, section, section, section, sectionNoReduce, sectionNoReduce, setUnsigned, shapeToString, slice, toString, transpose

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

bbuffer

protected java.nio.ByteBuffer bbuffer

bb_offset

protected int bb_offset

Constructor Detail

ArrayStructureBB

public ArrayStructureBB(StructureMembers members,
                int[] shape)

Create a new Array of type StructureData and the given members and shape. Generally, you extract the byte array and fill it:

     byte [] result = (byte []) structureArray.getStorage(); 

Parameters:

members - a description of the structure members

shape - the shape of the Array.

ArrayStructureBB

public ArrayStructureBB(StructureMembers members,
                int[] shape,
                java.nio.ByteBuffer bbuffer,
                int offset)

Construct an ArrayStructureBB with the given ByteBuffer.

Parameters:

members - the list of structure members.

shape - the shape of the structure array

bbuffer - the data is stored in this ByteBuffer. bbuffer.order must already be set.

offset - offset from the start of the ByteBufffer to the first record.

Method Detail

setOffsets

public static int setOffsets(StructureMembers members)

Set the offsets, based on m.getSizeBytes(). Also sets members.setStructureSize().

Parameters:

members - set offsets for these members

Returns:

the total size

makeStructureData

protected StructureData makeStructureData(ArrayStructure as,
                              int index)

Specified by:

makeStructureData in class ArrayStructure

getByteBuffer

public java.nio.ByteBuffer getByteBuffer()

Return backing storage as a ByteBuffer

Returns:

backing storage as a ByteBuffer

getScalarDouble

public double getScalarDouble(int recnum,
                     StructureMembers.Member m)

Description copied from class: ArrayStructure

Get scalar member data of type double.

Overrides:

getScalarDouble in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type double.

Returns:

scalar double value

getJavaArrayDouble

public double[] getJavaArrayDouble(int recnum,
                          StructureMembers.Member m)

Description copied from class: ArrayStructure

Get member data of type double as a 1D array. The member data may be any rank.

Overrides:

getJavaArrayDouble in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type double.

Returns:

double[]

copyDoubles

protected void copyDoubles(int recnum,
               StructureMembers.Member m,
               IndexIterator result)

Overrides:

copyDoubles in class ArrayStructure

getScalarFloat

public float getScalarFloat(int recnum,
                   StructureMembers.Member m)

Description copied from class: ArrayStructure

Get scalar member data of type float.

Overrides:

getScalarFloat in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type float.

Returns:

scalar double value

getJavaArrayFloat

public float[] getJavaArrayFloat(int recnum,
                        StructureMembers.Member m)

Description copied from class: ArrayStructure

Get member data of type float as a 1D array.

Overrides:

getJavaArrayFloat in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type float.

Returns:

float[]

copyFloats

protected void copyFloats(int recnum,
              StructureMembers.Member m,
              IndexIterator result)

Overrides:

copyFloats in class ArrayStructure

getScalarByte

public byte getScalarByte(int recnum,
                 StructureMembers.Member m)

Description copied from class: ArrayStructure

Get scalar member data of type byte.

Overrides:

getScalarByte in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type byte.

Returns:

scalar double value

getJavaArrayByte

public byte[] getJavaArrayByte(int recnum,
                      StructureMembers.Member m)

Description copied from class: ArrayStructure

Get member data of type byte as a 1D array.

Overrides:

getJavaArrayByte in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type byte.

Returns:

byte[]

copyBytes

protected void copyBytes(int recnum,
             StructureMembers.Member m,
             IndexIterator result)

Overrides:

copyBytes in class ArrayStructure

getScalarShort

public short getScalarShort(int recnum,
                   StructureMembers.Member m)

Description copied from class: ArrayStructure

Get scalar member data of type short.

Overrides:

getScalarShort in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type short.

Returns:

scalar double value

getJavaArrayShort

public short[] getJavaArrayShort(int recnum,
                        StructureMembers.Member m)

Description copied from class: ArrayStructure

Get member data of type short as a 1D array.

Overrides:

getJavaArrayShort in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type float.

