dap4.cdm

Class CDMCompiler

java.lang.Object

dap4.cdm.CDMCompiler

public class CDMCompiler
extends java.lang.Object

The goal for the CDM compiler is two-fold: 1. Create a set of CDMNodes corresponding to the relevant nodes in the DMR. 2. Create a set of CDM ucar.ma2.array objects that wrap the DataDataset object.

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	DEBUG

Constructor Summary

Constructors

Constructor and Description
CDMCompiler(DapNetcdfFile ncfile, dap4.dap4shared.D4DSP dsp) Constructor

Method Summary

Modifier and Type	Method and Description
protected ucar.ma2.Array	compileAtomicVar(dap4.core.data.DataVariable d4var) Compile an Atomic Valued variable.
protected void	compileDMR() Convert a DMR to equivalent CDM meta-databuffer and populate a NetcdfFile with it.
protected CDMArraySequence	compileSequence(dap4.dap4shared.D4DataSequence d4var) Compile a sequence.
protected ucar.ma2.Array	compileSequenceArray(dap4.dap4shared.D4DataVariable d4var) Compile an array of sequences.
protected CDMArray	compileStructure(dap4.dap4shared.D4DataStructure d4var, int recno, CDMArrayStructure container) Compile a single structure instance.
protected ucar.ma2.Array	compileStructureArray(dap4.dap4shared.D4DataVariable d4var) Compile an array of structures.
protected ucar.ma2.Array	compileVar(dap4.core.data.DataVariable d4var)
dap4.cdmshared.NodeMap	getNodeMap()

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

public static boolean DEBUG

Constructor Detail

CDMCompiler

public CDMCompiler(DapNetcdfFile ncfile,
                   dap4.dap4shared.D4DSP dsp)
            throws dap4.core.util.DapException

Constructor

Parameters:

ncfile - the target NetcdfFile

dsp - the compiled D4 databuffer

Throws:

dap4.core.util.DapException

Method Detail

getNodeMap

public dap4.cdmshared.NodeMap getNodeMap()

compileDMR

protected void compileDMR()
                   throws dap4.core.util.DapException

Convert a DMR to equivalent CDM meta-databuffer and populate a NetcdfFile with it.

Throws:

dap4.core.util.DapException

compileVar

protected ucar.ma2.Array compileVar(dap4.core.data.DataVariable d4var)
                             throws dap4.core.util.DapException

Throws:

dap4.core.util.DapException

compileAtomicVar

protected ucar.ma2.Array compileAtomicVar(dap4.core.data.DataVariable d4var)
                                   throws dap4.core.util.DapException

Compile an Atomic Valued variable.

Parameters:

d4var - The D4 databuffer wrapper

Returns:

An Array object wrapping d4var.

Throws:

dap4.core.util.DapException

compileStructure

protected CDMArray compileStructure(dap4.dap4shared.D4DataStructure d4var,
                                    int recno,
                                    CDMArrayStructure container)
                             throws dap4.core.util.DapException

Compile a single structure instance. WARNING: the underlying CDM code (esp. NetcdfDataset) apparently does not support nested structure arrays; so this code may throw an exception.

Parameters:

d4var - the data underlying this structure instance

recno - the index in the parent compound array.

container - the parent CDMArrayStructure

Returns:

An Array for this instance

Throws:

dap4.core.util.DapException

compileStructureArray

protected ucar.ma2.Array compileStructureArray(dap4.dap4shared.D4DataVariable d4var)
                                        throws dap4.core.util.DapException

Compile an array of structures. WARNING: the underlying CDM code (esp. NetcdfDataset) apparently does not support nested structure arrays; so this code may throw an exception.

Parameters:

d4var - The D4 databuffer wrapper

Returns:

A CDMArrayStructure for the databuffer for this struct.

Throws:

dap4.core.util.DapException

compileSequence

protected CDMArraySequence compileSequence(dap4.dap4shared.D4DataSequence d4var)
                                    throws dap4.core.util.DapException

Compile a sequence. WARNING: the underlying CDM code (esp. NetcdfDataset) apparently does not support nested sequence arrays.

Parameters:

d4var - the data underlying this sequence instance

Returns:

A CDMArraySequence for this instance

Throws:

dap4.core.util.DapException

compileSequenceArray

protected ucar.ma2.Array compileSequenceArray(dap4.dap4shared.D4DataVariable d4var)
                                       throws dap4.core.util.DapException

Compile an array of sequences. WARNING: the underlying CDM code (esp. NetcdfDataset) apparently does not support sequences with rank > 0 (ignoring the vlen dimension) so this code may throw an exception.

Parameters:

d4var - The D4 databuffer wrapper

Returns:

A CDMArraySequence for the databuffer for this seq.

Throws:

dap4.core.util.DapException

See Also:

to see how a dimensioned Sequence is represented.