SymbolConstants (Tapestry API

java.lang.Object
- org.apache.tapestry5.SymbolConstants

```
public class SymbolConstants
extends java.lang.Object
```
Defines the names of symbols used to configure Tapestry.

See Also:

SymbolSource

Field Summary

Fields
Modifier and Type	Field and Description
`static java.lang.String`	`APPLICATION_CATALOG` The location of the application-wide component messages catalog, relative to the web application context.
`static java.lang.String`	`APPLICATION_FOLDER` The name of a folder in which the Tapestry application executes.
`static java.lang.String`	`APPLICATION_VERSION` Version number of the application.
`static java.lang.String`	`ASSET_PATH_PREFIX` Prefix to be used for all resource paths, used to recognize which requests are for assets.
`static java.lang.String`	`ASSET_URL_FULL_QUALIFIED` Boolean value to indicate if every `Asset2` should be fully qualified or not.
`static java.lang.String`	`BOOTSTRAP_ROOT` The root asset path for Twitter Bootstrap; if your application uses a modified version of Bootstrap, you can override this symbol to have Tapestry automatically use your version.
`static java.lang.String`	`CHARSET` The charset used when rendering page markup; the charset is also used as the request encoding when handling incoming requests.
`static java.lang.String`	`CLUSTERED_SESSIONS` If "true" then at the end of each request the `SessionPersistedObjectAnalyzer` will be called on each session persisted object that was accessed during the request.
`static java.lang.String`	`COMBINE_SCRIPTS` If "true" then JavaScript files in a `JavaScriptStack` will be combined into a single virtual JavaScript file.
`static java.lang.String`	`COMPACT_JSON` If "true", then JSON page initialization content is compressed; if "false" then extra white space is added (pretty printing).
`static java.lang.String`	`COMPONENT_RENDER_TRACING_ENABLED` If "true" and `PRODUCTION_MODE` is off, comments will be rendered before and after the rendering of any component allowing more visibility into which components rendered which markup.
`static java.lang.String`	`COMPRESS_WHITESPACE` Controls whether whitespace is compressed by default in templates, or left as is.
`static java.lang.String`	`CONTEXT_PATH` Identifies the context path of the application, as determined from `ServletContext.getContextPath()`.
`static java.lang.String`	`COOKIE_MAX_AGE` The default time interval that cookies created by Tapestry will be kept in the client web browser.
`static java.lang.String`	`DATEPICKER` The Asset path to the embedded datepicker.
`static java.lang.String`	`DEFAULT_STYLESHEET` Deprecated. Deprecated in 5.4 with no replacement; the stylesheet is now associated with the core `JavaScriptStack`.
`static java.lang.String`	`ENABLE_HTML5_SUPPORT` Defines whether HTML5 features should be used.
`static java.lang.String`	`ENABLE_PAGELOADING_MASK` If true, then when a page includes any JavaScript, a `script` block is added to insert a pageloader mask into the page; the pageloader mask ensure that the user can't interact with the page until after the page is fully initialized.
`static java.lang.String`	`ENCODE_LOCALE_INTO_PATH` If "true" (the default), then the `PersistentLocale` will be encoded into the `Link` path by the `ComponentEventLinkEncoder` service.
`static java.lang.String`	`EXCEPTION_REPORT_PAGE` Name of page used to report exceptions; the page must implement `ExceptionReporter`.
`static java.lang.String`	`EXCEPTION_REPORTS_DIR` The directory to which exception report files should be written.
`static java.lang.String`	`EXECUTION_MODE` A comma separated list of execution modes used to control how the application is initialized.
`static java.lang.String`	`FILE_CHECK_INTERVAL` Time interval defining how often Tapestry will check for updates to local files (including classes).
`static java.lang.String`	`FILE_CHECK_UPDATE_TIMEOUT` Time interval that sets how long Tapestry will wait to obtain the exclusive lock needed to check local files.
`static java.lang.String`	`FORM_CLIENT_LOGIC_ENABLED` Used as the default for the Form's autofocus and clientValidation parameters.
`static java.lang.String`	`FORM_FIELD_CSS_CLASS` Defines the CSS class that will be given to form field components which are AbstractField subclasses.
`static java.lang.String`	`FORM_GROUP_FORM_FIELD_WRAPPER_ELEMENT_CSS_CLASS` Defines the CSS class of the HTML element generated by the FormGroup mixin and the BeanEditForm and BeanEditor.
