Package groovy.lang

Class MetaClassImpl

java.lang.Object
groovy.lang.MetaClassImpl
All Implemented Interfaces:
MetaClass, MetaObjectProtocol, MutableMetaClass
Direct Known Subclasses:
ClosureMetaClass, ExpandoMetaClass, ProxyMetaClass
public class MetaClassImpl extends Object implements MetaClass, MutableMetaClass
Allows methods to be dynamically added to existing classes at runtime
See Also:

  • Field Details

    • EMPTY_ARGUMENTS

      public static final Object[] EMPTY_ARGUMENTS
      Shared empty argument array used by MOP dispatch helpers.

    • STATIC_METHOD_MISSING

      protected static final String STATIC_METHOD_MISSING
      Synthetic method name used for static methodMissing dispatch.
      See Also:

    • STATIC_PROPERTY_MISSING

      protected static final String STATIC_PROPERTY_MISSING
      Synthetic method name used for static propertyMissing dispatch.
      See Also:

    • METHOD_MISSING

      protected static final String METHOD_MISSING
      Conventional Groovy instance methodMissing hook name.
      See Also:

    • PROPERTY_MISSING

      protected static final String PROPERTY_MISSING
      Conventional Groovy instance propertyMissing hook name.
      See Also:

    • INVOKE_METHOD_METHOD

      protected static final String INVOKE_METHOD_METHOD
      Conventional Groovy instance invokeMethod hook name.
      See Also:

    • theClass

      protected final Class theClass
      Java class represented by this meta class.

    • theCachedClass

      protected final CachedClass theCachedClass
      Cached reflection view for theClass.

    • isGroovyObject

      protected final boolean isGroovyObject
      Indicates whether theClass implements GroovyObject.

    • isMap

      protected final boolean isMap
      Indicates whether theClass is assignable from Map.

    • metaMethodIndex

      protected final MetaMethodIndex metaMethodIndex
      Method index used for Groovy method selection and caching.

    • getPropertyMethod

      protected MetaMethod getPropertyMethod
      Effective getProperty handler discovered for this meta class.

    • invokeMethodMethod

      protected MetaMethod invokeMethodMethod
      Effective invokeMethod handler discovered for this meta class.

    • setPropertyMethod

      protected MetaMethod setPropertyMethod
      Effective setProperty handler discovered for this meta class.

    • registry

      protected MetaClassRegistry registry
      Registry that owns this meta class.

  • Constructor Details

    • MetaClassImpl

      public MetaClassImpl(Class theClass, MetaMethod[] add)
      Constructor
      Parameters:
      theClass - The class this is the metaclass for
      add - The methods for this class

    • MetaClassImpl

      public MetaClassImpl(Class theClass)
      Constructor that sets the methods to null
      Parameters:
      theClass - The class this is the metaclass for

    • MetaClassImpl

      public MetaClassImpl(MetaClassRegistry registry, Class theClass, MetaMethod[] add)
      Constructor with registry
      Parameters:
      registry - The metaclass registry for this MetaClass
      theClass - The class
      add - The methods

    • MetaClassImpl

      public MetaClassImpl(MetaClassRegistry registry, Class theClass)
      Constructor with registry setting methods to null
      Parameters:
      registry - The metaclass registry for this MetaClass
      theClass - The class

  • Method Details

    • getTheCachedClass

      public final CachedClass getTheCachedClass()
      Returns the cached class for this metaclass
      Returns:
      The cached class.

    • getRegistry

      public MetaClassRegistry getRegistry()
      Returns the registry for this metaclass
      Returns:
      The registry

    • respondsTo

      public List<MetaMethod> respondsTo(Object obj, String name, Object[] argTypes)
      Description copied from interface: MetaObjectProtocol

      Returns an object satisfying Groovy truth if the implementing MetaClass responds to a method with the given name and arguments types.

