C# Class NVelocity.Runtime.RuntimeSingleton

This is the Runtime system for Velocity. It is the single access point for all functionality in Velocity. It adheres to the mediator pattern and is the only structure that developers need to be familiar with in order to get Velocity to perform. The Runtime will also cooperate with external systems like Turbine. Runtime properties can set and then the Runtime is initialized. Turbine for example knows where the templates are to be loaded from, and where the velocity log file should be placed. So in the case of Velocity cooperating with Turbine the code might look something like the following:

 RuntimeSingleton.setProperty(RuntimeConstants.FILE_RESOURCE_LOADER_PATH, templatePath); RuntimeSingleton.setProperty(RuntimeConstants.RUNTIME_LOG, pathToVelocityLog); RuntimeSingleton.init();

 ----------------------------------------------------------------------- N O T E S  O N  R U N T I M E  I N I T I A L I Z A T I O N ----------------------------------------------------------------------- RuntimeSingleton.init() If Runtime.init() is called by itself the Runtime will initialize with a set of default values. ----------------------------------------------------------------------- RuntimeSingleton.init(String/Properties) In this case the default velocity properties are layed down first to provide a solid base, then any properties provided in the given properties object will override the corresponding default property. -----------------------------------------------------------------------

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Private Properties

Property	Type	Description
CreateNewParser	NVelocity.Runtime.Parser.Parser

Public Methods

Method	Description
AddProperty ( String key, Object value ) : void	Add a property to the configuration. If it already exists then the value stated here will be added to the configuration entry. For example, if `resource.loader = file` is already present in the configuration and you `addProperty("resource.loader", "classpath")` Then you will end up with an ArrayList like the following: ["file", "classpath"]
AddVelocimacro ( String name, String macro, String argArray, String sourceTemplate ) : bool	Adds a new Velocimacro. Usually called by Macro only while parsing.
ClearProperty ( String key ) : void	Clear the values pertaining to a particular property.
Debug ( Object message ) : void	Log a debug message.
DumpVMNamespace ( String ns ) : bool	Tells the vmFactory to dump the specified namespace. This is to support clearing the VM list when in inline-VM-local-scope mode
Error ( Object message ) : void	Log an error message.
GetApplicationAttribute ( Object key ) : Object	IRuntimeServices.GetApplicationAttribute
GetBoolean ( String key, bool def ) : bool	Boolean property accessor method to hide the configuration implementation.
GetContent ( String name ) : ContentResource	Returns a static content resource from the resource manager. Uses the current value if INPUT_ENCODING as the character encoding. *
GetContent ( String name, String encoding ) : ContentResource	Returns a static content resource from the resource manager. *
GetInt ( String key ) : int	Int property accessor method to hide the configuration implementation.
GetInt ( String key, int defaultValue ) : int	Int property accessor method to hide the configuration implementation.
GetLoaderNameForResource ( String resourceName ) : String	Determines is a template exists, and returns name of the loader that provides it. This is a slightly less hokey way to support the Velocity.templateExists() utility method, which was broken when per-template encoding was introduced. We can revisit this. *
GetProperty ( String key ) : Object	Allows an external caller to get a property. The calling routine is required to know the type, as this routine will return an Object, as that is what properties can be.
GetString ( String key ) : String	String property accessor method to hide the configuration implementation.
GetTemplate ( String name ) : Template	Returns a `Template` from the resource manager. This method assumes that the character encoding of the template is set by the `input.encoding` property. The default is "ISO-8859-1" *
GetTemplate ( String name, String encoding ) : Template	Returns a `Template` from the resource manager *
GetVelocimacro ( String vmName, String templateName ) : Directive	Returns the appropriate VelocimacroProxy object if vmName is a valid current Velocimacro.
Info ( Object message ) : void	Log an info message.
Init ( ) : void	This is the primary initialization method in the Velocity Runtime. The systems that are setup/initialized here are as follows: Logging System ResourceManager Parser Pool Global Cache Static Content Include System Velocimacro System
Init ( ExtendedProperties p ) : void	Initialize the Velocity Runtime with an ExtendedProperties object.
Init ( String configurationFile ) : void	Initialize the Velocity Runtime with a configuration file.
IsVelocimacro ( String vmName, String templateName ) : bool	Checks to see if a VM exists
Parse ( TextReader reader, String templateName ) : NVelocity.Runtime.Parser.Node.SimpleNode	Parse the input and return the root of AST node structure. In the event that it runs out of parsers in the pool, it will create and let them be GC'd dynamically, logging that it has to do that. This is considered an exceptional condition. It is expected that the user will set the PARSER_POOL_SIZE property appropriately for their application. We will revisit this.
Parse ( TextReader reader, String templateName, bool dumpNamespace ) : NVelocity.Runtime.Parser.Node.SimpleNode	Parse the input and return the root of the AST node structure.
SetProperty ( String key, Object value ) : void	Allows an external system to set a property in the Velocity Runtime.
Warn ( Object message ) : void	Log a warning message.
getString ( String key, String defaultValue ) : String	String property accessor method with default to hide the configuration implementation.