`static java.lang.String`	`FORM_GROUP_FORM_FIELD_WRAPPER_ELEMENT_NAME` Defines the name of the HTML element that will surround the HTML form field generated by the FormGroup mixin and the BeanEditForm and BeanEditor.
`static java.lang.String`	`FORM_GROUP_LABEL_CSS_CLASS` Defines the CSS class that will be given to <label> element generated by the FormGroup mixin and the BeanEditForm and BeanEditor components.
`static java.lang.String`	`FORM_GROUP_WRAPPER_CSS_CLASS` Defines the CSS class that will be given to HTML element (usually a div) <div> generated by the FormGroup mixin and the BeanEditForm and BeanEditor components surrounding the label and the field.
`static java.lang.String`	`GZIP_COMPRESSION_ENABLED` If "true" (the default) then GZip compression is enabled for dynamic requests and for static assets.
`static java.lang.String`	`HMAC_PASSPHRASE` A passphrase used as the basis of hash-based message authentication (HMAC) for any object stream data stored on the client.
`static java.lang.String`	`HOSTNAME` The hostname that application should use when constructing an absolute URL.
`static java.lang.String`	`HOSTPORT` The hostport that application should use when constructing an absolute URL.
`static java.lang.String`	`HOSTPORT_SECURE` The secure (https) hostport that application should use when constructing an absolute URL.
`static java.lang.String`	`INCLUDE_CORE_STACK` If true (the default), then Tapestry will automatically include the "core" stack in all pages.
`static java.lang.String`	`JAVASCRIPT_INFRASTRUCTURE_PROVIDER` Tapestry relies on an underlying client-side JavaScript infrastructure framework to handle DOM manipulation, event handling, and Ajax requests.
`static java.lang.String`	`LENIENT_DATE_FORMAT` Defines whether `DateFormat` instances created by Tapestry should be lenient or not by default.
`static java.lang.String`	`MIN_GZIP_SIZE` Minimum output stream size, in bytes, before output is compressed using GZIP.
`static java.lang.String`	`MINIFICATION_ENABLED` If "true", then resources (individually or when aggregated into stacks) will be minimized via the `ResourceMinimizer` service.
`static java.lang.String`	`MODULE_PATH_PREFIX` Prefix used for all module resources.
`static java.lang.String`	`OMIT_EXPIRATION_CACHE_CONTROL_HEADER` When an asset (typically, a JavaScript module) is streamed without an explicit expiration header, then this value is sent as the `Cache-Control` header; the default is "max-age=60, must-revalidate".
`static java.lang.String`	`OMIT_GENERATOR_META` Used to omit the normal Tapestry framework generator meta tag.
`static java.lang.String`	`PERSISTENCE_STRATEGY` Identifies the default persistence strategy for all pages that do not provide an override (using this value as `key`).
`static java.lang.String`	`PRELOADER_MODE` Controls in what environment page preloading should occur.
`static java.lang.String`	`PRODUCTION_MODE` Indicates whether Tapestry is running in production mode or developer mode.
`static java.lang.String`	`PRODUCTION_MODE_VALUE` A version of `PRODUCTION_MODE` as a symbol reference.
`static java.lang.String`	`RESTRICTIVE_ENVIRONMENT` A general switch for restrictive environments, such as Google App Engine, which forbid some useful operations, such as creating files or directories.
`static java.lang.String`	`SCRIPTACULOUS` The Asset path to the embedded copy of script.aculo.us packaged with Tapestry.
`static java.lang.String`	`SECURE_ENABLED` If "true" (which itself defaults to production mode), then the `Secure` annotation will be honored.
`static java.lang.String`	`SESSION_LOCKING_ENABLED` If true (the default), then Tapestry will apply locking semantics around access to the `HttpSession`.
`static java.lang.String`	`START_PAGE_NAME` The logical name of the start page, the page that is rendered for the root URL.
`static java.lang.String`	`STRICT_CSS_URL_REWRITING` Defines whether `CSSURLRewriter` will throw an exception when a CSS file references an URL which doesn't exist.
`static java.lang.String`	`SUPPORTED_LOCALES` The list of locales supported by the application; locales identified in the incoming request are "narrowed" to one of these values.
`static java.lang.String`	`TAPESTRY_VERSION` The version number of the core Tapestry framework, or UNKNOWN if the version number is not available (which should only occur when developing Tapestry).