      Note that this method's return value is based on realised methods and does not take into account objects or classes that implement invokeMethod or methodMissing

      This method is "safe" in that it will always return a value and never throw an exception

      Specified by:
      respondsTo in interface MetaObjectProtocol
      Parameters:
      obj - The object to inspect
      name - The name of the method of interest
      argTypes - The argument types to match against
      Returns:
      A List of MetaMethods matching the argument types which will be empty if no matching methods exist
      See Also:

    • respondsTo

      public List<MetaMethod> respondsTo(Object obj, String name)
      Description copied from interface: MetaObjectProtocol

      Returns an object satisfying Groovy truth if the implementing MetaClass responds to a method with the given name regardless of arguments. In other words this method will return for foo() and foo(String).

      Note that this method's return value is based on realised methods and does not take into account objects or classes that implement invokeMethod or methodMissing

      This method is "safe" in that it will always return a value and never throw an exception

      Specified by:
      respondsTo in interface MetaObjectProtocol
      Parameters:
      obj - The object to inspect
      name - The name of the method of interest
      Returns:
      A List of MetaMethods which will be empty if no methods with the given name exist
      See Also:

    • hasProperty

      public MetaProperty hasProperty(Object obj, String name)
      Description copied from interface: MetaObjectProtocol

      Returns true of the implementing MetaClass has a property of the given name

      Note that this method will only return true for realised properties and does not take into account implementation of getProperty or propertyMissing

      Specified by:
      hasProperty in interface MetaObjectProtocol
      Parameters:
      obj - The object to inspect
      name - The name of the property
      Returns:
      The MetaProperty or null if it doesn't exist
      See Also:

    • getMetaProperty

      public MetaProperty getMetaProperty(String name)
      Description copied from interface: MetaObjectProtocol
      Returns a MetaProperty for the given name or null if it doesn't exist
      Specified by:
      getMetaProperty in interface MetaObjectProtocol
      Parameters:
      name - The name of the MetaProperty
      Returns:
      A MetaProperty or null
      See Also:

    • getStaticMetaMethod

      public MetaMethod getStaticMetaMethod(String name, Object[] argTypes)
      Description copied from interface: MetaObjectProtocol
      Retrieves a static MetaMethod for the given name and argument values, using the types of the arguments to establish the chosen MetaMethod
      Specified by:
      getStaticMetaMethod in interface MetaObjectProtocol
      Parameters:
      name - The name of the MetaMethod
      argTypes - The argument types
      Returns:
      A MetaMethod or null if it doesn't exist
      See Also:

    • getMetaMethod

      public MetaMethod getMetaMethod(String name, Object[] argTypes)
      Description copied from interface: MetaObjectProtocol
      Retrieves an instance MetaMethod for the given name and argument values, using the types of the argument values to establish the chosen MetaMethod
      Specified by:
      getMetaMethod in interface MetaObjectProtocol
      Parameters:
      name - The name of the MetaMethod
      argTypes - Array containing - 1) the argument values (using which their types are then inferred), or 2) the corresponding argument types
      Returns:
      A MetaMethod or null if it doesn't exist
      See Also:

    • getTheClass

      public Class getTheClass()
      Returns the class this metaclass represents.
      Specified by:
      getTheClass in interface MetaObjectProtocol
      Returns:
      The java.lang.Class instance

    • isGroovyObject

      public boolean isGroovyObject()
      Indicates if the represented class is an instance of the GroovyObject class.

    • getSuperClasses

      protected LinkedList<CachedClass> getSuperClasses()
      Returns the cached super-class chain used while building method and property indexes.
      Returns:
      the cached super classes in lookup order

    • isModified

      public boolean isModified()
      Returns whether this MetaClassImpl has been modified. Since MetaClassImpl is not designed for modification this method always returns false
      Specified by:
      isModified in interface MutableMetaClass
      Returns:
      false

    • addNewInstanceMethod

      public void addNewInstanceMethod(Method method)
      Adds an instance method to this metaclass.
      Specified by:
      addNewInstanceMethod in interface MutableMetaClass
      Parameters:
      method - The method to be added

