ucar.ma2.ArraySequence Maven / Gradle / Ivy
/*
* Copyright 1998-2014 University Corporation for Atmospheric Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
*
* Access and use of this software shall impose the following obligations
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* any fee or cost, to use, copy, modify, alter, enhance and distribute
* this software, and any derivative works thereof, and its supporting
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*/
package ucar.ma2;
import ucar.nc2.util.Indent;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Formatter;
/**
* ArraySequence is the way to contain the data for a Sequence, using a StructureDataIterator.
* A Sequence is a one-dimensional Structure with indeterminate length.
* The only data access is through getStructureIterator().
* So an ArraySequence is really a wrapper around a StructureDataIterator, adapting it to an Array.
*
* @author caron
* @since Feb 27, 2008
*/
public class ArraySequence extends ArrayStructure {
protected StructureDataIterator iter; // never use private
protected ArraySequence(StructureMembers sm, int[] shape) {
super(sm, shape);
}
/**
* Constructor
*
* @param members the members
* @param iter the iterator
* @param nelems iterator count, may be missing (<0)
*/
public ArraySequence(StructureMembers members, StructureDataIterator iter, int nelems) {
super(members, new int[]{0});
this.iter = iter;
this.nelems = nelems;
}
/**
* n
*
* @return StructureDataIterator.class
*/
@Override
public Class getElementType() {
return StructureDataIterator.class;
}
@Override
public StructureDataIterator getStructureDataIterator() { // throws java.io.IOException {
iter = iter.reset();
return iter;
}
public int getStructureDataCount() {
return nelems;
}
@Override
public long getSizeBytes() {
return nelems * members.getStructureSize(); // LOOK we may not know the count ???
}
@Override
protected StructureData makeStructureData(ArrayStructure as, int index) {
throw new UnsupportedOperationException("Cannot subset a Sequence");
}
@Override
public Array extractMemberArray(StructureMembers.Member proxym) throws IOException {
if (proxym.getDataArray() != null)
return proxym.getDataArray();
DataType dataType = proxym.getDataType();
boolean isScalar = (proxym.getSize() == 1) || (dataType == DataType.SEQUENCE);
// combine the shapes
int[] mshape = proxym.getShape();
int rrank = 1 + mshape.length;
int[] rshape = new int[rrank];
rshape[0] = nelems;
System.arraycopy(mshape, 0, rshape, 1, mshape.length);
if (nelems < 0)
return extractMemberArrayFromIteration(proxym, rshape);
// create an empty array to hold the result
Array result;
if (dataType == DataType.STRUCTURE) {
StructureMembers membersw = new StructureMembers(proxym.getStructureMembers()); // no data arrays get propagated
result = new ArrayStructureW(membersw, rshape);
} else {
result = Array.factory(dataType.getPrimitiveClassType(), rshape);
}
StructureDataIterator sdataIter = getStructureDataIterator();
IndexIterator resultIter = result.getIndexIterator();
try {
while (sdataIter.hasNext()) {
StructureData sdata = sdataIter.next();
StructureMembers.Member realm = sdata.getStructureMembers().findMember(proxym.getName());
if (isScalar) {
if (dataType == DataType.DOUBLE)
resultIter.setDoubleNext(sdata.getScalarDouble(realm));
else if (dataType == DataType.FLOAT)
resultIter.setFloatNext(sdata.getScalarFloat(realm));
else if ((dataType == DataType.BYTE) || (dataType == DataType.ENUM1))
resultIter.setByteNext(sdata.getScalarByte(realm));
else if ((dataType == DataType.SHORT) || (dataType == DataType.ENUM2))
resultIter.setShortNext(sdata.getScalarShort(realm));
else if ((dataType == DataType.INT) || (dataType == DataType.ENUM4))