Constructor Summary

Constructors
Constructor and Description

SymbolConstants()

Constructors
Constructor and Description
`SymbolConstants()`

Method Summary
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - EXECUTION_MODE
```
public static final java.lang.String EXECUTION_MODE
```
    A comma separated list of execution modes used to control how the application is initialized. Each modes can contribute a list (comma separated) of Module classes to be loaded during startup, the order in which they appear is preserved. The default value is: production.
    
    See Also:
    
    Constant Field Values
  - PRODUCTION_MODE
```
public static final java.lang.String PRODUCTION_MODE
```
    Indicates whether Tapestry is running in production mode or developer mode. This affects a large number of Tapestry behaviors related to performance and security, including how exceptions are reported, whether far-future expire headers are emitted, whether JavaScript files may be combined, whether JSON is compressed, whether component field and parameter values are shadowed to instance variables (to assist with debugging), and more.
    
    See Also:
    
    Constant Field Values
  - PRODUCTION_MODE_VALUE
```
public static final java.lang.String PRODUCTION_MODE_VALUE
```
    A version of PRODUCTION_MODE as a symbol reference. This can be used as the default value of other symbols, to indicate that their default matches whatever PRODUCTION_MODE is set to, which is quite common.
    
    Since:
    
    5.2.0
  - SUPPORTED_LOCALES
```
public static final java.lang.String SUPPORTED_LOCALES
```
    The list of locales supported by the application; locales identified in the incoming request are "narrowed" to one of these values. The first locale name in the list is the default locale used when no proper match can be found.
    
    See Also:
    
    Constant Field Values
  - COMPRESS_WHITESPACE
```
public static final java.lang.String COMPRESS_WHITESPACE
```
    Controls whether whitespace is compressed by default in templates, or left as is. The factory default is to compress whitespace. (This can also be overridden using the xml:space attribute inside template elements.)
    
    See Also:
    
    Constant Field Values
  - FILE_CHECK_INTERVAL
```
public static final java.lang.String FILE_CHECK_INTERVAL
```
    Time interval defining how often Tapestry will check for updates to local files (including classes). Starting with 5.3, this is only used when not running in production mode. The default is "1 s" (one second), which is appropriate for development. With Tapestry 5.2 and earlier this number should be raised in a production environment.
    
    See Also:
    
    Constant Field Values
  - FILE_CHECK_UPDATE_TIMEOUT
```
public static final java.lang.String FILE_CHECK_UPDATE_TIMEOUT
```
    Time interval that sets how long Tapestry will wait to obtain the exclusive lock needed to check local files. The default is "50 ms". Starting with 5.3, this is only used when not running in production mode.
    
    See Also:
    
    Constant Field Values
  - TAPESTRY_VERSION
```
public static final java.lang.String TAPESTRY_VERSION
```
    The version number of the core Tapestry framework, or UNKNOWN if the version number is not available (which should only occur when developing Tapestry).
    
    See Also:
    
    Constant Field Values
  - APPLICATION_CATALOG
```
public static final java.lang.String APPLICATION_CATALOG
```
    The location of the application-wide component messages catalog, relative to the web application context. This will normally be WEB-INF/app.properties.
    
    See Also:
    
    Constant Field Values
  - CHARSET
```
public static final java.lang.String CHARSET
```
    The charset used when rendering page markup; the charset is also used as the request encoding when handling incoming requests. The default is "UTF-8".
    
    See Also:
    
    Constant Field Values
  - FORM_CLIENT_LOGIC_ENABLED
```
public static final java.lang.String FORM_CLIENT_LOGIC_ENABLED
```
    Used as the default for the Form's autofocus and clientValidation parameters. If overridden to "false", then Forms will not (unless explicitly specified) use client validation or autofocus, which in turn, means that most pages with Forms will not make use of the Tapestry JavaScript stack.
    
    See Also:
    
    Constant Field Values
  - EXCEPTION_REPORT_PAGE
```
public static final java.lang.String EXCEPTION_REPORT_PAGE
```
    Name of page used to report exceptions; the page must implement ExceptionReporter. This is used by the default exception report handler service.
    