    • addNewStaticMethod

      public void addNewStaticMethod(Method method)
      Adds a static method to this metaclass.
      Specified by:
      addNewStaticMethod in interface MutableMetaClass
      Parameters:
      method - The method to be added

    • invokeMethod

      public Object invokeMethod(Object object, String methodName, Object arguments)
      Invoke a method on the given object with the given arguments.
      Specified by:
      invokeMethod in interface MetaObjectProtocol
      Parameters:
      object - The object the method should be invoked on.
      methodName - The name of the method to invoke.
      arguments - The arguments to the invoked method as null, a Tuple, an array or a single argument of any type.
      Returns:
      The result of the method invocation.
      See Also:

    • invokeMissingMethod

      public Object invokeMissingMethod(Object instance, String methodName, Object[] arguments)
      Invoke a missing method on the given object with the given arguments.
      Specified by:
      invokeMissingMethod in interface MetaClass
      Parameters:
      instance - The object the method should be invoked on.
      methodName - The name of the method to invoke.
      arguments - The arguments to the invoked method.
      Returns:
      The result of the method invocation.
      See Also:

    • invokeMissingProperty

      public Object invokeMissingProperty(Object instance, String propertyName, Object optionalValue, boolean isGetter)
      Invoke a missing property on the given object with the given arguments.
      Specified by:
      invokeMissingProperty in interface MetaClass
      Parameters:
      instance - The object the method should be invoked on.
      propertyName - The name of the property to invoke.
      optionalValue - The (optional) new value for the property
      isGetter - Whether the method is a getter
      Returns:
      The result of the method invocation.

    • onSuperPropertyFoundInHierarchy

      protected void onSuperPropertyFoundInHierarchy(MetaBeanProperty property)
      Callback invoked when a super-class bean property is discovered during initialization.
      Parameters:
      property - the inherited property

    • onMixinMethodFound

      protected void onMixinMethodFound(MetaMethod method)
      Callback invoked when a mixin method is discovered during initialization.
      Parameters:
      method - the discovered mixin method

    • onSuperMethodFoundInHierarchy

      protected void onSuperMethodFoundInHierarchy(MetaMethod method)
      Callback invoked when a super-class method is discovered during initialization.
      Parameters:
      method - the inherited method

    • onInvokeMethodFoundInHierarchy

      protected void onInvokeMethodFoundInHierarchy(MetaMethod method)
      Callback invoked when an invokeMethod implementation is discovered.
      Parameters:
      method - the discovered handler

    • onSetPropertyFoundInHierarchy

      protected void onSetPropertyFoundInHierarchy(MetaMethod method)
      Callback invoked when a setProperty implementation is discovered.
      Parameters:
      method - the discovered handler

    • onGetPropertyFoundInHierarchy

      protected void onGetPropertyFoundInHierarchy(MetaMethod method)
      Callback invoked when a getProperty implementation is discovered.
      Parameters:
      method - the discovered handler

    • invokeStaticMissingProperty

      protected Object invokeStaticMissingProperty(Object instance, String propertyName, Object optionalValue, boolean isGetter)
      Hook to deal with the case of missing property for static properties. The method attempts to look up "$static_propertyMissing" handlers and invoke them otherwise throws a MissingPropertyException.
      Parameters:
      instance - the class instance
      propertyName - the name of the property
      optionalValue - the value in the case of a setter
      isGetter - true for property read, false for property write
      Returns:
      The value in the case of a getter or null in the case of a setter.
      Throws:
      MissingPropertyException

    • invokeMethod

      public Object invokeMethod(Object object, String methodName, Object[] arguments)
      Invokes a method on the given receiver for the specified arguments. The MetaClass will attempt to establish the method to invoke based on the name and arguments provided.
      Specified by:
      invokeMethod in interface MetaObjectProtocol
      Parameters:
      object - The object which the method was invoked on
      methodName - The name of the method
      arguments - The arguments to the method
      Returns:
      The return value of the method
      See Also:

    • invokeMethod

      public Object invokeMethod(Class sender, Object object, String methodName, Object[] originalArguments, boolean isCallToSuper, boolean fromInsideClass)
      Invokes a method on the given receiver for the specified arguments. The sender is the class that invoked the method on the object. The MetaClass will attempt to establish the method to invoke based on the name and arguments provided.