resultIter.setIntNext(sdata.getScalarInt(realm));
else if (dataType == DataType.LONG)
resultIter.setLongNext(sdata.getScalarLong(realm));
else if (dataType == DataType.CHAR)
resultIter.setCharNext(sdata.getScalarChar(realm));
else if (dataType == DataType.STRING)
resultIter.setObjectNext(sdata.getScalarString(realm));
else if (dataType == DataType.STRUCTURE)
resultIter.setObjectNext(sdata.getScalarStructure(realm));
else if (dataType == DataType.SEQUENCE)
resultIter.setObjectNext(sdata.getArraySequence(realm));
} else {
if (dataType == DataType.DOUBLE) {
double[] data = sdata.getJavaArrayDouble(realm);
for (double aData : data) resultIter.setDoubleNext(aData);
} else if (dataType == DataType.FLOAT) {
float[] data = sdata.getJavaArrayFloat(realm);
for (float aData : data) resultIter.setFloatNext(aData);
} else if ((dataType == DataType.BYTE) || (dataType == DataType.ENUM1)) {
byte[] data = sdata.getJavaArrayByte(realm);
for (byte aData : data) resultIter.setByteNext(aData);
} else if ((dataType == DataType.SHORT) || (dataType == DataType.ENUM2)) {
short[] data = sdata.getJavaArrayShort(realm);
for (short aData : data) resultIter.setShortNext(aData);
} else if ((dataType == DataType.INT) || (dataType == DataType.ENUM4)) {
int[] data = sdata.getJavaArrayInt(realm);
for (int aData : data) resultIter.setIntNext(aData);
} else if (dataType == DataType.LONG) {
long[] data = sdata.getJavaArrayLong(realm);
for (long aData : data) resultIter.setLongNext(aData);
} else if (dataType == DataType.CHAR) {
char[] data = sdata.getJavaArrayChar(realm);
for (char aData : data) resultIter.setCharNext(aData);
} else if (dataType == DataType.STRING) {
String[] data = sdata.getJavaArrayString(realm);
for (String aData : data) resultIter.setObjectNext(aData);
} else if (dataType == DataType.STRUCTURE) {
ArrayStructure as = sdata.getArrayStructure(realm);
StructureDataIterator innerIter = as.getStructureDataIterator();
while (innerIter.hasNext())
resultIter.setObjectNext(innerIter.next());
}
// LOOK SEQUENCE, OPAQUE ??
}
}
} finally {
sdataIter.finish();
}
return result;
}
// when we dont know how many in the iteration
private Array extractMemberArrayFromIteration(StructureMembers.Member proxym, int[] rshape) throws IOException {
DataType dataType = proxym.getDataType();
StructureDataIterator sdataIter = getStructureDataIterator();
Object dataArray = null;
int count = 0;
int initial = 1000;
try {
if (dataType == DataType.DOUBLE) {
ArrayList result = new ArrayList(initial);
while (sdataIter.hasNext()) {
StructureData sdata = sdataIter.next();
StructureMembers.Member realm = sdata.getStructureMembers().findMember(proxym.getName());
double[] data = sdata.getJavaArrayDouble(realm);
for (double aData : data) result.add(aData);
count++;
}
double[] da = new double[result.size()];
int i = 0;
for (Double d : result) da[i++] = d;
dataArray = da;
} else if (dataType == DataType.FLOAT) {
ArrayList result = new ArrayList(initial);
while (sdataIter.hasNext()) {
StructureData sdata = sdataIter.next();
StructureMembers.Member realm = sdata.getStructureMembers().findMember(proxym.getName());
float[] data = sdata.getJavaArrayFloat(realm);
for (float aData : data) result.add(aData);
count++;
}
float[] da = new float[result.size()];
int i = 0;
for (Float d : result) da[i++] = d;
dataArray = da;
} else if ((dataType == DataType.BYTE) || (dataType == DataType.ENUM1)) {
ArrayList result = new ArrayList(initial);
while (sdataIter.hasNext()) {
StructureData sdata = sdataIter.next();
StructureMembers.Member realm = sdata.getStructureMembers().findMember(proxym.getName());
byte[] data = sdata.getJavaArrayByte(realm);
for (byte aData : data) result.add(aData);
count++;
}
byte[] da = new byte[result.size()];
int i = 0;