    See Also:
    
    Constant Field Values
  - PERSISTENCE_STRATEGY
```
public static final java.lang.String PERSISTENCE_STRATEGY
```
    Identifies the default persistence strategy for all pages that do not provide an override (using this value as key).
    
    Since:
    
    5.1.0.0
    
    See Also:
    
    Constant Field Values
  - MIN_GZIP_SIZE
```
public static final java.lang.String MIN_GZIP_SIZE
```
    Minimum output stream size, in bytes, before output is compressed using GZIP. Shorter streams are not compressed. Tapestry buffers this amount and switches to a GZIP output stream as needed. The default is "100".
    
    Since:
    
    5.1.0.0
    
    See Also:
    
    GZIP_COMPRESSION_ENABLED, Constant Field Values
  - APPLICATION_VERSION
```
public static final java.lang.String APPLICATION_VERSION
```
    Version number of the application. Prior to 5.4, this version number was integrated into asset URLs. Starting with 5.4, a checksum of the individual asset's content is used instead, and this version number is only used for documentation purposes; it appears in the default exception report page, for example. The default value is "0.0.1". In 5.3 and earlier, the default value was a random hexadecimal string.
    
    Since:
    
    5.1.0.0
    
    See Also:
    
    AssetDispatcher, AssetPathConstructor, Constant Field Values
  - OMIT_GENERATOR_META
```
public static final java.lang.String OMIT_GENERATOR_META
```
    Used to omit the normal Tapestry framework generator meta tag. The meta tag is rendered by default, but clients who do not wish to advertise their use of Tapestry may set this symbol to "true".
    
    Since:
    
    5.1.0.0
    
    See Also:
    
    Constant Field Values
  - GZIP_COMPRESSION_ENABLED
```
public static final java.lang.String GZIP_COMPRESSION_ENABLED
```
    If "true" (the default) then GZip compression is enabled for dynamic requests and for static assets. If you are using a server that handles GZip compression for you, or you don't want to use the extra processing power necessary to GZIP requests, then override this to "false".
    
    Since:
    
    5.1.0.0
    
    See Also:
    
    MIN_GZIP_SIZE, ResponseCompressionAnalyzer, CompressionAnalyzer, Constant Field Values
  - SECURE_ENABLED
```
public static final java.lang.String SECURE_ENABLED
```
    If "true" (which itself defaults to production mode), then the Secure annotation will be honored. If "false" (i.e., development mode), then the annotation and related HTTP/HTTPS logic is ignored.
    
    Since:
    
    5.1.0.1
    
    See Also:
    
    Constant Field Values
  - ENCODE_LOCALE_INTO_PATH
```
public static final java.lang.String ENCODE_LOCALE_INTO_PATH
```
    If "true" (the default), then the PersistentLocale will be encoded into the Link path by the ComponentEventLinkEncoder service. If overridden to "false" this does not occur, but you should provide a LinkCreationListener2 (registered with the LinkCreationHub) in order to add the locale as a query parameter (or provide some alternate means of persisting the locale between requests).
    
    Since:
    
    5.1.0.1
    
    See Also:
    
    Constant Field Values
  - COMBINE_SCRIPTS
```
public static final java.lang.String COMBINE_SCRIPTS
```
    If "true" then JavaScript files in a JavaScriptStack will be combined into a single virtual JavaScript file. Defaults to "true" in production mode.
    
    Since:
    
    5.1.0.2
    
    See Also:
    
    Constant Field Values
  - COOKIE_MAX_AGE
```
public static final java.lang.String COOKIE_MAX_AGE
```
    The default time interval that cookies created by Tapestry will be kept in the client web browser. The default is "7 d" (that is, seven days).
    
    Since:
    
    5.2.0
    
    See Also:
    
    Constant Field Values
  - START_PAGE_NAME
```
public static final java.lang.String START_PAGE_NAME
```
    The logical name of the start page, the page that is rendered for the root URL.
    
    Since:
    
    5.2.0
    
    See Also:
    
    Constant Field Values
  - DEFAULT_STYLESHEET
```
public static final java.lang.String DEFAULT_STYLESHEET
```
    Deprecated. Deprecated in 5.4 with no replacement; the stylesheet is now associated with the core JavaScriptStack.
    
