dap4.servlet

Class Generator

java.lang.Object

dap4.servlet.DapSerializer

dap4.servlet.Generator

public class Generator
extends DapSerializer

Given a DMR, return: 1. A byte array (byte[]) containing serialized data and (optionally) the DMR

Requirements: 1. repeatability: given the same DMR, return the same byte array

Notes: 1. Two options are provided for generating values: a. use of a random number generator with a fixed seed. b. use of a pre-defined sequence of values with repetition when the sequence is exhausted (not yet implemented).

Additionally, provide two options for generating data from a DMR. 1. Automated generation of the data from the whole DMR. 2. Selective generation by starting at some variable in the DMR. This is useful when one wants more detailed control over e.g. the number of tuples in a sequence.

Field Summary

Fields

Modifier and Type	Field and Description
protected static boolean	asciionly
protected ChunkWriter	cw
protected DapDataset	dmr
protected ByteArrayOutputStream	stream
protected Value	values
protected boolean	withdmr

Fields inherited from class dap4.servlet.DapSerializer

ce, data, dsp, order, writer

Constructor Summary

Constructors

Constructor and Description
Generator(DapDataset dmr, Value.ValueSource src)

Method Summary

Methods

Modifier and Type	Method and Description
void	atomicVariable(DapAtomicVariable dapvar)
void	begin(CEConstraint ce, ChunkWriter cw, boolean withdmr)
void	dataset(DapDataset dmr)
void	end()
void	generate(CEConstraint ce, ChunkWriter cw)
void	generate(CEConstraint ce, ChunkWriter cw, boolean withdmr)
void	generateDMR(DapDataset dmr)
static int	getRowCount()
void	sequence(DapSequence seq)
static void	setASCII(boolean tf)
static void	setRowCount(int count)
void	structure(DapStructure struct)
void	variable(DapVariable dapvar)

Methods inherited from class dap4.servlet.DapSerializer

write, writeAtomicVariable, writeCompound, writeCompoundArray, writeRecord, writeSequence, writeStructure, writeVariable

Methods inherited from class java.lang.Object

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

Field Detail

asciionly

protected static boolean asciionly

values

protected Value values

stream

protected ByteArrayOutputStream stream

cw

protected ChunkWriter cw

withdmr

protected boolean withdmr

dmr

protected DapDataset dmr

Constructor Detail

Generator

public Generator(DapDataset dmr,
         Value.ValueSource src)
          throws DapException

Throws:

DapException

Method Detail

setASCII

public static void setASCII(boolean tf)

getRowCount

public static int getRowCount()

setRowCount

public static void setRowCount(int count)

generate

public void generate(CEConstraint ce,
            ChunkWriter cw)
              throws DapException

Throws:

DapException

generate

public void generate(CEConstraint ce,
            ChunkWriter cw,
            boolean withdmr)
              throws DapException

Throws:

DapException

begin

public void begin(CEConstraint ce,
         ChunkWriter cw,
         boolean withdmr)
           throws DapException

Throws:

DapException

end

public void end()
         throws DapException

Throws:

DapException

generateDMR

public void generateDMR(DapDataset dmr)
                 throws DapException

Throws:

DapException

dataset

public void dataset(DapDataset dmr)
             throws DapException

Throws:

DapException

variable

public void variable(DapVariable dapvar)
              throws DapException

Throws:

DapException

atomicVariable

public void atomicVariable(DapAtomicVariable dapvar)
                    throws DapException

Throws:

DapException

structure

public void structure(DapStructure struct)
               throws DapException

Throws:

DapException

sequence

public void sequence(DapSequence seq)
              throws DapException

Throws:

DapException