Private Methods

Method	Description
CreateNewParser ( ) : Parser	Returns a JavaCC generated Parser.

Method Details

AddProperty() public static method

Add a property to the configuration. If it already exists then the value stated here will be added to the configuration entry. For example, if resource.loader = file is already present in the configuration and you addProperty("resource.loader", "classpath") Then you will end up with an ArrayList like the following: ["file", "classpath"]

public static AddProperty ( String key, Object value ) : void
key	String	key
value	Object	value
return	void

AddVelocimacro() public static method

Adds a new Velocimacro. Usually called by Macro only while parsing.

public static AddVelocimacro ( String name, String macro, String argArray, String sourceTemplate ) : bool
name	String	Name of velocimacro
macro	String	String form of macro body
argArray	String	Array of strings, containing the /// `#macro()` arguments. The 0th is the name. ///
sourceTemplate	String	Source template
return	bool

ClearProperty() public static method

Clear the values pertaining to a particular property.

public static ClearProperty ( String key ) : void
key	String	key of property to clear
return	void

Debug() public static method

Log a debug message.

public static Debug ( Object message ) : void
message	Object	message to log
return	void

DumpVMNamespace() public static method

Tells the vmFactory to dump the specified namespace. This is to support clearing the VM list when in inline-VM-local-scope mode

public static DumpVMNamespace ( String ns ) : bool
ns	String
return	bool

Error() public static method

Log an error message.

public static Error ( Object message ) : void
message	Object	message to log
return	void

GetApplicationAttribute() public static method

IRuntimeServices.GetApplicationAttribute

public static GetApplicationAttribute ( Object key ) : Object
key	Object	key
return	Object

GetBoolean() public static method

Boolean property accessor method to hide the configuration implementation.

public static GetBoolean ( String key, bool def ) : bool
key	String	property key
def	bool	default value if property not found
return	bool

GetContent() public static method

Returns a static content resource from the resource manager. Uses the current value if INPUT_ENCODING as the character encoding. *

public static GetContent ( String name ) : ContentResource
name	String	Name of content resource to get ///
return	ContentResource

GetContent() public static method

Returns a static content resource from the resource manager. *

public static GetContent ( String name, String encoding ) : ContentResource
name	String	Name of content resource to get ///
encoding	String	Character encoding to use ///
return	ContentResource

GetInt() public static method

Int property accessor method to hide the configuration implementation.

public static GetInt ( String key ) : int
key	String	property key
return	int

GetInt() public static method

Int property accessor method to hide the configuration implementation.

public static GetInt ( String key, int defaultValue ) : int
key	String	property key
defaultValue	int	default value
return	int