    The default stylesheet automatically inserted into every rendered HTML page.
    
    Since:
    
    5.2.0
    
    See Also:
    
    Constant Field Values
  - SCRIPTACULOUS
```
public static final java.lang.String SCRIPTACULOUS
```
    The Asset path to the embedded copy of script.aculo.us packaged with Tapestry.
    
    Since:
    
    5.2.0
    
    See Also:
    
    Constant Field Values
  - DATEPICKER
```
public static final java.lang.String DATEPICKER
```
    The Asset path to the embedded datepicker.
    
    Since:
    
    5.2.0
    
    See Also:
    
    Constant Field Values
  - COMPACT_JSON
```
public static final java.lang.String COMPACT_JSON
```
    If "true", then JSON page initialization content is compressed; if "false" then extra white space is added (pretty printing). Defaults to "true" in production mode.
    
    Since:
    
    5.2.0
    
    See Also:
    
    Constant Field Values
  - COMPONENT_RENDER_TRACING_ENABLED
```
public static final java.lang.String COMPONENT_RENDER_TRACING_ENABLED
```
    If "true" and PRODUCTION_MODE is off, comments will be rendered before and after the rendering of any component allowing more visibility into which components rendered which markup. Defaults to "false". Component render tracing may be enabled per-request by the presence of a request parameter "t:component-trace" with a value of "true".
    
    Since:
    
    5.2.5
    
    See Also:
    
    Constant Field Values
  - HOSTNAME
```
public static final java.lang.String HOSTNAME
```
    The hostname that application should use when constructing an absolute URL. The default is "", i.e. an empty string, in which case system will use request.getServerName(). Not the same as environment variable HOSTNAME, but you can also contribute "$HOSTNAME" as the value to make it the same as the environment variable HOSTNAME.
    
    Since:
    
    5.3
    
    See Also:
    
    Constant Field Values
  - HOSTPORT
```
public static final java.lang.String HOSTPORT
```
    The hostport that application should use when constructing an absolute URL. The default is "0", i.e. use the port value from the request.
    
    Since:
    
    5.3
    
    See Also:
    
    Constant Field Values
  - HOSTPORT_SECURE
```
public static final java.lang.String HOSTPORT_SECURE
```
    The secure (https) hostport that application should use when constructing an absolute URL. The default is "0", i.e. use the value from the request.
    
    Since:
    
    5.3
    
    See Also:
    
    Constant Field Values
  - MINIFICATION_ENABLED
```
public static final java.lang.String MINIFICATION_ENABLED
```
    If "true", then resources (individually or when aggregated into stacks) will be minimized via the ResourceMinimizer service. If "false", then minification is disabled. Tracks production mode (minification is normally disabled in development mode). Note that Tapestry's default implementation of ResourceMinimizer does nothing; minification is provided by add-on libraries.
    
    Since:
    
    5.3
    
    See Also:
    
    Constant Field Values
  - CLUSTERED_SESSIONS
```
public static final java.lang.String CLUSTERED_SESSIONS
```
    If "true" then at the end of each request the SessionPersistedObjectAnalyzer will be called on each session persisted object that was accessed during the request. This is provided as a performance enhancement for servers that do not use clustered sessions. The default is true, to preserve 5.2 behavior. For non-clustered applications (the majority), this value should be overridden to false. A future release of Tapestry may change the default.
    
    Since:
    
    5.3
    
    See Also:
    
    Constant Field Values
  - APPLICATION_FOLDER
```
public static final java.lang.String APPLICATION_FOLDER
```
    The name of a folder in which the Tapestry application executes. Prior to 5.3, a Tapestry application always responded to all URLs in the context under the context root; by setting this to the name of a folder, the T5 URLs will be inside that folder only, and should match a corresponding entry in the web.xml configuration file. This is useful when running multiple servlets within the same web application (such as when migrating from Tapestry 4 or some other framework, to Tapestry 5). Effectively, if this symbol is set to a value, that folder name will be placed after the context path (typically "/") and before the locale, page name, or other prefix. For example, if this symbol is set to "app", the web.xml <url-pattern> should be set to /app/*, and Tapestry will only be in invoked by the servlet container for requests inside the virtual app folder. This also affects the search for page templates (which are allowed within the web context). When set to a non-blank value, page templates are searched for in the folder, rather than in the root context. The default value is the empty string, which preserves Tapestry 5.2 behavior (and continues to be appropriate for most applications). Note that while Tapestry is case-insensitive, the servlet container is not, so the configured value must exactly match the folder name inside the <url-parameter> value, including case.
    
