com.espertech.esper.util

Class JavaClassHelper

java.lang.Object

com.espertech.esper.util.JavaClassHelper

public class JavaClassHelper
extends java.lang.Object

Helper for questions about Java classes such as

what is the boxed type for a primitive type

is this a numeric type.

Constructor Summary

Constructors

Constructor and Description
JavaClassHelper()

Method Summary

Modifier and Type	Method and Description
static boolean	canCoerce(java.lang.Class numberClassToBeCoerced, java.lang.Class numberClassToCoerceTo) Determines if a number can be coerced upwards to another number class without loss.
static java.lang.Number	coerceBoxed(java.lang.Number numToCoerce, java.lang.Class resultBoxedType) Coerce the given number to the given type, assuming the type is a Boxed type.
static CodegenExpression	coerceNumberBoxedToBoxedCodegen(CodegenExpression exprReturningBoxed, java.lang.Class fromTypeBoxed, java.lang.Class targetTypeBoxed)
static CodegenExpression	coerceNumberToBoxedCodegen(CodegenExpression expr, java.lang.Class fromType, java.lang.Class targetTypeBoxed)
static java.util.Set<java.lang.reflect.Field>	findAnnotatedFields(java.lang.Class targetClass, java.lang.Class<? extends java.lang.annotation.Annotation> annotation)
static java.util.Set<java.lang.reflect.Method>	findAnnotatedMethods(java.lang.Class targetClass, java.lang.Class<? extends java.lang.annotation.Annotation> annotation)
static java.lang.reflect.Method	findRequiredMethod(java.lang.Class clazz, java.lang.String methodName)
static java.lang.Object	getAnnotationHook(java.lang.annotation.Annotation[] annotations, HookType hookType, java.lang.Class interfaceExpected, EngineImportService engineImportService) Returns an instance of a hook as specified by an annotation.
static java.util.List<java.lang.annotation.Annotation>	getAnnotations(java.lang.Class<? extends java.lang.annotation.Annotation> annotationClass, java.lang.annotation.Annotation[] annotations)
static java.lang.Class	getArithmaticCoercionType(java.lang.Class typeOne, java.lang.Class typeTwo) Returns the coercion type for the 2 numeric types for use in arithmatic.
static java.lang.Class	getArrayType(java.lang.Class resultType)
static java.lang.String	getBoxedClassName(java.lang.String className) Returns for the class name given the class name of the boxed (wrapped) type if the class name is one of the Java primitive types.
static java.lang.Class	getBoxedType(java.lang.Class clazz) Returns the boxed class for the given class, or the class itself if already boxed or not a primitive type.
static java.lang.Class	getClassForName(java.lang.String className, ClassForNameProvider classForNameProvider) Returns the class given a fully-qualified class name.
static java.lang.Class	getClassForSimpleName(java.lang.String className, ClassForNameProvider classForNameProvider) Returns the boxed class for the given classname, recognizing all primitive and abbreviations, uppercase and lowercase.
static java.lang.Class	getClassInClasspath(java.lang.String classname, ClassForNameProvider classForNameProvider)
static java.lang.String	getClassLoaderId(java.lang.ClassLoader classLoader)
static java.lang.String	getClassNameFullyQualPretty(java.lang.Class clazz)
static java.lang.String	getClassNameFullyQualPrettyWithClassloader(java.lang.Class clazz)
static java.util.Map<java.lang.String,java.lang.Object>	getClassObjectFromPropertyTypeNames(java.util.Properties properties, ClassForNameProvider classForNameProvider)
static java.lang.Class	getCommonCoercionType(java.lang.Class[] types) Determines a common denominator type to which one or more types can be casted or coerced.
static java.lang.Class	getCompareToCoercionType(java.lang.Class typeOne, java.lang.Class typeTwo) Returns for 2 classes to be compared via relational operator the Class type of common comparison.
static java.lang.Class	getComponentTypeOutermost(java.lang.Class clazz)
static java.lang.Class	getGenericFieldType(java.lang.reflect.Field field, boolean isAllowNull) Returns the generic type parameter of a return value by a field.
static java.lang.Class	getGenericFieldTypeMap(java.lang.reflect.Field field, boolean isAllowNull) Returns the generic type parameter of a return value by a field or method.
static java.lang.Class	getGenericReturnType(java.lang.reflect.Method method, boolean isAllowNull) Returns the generic type parameter of a return value by a method.
static java.lang.Class	getGenericReturnType(java.lang.reflect.Method method, java.lang.reflect.Field field, boolean isAllowNull) Returns the generic type parameter of a return value by a field or method.
static java.lang.Class	getGenericReturnTypeMap(java.lang.reflect.Method method, boolean isAllowNull) Returns the second generic type parameter of a return value by a field or method.
static java.lang.Class	getGenericReturnTypeMap(java.lang.reflect.Method method, java.lang.reflect.Field field, boolean isAllowNull) Returns the second generic type parameter of a return value by a field or method.
static java.lang.Class	getGenericType(java.lang.reflect.Type t, int index)
static java.lang.String	getMessageInvocationTarget(java.lang.String statementName, java.lang.reflect.Method method, java.lang.String classOrPropertyName, java.lang.Object[] args, java.lang.Throwable targetException)