      The isCallToSuper and fromInsideClass help the Groovy runtime perform optimisations on the call to go directly to the super class if necessary

      Specified by:
      invokeMethod in interface MetaClass
      Parameters:
      sender - The java.lang.Class instance that invoked the method
      object - The object which the method was invoked on
      methodName - The name of the method
      originalArguments - The arguments to the method
      isCallToSuper - Whether the method is a call to a super class method
      fromInsideClass - Whether the call was invoked from the inside or the outside of the class
      Returns:
      The return value of the method.
      See Also:

    • getNonClosureOuter

      protected static Class<?> getNonClosureOuter(Class<?> c)
      Since:
      6.0.0

    • createTransformMetaMethod

      protected MetaMethod createTransformMetaMethod(MetaMethod method)
      Wraps a meta method so single-list arguments are expanded before invocation.
      Parameters:
      method - the method to wrap
      Returns:
      the transforming method, or null if the input method is null

    • getMethodWithCaching

      public MetaMethod getMethodWithCaching(Class sender, String methodName, Object[] arguments, boolean isCallToSuper)
      Resolves a method and caches the selection for the supplied argument types.
      Parameters:
      sender - the calling class
      methodName - the method name
      arguments - the runtime arguments
      isCallToSuper - whether the dispatch originated from super
      Returns:
      the selected meta method, or null if none matches

    • retrieveConstructor

      public Constructor retrieveConstructor(Class[] arguments)
      Resolves a constructor by parameter types.
      Parameters:
      arguments - the constructor parameter types
      Returns:
      the matching constructor, or null if none matches

    • getMethodWithoutCaching

      public MetaMethod getMethodWithoutCaching(Class sender, String methodName, Class[] arguments, boolean isCallToSuper)
      Resolves a method without populating the method cache.
      Parameters:
      sender - the calling class
      methodName - the method name
      arguments - the parameter types
      isCallToSuper - whether the dispatch originated from super
      Returns:
      the selected meta method, or null if none matches

    • retrieveStaticMethod

      public MetaMethod retrieveStaticMethod(String methodName, Object[] arguments)
      Resolves a static method and caches the selection when possible.
      Parameters:
      methodName - the method name
      arguments - the runtime arguments
      Returns:
      the selected static meta method, or null if none matches

    • invokeStaticMethod

      public Object invokeStaticMethod(Object object, String methodName, Object[] arguments)
      Invokes a static method on the given Object with the given name and arguments.

      The Object can either be an instance of the class that this MetaObjectProtocol instance applies to or the java.lang.Class instance itself. If a method cannot be invoked a MissingMethodException is will be thrown

      Specified by:
      invokeStaticMethod in interface MetaObjectProtocol
      Parameters:
      object - An instance of the class returned by the getTheClass() method or the class itself
      methodName - The name of the method
      arguments - The arguments to the method
      Returns:
      The return value of the method which is null if the return type is void
      See Also:

    • invokeConstructor

      public Object invokeConstructor(Object[] arguments)
      Invokes a constructor for the given arguments. The MetaClass will attempt to pick the best argument which matches the types of the objects passed within the arguments array
      Specified by:
      invokeConstructor in interface MetaObjectProtocol
      Parameters:
      arguments - The arguments to the constructor
      Returns:
      An instance of the java.lang.Class that this MetaObjectProtocol object applies to

    • selectConstructorAndTransformArguments

      public int selectConstructorAndTransformArguments(int numberOfConstructors, Object[] arguments)
      Internal method to support Groovy runtime. Not for client usage.
      Specified by:
      selectConstructorAndTransformArguments in interface MetaClass
      Parameters:
      numberOfConstructors - The number of constructors
      arguments - The arguments
      Returns:
      selected index