    Since:
    
    5.3
    
    See Also:
    
    Constant Field Values
  - ASSET_URL_FULL_QUALIFIED
```
public static final java.lang.String ASSET_URL_FULL_QUALIFIED
```
    Boolean value to indicate if every Asset2 should be fully qualified or not. Default to false meaning no Asset URL will be fully qualified.
    
    Since:
    
    5.3
    
    See Also:
    
    Constant Field Values
  - ASSET_PATH_PREFIX
```
public static final java.lang.String ASSET_PATH_PREFIX
```
    Prefix to be used for all resource paths, used to recognize which requests are for assets. This value is appended to the context path and the (optional application folder. It may contain slashes, but should not begin or end with one. The default is "assets".
    
    See Also:
    
    Constant Field Values
  - MODULE_PATH_PREFIX
```
public static final java.lang.String MODULE_PATH_PREFIX
```
    Prefix used for all module resources. This may contain slashes, but should not being or end with one. Tapestry will create two Dispatchers from this: one for normal modules, the other for GZip compressed modules (by appending ".gz" to this value). The default is "modules".
    
    Since:
    
    5.4
    
    See Also:
    
    Constant Field Values
  - CONTEXT_PATH
```
public static final java.lang.String CONTEXT_PATH
```
    Identifies the context path of the application, as determined from ServletContext.getContextPath(). This is either a blank string or a string that starts with a slash but does not end with one.
    
    Since:
    
    5.4
    
    See Also:
    
    Constant Field Values
  - HMAC_PASSPHRASE
```
public static final java.lang.String HMAC_PASSPHRASE
```
    A passphrase used as the basis of hash-based message authentication (HMAC) for any object stream data stored on the client. The default phrase is the empty string, which will result in a logged runtime error. You should configure this to a reasonable value (longer is better) and ensure that all servers in your cluster share the same value (configuring this in code, rather than the command line, is preferred).
    
    Since:
    
    5.3.6
    
    See Also:
    
    ClientDataEncoder, Constant Field Values
  - BOOTSTRAP_ROOT
```
public static final java.lang.String BOOTSTRAP_ROOT
```
    The root asset path for Twitter Bootstrap; if your application uses a modified version of Bootstrap, you can override this symbol to have Tapestry automatically use your version. The value should be a path to a folder (under "classpath:" or "context:") and should not include a trailing slash.
    
    Since:
    
    5.4
    
    See Also:
    
    Constant Field Values
  - JAVASCRIPT_INFRASTRUCTURE_PROVIDER
```
public static final java.lang.String JAVASCRIPT_INFRASTRUCTURE_PROVIDER
```
    Tapestry relies on an underlying client-side JavaScript infrastructure framework to handle DOM manipulation, event handling, and Ajax requests. Through Tapestry 5.3, the foundation was Prototype. In 5.4, support for jQuery has been added, and it is possible to add others. This symbol defines a value that is used to select a resource that is provided to the ModuleManager service as a JavaScriptModuleConfiguration to provide a specific implementation of the t5/core/dom module. Tapestry 5.4 directly supports "prototype" or "jquery". To support other foundation frameworks, override this symbol value and supply your own module configuration. In Tapestry 5.4, this defaults to "prototype" for compatibility with 5.3. This will likely change in 5.5 to default to "jquery". At some point in the future, Prototype support will no longer be present.
    
    Since:
    
    5.4
    
    See Also:
    
    Constant Field Values
  - SESSION_LOCKING_ENABLED
```
public static final java.lang.String SESSION_LOCKING_ENABLED
```
    If true (the default), then Tapestry will apply locking semantics around access to the HttpSession. Reading attribute names occurs with a shared read lock; getting or setting an attribute upgrades to an exclusive write lock. This can tend to serialize threads when a number of simultaneous (Ajax) requests from the client arrive ... however, many implementations of HttpSession are not thread safe, and often mutable objects are stored in the session and shared between threads. Leaving this on the default will yield a more robust application; setting it to false may speed up processing for more Ajax intensive applications (but care should then be given to ensuring that objects shared inside the session are themselves immutable or thread-safe).
    
