# Package groovy.lang

package groovy.lang

Class
Description
AdaptingMetaClass
An interface for MetaClass instances that "adapt" other MetaClass instances such as a proxy or delegating MetaClass.
BenchmarkInterceptor
Interceptor that registers the timestamp of each method call before and after invocation.
Binding
Represents the variable bindings of a script which can be altered from outside the script object or created outside of a script and passed into it.
Buildable
Category
Transforms an instance-style Groovy class or interface to become a static-style conventional Groovy category.
Closure<V>
Represents any closure object in Groovy.
ClosureException
An exception thrown by a closure invocation
ClosureInvokingMethod
An interface for MetaMethods that invoke closures to implements.
Delegate
Field annotation to automatically delegate part of the functionality of an owner class to the annotated field.
DelegatesTo
This annotation can be used by API or DSL writers to document parameters which accept a closure.
DelegatesTo.Target
Parameter annotation used to specify the delegate for a `@DelegatesTo` annotated parameter of the same method.
DelegatingMetaClass
DeprecationException
Use this exception to mark a method implementation as being deprecated.
EmptyRange
Constructing Ranges like 0..<0
ExpandoMetaClass
ExpandoMetaClass is a MetaClass that behaves like an Expando, allowing the addition or replacement of methods, properties and constructors on the fly.
ExpandoMetaClassCreationHandle
A handle for the MetaClassRegistry that changes all classes loaded into the Grails VM to use ExpandoMetaClass instances
GeneratedGroovyProxy
An interface implemented by some Groovy proxies which gives access to the proxied object.
Grab
Used to grab the referenced artifact and its dependencies and make it available on the Classpath.
GrabConfig
Used to modify the grape configuration for grab requests.
GrabExclude
Used to exclude an indirectly referenced artifact (a transitive dependency) from the classpath.
GrabResolver
Used to add a repository for resolving Grape dependencies.
Grapes
Sometimes we will need more than one grab per class, but we can only add one annotation type per annotatable node.
GroovyCallable<V>
A special "marker" style interface allowing Groovy classes to implement both Runnable and Callable yet give preference to Runnable (for backwards compatibility) for APIs having both Runnable and Callable methods.
GroovyClassLoader
A ClassLoader which can load Groovy classes.
GroovyClassLoader.ClassCollector
GroovyClassLoader.InnerLoader
GroovyCodeSource
CodeSource wrapper class that allows specific security policies to be associated with a class compiled from groovy source.
GroovyInterceptable
Marker interface used to notify that all methods should be intercepted through the `invokeMethod` mechanism of `GroovyObject`.
GroovyObject
The interface implemented by all Groovy objects.
GroovyObjectSupport
A useful base class for Java objects wishing to be Groovy objects
GroovyResourceLoader
Allows frameworks that integrate with Groovy to determine how Groovy files are resolved.
GroovyRuntimeException
An exception thrown by the interpreter
GroovyShell
Represents a groovy shell capable of running arbitrary groovy scripts
GroovySystem
GString
Represents a String which contains embedded values such as "hello there ${user} how are you?" which can be evaluated lazily.
IllegalPropertyAccessException
An exception occurred if a dynamic property dispatch fails with a field not accessible.
IncorrectClosureArgumentsException
An exception occurred when invoking a Closure with the wrong number and/or types of arguments
Interceptor
Implementers of this interface can be registered in the ProxyMetaClass for notifications about method calls for objects managed by the ProxyMetaClass.
IntRange
Represents a list of Integer objects from a specified int up (or down) to and including a given to.
Lazy
Field annotation to simplify lazy initialization.
ListWithDefault<T>
A wrapper for `List` which automatically grows the list when either `ListWithDefault.get(int)` or `ListWithDefault.getAt(int)` is called with an index greater than or equal to `size()`.
MapWithDefault<K,V>
A wrapper for Map which allows a default value to be specified.
MetaArrayLengthProperty
Represents the length property of an array
MetaBeanProperty
Represents a property on a bean which may have a getter and/or a setter
MetaClass
A MetaClass within Groovy defines the behaviour of any given Groovy or Java class.
MetaClassImpl
Allows methods to be dynamically added to existing classes at runtime
MetaClassImpl.Index
MetaClassImpl.MetaConstructor
This is a helper class introduced in Groovy 2.1.0, which is used only by indy.
MetaClassRegistry
A MetaClassRegistry is an object that is responsible for managing the a cache of MetaClass instances.
MetaClassRegistry.MetaClassCreationHandle
Class used as base for the creation of MetaClass implementations.
MetaClassRegistryChangeEvent
An event used to propagate meta class updates
MetaClassRegistryChangeEventListener
A listener called whenever a constant MetaClass is set, removed or replaced.
MetaExpandoProperty
Represents a property in an Expando object
MetaMethod
Represents a Method on a Java object a little like `Method` except without using reflection to invoke the method
MetaObjectProtocol
An interface that defines the API usable by clients of Groovy's Meta Object Protocol (MOP).
MetaProperty
Represents a property on a bean which may have a getter and/or a setter
MissingClassException
An exception occurred if a dynamic method dispatch fails with an unknown class.
MissingFieldException
An exception occurred if a dynamic field dispatch fails with an unknown field.
MissingMethodException
An exception occurred if a dynamic method dispatch fails with an unknown method.
MissingPropertyException
An exception occurred if a dynamic property dispatch fails with an unknown property.
Mixin
Deprecated.
static mixins have been deprecated in favour of traits (trait keyword).
MutableMetaClass
An interface that defines methods that implementers of mutable Meta classes should specify.
Newify
Annotation that supports writing constructor call expressions without the 'new' keyword.
NonEmptySequence
Represents a sequence of objects which represents one or many instances of of objects of a given type.
ObjectRange
Represents an inclusive list of objects from a value to a value using comparators.
ParameterArray
Distinguish a parameter array from Object[].
PropertyAccessInterceptor
An interface that adds the ability to intercept property getters/setters
PropertyValue
ProxyMetaClass
As subclass of MetaClass, ProxyMetaClass manages calls from Groovy Objects to POJOs.
Range<T extends Comparable>
A Range represents the list of all items obtained by starting from a `from` value and calling `next()` successively until you reach the `to` value.
ReadOnlyPropertyException
This exception is thrown if an attempt is made to set a read only property
Reference<T>
Represents a reference to a value
Script
This object represents a Groovy script
Sequence
Represents a sequence of objects which represents zero or many instances of of objects of a given type.
Singleton
Class annotation to make a singleton class.
SpreadListEvaluatingException
SpreadMap
Helper to turn a list with an even number of elements into a Map.
SpreadMapEvaluatingException
StringWriterIOException
An IO exception occurred trying to append to a StringWriter which should never happen.
TracingInterceptor
Tuple
Represents a list of Objects.
Tuple2<T1,T2>
Represents a list of 2 typed Objects.
Writable
Represents an object which is capable of writing itself to a text stream in a more efficient format than just creating a toString() representation of itself.