    • checkInitalised

      protected void checkInitalised()
      checks if the initialisation of the class id complete. This method should be called as a form of assert, it is no way to test if there is still initialisation work to be done. Such logic must be implemented in a different way.
      Throws:
      IllegalStateException - if the initialisation is incomplete yet

    • retrieveConstructor

      public MetaMethod retrieveConstructor(Object[] arguments)
      This is a helper method which is used only by indy. It is for internal use.
      Since:
      2.1.0

    • setProperties

      public void setProperties(Object bean, Map map)
      Sets a number of bean properties from the given Map where the keys are the String names of properties and the values are the values of the properties to set

    • getProperty

      public Object getProperty(Class sender, Object object, String name, boolean useSuper, boolean fromInsideClass)

      Retrieves a property on the given receiver for the specified arguments. The sender is the class that is requesting the property from the object. The MetaClass will attempt to establish the method to invoke based on the name and arguments provided.

      The isCallToSuper and fromInsideClass help the Groovy runtime perform optimisations on the call to go directly to the super class if necessary

      Specified by:
      getProperty in interface MetaClass
      Parameters:
      sender - The java.lang.Class instance that requested the property
      object - The Object which the property is being retrieved from
      name - The name of the property
      useSuper - Whether the call is to a super class property
      fromInsideClass - ??
      Returns:
      The property's value.

    • getEffectiveGetMetaProperty

      public MetaProperty getEffectiveGetMetaProperty(Class sender, Object object, String name, boolean useSuper)
      Returns the effective readable meta property for a property access.
      Parameters:
      sender - the calling class
      object - the receiver object or class
      name - the property name
      useSuper - whether the lookup should start at the super class
      Returns:
      the effective readable meta property

    • getProperties

      public List<MetaProperty> getProperties()
      Returns the available properties for this type.
      Specified by:
      getProperties in interface MetaClass
      Specified by:
      getProperties in interface MetaObjectProtocol
      Returns:
      a list of MetaProperty objects
      See Also:

    • applyPropertyDescriptors

      protected void applyPropertyDescriptors(PropertyDescriptor[] propertyDescriptors)
      Turns JavaBeans property descriptors into Groovy meta properties.
      Parameters:
      propertyDescriptors - the descriptors to apply

    • addMetaBeanProperty

      public void addMetaBeanProperty(MetaBeanProperty mp)
      Adds a new MetaBeanProperty to this MetaClass
      Specified by:
      addMetaBeanProperty in interface MutableMetaClass
      Parameters:
      mp - The MetaBeanProperty

    • setProperty

      public void setProperty(Class sender, Object object, String name, Object newValue, boolean useSuper, boolean fromInsideClass)
      Writes a property on the given receiver for the specified arguments. The sender is the class that is requesting the property from the object. The MetaClass will attempt to establish the method to invoke based on the name and arguments provided.

      The useSuper and fromInsideClass help the runtime perform optimisations on the call to go directly to the super class if necessary

      Specified by:
      setProperty in interface MetaClass
      Parameters:
      sender - The java.lang.Class instance that is mutating the property
      object - The Object which the property is being set on
      name - The name of the property
      newValue - The new value of the property to set
      useSuper - Whether the call is to a super class property
      fromInsideClass - Whether the call was invoked from the inside or the outside of the class.