static java.lang.reflect.Method	getMethodByName(java.lang.Class clazz, java.lang.String methodName)
static int	getNumberOfDimensions(java.lang.Class clazz)
static java.lang.String	getParameterAsString(java.lang.Class param) Returns a parameter as a string text, allowing null values to represent a null select expression type.
static java.lang.String	getParameterAsString(java.lang.Class[] parameters) Returns a comma-separated parameter type list in readable form, considering arrays and null-type parameters.
static java.lang.Class	getPrimitiveClassForName(java.lang.String typeName) Returns the class for a Java primitive type name, ignoring case, and considering String as a primitive.
static java.lang.Class	getPrimitiveType(java.lang.Class clazz) Returns the un-boxed class for the given class, or the class itself if already un-boxed or not a primitive type.
static java.lang.String	getSimpleNameForClass(java.lang.Class clazz)
static void	getSuper(java.lang.Class clazz, java.util.Set<java.lang.Class> result) Populates all interface and superclasses for the given class, recursivly.
static java.lang.Class[]	getSuperInterfaces(java.lang.Class clazz)
static void	getSuperInterfaces(java.lang.Class clazz, java.util.Set<java.lang.Class> result)
static java.lang.Object	instantiate(java.lang.Class implementedOrExtendedClass, java.lang.Class clazz) Checks that the given class implements or extends the required interface (first parameter), and instantiates an object.
static java.lang.Object	instantiate(java.lang.Class implementedOrExtendedClass, java.lang.String className, ClassForNameProvider classForNameProvider) Looks up the given class and checks that it implements or extends the required interface, and instantiates an object.
static boolean	isAnnotationListed(java.lang.Class<? extends java.lang.annotation.Annotation> annotationClass, java.lang.annotation.Annotation[] annotations)
static boolean	isArrayTypeCompatible(java.lang.Class target, java.lang.Class provided)
static boolean	isAssignmentCompatible(java.lang.Class invocationType, java.lang.Class declarationType) Returns true if 2 classes are assignment compatible.
static boolean	isBigNumberType(java.lang.Class clazz) Returns true if the type is one of the big number types, i.e.
static boolean	isBoolean(java.lang.Class clazz) Determines if the class passed in is a boolean boxed or unboxed type.
static boolean	isCollectionMapOrArray(java.lang.Class returnType)
static boolean	isDatetimeClass(java.lang.Class inputType)
static boolean	isFloatingPointClass(java.lang.Class clazz) Returns true if the supplied type is a floating point number.
static boolean	isFloatingPointNumber(java.lang.Number number) Returns true if the Number instance is a floating point number.
static boolean	isFragmentableType(java.lang.Class propertyType) Returns true if the Class is a fragmentable type, i.e.
static Pair<java.lang.String,java.lang.Boolean>	isGetArrayType(java.lang.String type)
static boolean	isImplementsCharSequence(java.lang.Class type)
static boolean	isImplementsInterface(java.lang.Class clazz, java.lang.Class interfaceClass) Method to check if a given class, and its superclasses and interfaces (deep), implement a given interface.
static boolean	isJavaBuiltinDataType(java.lang.Class clazz) Returns true if the class passed in is a Java built-in data type (primitive or wrapper) including String and 'null'.
static boolean	isNumeric(java.lang.Class clazz) Determines if the class passed in is one of the numeric classes.
static boolean	isNumericNonFP(java.lang.Class clazz) Determines if the class passed in is one of the numeric classes and not a floating point.
static boolean	isSignatureCompatible(java.lang.Class<?>[] one, java.lang.Class<?>[] two)
static boolean	isSimpleNameFullyQualfied(java.lang.String simpleClassName, java.lang.String fullyQualifiedClassname) Returns true if the simple class name is the class name of the fully qualified classname.
static boolean	isSubclassOrImplementsInterface(java.lang.Class extendorOrImplementor, java.lang.Class extendedOrImplemented) Method to check if a given class, and its superclasses and interfaces (deep), implement a given interface or extend a given class.
static java.lang.Object	parse(java.lang.Class clazz, java.lang.String text) Parse the String using the given Java built-in class for parsing.
static java.lang.String	printInstance(java.lang.Object instance, boolean fullyQualified)
static java.lang.Object	resolveIdentAsEnumConst(java.lang.String constant, EngineImportService engineImportService, boolean isAnnotation) Resolve a string constant as a possible enumeration value, returning null if not resolved.
static void	setFieldForAnnotation(java.lang.Object target, java.lang.Class<? extends java.lang.annotation.Annotation> annotation, java.lang.Object value)
static java.lang.Class[]	takeFirstN(java.lang.Class[] classes, int numToTake)
static java.lang.reflect.Type[]	takeFirstN(java.lang.reflect.Type[] types, int numToTake)
static void	writeInstance(java.io.StringWriter writer, java.lang.Object instance, boolean fullyQualified)
static void	writeInstance(java.io.StringWriter writer, java.lang.String title, java.lang.Object instance)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JavaClassHelper

