Package org.codehaus.groovy.runtime
Class MetaClassHelper
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- org.codehaus.groovy.runtime.MetaClassHelper
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public class MetaClassHelper extends java.lang.Object
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Field Summary
Fields Modifier and Type Field Description static java.lang.Object[]ARRAY_WITH_NULLstatic java.lang.Object[]EMPTY_ARRAYstatic java.lang.Class[]EMPTY_CLASS_ARRAYstatic java.lang.Class[]EMPTY_TYPE_ARRAYprotected static java.util.logging.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(java.lang.Class at, java.lang.reflect.Constructor constructor)static java.lang.ObjectasPrimitiveArray(java.util.List list, java.lang.Class parameterType)static java.lang.Object[]asWrapperArray(java.lang.Object parameters, java.lang.Class componentType)static longcalculateParameterDistance(java.lang.Class[] arguments, ParameterTypes pt)static java.lang.Stringcapitalize(java.lang.String property)This is the complement to the java.beans.Introspector.decapitalize(String) method.static java.lang.Class[]castArgumentsToClassArray(java.lang.Object[] argTypes)static java.lang.ObjectchooseEmptyMethodParams(FastArray methods)static java.lang.ObjectchooseMostGeneralMethodWith1NullParam(FastArray methods)Deprecated.static booleancontainsMatchingMethod(java.util.List list, MetaMethod method)static java.lang.StringconvertPropertyName(java.lang.String prop)Converts a String into a standard property name.static java.lang.Class[]convertToTypeArray(java.lang.Object[] args)param instance array to the type arraystatic GroovyRuntimeExceptioncreateExceptionText(java.lang.String init, MetaMethod method, java.lang.Object object, java.lang.Object[] args, java.lang.Throwable reason, boolean setReason)static voiddoSetMetaClass(java.lang.Object self, MetaClass mc)Sets the meta class for an object, by delegating to the appropriateDefaultGroovyMethodshelper method.protected static java.lang.StringgetClassName(java.lang.Object object)static ClosuregetMethodPointer(java.lang.Object object, java.lang.String methodName)Returns a callable object for the given method name on the object.static booleanisAssignableFrom(java.lang.Class classToTransformTo, java.lang.Class classToTransformFrom)static booleanisGenericSetMethod(MetaMethod method)protected static booleanisSuperclass(java.lang.Class clazz, java.lang.Class superclass)static voidlogMethodCall(java.lang.Object object, java.lang.String methodName, java.lang.Object[] arguments)static java.lang.ObjectmakeArray(java.lang.Object obj, java.lang.Class secondary, int length)static java.lang.ObjectmakeCommonArray(java.lang.Object[] arguments, int offset, java.lang.Class fallback)protected static java.lang.StringnormalizedValue(java.lang.Object argument)static booleanparametersAreCompatible(java.lang.Class[] arguments, java.lang.Class[] parameters)static booleansameClass(java.lang.Class[] params, java.lang.Object arg)static booleansameClasses(java.lang.Class[] params)static booleansameClasses(java.lang.Class[] params, java.lang.Object arg1)static booleansameClasses(java.lang.Class[] params, java.lang.Object[] arguments)static booleansameClasses(java.lang.Class[] params, java.lang.Object[] arguments, boolean weakNullCheck)static booleansameClasses(java.lang.Class[] params, java.lang.Object arg1, java.lang.Object arg2)static booleansameClasses(java.lang.Class[] params, java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3)static booleansameClasses(java.lang.Class[] params, java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3, java.lang.Object arg4)protected static java.lang.StringshortName(java.lang.Object object)static voidunwrap(java.lang.Object[] arguments)static java.lang.Class[]wrap(java.lang.Class[] classes)
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Field Detail
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EMPTY_ARRAY
public static final java.lang.Object[] EMPTY_ARRAY
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EMPTY_TYPE_ARRAY
public static final java.lang.Class[] EMPTY_TYPE_ARRAY
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ARRAY_WITH_NULL
public static final java.lang.Object[] ARRAY_WITH_NULL
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LOG
protected static final java.util.logging.Logger LOG
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EMPTY_CLASS_ARRAY
public static final java.lang.Class[] EMPTY_CLASS_ARRAY
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Method Detail
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accessibleToConstructor
public static boolean accessibleToConstructor(java.lang.Class at, java.lang.reflect.Constructor constructor)
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asWrapperArray
public static java.lang.Object[] asWrapperArray(java.lang.Object parameters, java.lang.Class componentType)
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asPrimitiveArray
public static java.lang.Object asPrimitiveArray(java.util.List list, java.lang.Class parameterType)- Parameters:
list- the original listparameterType- the resulting array type- Returns:
- the constructed array
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calculateParameterDistance
public static long calculateParameterDistance(java.lang.Class[] arguments, ParameterTypes pt)
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capitalize
public static java.lang.String capitalize(java.lang.String property)
This is the complement to the java.beans.Introspector.decapitalize(String) method. We handle names that begin with an initial lowerCase followed by upperCase specially (which is to make no change). See GROOVY-3211.- Parameters:
property- the property name to capitalize- Returns:
- the name capitalized, except when we don't
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chooseEmptyMethodParams
public static java.lang.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 java.lang.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(java.util.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 java.lang.Class[] convertToTypeArray(java.lang.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 java.lang.Object makeCommonArray(java.lang.Object[] arguments, int offset, java.lang.Class fallback)
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makeArray
public static java.lang.Object makeArray(java.lang.Object obj, java.lang.Class secondary, int length)
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createExceptionText
public static GroovyRuntimeException createExceptionText(java.lang.String init, MetaMethod method, java.lang.Object object, java.lang.Object[] args, java.lang.Throwable reason, boolean setReason)
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getClassName
protected static java.lang.String getClassName(java.lang.Object object)
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getMethodPointer
public static Closure getMethodPointer(java.lang.Object object, java.lang.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(java.lang.Class classToTransformTo, java.lang.Class classToTransformFrom)
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isGenericSetMethod
public static boolean isGenericSetMethod(MetaMethod method)
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isSuperclass
protected static boolean isSuperclass(java.lang.Class clazz, java.lang.Class superclass)
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parametersAreCompatible
public static boolean parametersAreCompatible(java.lang.Class[] arguments, java.lang.Class[] parameters)
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logMethodCall
public static void logMethodCall(java.lang.Object object, java.lang.String methodName, java.lang.Object[] arguments)
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normalizedValue
protected static java.lang.String normalizedValue(java.lang.Object argument)
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shortName
protected static java.lang.String shortName(java.lang.Object object)
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wrap
public static java.lang.Class[] wrap(java.lang.Class[] classes)
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sameClasses
public static boolean sameClasses(java.lang.Class[] params, java.lang.Object[] arguments, boolean weakNullCheck)
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sameClasses
public static boolean sameClasses(java.lang.Class[] params, java.lang.Object[] arguments)
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sameClasses
public static boolean sameClasses(java.lang.Class[] params)
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sameClasses
public static boolean sameClasses(java.lang.Class[] params, java.lang.Object arg1)
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sameClasses
public static boolean sameClasses(java.lang.Class[] params, java.lang.Object arg1, java.lang.Object arg2)
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sameClasses
public static boolean sameClasses(java.lang.Class[] params, java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3)
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sameClasses
public static boolean sameClasses(java.lang.Class[] params, java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3, java.lang.Object arg4)
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sameClass
public static boolean sameClass(java.lang.Class[] params, java.lang.Object arg)
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castArgumentsToClassArray
public static java.lang.Class[] castArgumentsToClassArray(java.lang.Object[] argTypes)
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unwrap
public static void unwrap(java.lang.Object[] arguments)
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doSetMetaClass
public static void doSetMetaClass(java.lang.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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convertPropertyName
public static java.lang.String convertPropertyName(java.lang.String prop)
Converts a String into a standard property name.- Parameters:
prop- the original name- Returns:
- the converted name
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