Package dap4.dap4lib

Class HttpDSP

java.lang.Object

dap4.dap4lib.AbstractDSP

dap4.dap4lib.serial.D4DSP

dap4.dap4lib.HttpDSP

All Implemented Interfaces:

dap4.core.data.DSP

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	Description
protected boolean	allowCompression
protected String	basece
protected static String	CONSTRAINTTAG
protected Object	context
protected static String[]	DAP4EXTENSIONS
protected static String[][]	DAP4FRAGMARKERS
protected static String	DAP4PROTO
protected static String[][]	DAP4QUERYMARKERS
protected static String[]	DAP4SCHEMES
protected static String[]	DAPEXTENSIONS
protected static String	DAPVERSION
protected static String	DATASUFFIX
protected static boolean	DEBUG
protected static int	DFALTPRELOADSIZE
protected static String	DMRSUFFIX
protected static String	DMRVERSION
protected static String	DSRSUFFIX
protected static String	FILEPROTO
protected static String	PROTOTAG
protected static String	QUERYSTART
protected int	status
protected XURI	xuri

Fields inherited from class dap4.dap4lib.serial.D4DSP

databuffer, DUMPDAP, DUMPDMR

Fields inherited from class dap4.dap4lib.AbstractDSP

dmr, DMRNS, location, PARSEDEBUG, rootcursor, TESTING, UCARTAGOPAQUE, UCARTAGORIGTYPE, UCARTAGUNLIMITED, UCARTAGVLEN, USEDOM, variables

Constructor Summary

Constructors

Constructor	Description
HttpDSP()

Method Summary

Modifier and Type	Method	Description
protected void	build()	Open a connection and make a request for the (possibly constrained) DMR.
protected static String	buildURL(String baseurl, String suffix, dap4.core.dmr.DapDataset template, String ce)
protected InputStream	callServer(String methodurl)
void	close()
boolean	dspMatch(String url, dap4.core.util.DapContext context)	A path is a DAP4 path if at least one of the following is true.
String	getCapabilities(String url)	Provide a method for getting the capabilities document.
HttpDSP	open(String url)	"open" a reference to a data source and return the DSP wrapper.
protected void	parseURL(String url)

Methods inherited from class dap4.dap4lib.serial.D4DSP

build, build

Methods inherited from class dap4.dap4lib.AbstractDSP

addVariableData, getChecksumMode, getContext, getDMR, getLocation, getOrder, getVariableData, parseDMR, printDMR, processAttributes, setChecksumMode, setContext, setDataset, setDMR, setLocation, setOrder, suppress

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

DAPVERSION

protected static final String DAPVERSION

See Also:

Constant Field Values

DMRVERSION

protected static final String DMRVERSION

See Also:

Constant Field Values

DAP4PROTO

protected static final String DAP4PROTO

See Also:

Constant Field Values

FILEPROTO

protected static final String FILEPROTO

See Also:

Constant Field Values

DMRSUFFIX

protected static final String DMRSUFFIX

See Also:

Constant Field Values

DATASUFFIX

protected static final String DATASUFFIX

See Also:

Constant Field Values

DSRSUFFIX

protected static final String DSRSUFFIX

See Also:

Constant Field Values

QUERYSTART

protected static final String QUERYSTART

See Also:

Constant Field Values

CONSTRAINTTAG

protected static final String CONSTRAINTTAG

See Also:

Constant Field Values

PROTOTAG

protected static final String PROTOTAG

See Also:

Constant Field Values

DFALTPRELOADSIZE

protected static final int DFALTPRELOADSIZE

See Also:

Constant Field Values

DAPEXTENSIONS

protected static final String[] DAPEXTENSIONS

DAP4EXTENSIONS

protected static final String[] DAP4EXTENSIONS

DAP4QUERYMARKERS

protected static final String[][] DAP4QUERYMARKERS

DAP4FRAGMARKERS

protected static final String[][] DAP4FRAGMARKERS

DAP4SCHEMES

protected static final String[] DAP4SCHEMES

allowCompression

protected boolean allowCompression

basece

protected String basece

status

protected int status

xuri

protected XURI xuri

context

protected Object context

Constructor Detail

HttpDSP

public HttpDSP()

Method Detail

dspMatch

public boolean dspMatch(String url,
                        dap4.core.util.DapContext context)

A path is a DAP4 path if at least one of the following is true. 1. it has "dap4:" as its leading protocol 2. it has #protocol=dap4 in its fragment

Parameters:

url -

context - Any parameters that may help to decide.

Returns:

true if this url appears to be processible by this DSP

open

public HttpDSP open(String url)
             throws dap4.core.util.DapException

Description copied from class: AbstractDSP

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

Specified by:

open in interface dap4.core.data.DSP

Specified by:

open in class AbstractDSP

Parameters:

url - - Object that defines the data source

Returns:

= wrapping dsp

Throws:

dap4.core.util.DapException

close

public void close()

Specified by:

close in interface dap4.core.data.DSP

Specified by:

close in class AbstractDSP

build

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

Open a connection and make a request for the (possibly constrained) DMR.

Throws:

dap4.core.util.DapException

callServer

protected InputStream callServer(String methodurl)
                          throws dap4.core.util.DapException

Throws:

dap4.core.util.DapException

getCapabilities

public String getCapabilities(String url)
                       throws IOException

Provide a method for getting the capabilities document.

Parameters:

url - for accessing the document

Throws:

dap4.core.util.DapException

IOException

buildURL

protected static String buildURL(String baseurl,
                                 String suffix,
                                 dap4.core.dmr.DapDataset template,
                                 String ce)

parseURL

protected void parseURL(String url)
                 throws dap4.core.util.DapException

Throws:

dap4.core.util.DapException