GetLoaderNameForResource() public static method

Determines is a template exists, and returns name of the loader that provides it. This is a slightly less hokey way to support the Velocity.templateExists() utility method, which was broken when per-template encoding was introduced. We can revisit this. *

public static GetLoaderNameForResource ( String resourceName ) : String
resourceName	String	Name of template or content resource ///
return	String

GetProperty() public static method

Allows an external caller to get a property. The calling routine is required to know the type, as this routine will return an Object, as that is what properties can be.

public static GetProperty ( String key ) : Object
key	String	property to return
return	Object

GetString() public static method

String property accessor method to hide the configuration implementation.

public static GetString ( String key ) : String
key	String	property key
return	String

GetTemplate() public static method

Returns a Template from the resource manager. This method assumes that the character encoding of the template is set by the input.encoding property. The default is "ISO-8859-1" *

public static GetTemplate ( String name ) : Template
name	String	The file name of the desired template. ///
return	Template

GetTemplate() public static method

Returns a Template from the resource manager *

public static GetTemplate ( String name, String encoding ) : Template
name	String	The name of the desired template. ///
encoding	String	Character encoding of the template ///
return	Template

GetVelocimacro() public static method

Returns the appropriate VelocimacroProxy object if vmName is a valid current Velocimacro.

public static GetVelocimacro ( String vmName, String templateName ) : Directive
vmName	String	Name of velocimacro requested
templateName	String	Template Name
return	NVelocity.Runtime.Directive.Directive

Info() public static method

Log an info message.

public static Info ( Object message ) : void
message	Object	message to log
return	void

Init() public static method

This is the primary initialization method in the Velocity Runtime. The systems that are setup/initialized here are as follows: Logging System ResourceManager Parser Pool Global Cache Static Content Include System Velocimacro System

public static Init ( ) : void
return	void

Init() public static method

Initialize the Velocity Runtime with an ExtendedProperties object.

public static Init ( ExtendedProperties p ) : void
p	Commons.Collections.ExtendedProperties	Properties
return	void

Init() public static method

Initialize the Velocity Runtime with a configuration file.

public static Init ( String configurationFile ) : void
configurationFile	String	configuration file
return	void

IsVelocimacro() public static method

Checks to see if a VM exists

public static IsVelocimacro ( String vmName, String templateName ) : bool
vmName	String	Name of velocimacro
templateName	String	Template Name
return	bool

Parse() public static method

Parse the input and return the root of AST node structure.

In the event that it runs out of parsers in the pool, it will create and let them be GC'd dynamically, logging that it has to do that. This is considered an exceptional condition. It is expected that the user will set the PARSER_POOL_SIZE property appropriately for their application. We will revisit this.

public static Parse ( TextReader reader, String templateName ) : NVelocity.Runtime.Parser.Node.SimpleNode
reader	System.IO.TextReader	TextReader retrieved by a resource loader
templateName	String	name of the template being parsed
return	NVelocity.Runtime.Parser.Node.SimpleNode

Parse() public static method

Parse the input and return the root of the AST node structure.

public static Parse ( TextReader reader, String templateName, bool dumpNamespace ) : NVelocity.Runtime.Parser.Node.SimpleNode
reader	System.IO.TextReader	TextReader retrieved by a resource loader
templateName	String	name of the template being parsed
dumpNamespace	bool	flag to dump the Velocimacro namespace for this template
return	NVelocity.Runtime.Parser.Node.SimpleNode

SetProperty() public static method

Allows an external system to set a property in the Velocity Runtime.

public static SetProperty ( String key, Object value ) : void
key	String	property key
value	Object	property value
return	void

Warn() public static method

Log a warning message.

public static Warn ( Object message ) : void
message	Object	message to log
return	void

getString() public static method

String property accessor method with default to hide the configuration implementation.

public static getString ( String key, String defaultValue ) : String
key	String	property key ///
defaultValue	String	default value to return if key not /// found in resource manager. ///
return	String