public JavaClassHelper()

Method Detail

isImplementsCharSequence

public static boolean isImplementsCharSequence(java.lang.Class type)

isArrayTypeCompatible

public static boolean isArrayTypeCompatible(java.lang.Class target,
                                            java.lang.Class provided)

isCollectionMapOrArray

public static boolean isCollectionMapOrArray(java.lang.Class returnType)

getBoxedType

public static java.lang.Class getBoxedType(java.lang.Class clazz)

Returns the boxed class for the given class, or the class itself if already boxed or not a primitive type. For primitive unboxed types returns the boxed types, e.g. returns java.lang.Integer for passing int.class. For any other class, returns the class passed.

Parameters:

clazz - is the class to return the boxed class for

Returns:

boxed variant of the same class

getParameterAsString

public static java.lang.String getParameterAsString(java.lang.Class[] parameters)

Returns a comma-separated parameter type list in readable form, considering arrays and null-type parameters.

Parameters:

parameters - is the parameter types to render

Returns:

rendered list of parameters

getParameterAsString

public static java.lang.String getParameterAsString(java.lang.Class param)

Returns a parameter as a string text, allowing null values to represent a null select expression type.

Parameters:

param - is the parameter type

Returns:

string representation of parameter

getPrimitiveType

public static java.lang.Class getPrimitiveType(java.lang.Class clazz)

Returns the un-boxed class for the given class, or the class itself if already un-boxed or not a primitive type. For primitive boxed types returns the unboxed primitive type, e.g. returns int.class for passing Integer.class. For any other class, returns the class passed.

Parameters:

clazz - is the class to return the unboxed (or primitive) class for

Returns:

primitive variant of the same class

isNumeric

public static boolean isNumeric(java.lang.Class clazz)

Determines if the class passed in is one of the numeric classes.