    • getAttribute

      public Object getAttribute(Class sender, Object object, String attribute, boolean useSuper)
      Retrieves the value of an attribute (field). This method is to support the Groovy runtime and not for general client API usage.
      Specified by:
      getAttribute in interface MetaClass
      Parameters:
      sender - The class of the object that requested the attribute
      object - The instance
      attribute - The name of the attribute
      useSuper - Whether to look-up on the super class or not
      Returns:
      The attribute value

    • getAttribute

      public Object getAttribute(Class sender, Object object, String attribute, boolean useSuper, boolean fromInsideClass)
      Retrieves the value of an attribute (field). This method is to support the Groovy runtime and not for general client API usage.
      Parameters:
      sender - The class of the object that requested the attribute
      object - The instance the attribute is to be retrieved from
      attribute - The name of the attribute
      useSuper - Whether to look-up on the super class or not
      fromInsideClass - Whether the call was invoked from the inside or the outside of the class.
      Returns:
      The attribute value

    • setAttribute

      public void setAttribute(Class sender, Object object, String attribute, Object newValue, boolean useSuper, boolean fromInsideClass)

      Sets an attribute on the given receiver for the specified arguments. The sender is the class that is setting the attribute from the object. The MetaClass will attempt to establish the method to invoke based on the name and arguments provided.

      The isCallToSuper and fromInsideClass help the Groovy runtime perform optimisations on the call to go directly to the super class if necessary

      Specified by:
      setAttribute in interface MetaClass
      Parameters:
      sender - The java.lang.Class instance that is mutating the property
      object - The Object which the property is being set on
      attribute - The name of the attribute,
      newValue - The new value of the attribute to set
      useSuper - Whether the call is to a super class property
      fromInsideClass - Whether the call was invoked from the inside or the outside of the class

    • getClassNode

      public ClassNode getClassNode()
      Obtains a reference to the original AST for the MetaClass if it is available at runtime
      Specified by:
      getClassNode in interface MetaClass
      Returns:
      The original AST or null if it cannot be returned

    • toString

      public String toString()
      Returns a string representation of this metaclass
      Overrides:
      toString in class Object

    • addMetaMethod

      public void addMetaMethod(MetaMethod method)
      Adds a MetaMethod to this class. WARNING: this method will not do the necessary steps for multimethod logic and using this method doesn't mean, that a method added here is replacing another method from a parent class completely. These steps are usually done by initialize, which means if you need these steps, you have to add the method before running initialize the first time.
      Specified by:
      addMetaMethod in interface MutableMetaClass
      Parameters:
      method - The MetaMethod to add
      See Also:

    • addMetaMethodToIndex

      protected void addMetaMethodToIndex(MetaMethod method, Map<String,MetaMethodIndex.Cache> cacheIndex)
      Adds a meta method to the supplied method index after standard-hook bookkeeping.
      Parameters:
      method - the method to index
      cacheIndex - the target index bucket

    • checkIfGroovyObjectMethod

      protected final void checkIfGroovyObjectMethod(MetaMethod metaMethod)
      Checks if the metaMethod is getProperty, setProperty, or invokeMethod.
      See Also:

    • isInitialized

      protected boolean isInitialized()
      Indicates whether this meta class finished initialization.
      Returns:
      true once initialization completed

    • setInitialized

      protected void setInitialized(boolean initialized)
      Updates the initialization flag for this meta class.
      Parameters:
      initialized - the new initialization state

    • chooseMethod

      protected Object chooseMethod(String methodName, Object methodOrList, Class[] arguments) throws MethodSelectionException
      Chooses the correct method to use from a list of methods which match by name.
      Parameters:
      methodOrList - the possible methods to choose from
      arguments - the arguments
      Throws:
      MethodSelectionException

    • doChooseMostSpecificParams

      protected static Object doChooseMostSpecificParams(String theClassName, String name, List matchingMethods, Class[] arguments, boolean checkParameterCompatibility)
      Chooses the most specific overload among matching parameter type candidates.
      Parameters:
      theClassName - the receiver class name used in diagnostics
      name - the method name
      matchingMethods - the candidate methods
      arguments - the runtime argument types
      checkParameterCompatibility - whether candidates should be filtered for compatibility first
      Returns:
      the selected candidate, or null if none matches

    • createErrorMessageForAmbiguity

      protected static String createErrorMessageForAmbiguity(String theClassName, String name, Class[] arguments, LinkedList matches)
      Creates the diagnostic message for an ambiguous overload selection.
      Parameters:
      theClassName - the receiver class name
      name - the method name
      arguments - the runtime argument types
      matches - the ambiguous candidates
      Returns:
      the ambiguity message

