org.apache.sling.engine

Class EngineConstants

java.lang.Object

org.apache.sling.engine.EngineConstants

public class EngineConstants
extends Object

The CoreConstants interface provides some symbolic constants for well known constant strings in Sling. Even though these constants will never change, it is recommended that applications refer to the symbolic constants instead of code the strings themselves.

Field Summary

Fields

Modifier and Type	Field and Description
static String	FILTER_NAME The name of the service to be used for registering filters with the SlingRequestProcessor.
static String	FILTER_ORDER Deprecated. Use "service.ranking" (org.osgi.framework.Constants.SERVICE_RANKING) instead
static String	FILTER_SCOPE Deprecated. Use SLING_FILTER_SCOPE instead
static String	FILTER_SCOPE_COMPONENT Filter scope value identifying a component level filter.
static String	FILTER_SCOPE_ERROR Filter scope value identifying an error level filter.
static String	FILTER_SCOPE_FORWARD Filter scope value identifying a forward level filter.
static String	FILTER_SCOPE_INCLUDE Filter scope value identifying an include level filter.
static String	FILTER_SCOPE_REQUEST Filter scope value identifying a request level filter.
static String	SESSION Deprecated. as of bundle version 2.1
static String	SLING_CURRENT_SERVLET_NAME Deprecated. Use SlingConstants.SLING_CURRENT_SERVLET_NAME
static String	SLING_FILTER_SCOPE The name of the service registration property of a java.servlet.Filter service to be used as a filter by the SlingRequestProcessor.
static String	SLING_HOME Deprecated. Use SlingSettingsService.SLING_HOME
static String	SLING_HOME_URL Deprecated. Use SlingSettingsService.SLING_HOME_URL
static String	SLING_SERLVET_NAME Deprecated.

Constructor Summary

Constructors

Constructor and Description
EngineConstants()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

SLING_HOME

@Deprecated
public static final String SLING_HOME

Deprecated. Use SlingSettingsService.SLING_HOME

The name of the framework property defining the Sling home directory (value is "sling.home"). This is a Platform file system directory below which all runtime data, such as the Felix bundle archives, logfiles, the repository, etc., is located.

This property is available calling the BundleContext.getProperty(String) method.

See Also:

SLING_HOME_URL, Constant Field Values

SLING_HOME_URL

@Deprecated
public static final String SLING_HOME_URL

Deprecated. Use SlingSettingsService.SLING_HOME_URL

The name of the framework property defining the Sling home directory as an URL (value is "sling.home.url").

The value of this property is assigned the value of new File(${sling.home}).toURI().toString() before resolving the property variables.

This property is available calling the BundleContext.getProperty(String) method.

See Also:

SLING_HOME, Constant Field Values

SLING_CURRENT_SERVLET_NAME

@Deprecated
public static final String SLING_CURRENT_SERVLET_NAME

Deprecated. Use SlingConstants.SLING_CURRENT_SERVLET_NAME

The name of the request attribute providing the name of the currently executing servlet (value is "sling.core.current.servletName"). This attribute is set immediately before calling the Servlet.service() method and reset to any previously stored value after the service method returns.

See Also:

Constant Field Values

SLING_SERLVET_NAME

@Deprecated
public static final String SLING_SERLVET_NAME

Deprecated.

The name of the service registration property of a Servlet registered as a service containing the name of the servlet (value is "sling.core.servletName"). If this property is missing or empty, the component.name property or the service.pid is used. If none of the three properties is defined, the Servlet is ignored.

See Also:

Constant Field Values

SESSION

@Deprecated
public static final String SESSION

Deprecated. as of bundle version 2.1

The javax.jcr.Session request attribute used to be set by the SlingAuthenticator upon successfull authentication. with the release of the Authentication Core 1.0.0 bundle, this request attribute is not set any more.

Applications requiring access to the JCR Session must be modified to get the Resource Resolver from the Sling request ( SlingHttpServletRequest.getResourceResolver()) and adapt it to the JCR Session.

See Also:

Constant Field Values

FILTER_NAME

public static final String FILTER_NAME

The name of the service to be used for registering filters with the SlingRequestProcessor.

Since:

2.1, Sling Engine 2.2

See Also:

Constant Field Values

FILTER_SCOPE

@Deprecated
public static final String FILTER_SCOPE

Deprecated. Use SLING_FILTER_SCOPE instead

The name of the service registration property of a java.servlet.Filter service to be used as a filter by the SlingRequestProcessor.