Parameters:

clazz - to check

Returns:

true if numeric, false if not

isNumericNonFP

public static boolean isNumericNonFP(java.lang.Class clazz)

Determines if the class passed in is one of the numeric classes and not a floating point.

Parameters:

clazz - to check

Returns:

true if numeric and not a floating point, false if not

isAssignmentCompatible

public static boolean isAssignmentCompatible(java.lang.Class invocationType,
                                             java.lang.Class declarationType)

Returns true if 2 classes are assignment compatible.

Parameters:

invocationType - type to assign from

declarationType - type to assign to

Returns:

true if assignment compatible, false if not

isBoolean

public static boolean isBoolean(java.lang.Class clazz)

Determines if the class passed in is a boolean boxed or unboxed type.

Parameters:

clazz - to check

Returns:

true if boolean, false if not

getArithmaticCoercionType

public static java.lang.Class getArithmaticCoercionType(java.lang.Class typeOne,
                                                        java.lang.Class typeTwo)
                                                 throws CoercionException

Returns the coercion type for the 2 numeric types for use in arithmatic. Note: byte and short types always result in integer.

Parameters:

typeOne - is the first type

typeTwo - is the second type

Returns:

coerced type

Throws:

CoercionException - if types don't allow coercion

coerceBoxed

public static java.lang.Number coerceBoxed(java.lang.Number numToCoerce,
                                           java.lang.Class resultBoxedType)

Coerce the given number to the given type, assuming the type is a Boxed type. Allows coerce to lower resultion number. Does't coerce to primitive types.

Meant for statement compile-time use, not for runtime use.

Parameters:

numToCoerce - is the number to coerce to the given type

resultBoxedType - is the boxed result type to return

Returns:

the numToCoerce as a value in the given result type

coerceNumberBoxedToBoxedCodegen

public static CodegenExpression coerceNumberBoxedToBoxedCodegen(CodegenExpression exprReturningBoxed,
                                                                java.lang.Class fromTypeBoxed,
                                                                java.lang.Class targetTypeBoxed)

coerceNumberToBoxedCodegen

public static CodegenExpression coerceNumberToBoxedCodegen(CodegenExpression expr,
                                                           java.lang.Class fromType,
                                                           java.lang.Class targetTypeBoxed)

isFloatingPointNumber

public static boolean isFloatingPointNumber(java.lang.Number number)

Returns true if the Number instance is a floating point number.

Parameters:

number - to check

Returns:

true if number is Float or Double type

isFloatingPointClass

public static boolean isFloatingPointClass(java.lang.Class clazz)

Returns true if the supplied type is a floating point number.

Parameters:

clazz - to check

Returns:

true if primitive or boxed float or double

getCompareToCoercionType

public static java.lang.Class getCompareToCoercionType(java.lang.Class typeOne,
                                                       java.lang.Class typeTwo)
                                                throws CoercionException

Returns for 2 classes to be compared via relational operator the Class type of common comparison. The output is always Long.class, Double.class, String.class or Boolean.class depending on whether the passed types are numeric and floating-point. Accepts primitive as well as boxed types.

Parameters:

typeOne - is the first type

typeTwo - is the second type

Returns:

One of Long.class, Double.class or String.class

Throws:

CoercionException - if the types cannot be compared

isBigNumberType

public static boolean isBigNumberType(java.lang.Class clazz)

Returns true if the type is one of the big number types, i.e. BigDecimal or BigInteger

Parameters:

clazz - to check

Returns:

true for big number

canCoerce

public static boolean canCoerce(java.lang.Class numberClassToBeCoerced,
                                java.lang.Class numberClassToCoerceTo)

Determines if a number can be coerced upwards to another number class without loss.

Clients must pass in two classes that are numeric types.

Any number class can be coerced to double, while only double cannot be coerced to float. Any non-floating point number can be coerced to long. Integer can be coerced to Byte and Short even though loss is possible, for convenience.

