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## Package groovy.lang

Core Groovy language classes for implementing data structures, closures, metadata and so forth.

See:
Description

Interface Summary
AdaptingMetaClass | An interface for MetaClass instances that "adapt" other MetaClass instances such as a proxy or delegating MetaClass
Buildable |
ClosureInvokingMethod | An interface for MetaMethods that invoke closures to implements.
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.
GroovyResourceLoader | Allows frameworks that integrate with Groovy to determine how Groovy files are resolved.
Interceptor | Implementers of this interface can be registered in the ProxyMetaClass for notifications about method calls for objects managed by the ProxyMetaClass.
MetaClass | A MetaClass within Groovy defines the behaviour of any given Groovy or Java class.
MetaClassRegistry | A MetaClassRegistry is an object that is responsible for managing the a cache of MetaClass instances.
MetaObjectProtocol | An interface that defines the API usable by clients of Groovy's Meta Object Protocol (MOP).
MutableMetaClass | An interface that defines methods that implementors of mutable Meta classes should specifiy.
PropertyAccessInterceptor | An interface that adds the ability to intercept property getters/setters
Range | Represents the interface of a Range implementation which includes the from and to values.
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.

Class Summary
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.
Closure | Represents any closure object in Groovy.
DelegatingMetaClass |
EmptyRange | Constructing Ranges like 0..<0
ExpandoMetaClass | A MetaClass that implements GroovyObject and behaves like an Expando, allowing the addition of new methods on the fly `// defines or replaces instance method: metaClass.myMethod = { args -> } // defines a new instance method metaClass.myMethod << { args -> } // creates multiple overloaded methods of the same name metaClass.myMethod << { String s -> } << { Integer i -> } // defines or replaces a static method with the 'static' qualifier metaClass.'`
ExpandoMetaClassCreationHandle | A handle for the MetaClassRegistry that changes all classes loaded into the Grails VM to use ExpandoMetaClass instances The handle should be registered with the Groovy runtime before Groovy loads, for example in your main method.
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.
GroovyObjectSupport | A useful base class for Java objects wishing to be Groovy objects
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?"
IntRange | Represents a list of Integer objects from a specified int up (or down) to and including a given to.
MetaArrayLengthProperty | Represents a property on a bean which may have a getter and/or a setter
MetaBeanProperty | Represents a property on a bean which may have a getter and/or a setter
MetaClassImpl | Allows methods to be dynamically added to existing classes at runtime
MetaClassImpl.Index |
MetaClassRegistry.MetaClassCreationHandle | Class used as base for the creation of MetaClass implementations.
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
MetaProperty | Represents a property on a bean which may have a getter and/or a setter
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[].
PropertyValue |
ProxyMetaClass | As subclass of MetaClass, ProxyMetaClass manages calls from Groovy Objects to POJOs.
Reference | 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.
SpreadMap | Represents a spreadable map which extends java.util.HashMap.
TracingInterceptor |
Tuple | Represents a list of Integer objects from a specified int up to but not including a given and to.

Exception Summary
ClosureException | An exception thrown by a closure invocation
DeprecationException | Use this exception to mark a method implementation as being deprecated.
GroovyRuntimeException | An exception thrown by the interpreter
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
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.
ReadOnlyPropertyException | This exception is thrown if an attempt is made to set a read only property
SpreadListEvaluatingException |
SpreadMapEvaluatingException |
StringWriterIOException | An IO exception occurred trying to append to a StringWriter which should never happen.

## Package groovy.lang Description

Core Groovy language classes for implementing data structures, closures, metadata and so forth.

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| Copyright © 2003-2008 The Codehaus. All rights reserved.
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