dap4.dap4lib

Class HttpDSP

java.lang.Object

dap4.dap4lib.D4DSP

dap4.dap4lib.HttpDSP

public class HttpDSP
extends D4DSP

Make a request to a server and convert the reply to a DapDataset from the returned bytes.

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	allowCompression
protected static boolean	DEBUG
protected static int	DFALTPRELOADSIZE
protected int	status

Fields inherited from class dap4.dap4lib.D4DSP

checksummode, datamap, dmr, dmrtext, location, mode, PARSEDEBUG, remoteorder, stream, streamclosed, xuri

Constructor Summary

Constructors

Constructor and Description
HttpDSP()

Method Summary

Modifier and Type	Method and Description
protected static java.lang.String	buildURL(java.lang.String baseurl, java.lang.String suffix, DapDataset template, java.lang.String ce)
boolean	dspMatch(java.lang.String url, DapContext context) Determine if a path refers to an object processable by this DSP
void	loadDAP() This will be called lazily when trying to read data.
void	loadDMR() Extract the DMR from available dechunked data
protected java.io.InputStream	makeRequest(java.lang.String methodurl) Open a connection and make a request for the (possibly constrained) DMR|DAP (choice is made by url extension)
D4DSP	open(java.lang.String fileurl, ChecksumMode cmode) "open" a reference to a data source and return the DSP wrapper.
static void	setHttpDebug()

Methods inherited from class dap4.dap4lib.D4DSP

addVariableData, getChecksumMap, getChecksumMode, getDMR, getMethodUrl, getStream, getVariableDataMap, loadContext, parseDMR, parseURL, processAttributes, processMaps, readDMR, reportError, setDMR, setStream, suppressAttributes

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

protected static final boolean DEBUG

See Also:

Constant Field Values

DFALTPRELOADSIZE

protected static final int DFALTPRELOADSIZE

See Also:

Constant Field Values

allowCompression

protected boolean allowCompression

status

protected int status

Constructor Detail

HttpDSP

public HttpDSP()

Method Detail

setHttpDebug

public static void setHttpDebug()

open

public D4DSP open(java.lang.String fileurl,
                  ChecksumMode cmode)
           throws DapException

Description copied from class: D4DSP

"open" a reference to a data source and return the DSP wrapper.

Overrides:

open in class D4DSP

Parameters:

fileurl - - Object that defines the data source

Returns:

= wrapping dsp

Throws:

DapException

dspMatch

public boolean dspMatch(java.lang.String url,
                        DapContext context)

Description copied from class: D4DSP

Determine if a path refers to an object processable by this DSP

Specified by:

dspMatch in class D4DSP

Parameters:

url -

context - Any parameters that may help to decide.

Returns:

true if this url appears to be processible by this DSP

loadDMR

public void loadDMR()
             throws DapException

Description copied from class: D4DSP

Extract the DMR from available dechunked data

Overrides:

loadDMR in class D4DSP

Throws:

DapException

loadDAP

public void loadDAP()
             throws DapException

This will be called lazily when trying to read data.

Overrides:

loadDAP in class D4DSP

Throws:

DapException

makeRequest

protected java.io.InputStream makeRequest(java.lang.String methodurl)
                                   throws DapException

Open a connection and make a request for the (possibly constrained) DMR|DAP (choice is made by url extension)

Throws:

DapException

buildURL

protected static java.lang.String buildURL(java.lang.String baseurl,
                                           java.lang.String suffix,
                                           DapDataset template,
                                           java.lang.String ce)