org.apache.velocity.runtime
Class Runtime

java.lang.Object
  org.apache.velocity.runtime.Runtime

All Implemented Interfaces:

RuntimeConstants

Deprecated. Use RuntimeInstance or RuntimeSingleton instead.

public class Runtime
extends Object
implements RuntimeConstants

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:

 Runtime.setProperty(Runtime.FILE_RESOURCE_LOADER_PATH, templatePath);
 Runtime.setProperty(Runtime.RUNTIME_LOG, pathToVelocityLog);
 Runtime.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
 -----------------------------------------------------------------------
 Runtime.init()

 If Runtime.init() is called by itself the Runtime will
 initialize with a set of default values.
 -----------------------------------------------------------------------
 Runtime.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.
 -----------------------------------------------------------------------
 

Version:

$Id: Runtime.java 685390 2008-08-13 00:07:23Z nbubna $

Author:

Jason van Zyl, Jeff Bowden, Geir Magusson Jr.

See Also:

RuntimeInstance, RuntimeSingleton

Field Summary

Fields inherited from interface org.apache.velocity.runtime.RuntimeConstants

COUNTER_INITIAL_VALUE, COUNTER_NAME, DEBUG_PREFIX, DEFAULT_RUNTIME_DIRECTIVES, DEFAULT_RUNTIME_PROPERTIES, DEFINE_DIRECTIVE_MAXDEPTH, ENCODING_DEFAULT, ERROR_PREFIX, ERRORMSG_END, ERRORMSG_START, EVALUATE_CONTEXT_CLASS, EVENTHANDLER_INCLUDE, EVENTHANDLER_INVALIDREFERENCES, EVENTHANDLER_METHODEXCEPTION, EVENTHANDLER_NULLSET, EVENTHANDLER_REFERENCEINSERTION, FILE_RESOURCE_LOADER_CACHE, FILE_RESOURCE_LOADER_PATH, HAS_NEXT_NAME, INFO_PREFIX, INPUT_ENCODING, INTERPOLATE_STRINGLITERALS, INTROSPECTOR_RESTRICT_CLASSES, INTROSPECTOR_RESTRICT_PACKAGES, MAX_NUMBER_LOOPS, NUMBER_OF_PARSERS, OUTPUT_ENCODING, PARSE_DIRECTIVE_MAXDEPTH, PARSER_POOL_CLASS, PARSER_POOL_SIZE, RESOURCE_LOADER, RESOURCE_MANAGER_CACHE_CLASS, RESOURCE_MANAGER_CLASS, RESOURCE_MANAGER_DEFAULTCACHE_SIZE, RESOURCE_MANAGER_LOGWHENFOUND, RUNTIME_LOG, RUNTIME_LOG_ERROR_STACKTRACE, RUNTIME_LOG_INFO_STACKTRACE, RUNTIME_LOG_LOGSYSTEM, RUNTIME_LOG_LOGSYSTEM_CLASS, RUNTIME_LOG_REFERENCE_LOG_INVALID, RUNTIME_LOG_WARN_STACKTRACE, RUNTIME_REFERENCES_STRICT, SET_NULL_ALLOWED, SKIP_INVALID_ITERATOR, STRICT_MATH, TRACE_PREFIX, UBERSPECT_CLASSNAME, UNKNOWN_PREFIX, VM_ARGUMENTS_STRICT, VM_CONTEXT_LOCALSCOPE, VM_LIBRARY, VM_LIBRARY_AUTORELOAD, VM_LIBRARY_DEFAULT, VM_MAX_DEPTH, VM_MESSAGES_ON, VM_PERM_ALLOW_INLINE, VM_PERM_ALLOW_INLINE_REPLACE_GLOBAL, VM_PERM_INLINE_LOCAL, WARN_PREFIX

Constructor Summary

Runtime()
Deprecated.

