- org.apache.tapestry5.http.TapestryHttpSymbolConstants

public final class TapestryHttpSymbolConstants
extends

Class defining constants for Tapestry HTTP symbols.

Field Summary

Fields
Modifier and Type	Field	Description
`static`	`APPLICATION_VERSION`	Version number of the application.
`static`	`CHARSET`	The charset used when rendering page markup; the charset is also used as the request encoding when handling incoming requests.
`static`	`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`	`CONTEXT_PATH`	Identifies the context path of the application, as determined from .
`static`	`EXECUTION_MODE`	A comma separated list of execution modes used to control how the application is initialized.
`static`	`GZIP_COMPRESSION_ENABLED`	If "true" (the default) then GZip compression is enabled for dynamic requests and for static assets.
`static`	`HOSTNAME`	The hostname that application should use when constructing an absolute URL.
`static`	`HOSTPORT`	The hostport that application should use when constructing an absolute URL.
`static`	`HOSTPORT_SECURE`	The secure (https) hostport that application should use when constructing an absolute URL.
`static`	`MIN_GZIP_SIZE`	Minimum output stream size, in bytes, before output is compressed using GZIP.
`static`	`PRODUCTION_MODE`	Indicates whether Tapestry is running in production mode or developer mode.
`static`	`SESSION_LOCKING_ENABLED`	If true (the default), then Tapestry will apply locking semantics around access to the .
`static`	`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 Description

TapestryHttpSymbolConstants()

Method Summary
- Methods inherited from class java.lang.
  , , , , , , , , , ,

- Field Detail
  - HOSTNAME
```
public static final  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  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  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. This is an alias to HOSTPORT_SECURE.
    
    Since:
    
    5.3
    
    See Also:
    
    Constant Field Values
  - CLUSTERED_SESSIONS
```
public static final  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
  - SESSION_LOCKING_ENABLED
```
public static final  SESSION_LOCKING_ENABLED
```
    If true (the default), then Tapestry will apply locking semantics around access to the . 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
  - APPLICATION_VERSION
```
public static final  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:
    
    Constant Field Values
  - PRODUCTION_MODE
```
public static final  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
  - TAPESTRY_VERSION
```
public static final  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
  - CONTEXT_PATH
```
public static final  CONTEXT_PATH
```
    Identifies the context path of the application, as determined from . 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
  - EXECUTION_MODE
```
public static final  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
  - CHARSET
```
public static final  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
  - MIN_GZIP_SIZE
```
public static final  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
  - GZIP_COMPRESSION_ENABLED
```
public static final  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
- Constructor Detail
  - TapestryHttpSymbolConstants
```
public TapestryHttpSymbolConstants()
```

Class TapestryHttpSymbolConstants

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.

Field Detail

HOSTNAME

HOSTPORT

HOSTPORT_SECURE

CLUSTERED_SESSIONS

SESSION_LOCKING_ENABLED

APPLICATION_VERSION

PRODUCTION_MODE

TAPESTRY_VERSION

CONTEXT_PATH

EXECUTION_MODE

CHARSET

MIN_GZIP_SIZE

GZIP_COMPRESSION_ENABLED

Constructor Detail

TapestryHttpSymbolConstants