    Since:
    
    5.4
    
    See Also:
    
    Constant Field Values
  - INCLUDE_CORE_STACK
```
public static final java.lang.String INCLUDE_CORE_STACK
```
    If true (the default), then Tapestry will automatically include the "core" stack in all pages.
    
    Since:
    
    5.4
    
    See Also:
    
    TAP5-2169, Constant Field Values
  - FORM_GROUP_WRAPPER_CSS_CLASS
```
public static final java.lang.String FORM_GROUP_WRAPPER_CSS_CLASS
```
    Defines the CSS class that will be given to HTML element (usually a div) <div> generated by the FormGroup mixin and the BeanEditForm and BeanEditor components surrounding the label and the field. The default value is form-group.
    
    Since:
    
    5.4
    
    See Also:
    
    TAP5-2182, Constant Field Values
  - FORM_GROUP_FORM_FIELD_WRAPPER_ELEMENT_NAME
```
public static final java.lang.String FORM_GROUP_FORM_FIELD_WRAPPER_ELEMENT_NAME
```
    Defines the name of the HTML element that will surround the HTML form field generated by the FormGroup mixin and the BeanEditForm and BeanEditor. If this symbol is null or an empty string, no element will be generated surrouding the form field. The default value is the empty string (no wrapping).
    
    Since:
    
    5.4
    
    See Also:
    
    TAP5-2182, FORM_GROUP_FORM_FIELD_WRAPPER_ELEMENT_CSS_CLASS, Constant Field Values
  - FORM_GROUP_FORM_FIELD_WRAPPER_ELEMENT_CSS_CLASS
```
public static final java.lang.String FORM_GROUP_FORM_FIELD_WRAPPER_ELEMENT_CSS_CLASS
```
    Defines the CSS class of the HTML element generated by the FormGroup mixin and the BeanEditForm and BeanEditor. when FORM_GROUP_FORM_FIELD_WRAPPER_ELEMENT_NAME is not set to null or the empty string. The default value is the empty string (no CSS class added).
    
    Since:
    
    5.4
    
    See Also:
    
    TAP5-2182, Constant Field Values
  - FORM_GROUP_LABEL_CSS_CLASS
```
public static final java.lang.String FORM_GROUP_LABEL_CSS_CLASS
```
    Defines the CSS class that will be given to <label> element generated by the FormGroup mixin and the BeanEditForm and BeanEditor components. The default value is control-label.
    
    Since:
    
    5.4
    
    See Also:
    
    TAP5-2182, Constant Field Values
  - FORM_FIELD_CSS_CLASS
```
public static final java.lang.String FORM_FIELD_CSS_CLASS
```
    Defines the CSS class that will be given to form field components which are AbstractField subclasses. The default value is form-control.
    
    Since:
    
    5.4
    
    See Also:
    
    TAP5-2182, Constant Field Values
  - LENIENT_DATE_FORMAT
```
public static final java.lang.String LENIENT_DATE_FORMAT
```
    Defines whether DateFormat instances created by Tapestry should be lenient or not by default. The default value is false.
    
    Since:
    
    5.4
    
    See Also:
    
    Constant Field Values
  - EXCEPTION_REPORTS_DIR
```
public static final java.lang.String EXCEPTION_REPORTS_DIR
```
    The directory to which exception report files should be written. The default is appropriate for development: build/exceptions, and should be changed for production.
    
    Since:
    
    5.4
    
    See Also:
    
    ExceptionReporter, Constant Field Values
  - STRICT_CSS_URL_REWRITING
```
public static final java.lang.String STRICT_CSS_URL_REWRITING
```
    Defines whether CSSURLRewriter will throw an exception when a CSS file references an URL which doesn't exist. The default value is false.
    