Parameters:

numberClassToBeCoerced - the number class to be coerced

numberClassToCoerceTo - the number class to coerce to

Returns:

true if numbers can be coerced without loss, false if not

getBoxedClassName

public static java.lang.String getBoxedClassName(java.lang.String className)

Returns for the class name given the class name of the boxed (wrapped) type if the class name is one of the Java primitive types.

Parameters:

className - is a class name, a Java primitive type or other class

Returns:

boxed class name if Java primitive type, or just same class name passed in if not a primitive type

isJavaBuiltinDataType

public static boolean isJavaBuiltinDataType(java.lang.Class clazz)

Returns true if the class passed in is a Java built-in data type (primitive or wrapper) including String and 'null'.

Parameters:

clazz - to check

Returns:

true if built-in data type, or false if not

getCommonCoercionType

public static java.lang.Class getCommonCoercionType(java.lang.Class[] types)
                                             throws CoercionException

Determines a common denominator type to which one or more types can be casted or coerced. For use in determining the result type in certain expressions (coalesce, case).

Null values are allowed as part of the input and indicate a 'null' constant value in an expression tree. Such as value doesn't have any type and can be ignored in determining a result type.

For numeric types, determines a coercion type that all types can be converted to via the method getArithmaticCoercionType.

Indicates that there is no common denominator type by throwing CoercionException.

Parameters:

types - is an array of one or more types, which can be Java built-in (primitive or wrapper) or user types

Returns:

common denominator type if any can be found, for use in comparison

Throws:

CoercionException - when no coercion type could be determined

getClassForName

public static java.lang.Class getClassForName(java.lang.String className,
                                              ClassForNameProvider classForNameProvider)
                                       throws java.lang.ClassNotFoundException

Returns the class given a fully-qualified class name.

Parameters:

className - is the fully-qualified class name, java primitive types included.

classForNameProvider - lookup of class for class name

Returns:

class for name

Throws:

java.lang.ClassNotFoundException - if the class cannot be found

getClassForSimpleName

public static java.lang.Class getClassForSimpleName(java.lang.String className,
                                                    ClassForNameProvider classForNameProvider)
                                             throws EventAdapterException

Returns the boxed class for the given classname, recognizing all primitive and abbreviations, uppercase and lowercase.

Recognizes "int" as Integer.class and "strIng" as String.class, and "Integer" as Integer.class, and so on.

Parameters:

className - is the name to recognize

classForNameProvider - lookup of class for class name

Returns:

class

Throws:

EventAdapterException - is throw if the class cannot be identified

getSimpleNameForClass

public static java.lang.String getSimpleNameForClass(java.lang.Class clazz)

getPrimitiveClassForName

public static java.lang.Class getPrimitiveClassForName(java.lang.String typeName)

Returns the class for a Java primitive type name, ignoring case, and considering String as a primitive.

Parameters:

typeName - is a potential primitive Java type, or some other type name

Returns:

class for primitive type name, or null if not a primitive type.

parse

public static java.lang.Object parse(java.lang.Class clazz,
                                     java.lang.String text)

Parse the String using the given Java built-in class for parsing.

Parameters:

clazz - is the class to parse the value to

text - is the text to parse

Returns:

value matching the type passed in

isImplementsInterface

public static boolean isImplementsInterface(java.lang.Class clazz,
                                            java.lang.Class interfaceClass)

Method to check if a given class, and its superclasses and interfaces (deep), implement a given interface.

Parameters:

clazz - to check, including all its superclasses and their interfaces and extends

interfaceClass - is the interface class to look for

Returns:

true if such interface is implemented by any of the clazz or its superclasses or extends by any interface and superclasses (deep check)

isSubclassOrImplementsInterface

public static boolean isSubclassOrImplementsInterface(java.lang.Class extendorOrImplementor,
                                                      java.lang.Class extendedOrImplemented)

Method to check if a given class, and its superclasses and interfaces (deep), implement a given interface or extend a given class.

