de.cismet.commons.capabilities

Class AbstractVersionNegotiator

java.lang.Object

de.cismet.commons.capabilities.AbstractVersionNegotiator

Direct Known Subclasses:

WMSCapabilitiesFactory

public abstract class AbstractVersionNegotiator
extends Object

DOCUMENT ME!

Version:

$Revision$, $Date$

Author:

therter

Field Summary

Fields

Modifier and Type	Field and Description
protected String[]	basicAuthorizationTokens
protected CalculationCache<String,String>	capabilitiesCache
protected String	currentVersion
protected boolean	headless
protected String	serviceName
protected String[]	supportedVersions

Constructor Summary

Constructors

Constructor and Description
AbstractVersionNegotiator(CalculationCache<String,String> capabilitiesCache) Creates a new AbstractVersionNegotiator object.

Method Summary

Modifier and Type	Method and Description
protected String	getCapabilitiesDocument(String link) DOCUMENT ME!
protected String	getDocumentVersion(StringBuilder document) DOCUMENT ME!
protected String	getOlderCapabilitiesDocument(String link) Invokes the GetCapabilities operation of the server with an older version string.
protected String	getVersionFromLink(String link) DOCUMENT ME!
protected abstract void	initVersion() This m,ethod must be overidden by the sub classes and should initialize the constant SUPPORTED_VERSIONS.
protected StringBuilder	readStringFromlink(String url) read the document from the given link.

Methods inherited from class java.lang.Object

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

Field Detail

supportedVersions

protected String[] supportedVersions

currentVersion

protected String currentVersion

serviceName

protected String serviceName

headless

protected boolean headless

basicAuthorizationTokens

protected String[] basicAuthorizationTokens

capabilitiesCache

protected CalculationCache<String,String> capabilitiesCache

Constructor Detail

AbstractVersionNegotiator

public AbstractVersionNegotiator(CalculationCache<String,String> capabilitiesCache)

Creates a new AbstractVersionNegotiator object.

Parameters:

capabilitiesCache - DOCUMENT ME!

Method Detail

initVersion

protected abstract void initVersion()

This m,ethod must be overidden by the sub classes and should initialize the constant SUPPORTED_VERSIONS.

getOlderCapabilitiesDocument

protected String getOlderCapabilitiesDocument(String link)
                                       throws MalformedURLException,
                                              Exception

Invokes the GetCapabilities operation of the server with an older version string.

Parameters:

link - DOCUMENT ME!

Returns:

DOCUMENT ME!

Throws:

MalformedURLException - DOCUMENT ME!

Exception - DOCUMENT ME!

getCapabilitiesDocument

protected String getCapabilitiesDocument(String link)
                                  throws MalformedURLException,
                                         Exception

DOCUMENT ME!

Parameters:

link - DOCUMENT ME!

Returns:

the capabilities document of the service with the given link. If the link already contains a version, then this version will be used as start version for the version negotation. Otherwise, the most recent version, that is supported by the client will be used as start version.

Throws:

MalformedURLException - DOCUMENT ME!

Exception - DOCUMENT ME!

getVersionFromLink

protected String getVersionFromLink(String link)

DOCUMENT ME!

Parameters:

link - DOCUMENT ME!

Returns:

the version string of the given link or null, if the given link does not contain any version string

getDocumentVersion

protected String getDocumentVersion(StringBuilder document)

DOCUMENT ME!

Parameters:

document - the GetCapabilities document

Returns:

the version of the given document or null, if no version string found

readStringFromlink

protected StringBuilder readStringFromlink(String url)
                                    throws MalformedURLException,
                                           Exception

read the document from the given link.

Parameters:

url - DOCUMENT ME!

Returns:

a StringBuilder that contains the content of the given url

Throws:

MalformedURLException - DOCUMENT ME!

Exception - DOCUMENT ME!