dap4.dap4lib

Class HttpDSP

java.lang.Object

dap4.dap4lib.AbstractDSP

dap4.dap4lib.serial.D4DSP

dap4.dap4lib.HttpDSP

All Implemented Interfaces:

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 and Description
protected boolean	allowCompression
protected java.lang.String	basece
protected static java.lang.String	CONSTRAINTTAG
protected java.lang.Object	context
protected static java.lang.String[]	DAP4EXTENSIONS
protected static java.lang.String[][]	DAP4FRAGMARKERS
protected static java.lang.String	DAP4PROTO
protected static java.lang.String[][]	DAP4QUERYMARKERS
protected static java.lang.String[]	DAP4SCHEMES
protected static java.lang.String[]	DAPEXTENSIONS
protected static java.lang.String	DAPVERSION
protected static java.lang.String	DATASUFFIX
protected static boolean	DEBUG
protected static int	DFALTPRELOADSIZE
protected static java.lang.String	DMRSUFFIX
protected static java.lang.String	DMRVERSION
protected static java.lang.String	DSRSUFFIX
protected static java.lang.String	FILEPROTO
protected static java.lang.String	PROTOTAG
protected static java.lang.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 and Description
HttpDSP()

Method Summary

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

See Also:

Constant Field Values

DMRVERSION

protected static final java.lang.String DMRVERSION

See Also:

Constant Field Values

DAP4PROTO

protected static final java.lang.String DAP4PROTO

See Also:

Constant Field Values

FILEPROTO

protected static final java.lang.String FILEPROTO

See Also:

Constant Field Values

DMRSUFFIX

protected static final java.lang.String DMRSUFFIX

See Also:

Constant Field Values

DATASUFFIX

protected static final java.lang.String DATASUFFIX

See Also:

Constant Field Values

DSRSUFFIX

protected static final java.lang.String DSRSUFFIX

See Also:

Constant Field Values

QUERYSTART

protected static final java.lang.String QUERYSTART

See Also:

Constant Field Values

CONSTRAINTTAG

protected static final java.lang.String CONSTRAINTTAG

See Also:

Constant Field Values

PROTOTAG

protected static final java.lang.String PROTOTAG

See Also:

Constant Field Values

DFALTPRELOADSIZE

protected static final int DFALTPRELOADSIZE

See Also:

Constant Field Values

DAPEXTENSIONS

protected static final java.lang.String[] DAPEXTENSIONS

DAP4EXTENSIONS

protected static final java.lang.String[] DAP4EXTENSIONS

DAP4QUERYMARKERS

protected static final java.lang.String[][] DAP4QUERYMARKERS

DAP4FRAGMARKERS

protected static final java.lang.String[][] DAP4FRAGMARKERS

DAP4SCHEMES

protected static final java.lang.String[] DAP4SCHEMES

allowCompression

protected boolean allowCompression

basece

protected java.lang.String basece

status

protected int status

xuri

protected XURI xuri

context

protected java.lang.Object context

Constructor Detail

HttpDSP

public HttpDSP()

Method Detail

dspMatch

public boolean dspMatch(java.lang.String url,
                        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(java.lang.String url)
             throws DapException

Description copied from class: AbstractDSP

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

Specified by:

open in interface DSP

Specified by:

open in class AbstractDSP

Parameters:

url - - Object that defines the data source

Returns:

= wrapping dsp

Throws:

DapException

close

public void close()

Specified by:

close in interface DSP

Specified by:

close in class AbstractDSP

build

protected void build()
              throws DapException

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

Throws:

DapException

callServer

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

Throws:

DapException

getCapabilities

public java.lang.String getCapabilities(java.lang.String url)
                                 throws java.io.IOException

Provide a method for getting the capabilities document.

Parameters:

url - for accessing the document

Throws:

DapException

java.io.IOException

buildURL

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

parseURL

protected void parseURL(java.lang.String url)
                 throws DapException

Throws:

DapException