Parameters:

extendorOrImplementor - is the class to inspects its extends and implements clauses

extendedOrImplemented - is the potential interface, or superclass, to check

Returns:

true if such interface is implemented by any of the clazz or its superclasses or extends by any interface and superclasses (deep check)

instantiate

public static java.lang.Object instantiate(java.lang.Class implementedOrExtendedClass,
                                           java.lang.String className,
                                           ClassForNameProvider classForNameProvider)
                                    throws ClassInstantiationException

Looks up the given class and checks that it implements or extends the required interface, and instantiates an object.

Parameters:

implementedOrExtendedClass - is the class that the looked-up class should extend or implement

className - of the class to load, check type and instantiate

classForNameProvider - lookup of class for class name

Returns:

instance of given class, via newInstance

Throws:

ClassInstantiationException - if the type does not match or the class cannot be loaded or an object instantiated

instantiate

public static java.lang.Object instantiate(java.lang.Class implementedOrExtendedClass,
                                           java.lang.Class clazz)
                                    throws ClassInstantiationException

Checks that the given class implements or extends the required interface (first parameter), and instantiates an object.

Parameters:

implementedOrExtendedClass - is the class that the looked-up class should extend or implement

clazz - to check type and instantiate

Returns:

instance of given class, via newInstance

Throws:

ClassInstantiationException - if the type does not match or the class cannot be loaded or an object instantiated

getSuper

public static void getSuper(java.lang.Class clazz,
                            java.util.Set<java.lang.Class> result)

Populates all interface and superclasses for the given class, recursivly.

Parameters:

clazz - to reflect upon

result - set of classes to populate

isSimpleNameFullyQualfied

public static boolean isSimpleNameFullyQualfied(java.lang.String simpleClassName,
                                                java.lang.String fullyQualifiedClassname)

Returns true if the simple class name is the class name of the fully qualified classname.

This method does not verify validity of class and package names, it uses simple string compare inspecting the trailing part of the fully qualified class name.

Parameters:

simpleClassName - simple class name

fullyQualifiedClassname - fully qualified class name contains package name and simple class name

Returns:

true if simple class name of the fully qualified class name, false if not

isFragmentableType

public static boolean isFragmentableType(java.lang.Class propertyType)

Returns true if the Class is a fragmentable type, i.e. not a primitive or boxed type or any of the common built-in types or does not implement Map.

Parameters:

propertyType - type to check

Returns:

true if fragmentable

getSuperInterfaces

public static java.lang.Class[] getSuperInterfaces(java.lang.Class clazz)

getSuperInterfaces

public static void getSuperInterfaces(java.lang.Class clazz,
                                      java.util.Set<java.lang.Class> result)

getGenericReturnType

public static java.lang.Class getGenericReturnType(java.lang.reflect.Method method,
                                                   java.lang.reflect.Field field,
                                                   boolean isAllowNull)

Returns the generic type parameter of a return value by a field or method.

Parameters:

method - method or null if field

field - field or null if method

isAllowNull - whether null is allowed as a return value or expected Object.class

Returns:

generic type parameter

getGenericReturnTypeMap

public static java.lang.Class getGenericReturnTypeMap(java.lang.reflect.Method method,
                                                      java.lang.reflect.Field field,
                                                      boolean isAllowNull)

Returns the second generic type parameter of a return value by a field or method.

Parameters:

method - method or null if field

field - field or null if method

isAllowNull - whether null is allowed as a return value or expected Object.class

Returns:

generic type parameter

getGenericReturnType

public static java.lang.Class getGenericReturnType(java.lang.reflect.Method method,
                                                   boolean isAllowNull)

Returns the generic type parameter of a return value by a method.

Parameters:

method - method or null if field

isAllowNull - whether null is allowed as a return value or expected Object.class

Returns:

generic type parameter

getGenericReturnTypeMap

public static java.lang.Class getGenericReturnTypeMap(java.lang.reflect.Method method,
                                                      boolean isAllowNull)

Returns the second generic type parameter of a return value by a field or method.