    Since:
    
    5.4
    
    See Also:
    
    Constant Field Values
  - OMIT_EXPIRATION_CACHE_CONTROL_HEADER
```
public static final java.lang.String OMIT_EXPIRATION_CACHE_CONTROL_HEADER
```
    When an asset (typically, a JavaScript module) is streamed without an explicit expiration header, then this value is sent as the Cache-Control header; the default is "max-age=60, must-revalidate". Setting max-age to a value above zero significantly reduces the number of client requests for module content, as client browsers will then cache previously downloaded versions. For normal assets, which are immutable, and fingerprinted with a content hash, there is no need to set max age, and instead, a far-future expiration date is provided.
    
    Since:
    
    5.4
    
    See Also:
    
    Constant Field Values
  - ENABLE_HTML5_SUPPORT
```
public static final java.lang.String ENABLE_HTML5_SUPPORT
```
    Defines whether HTML5 features should be used. Value used in the default implementation of Html5Support.isHtml5SupportEnabled(). Default value: false.
    
    Since:
    
    5.4
    
    See Also:
    
    Html5Support.isHtml5SupportEnabled(), Constant Field Values
  - RESTRICTIVE_ENVIRONMENT
```
public static final java.lang.String RESTRICTIVE_ENVIRONMENT
```
    A general switch for restrictive environments, such as Google App Engine, which forbid some useful operations, such as creating files or directories. Defaults to false.
    
    Since:
    
    5.4
    
    See Also:
    
    Constant Field Values
  - ENABLE_PAGELOADING_MASK
```
public static final java.lang.String ENABLE_PAGELOADING_MASK
```
    If true, then when a page includes any JavaScript, a script block is added to insert a pageloader mask into the page; the pageloader mask ensure that the user can't interact with the page until after the page is fully initialized.
    
    Since:
    
    5.4
    
    See Also:
    
    Constant Field Values
  - PRELOADER_MODE
```
public static final java.lang.String PRELOADER_MODE
```
    Controls in what environment page preloading should occur. By default, preloading only occurs in production.
    
    Since:
    
    5.4
    
    See Also:
    
    PagePreloader, PreloaderMode, Constant Field Values
- Constructor Detail
  - SymbolConstants
```
public SymbolConstants()
```

Class SymbolConstants

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

EXECUTION_MODE

PRODUCTION_MODE

PRODUCTION_MODE_VALUE

SUPPORTED_LOCALES

COMPRESS_WHITESPACE

FILE_CHECK_INTERVAL

FILE_CHECK_UPDATE_TIMEOUT

TAPESTRY_VERSION

APPLICATION_CATALOG

CHARSET

FORM_CLIENT_LOGIC_ENABLED

EXCEPTION_REPORT_PAGE

PERSISTENCE_STRATEGY

MIN_GZIP_SIZE

APPLICATION_VERSION

OMIT_GENERATOR_META

GZIP_COMPRESSION_ENABLED

SECURE_ENABLED

ENCODE_LOCALE_INTO_PATH

COMBINE_SCRIPTS

COOKIE_MAX_AGE

START_PAGE_NAME

DEFAULT_STYLESHEET

SCRIPTACULOUS

DATEPICKER

COMPACT_JSON

COMPONENT_RENDER_TRACING_ENABLED

HOSTNAME

HOSTPORT

HOSTPORT_SECURE

MINIFICATION_ENABLED

CLUSTERED_SESSIONS

APPLICATION_FOLDER

ASSET_URL_FULL_QUALIFIED

ASSET_PATH_PREFIX

MODULE_PATH_PREFIX

CONTEXT_PATH

HMAC_PASSPHRASE

BOOTSTRAP_ROOT

JAVASCRIPT_INFRASTRUCTURE_PROVIDER

SESSION_LOCKING_ENABLED

INCLUDE_CORE_STACK

FORM_GROUP_WRAPPER_CSS_CLASS

FORM_GROUP_FORM_FIELD_WRAPPER_ELEMENT_NAME

FORM_GROUP_FORM_FIELD_WRAPPER_ELEMENT_CSS_CLASS

FORM_GROUP_LABEL_CSS_CLASS

FORM_FIELD_CSS_CLASS

LENIENT_DATE_FORMAT

EXCEPTION_REPORTS_DIR

STRICT_CSS_URL_REWRITING

OMIT_EXPIRATION_CACHE_CONTROL_HEADER

ENABLE_HTML5_SUPPORT

RESTRICTIVE_ENVIRONMENT

ENABLE_PAGELOADING_MASK

PRELOADER_MODE

Constructor Detail

SymbolConstants