Returns:

short[]

copyShorts

protected void copyShorts(int recnum,
              StructureMembers.Member m,
              IndexIterator result)

Overrides:

copyShorts in class ArrayStructure

getScalarInt

public int getScalarInt(int recnum,
               StructureMembers.Member m)

Description copied from class: ArrayStructure

Get scalar member data of type int.

Overrides:

getScalarInt in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type int.

Returns:

scalar double value

getJavaArrayInt

public int[] getJavaArrayInt(int recnum,
                    StructureMembers.Member m)

Description copied from class: ArrayStructure

Get member data of type int as a 1D array.

Overrides:

getJavaArrayInt in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type int.

Returns:

int[]

copyInts

protected void copyInts(int recnum,
            StructureMembers.Member m,
            IndexIterator result)

Overrides:

copyInts in class ArrayStructure

getScalarLong

public long getScalarLong(int recnum,
                 StructureMembers.Member m)

Description copied from class: ArrayStructure

Get scalar member data of type long.

Overrides:

getScalarLong in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type long.

Returns:

scalar double value

getJavaArrayLong

public long[] getJavaArrayLong(int recnum,
                      StructureMembers.Member m)

Description copied from class: ArrayStructure

Get member data of type long as a 1D array.

Overrides:

getJavaArrayLong in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type long.

Returns:

long[]

copyLongs

protected void copyLongs(int recnum,
             StructureMembers.Member m,
             IndexIterator result)

Overrides:

copyLongs in class ArrayStructure

getScalarChar

public char getScalarChar(int recnum,
                 StructureMembers.Member m)

Description copied from class: ArrayStructure

Get scalar member data of type char.

Overrides:

getScalarChar in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type char.

Returns:

scalar double value

getJavaArrayChar

public char[] getJavaArrayChar(int recnum,
                      StructureMembers.Member m)

Description copied from class: ArrayStructure

Get member data of type char as a 1D array.

Overrides:

getJavaArrayChar in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type char.

Returns:

char[]

copyChars

protected void copyChars(int recnum,
             StructureMembers.Member m,
             IndexIterator result)

Overrides:

copyChars in class ArrayStructure

getScalarString

public java.lang.String getScalarString(int recnum,
                               StructureMembers.Member m)

Description copied from class: ArrayStructure

Get member data of type String or char.

Overrides:

getScalarString in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type String or char.

Returns:

scalar String value

getJavaArrayString

public java.lang.String[] getJavaArrayString(int recnum,
                                    StructureMembers.Member m)

Description copied from class: ArrayStructure

Get member data of type String as a 1D array.

Overrides:

getJavaArrayString in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type String.

Returns:

String[]

copyObjects

protected void copyObjects(int recnum,
               StructureMembers.Member m,
               IndexIterator result)

Overrides:

copyObjects in class ArrayStructure

getScalarStructure

public StructureData getScalarStructure(int recnum,
                               StructureMembers.Member m)

Description copied from class: ArrayStructure

Get member data of type Structure.

Overrides:

getScalarStructure in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type Structure.

Returns:

scalar StructureData

getArrayStructure

public ArrayStructure getArrayStructure(int recnum,
                               StructureMembers.Member m)

Description copied from class: ArrayStructure

Get member data of type array of Structure.

Overrides:

getArrayStructure in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type Structure.

Returns:

nested ArrayStructure.

getArraySequence

public ArraySequence getArraySequence(int recnum,
                             StructureMembers.Member m)

Description copied from class: ArrayStructure

Get member data of type ArraySequence

Overrides:

getArraySequence in class ArrayStructure

Parameters:

recnum - get data from the recnum-th StructureData of the ArrayStructure. Must be less than getSize();

m - get data from this StructureMembers.Member. Must be of type Structure.

Returns:

nested ArrayStructure.

calcOffsetSetOrder

protected int calcOffsetSetOrder(int recnum,
                     StructureMembers.Member m)

addObjectToHeap

public int addObjectToHeap(java.lang.Object s)

getHeap

public java.util.List<java.lang.Object> getHeap()

DO NOT MODIFY

Returns:

heap

showInternal

public void showInternal(java.util.Formatter f,
                java.lang.String leadingSpace)

Overrides:

showInternal in class ArrayStructure

main

public static void main(java.lang.String[] argv)