The specification of the filter.scope service registration property is required for a javax.servlet.Filter service to be used as a filter by the Sling Engine.

The filter.scope registration property is expected to be a scalar String, an array of Strings or a Vector of Strings. Case of the value is ignored.

Since:

2.1, Sling Engine 2.2

See Also:

FILTER_SCOPE_COMPONENT, FILTER_SCOPE_ERROR, FILTER_SCOPE_FORWARD, FILTER_SCOPE_INCLUDE, FILTER_SCOPE_REQUEST, Constant Field Values

SLING_FILTER_SCOPE

public static final String SLING_FILTER_SCOPE

The name of the service registration property of a java.servlet.Filter service to be used as a filter by the SlingRequestProcessor.

The specification of the sling.filter.scope service registration property is required for a javax.servlet.Filter service to be used as a filter by the Sling Engine.

The sling.filter.scope registration property is expected to be a scalar String, an array of Strings or a Vector of Strings. Case of the value is ignored.

Since:

2.1, Sling Engine 2.2

See Also:

FILTER_SCOPE_COMPONENT, FILTER_SCOPE_ERROR, FILTER_SCOPE_FORWARD, FILTER_SCOPE_INCLUDE, FILTER_SCOPE_REQUEST, Constant Field Values

FILTER_SCOPE_COMPONENT

public static final String FILTER_SCOPE_COMPONENT

Filter scope value identifying a component level filter.

Component level filters are called once at the beginning of each request (after the FILTER_SCOPE_REQUEST filters) and for each resource being included or forwarded. The order of calling the filters is defined by the service.ranking (or FILTER_ORDER) property and the service registration ID.

Since:

2.1, Sling Engine 2.2

See Also:

SLING_FILTER_SCOPE, Constant Field Values

FILTER_SCOPE_ERROR

public static final String FILTER_SCOPE_ERROR

Filter scope value identifying an error level filter.

Error level filters are called before calling the ErrorHandler due to either a HttpServletResponse.sendError call or due to an uncaught Throwable. The order of calling the filters is defined by the service.ranking (or FILTER_ORDER) property and the service registration ID.

Since:

2.1, Sling Engine 2.2

See Also:

FILTER_SCOPE, Constant Field Values

FILTER_SCOPE_INCLUDE

public static final String FILTER_SCOPE_INCLUDE

Filter scope value identifying an include level filter.

Include level filters are called before the script handling an included resource is called. A resource is considered included if it rendered as a result of calling RequestDispatcher.include. This may also be induced by any JSP tags causing the RequestDispatcher.include method being called, e.g. <sling:include>. The order of calling the filters is defined by the service.ranking (or FILTER_ORDER) property and the service registration ID.

Since:

2.1, Sling Engine 2.2

See Also:

FILTER_SCOPE, Constant Field Values

FILTER_SCOPE_FORWARD

public static final String FILTER_SCOPE_FORWARD

Filter scope value identifying a forward level filter.

Forward level filters are called before the script handling a forwarded resource is called. A resource is considered forwarded if it rendered as a result of calling RequestDispatcher.forward. This may also be induced by any JSP tags causing the RequestDispatcher.forward method being called, e.g. <sling:forward>. The order of calling the filters is defined by the service.ranking (or FILTER_ORDER) property and the service registration ID.

Since:

2.1, Sling Engine 2.2

See Also:

FILTER_SCOPE, Constant Field Values

FILTER_SCOPE_REQUEST

public static final String FILTER_SCOPE_REQUEST

Filter scope value identifying a request level filter.

Request level filters are called once at the beginning of each request. The order of calling the filters is defined by the service.ranking (or FILTER_ORDER) property and the service registration ID.

Since:

2.1, Sling Engine 2.2

See Also:

FILTER_SCOPE, Constant Field Values

FILTER_ORDER

@Deprecated
public static final String FILTER_ORDER

Deprecated. Use "service.ranking" (org.osgi.framework.Constants.SERVICE_RANKING) instead

The name of the service registration property previously used to place an order amongst filters. Starting with the Sling Engine 2.2, filters should be registered with a standard service.ranking service property to implement filter ordering.

If a service is registered with both a service.ranking and a filter.order property, the service.ranking property is used for ordering. If only a filter.order property is used it is currently still used.

Since:

2.1, Sling Engine 2.2

See Also:

Constant Field Values

Constructor Detail

EngineConstants

public EngineConstants()