Method Summary

static void	addProperty(String key, Object value) Deprecated. Add a property to the configuration.
static boolean	addVelocimacro(String name, String macro, String[] argArray, String sourceTemplate) Deprecated. Just like the whole class....
static void	clearProperty(String key) Deprecated. Clear the values pertaining to a particular property.
static void	debug(Object message) Deprecated. Log a debug message.
static boolean	dumpVMNamespace(String namespace) Deprecated. tells the vmFactory to dump the specified namespace.
static void	error(Object message) Deprecated. Log an error message.
static boolean	getBoolean(String key, boolean def) Deprecated. Boolean property accessor method to hide the configuration implementation.
static ExtendedProperties	getConfiguration() Deprecated. Return the velocity runtime configuration object.
static ContentResource	getContent(String name) Deprecated. Returns a static content resource from the resource manager.
static ContentResource	getContent(String name, String encoding) Deprecated. Returns a static content resource from the resource manager.
static int	getInt(String key) Deprecated. Int property accessor method to hide the configuration implementation.
static int	getInt(String key, int defaultValue) Deprecated. Int property accessor method to hide the configuration implementation.
static String	getLoaderNameForResource(String resourceName) Deprecated. Determines is a template exists, and returns name of the loader that provides it.
static Object	getProperty(String key) Deprecated. Allows an external caller to get a property.
static String	getString(String key) Deprecated. String property accessor method to hide the configuration implementation
static String	getString(String key, String defaultValue) Deprecated. String property accessor method with default to hide the configuration implementation.
static Template	getTemplate(String name) Deprecated. Returns a Template from the resource manager.
static Template	getTemplate(String name, String encoding) Deprecated. Returns a Template from the resource manager
static Directive	getVelocimacro(String vmName, String templateName) Deprecated. Returns the appropriate VelocimacroProxy object if strVMname is a valid current Velocimacro.
static void	info(Object message) Deprecated. Log an info message.
static void	init() Deprecated. This is the primary initialization method in the Velocity Runtime.
static void	init(Properties p) Deprecated. Initialize the Velocity Runtime with a Properties object.
static void	init(String configurationFile) Deprecated. Initialize the Velocity Runtime with the name of ExtendedProperties object.
static boolean	isVelocimacro(String vmName, String templateName) Deprecated. Checks to see if a VM exists
static SimpleNode	parse(Reader reader, String templateName) Deprecated. Parse the input and return the root of AST node structure.
static SimpleNode	parse(Reader reader, String templateName, boolean dumpNamespace) Deprecated. Parse the input and return the root of the AST node structure.
static void	setConfiguration(ExtendedProperties configuration) Deprecated. Allow an external system to set an ExtendedProperties object to use.
static void	setProperty(String key, Object value) Deprecated. Allows an external system to set a property in the Velocity Runtime.
static void	warn(Object message) Deprecated. Log a warning message.

Methods inherited from class java.lang.Object

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

Constructor Detail

Runtime

public Runtime()

Deprecated.

Method Detail

init

public static void init()
                 throws Exception

Deprecated.

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

Throws:

Exception - When init fails for any reason.

setProperty

public static void setProperty(String key,
                               Object value)

Deprecated.

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

Parameters:

key - The property key.

value - The property value.

setConfiguration

public static void setConfiguration(ExtendedProperties configuration)

Deprecated.

Allow an external system to set an ExtendedProperties object to use. This is useful where the external system also uses the ExtendedProperties class and the velocity configuration is a subset of parent application's configuration. This is the case with Turbine.

Parameters:

configuration - A configuration object.

addProperty

public static void addProperty(String key,
                               Object value)

Deprecated.

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 a Vector like the following: ["file", "classpath"]

Parameters:

key - A property key.

value - The property value.

clearProperty

public static void clearProperty(String key)

Deprecated.

Clear the values pertaining to a particular property.

Parameters:

key - Name of the property to clear.

getProperty

public static Object getProperty(String key)

Deprecated.

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.

Parameters:

key - property to return

Returns:

The property value or null.

init

public static void init(Properties p)
                 throws Exception

Deprecated.

Initialize the Velocity Runtime with a Properties object.

Parameters:

p - The properties used for initializiation.

Throws:

Exception - When a problem occurs during init.

init

public static void init(String configurationFile)
                 throws Exception

Deprecated.

Initialize the Velocity Runtime with the name of ExtendedProperties object.

Parameters:

configurationFile - The name of a properties file.

Throws:

Exception - When a problem occurs during init.

parse

public static SimpleNode parse(Reader reader,
                               String templateName)
                        throws ParseException

Deprecated.

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.

Parameters:

reader - A reader returning the template input stream.

templateName - name of the template being parsed

Returns:

The root node of an AST structure for the template input stream.

Throws:

ParseException - When the input stream is not parsable.

parse

public static SimpleNode parse(Reader reader,
                               String templateName,
                               boolean dumpNamespace)
                        throws ParseException

Deprecated.

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

Parameters:

reader - A reader returning the template input stream.

templateName - name of the template being parsed

dumpNamespace - flag to dump the Velocimacro namespace for this template.

Returns:

The root node of an AST structure for the template input stream.

Throws:

ParseException - When the input stream is not parsable.

See Also:

parse(Reader, String)

getTemplate

public static Template getTemplate(String name)
                            throws ResourceNotFoundException,
                                   ParseErrorException,
                                   Exception

Deprecated.

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"

Parameters:

name - The file name of the desired template.

