org.springframework.web.servlet.resource

Class AbstractVersionStrategy

java.lang.Object

org.springframework.web.servlet.resource.AbstractVersionStrategy

All Implemented Interfaces:

VersionStrategy

Direct Known Subclasses:

ContentBasedVersionStrategy, FixedVersionStrategy

public abstract class AbstractVersionStrategy
extends Object
implements VersionStrategy

Abstract base class for VersionStrategy implementations. Supports versions as:

• prefix in the request path, like "version/static/myresource.js"
• file name suffix in the request path, like "static/myresource-version.js"

Note: This base class does not provide support for generating the version string.

Since:

4.1

Author:

Brian Clozel

Field Summary

Fields

Modifier and Type	Field and Description
protected Log	logger

Constructor Summary

Constructors

Constructor and Description
AbstractVersionStrategy()

Method Summary

Modifier and Type	Method and Description
protected String	addVersionAsPrefix(String baseUrl, String version) Adds the given version string to the baseUrl, as a prefix in the request path.
protected String	addVersionToFilename(String baseUrl, String version) Adds the given version string to the baseUrl, as a file name suffix.
protected String	deleteVersionAsPrefix(String requestPath, String version) Deletes the given candidate version string from the request path.
protected String	deleteVersionFromFilename(String requestPath, String candidateVersion) Deletes the given candidate version string from the request path.
protected String	extractVersionAsPrefix(String requestPath, String prefix) Extracts a version string from the request path, as a prefix in the request path.
protected String	extractVersionFromFilename(String requestPath) Extracts a version string from the request path, as a suffix in the resource file name.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.web.servlet.resource.VersionStrategy

addVersionToUrl, deleteVersionFromPath, extractVersionFromPath, resourceVersionMatches

Field Detail

logger

protected final Log logger

Constructor Detail

AbstractVersionStrategy

public AbstractVersionStrategy()

Method Detail

extractVersionFromFilename

protected String extractVersionFromFilename(String requestPath)

Extracts a version string from the request path, as a suffix in the resource file name.

Parameters:

requestPath - the request path to extract the version string from

Returns:

a version string or an empty string if none was found

deleteVersionFromFilename

protected String deleteVersionFromFilename(String requestPath,
                                           String candidateVersion)

Deletes the given candidate version string from the request path. The version string should be a suffix in the resource file name.

addVersionToFilename

protected String addVersionToFilename(String baseUrl,
                                      String version)

Adds the given version string to the baseUrl, as a file name suffix.

extractVersionAsPrefix

protected String extractVersionAsPrefix(String requestPath,
                                        String prefix)

Extracts a version string from the request path, as a prefix in the request path.

Parameters:

requestPath - the request path to extract the version string from

Returns:

a version string or an empty string if none was found

deleteVersionAsPrefix

protected String deleteVersionAsPrefix(String requestPath,
                                       String version)

Deletes the given candidate version string from the request path. The version string should be a prefix in the request path.

addVersionAsPrefix

protected String addVersionAsPrefix(String baseUrl,
                                    String version)

Adds the given version string to the baseUrl, as a prefix in the request path.