for (Byte d : result) da[i++] = d;
dataArray = da;
} else if ((dataType == DataType.SHORT) || (dataType == DataType.ENUM2)) {
ArrayList result = new ArrayList(initial);
while (sdataIter.hasNext()) {
StructureData sdata = sdataIter.next();
StructureMembers.Member realm = sdata.getStructureMembers().findMember(proxym.getName());
short[] data = sdata.getJavaArrayShort(realm);
for (short aData : data) result.add(aData);
count++;
}
short[] da = new short[result.size()];
int i = 0;
for (Short d : result) da[i++] = d;
dataArray = da;
} else if ((dataType == DataType.INT) || (dataType == DataType.ENUM4)) {
ArrayList result = new ArrayList(initial);
while (sdataIter.hasNext()) {
StructureData sdata = sdataIter.next();
StructureMembers.Member realm = sdata.getStructureMembers().findMember(proxym.getName());
int[] data = sdata.getJavaArrayInt(realm);
for (int aData : data) result.add(aData);
count++;
}
int[] da = new int[result.size()];
int i = 0;
for (Integer d : result) da[i++] = d;
dataArray = da;
} else if (dataType == DataType.LONG) {
ArrayList result = new ArrayList(initial);
while (sdataIter.hasNext()) {
StructureData sdata = sdataIter.next();
StructureMembers.Member realm = sdata.getStructureMembers().findMember(proxym.getName());
long[] data = sdata.getJavaArrayLong(realm);
for (long aData : data) result.add(aData);
count++;
}
long[] da = new long[result.size()];
int i = 0;
for (Long d : result) da[i++] = d;
dataArray = da;
} else if (dataType == DataType.CHAR) {
ArrayList result = new ArrayList(initial);
while (sdataIter.hasNext()) {
StructureData sdata = sdataIter.next();
StructureMembers.Member realm = sdata.getStructureMembers().findMember(proxym.getName());
char[] data = sdata.getJavaArrayChar(realm);
for (char aData : data) result.add(aData);
count++;
}
char[] da = new char[result.size()];
int i = 0;
for (Character d : result) da[i++] = d;
dataArray = da;
} else if (dataType == DataType.STRING) {
ArrayList result = new ArrayList(initial);
while (sdataIter.hasNext()) {
StructureData sdata = sdataIter.next();
StructureMembers.Member realm = sdata.getStructureMembers().findMember(proxym.getName());
String[] data = sdata.getJavaArrayString(realm);
result.addAll(Arrays.asList(data));
count++;
}
String[] da = new String[result.size()];
int i = 0;
for (String d : result) da[i++] = d;
dataArray = da;
} else if (dataType == DataType.STRUCTURE) {
ArrayList result = new ArrayList(initial);
while (sdataIter.hasNext()) {
StructureData sdata = sdataIter.next();
StructureMembers.Member realm = sdata.getStructureMembers().findMember(proxym.getName());
ArrayStructure as = sdata.getArrayStructure(realm);
StructureDataIterator innerIter = as.getStructureDataIterator();
while (innerIter.hasNext())
result.add(innerIter.next());
count++;
}
StructureData[] da = new StructureData[result.size()];
rshape[0] = count;
StructureMembers membersw = new StructureMembers(proxym.getStructureMembers()); // no data arrays get propagated
return new ArrayStructureW(membersw, rshape, da);
}
} finally {
sdataIter.finish();
}
// create an array to hold the result
rshape[0] = count;
return Array.factory(dataType.getPrimitiveClassType(), rshape, dataArray);
}
@Override
public String toString() {
return "seq n=" + Integer.toString(nelems);
}
@Override
public void showInternal(Formatter f, Indent indent) {
super.showInternal(f, indent);
f.format("%sStructureDataIterator Class=%s hash=0x%x%n", indent, iter.getClass().getName(), iter.hashCode());
if (iter instanceof ArrayStructure.ArrayStructureIterator) {
ArrayStructure.ArrayStructureIterator ii = (ArrayStructure.ArrayStructureIterator) iter;
ii.getArrayStructure().showInternal(f, indent.incr());
indent.decr();
}
}
}
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