Returns:

The template.

Throws:

ResourceNotFoundException - if template not found from any available source.

ParseErrorException - if template cannot be parsed due to syntax (or other) error.

Exception - if an error occurs in template initialization.

getTemplate

public static Template getTemplate(String name,
                                   String encoding)
                            throws ResourceNotFoundException,
                                   ParseErrorException,
                                   Exception

Deprecated.

Returns a Template from the resource manager

Parameters:

name - The name of the desired template.

encoding - Character encoding of the template

Returns:

The template.

Throws:

ResourceNotFoundException - if template not found from any available source.

ParseErrorException - if template cannot be parsed due to syntax (or other) error.

Exception - if an error occurs in template initialization

getContent

public static ContentResource getContent(String name)
                                  throws ResourceNotFoundException,
                                         ParseErrorException,
                                         Exception

Deprecated.

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

Parameters:

name - Name of content resource to get

Returns:

parsed ContentResource object ready for use

Throws:

ResourceNotFoundException - if template not found from any available source.

ParseErrorException - if template cannot be parsed due to syntax (or other) error.

Exception - if an error occurs in template initialization

getContent

public static ContentResource getContent(String name,
                                         String encoding)
                                  throws ResourceNotFoundException,
                                         ParseErrorException,
                                         Exception

Deprecated.

Returns a static content resource from the resource manager.

Parameters:

name - Name of content resource to get

encoding - Character encoding to use

Returns:

parsed ContentResource object ready for use

Throws:

ResourceNotFoundException - if template not found from any available source.

ParseErrorException - if template cannot be parsed due to syntax (or other) error.

Exception - if an error occurs in template initialization

getLoaderNameForResource

public static String getLoaderNameForResource(String resourceName)

Deprecated.

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.

Parameters:

resourceName - Name of template or content resource

Returns:

class name of loader than can provide it

warn

public static void warn(Object message)

Deprecated.

Log a warning message.

Parameters:

message - message to log

info

public static void info(Object message)

Deprecated.

Log an info message.

Parameters:

message - message to log

error

public static void error(Object message)

Deprecated.

Log an error message.

Parameters:

message - message to log

debug

public static void debug(Object message)

Deprecated.

Log a debug message.

Parameters:

message - message to log

getString

public static String getString(String key,
                               String defaultValue)

Deprecated.

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

Parameters:

key - A property key.

defaultValue - default value to return if key not found in resource manager.

Returns:

The property value of of key or default.

getVelocimacro

public static Directive getVelocimacro(String vmName,
                                       String templateName)

Deprecated.

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

Parameters:

vmName - Name of velocimacro requested

templateName - The template from which the macro is requested.

Returns:

A VelocimacroProxy object for the macro.

addVelocimacro

public static boolean addVelocimacro(String name,
                                     String macro,
                                     String[] argArray,
                                     String sourceTemplate)

Deprecated. Just like the whole class....

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

Parameters:

name - Name of a new velocimacro.

macro - String form of the macro body.

argArray - Array of strings, containing the #macro() arguments. the 0th argument is the name.

sourceTemplate - The template from which the macro is requested.

Returns:

boolean True if added, false if rejected for some reason (either parameters or permission settings)

isVelocimacro

public static boolean isVelocimacro(String vmName,
                                    String templateName)

Deprecated.

Checks to see if a VM exists

Parameters:

vmName - The name of velocimacro.

templateName - The template from which the macro is requested.

Returns:

boolean True if VM by that name exists, false if not

dumpVMNamespace

public static boolean dumpVMNamespace(String namespace)

Deprecated.

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

Parameters:

namespace - The namespace to dump.

Returns:

True if the namespace has been dumped.

getString

public static String getString(String key)

Deprecated.

String property accessor method to hide the configuration implementation

Parameters:

key - property key

Returns:

value of key or null

getInt

public static int getInt(String key)

Deprecated.

Int property accessor method to hide the configuration implementation.

Parameters:

key - A property key.

Returns:

Integer value for this key.

getInt

public static int getInt(String key,
                         int defaultValue)

Deprecated.

Int property accessor method to hide the configuration implementation.

Parameters:

key - property key

defaultValue - default value

Returns:

The integer value.

getBoolean

public static boolean getBoolean(String key,
                                 boolean def)

Deprecated.

Boolean property accessor method to hide the configuration implementation.

Parameters:

key - property key

def - default default value if property not found

Returns:

boolean value of key or default value

getConfiguration

public static ExtendedProperties getConfiguration()

Deprecated.

Return the velocity runtime configuration object.

Returns:

ExtendedProperties configuration object which houses the velocity runtime properties.