Package org.codehaus.groovy.runtime
Class MetaClassHelper
- java.lang.Object
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- org.codehaus.groovy.runtime.MetaClassHelper
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public class MetaClassHelper extends Object
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Field Summary
Fields Modifier and Type Field Description static Object[]ARRAY_WITH_NULLstatic Object[]EMPTY_ARRAYstatic Class[]EMPTY_CLASS_ARRAYstatic Class[]EMPTY_TYPE_ARRAYprotected static LoggerLOG
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Constructor Summary
Constructors Constructor Description MetaClassHelper()
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Method Summary
All Methods Static Methods Concrete Methods Deprecated Methods Modifier and Type Method Description static booleanaccessibleToConstructor(Class at, Constructor constructor)static ObjectasPrimitiveArray(List list, Class parameterType)static Object[]asWrapperArray(Object parameters, Class componentType)static longcalculateParameterDistance(Class[] arguments, ParameterTypes pt)static Stringcapitalize(String property)Deprecated.Use BeanUtils.capitalize insteadstatic Class[]castArgumentsToClassArray(Object[] argTypes)static ObjectchooseEmptyMethodParams(FastArray methods)static ObjectchooseMostGeneralMethodWith1NullParam(FastArray methods)Deprecated.static booleancontainsMatchingMethod(List list, MetaMethod method)static StringconvertPropertyName(String prop)Converts a String into a standard property name.static Class[]convertToTypeArray(Object[] args)param instance array to the type arraystatic GroovyRuntimeExceptioncreateExceptionText(String init, MetaMethod method, Object object, Object[] args, Throwable reason, boolean setReason)static voiddoSetMetaClass(Object self, MetaClass mc)Sets the meta class for an object, by delegating to the appropriateDefaultGroovyMethodshelper method.protected static StringgetClassName(Object object)static ClosuregetMethodPointer(Object object, String methodName)Returns a callable object for the given method name on the object.static booleanisAssignableFrom(Class classToTransformTo, Class classToTransformFrom)static booleanisGenericSetMethod(MetaMethod method)protected static booleanisSuperclass(Class clazz, Class superclass)static voidlogMethodCall(Object object, String methodName, Object[] arguments)static ObjectmakeArray(Object obj, Class secondary, int length)static ObjectmakeCommonArray(Object[] arguments, int offset, Class fallback)protected static StringnormalizedValue(Object argument)static booleanparametersAreCompatible(Class[] arguments, Class[] parameters)static booleansameClass(Class[] params, Object arg)static booleansameClasses(Class[] params)static booleansameClasses(Class[] params, Object arg1)static booleansameClasses(Class[] params, Object[] arguments)static booleansameClasses(Class[] params, Object[] arguments, boolean weakNullCheck)static booleansameClasses(Class[] params, Object arg1, Object arg2)static booleansameClasses(Class[] params, Object arg1, Object arg2, Object arg3)static booleansameClasses(Class[] params, Object arg1, Object arg2, Object arg3, Object arg4)protected static StringshortName(Object object)static voidunwrap(Object[] arguments)static Class[]wrap(Class[] classes)
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Method Detail
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accessibleToConstructor
public static boolean accessibleToConstructor(Class at, Constructor constructor)
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asPrimitiveArray
public static Object asPrimitiveArray(List list, Class parameterType)
- Parameters:
list- the original listparameterType- the resulting array type- Returns:
- the constructed array
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calculateParameterDistance
public static long calculateParameterDistance(Class[] arguments, ParameterTypes pt)
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capitalize
@Deprecated public static String capitalize(String property)
Deprecated.Use BeanUtils.capitalize instead
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chooseEmptyMethodParams
public static Object chooseEmptyMethodParams(FastArray methods)
- Parameters:
methods- the methods to choose from- Returns:
- the method with 1 parameter which takes the most general type of object (e.g. Object)
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chooseMostGeneralMethodWith1NullParam
@Deprecated public static Object chooseMostGeneralMethodWith1NullParam(FastArray methods)
Deprecated.Warning: this method does not choose properly if multiple methods with the same distance are encountered- Parameters:
methods- the methods to choose from- Returns:
- the method with 1 parameter which takes the most general type of object (e.g. Object) ignoring primitive types
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containsMatchingMethod
public static boolean containsMatchingMethod(List list, MetaMethod method)
- Parameters:
list- a list of MetaMethodsmethod- the MetaMethod of interest- Returns:
- true if a method of the same matching prototype was found in the list
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convertToTypeArray
public static Class[] convertToTypeArray(Object[] args)
param instance array to the type array- Parameters:
args- the arguments- Returns:
- the types of the arguments
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makeCommonArray
public static Object makeCommonArray(Object[] arguments, int offset, Class fallback)
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createExceptionText
public static GroovyRuntimeException createExceptionText(String init, MetaMethod method, Object object, Object[] args, Throwable reason, boolean setReason)
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getMethodPointer
public static Closure getMethodPointer(Object object, String methodName)
Returns a callable object for the given method name on the object. The object acts like a Closure in that it can be called, like a closure and passed around - though really its a method pointer, not a closure per se.- Parameters:
object- the object containing the methodmethodName- the method of interest- Returns:
- the resulting closure-like method pointer
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isAssignableFrom
public static boolean isAssignableFrom(Class classToTransformTo, Class classToTransformFrom)
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isGenericSetMethod
public static boolean isGenericSetMethod(MetaMethod method)
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parametersAreCompatible
public static boolean parametersAreCompatible(Class[] arguments, Class[] parameters)
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logMethodCall
public static void logMethodCall(Object object, String methodName, Object[] arguments)
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sameClasses
public static boolean sameClasses(Class[] params, Object[] arguments, boolean weakNullCheck)
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sameClasses
public static boolean sameClasses(Class[] params)
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sameClasses
public static boolean sameClasses(Class[] params, Object arg1, Object arg2, Object arg3)
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sameClasses
public static boolean sameClasses(Class[] params, Object arg1, Object arg2, Object arg3, Object arg4)
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unwrap
public static void unwrap(Object[] arguments)
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doSetMetaClass
public static void doSetMetaClass(Object self, MetaClass mc)
Sets the meta class for an object, by delegating to the appropriateDefaultGroovyMethodshelper method. This method was introduced as a breaking change in 2.0 to solve rare cases of stack overflow. See GROOVY-5285. The method is named doSetMetaClass in order to prevent misusages. Do not use this method directly unless you know what you do.- Parameters:
self- the object for which to set the meta classmc- the metaclass
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