    • handleMatches

      protected static long handleMatches(long matchesDistance, LinkedList matches, Object method, long dist)
      Updates the current best-match set using the supplied distance metric.
      Parameters:
      matchesDistance - the best distance seen so far
      matches - the current best candidates
      method - the candidate method
      dist - the candidate distance
      Returns:
      the updated best distance

    • initialize

      public void initialize()
      Complete the initialisation process. After this method is called no methods should be added to the metaclass. Invocation of methods or access to fields/properties is forbidden unless this method is called. This method should contain any initialisation code, taking a longer time to complete. An example is the creation of the Reflector. It is suggested to synchronize this method.
      Specified by:
      initialize in interface MetaClass

    • reinitialize

      protected void reinitialize()
      Rebuilds method, property and call-site state for this meta class.

    • getMethods

      public List<MetaMethod> getMethods()
      Retrieves the list of MetaMethods held by the class. This list does not include MetaMethods added by groovy.lang.ExpandoMetaClass.
      Specified by:
      getMethods in interface MetaClass
      Specified by:
      getMethods in interface MetaObjectProtocol
      Returns:
      A list of MetaMethods
      See Also:

    • getMetaMethods

      public List<MetaMethod> getMetaMethods()
      Retrieves the list of MetaMethods held by this class. This list includes MetaMethods added by groovy.lang.ExpandoMetaClass.
      Specified by:
      getMetaMethods in interface MetaClass
      Returns:
      A list of MetaMethods

    • dropStaticMethodCache

      protected void dropStaticMethodCache(String name)
      Clears cached static method selections for the supplied method name.
      Parameters:
      name - the method name whose cache entries should be cleared

    • dropMethodCache

      protected void dropMethodCache(String name)
      Clears cached instance method selections for the supplied method name.
      Parameters:
      name - the method name whose cache entries should be cleared

    • createPojoCallSite

      public CallSite createPojoCallSite(CallSite site, Object receiver, Object[] args)
      Create a CallSite

    • createStaticSite

      public CallSite createStaticSite(CallSite site, Object[] args)
      Create a CallSite

    • createPogoCallSite

      public CallSite createPogoCallSite(CallSite site, Object[] args)
      Create a CallSite

    • createPogoCallCurrentSite

      public CallSite createPogoCallCurrentSite(CallSite site, Class sender, Object[] args)
      Create a CallSite

    • createConstructorSite

      public CallSite createConstructorSite(CallSite site, Object[] args)
      Create a CallSite

    • getClassInfo

      public ClassInfo getClassInfo()
      Returns the ClassInfo for the contained Class
      Returns:
      The ClassInfo for the contained class.

    • getVersion

      public int getVersion()
      Returns version of the contained Class
      Returns:
      The version of the contained class.

    • incVersion

      public void incVersion()
      Increments version of the contained Class

    • getAdditionalMetaMethods

      public MetaMethod[] getAdditionalMetaMethods()
      Retrieves a list of additional MetaMethods held by this class
      Returns:
      A list of MetaMethods

    • findPropertyInClassHierarchy

      protected MetaBeanProperty findPropertyInClassHierarchy(String propertyName, CachedClass theClass)
      Searches the class hierarchy for a mutable meta-class bean property.
      Parameters:
      propertyName - the property name
      theClass - the class to start searching from
      Returns:
      the matching bean property, or null if none is found

    • findMixinMethod

      protected MetaMethod findMixinMethod(String methodName, Class[] arguments)
      Searches for a matching mixin method.
      Parameters:
      methodName - the method name
      arguments - the parameter types
      Returns:
      the matching mixin method, or null if none is found

