APIdia Launch Partner
Top Description Methods
javax.annotation.processing

public Interface ProcessingEnvironment

Imports
java.util.Map, .Locale, javax.lang.model.SourceVersion, javax.lang.model.util.Elements, .Types

An annotation processing tool framework will provide an annotation processor with an object implementing this interface so the processor can use facilities provided by the framework to write new files, report error messages, and find other utilities.

Third parties may wish to provide value-add wrappers around the facility objects from this interface, for example a Filer extension that allows multiple processors to coordinate writing out a single source file. To enable this, for processors running in a context where their side effects via the API could be visible to each other, the tool infrastructure must provide corresponding facility objects that are .equals, Filers that are .equals, and so on. In addition, the tool invocation must be able to be configured such that from the perspective of the running annotation processors, at least the chosen subset of helper classes are viewed as being loaded by the same class loader. (Since the facility objects manage shared state, the implementation of a wrapper class must know whether or not the same base facility object has been wrapped before.)

Since
1.6

Method Summary

Modifier and TypeMethod and Description
public Elements

Returns:

an implementation of some utility methods for operating on elements
getElementUtils
()

Returns an implementation of some utility methods for operating on elements.

public Filer

Returns:

the filer used to create new source, class, or auxiliary files
getFiler
()

Returns the filer used to create new source, class, or auxiliary files.

public Locale

Returns:

the current locale or null if no locale is in effect
getLocale
()

Returns the current locale or null if no locale is in effect.

public Messager

Returns:

the messager used to report errors, warnings, and other notices
getMessager
()

Returns the messager used to report errors, warnings, and other notices.

public Map<String, String>

Returns:

the processor-specific options passed to the annotation processing tool
getOptions
()

Returns the processor-specific options passed to the annotation processing tool.

public SourceVersion

Returns:

the source version that any generated source and class files should conform to
getSourceVersion
()

Returns the source version that any generated source and class files should conform to.

public Types

Returns:

an implementation of some utility methods for operating on types
getTypeUtils
()

Returns an implementation of some utility methods for operating on types.

public default boolean

Returns:

whether or not preview features are enabled
isPreviewEnabled
()

Returns true if preview features are enabled and false otherwise.

Method Detail

getElementUtilsback to summary
public Elements getElementUtils()

Returns an implementation of some utility methods for operating on elements.

Returns:Elements

an implementation of some utility methods for operating on elements

getFilerback to summary
public Filer getFiler()

Returns the filer used to create new source, class, or auxiliary files.

Returns:Filer

the filer used to create new source, class, or auxiliary files

getLocaleback to summary
public Locale getLocale()

Returns the current locale or null if no locale is in effect. The locale can be used to provide localized messages.

Returns:Locale

the current locale or null if no locale is in effect

getMessagerback to summary
public Messager getMessager()

Returns the messager used to report errors, warnings, and other notices.

Returns:Messager

the messager used to report errors, warnings, and other notices

getOptionsback to summary
public Map<String, String> getOptions()

Returns the processor-specific options passed to the annotation processing tool. Options are returned in the form of a map from option name to option value. For an option with no value, the corresponding value in the map is null.

See documentation of the particular tool infrastructure being used for details on how to pass in processor-specific options. For example, a command-line implementation may distinguish processor-specific options by prefixing them with a known string like "-A"; other tool implementations may follow different conventions or provide alternative mechanisms. A given implementation may also provide implementation-specific ways of finding options passed to the tool in addition to the processor-specific options.

Returns:Map<String, String>

the processor-specific options passed to the annotation processing tool

getSourceVersionback to summary
public SourceVersion getSourceVersion()

Returns the source version that any generated source and class files should conform to.

Returns:SourceVersion

the source version that any generated source and class files should conform to

See Also
Processor#getSupportedSourceVersion
getTypeUtilsback to summary
public Types getTypeUtils()

Returns an implementation of some utility methods for operating on types.

Returns:Types

an implementation of some utility methods for operating on types

isPreviewEnabledback to summary
public default boolean isPreviewEnabled()

Returns true if preview features are enabled and false otherwise.

Implementation Specification

The default implementation of this method returns false.

Returns:boolean

whether or not preview features are enabled

Since
13
See Also
JEP 12: Preview Features