    • findMethodInClassHierarchy

      protected static MetaMethod findMethodInClassHierarchy(Class instanceKlazz, String methodName, Class[] arguments, MetaClass metaClass)
      Searches a meta-class hierarchy for the most specific visible method.
      Parameters:
      instanceKlazz - the runtime receiver class
      methodName - the method name
      arguments - the parameter types
      metaClass - the starting meta class
      Returns:
      the selected method, or null if none matches

    • findOwnMethod

      protected static MetaMethod findOwnMethod(Class instanceKlazz, String methodName, Class[] arguments, MetaClass metaClass, MetaMethod method)
      Chooses the best method declared directly on the supplied meta class.
      Parameters:
      instanceKlazz - the runtime receiver class
      methodName - the method name
      arguments - the parameter types
      metaClass - the meta class being inspected
      method - the current best method candidate
      Returns:
      the updated best method candidate

    • getSubclassMetaMethods

      protected Object getSubclassMetaMethods(String methodName)
      Returns subclass-scoped meta methods contributed by specialized meta classes.
      Parameters:
      methodName - the method name
      Returns:
      subclass methods for the name, or null if none are registered

    • getProperty

      public Object getProperty(Object object, String property)

      Retrieves a property on the given object for the specified arguments.

      Specified by:
      getProperty in interface MetaObjectProtocol
      Parameters:
      object - The Object which the property is being retrieved from
      property - The name of the property
      Returns:
      The properties value
      See Also:

    • setProperty

      public void setProperty(Object object, String property, Object newValue)

      Sets a property on the given object for the specified arguments.

      Specified by:
      setProperty in interface MetaObjectProtocol
      Parameters:
      object - The Object which the property is being retrieved from
      property - The name of the property
      newValue - The new value
      See Also:

    • getAttribute

      public Object getAttribute(Object object, String attribute)
      Retrieves the value of an attribute (field). This method is to support the Groovy runtime and not for general client API usage.
      Specified by:
      getAttribute in interface MetaObjectProtocol
      Parameters:
      object - The object to get the attribute from
      attribute - The name of the attribute
      Returns:
      The attribute value
      See Also:

    • setAttribute

      public void setAttribute(Object object, String attribute, Object newValue)
      Sets the value of an attribute (field). This method is to support the Groovy runtime and not for general client API usage.
      Specified by:
      setAttribute in interface MetaObjectProtocol
      Parameters:
      object - The object to get the attribute from
      attribute - The name of the attribute
      newValue - The new value of the attribute
      See Also:

    • pickMethod

      public MetaMethod pickMethod(String methodName, Class[] arguments)
      Selects a method by name and argument classes. This method does not search for an exact match, it searches for a compatible method. For this the method selection mechanism is used as provided by the implementation of this MetaClass. pickMethod may or may not be used during the method selection process when invoking a method. There is no warranty for that.
      Specified by:
      pickMethod in interface MetaClass
      Parameters:
      methodName - the name of the method to pick
      arguments - the method arguments
      Returns:
      a matching MetaMethod or null
      Throws:
      GroovyRuntimeException - if there is more than one matching method

    • hasCustomInvokeMethod

      public boolean hasCustomInvokeMethod()
      indicates is the metaclass method invocation for non-static methods is done through a custom invoker object.
      Returns:
      true - if the method invocation is not done by the metaclass itself

    • hasCustomStaticInvokeMethod

      public boolean hasCustomStaticInvokeMethod()
      indicates is the metaclass method invocation for static methods is done through a custom invoker object.
      Returns:
      true - if the method invocation is not done by the metaclass itself

    • clearInvocationCaches

      protected void clearInvocationCaches()
      remove all method call cache entries. This should be done if a method is added during runtime, but not by using a category.

    • isPermissivePropertyAccess

      public boolean isPermissivePropertyAccess()
      Indicates whether permissive property access semantics are enabled.
      Returns:
      true if missing getters may still resolve fields or map entries

    • setPermissivePropertyAccess

      public void setPermissivePropertyAccess(boolean permissivePropertyAccess)
      Enables or disables permissive property access semantics.
      Parameters:
      permissivePropertyAccess - the new permissive-property-access flag