Parameters:

method - method or null if field

isAllowNull - whether null is allowed as a return value or expected Object.class

Returns:

generic type parameter

getGenericFieldType

public static java.lang.Class getGenericFieldType(java.lang.reflect.Field field,
                                                  boolean isAllowNull)

Returns the generic type parameter of a return value by a field.

Parameters:

field - field or null if method

isAllowNull - whether null is allowed as a return value or expected Object.class

Returns:

generic type parameter

getGenericFieldTypeMap

public static java.lang.Class getGenericFieldTypeMap(java.lang.reflect.Field field,
                                                     boolean isAllowNull)

Returns the generic type parameter of a return value by a field or method.

Parameters:

field - field or null if method

isAllowNull - whether null is allowed as a return value or expected Object.class

Returns:

generic type parameter

getGenericType

public static java.lang.Class getGenericType(java.lang.reflect.Type t,
                                             int index)

getAnnotationHook

public static java.lang.Object getAnnotationHook(java.lang.annotation.Annotation[] annotations,
                                                 HookType hookType,
                                                 java.lang.Class interfaceExpected,
                                                 EngineImportService engineImportService)
                                          throws ExprValidationException

Returns an instance of a hook as specified by an annotation.

Parameters:

annotations - to search

hookType - type to look for

interfaceExpected - interface required

engineImportService - for resolving references

Returns:

hook instance

Throws:

ExprValidationException - if instantiation failed

resolveIdentAsEnumConst

public static java.lang.Object resolveIdentAsEnumConst(java.lang.String constant,
                                                       EngineImportService engineImportService,
                                                       boolean isAnnotation)
                                                throws ExprValidationException

Resolve a string constant as a possible enumeration value, returning null if not resolved.

Parameters:

constant - to resolve

engineImportService - for engine-level use to resolve enums, can be null

isAnnotation - whether we are in an annotation

Returns:

null or enumeration value

Throws:

ExprValidationException - if there is an error accessing the enum

getArrayType

public static java.lang.Class getArrayType(java.lang.Class resultType)

getClassNameFullyQualPretty

public static java.lang.String getClassNameFullyQualPretty(java.lang.Class clazz)

getClassNameFullyQualPrettyWithClassloader

public static java.lang.String getClassNameFullyQualPrettyWithClassloader(java.lang.Class clazz)

getClassLoaderId

public static java.lang.String getClassLoaderId(java.lang.ClassLoader classLoader)

getMethodByName

public static java.lang.reflect.Method getMethodByName(java.lang.Class clazz,
                                                       java.lang.String methodName)

printInstance

public static java.lang.String printInstance(java.lang.Object instance,
                                             boolean fullyQualified)

writeInstance

public static void writeInstance(java.io.StringWriter writer,
                                 java.lang.Object instance,
                                 boolean fullyQualified)

writeInstance

public static void writeInstance(java.io.StringWriter writer,
                                 java.lang.String title,
                                 java.lang.Object instance)

getMessageInvocationTarget

public static java.lang.String getMessageInvocationTarget(java.lang.String statementName,
                                                          java.lang.reflect.Method method,
                                                          java.lang.String classOrPropertyName,
                                                          java.lang.Object[] args,
                                                          java.lang.Throwable targetException)

isDatetimeClass

public static boolean isDatetimeClass(java.lang.Class inputType)

getClassObjectFromPropertyTypeNames

public static java.util.Map<java.lang.String,java.lang.Object> getClassObjectFromPropertyTypeNames(java.util.Properties properties,
                                                                                                   ClassForNameProvider classForNameProvider)

getClassInClasspath

public static java.lang.Class getClassInClasspath(java.lang.String classname,
                                                  ClassForNameProvider classForNameProvider)

isSignatureCompatible

public static boolean isSignatureCompatible(java.lang.Class<?>[] one,
                                            java.lang.Class<?>[] two)

findRequiredMethod

public static java.lang.reflect.Method findRequiredMethod(java.lang.Class clazz,
                                                          java.lang.String methodName)

getAnnotations

public static java.util.List<java.lang.annotation.Annotation> getAnnotations(java.lang.Class<? extends java.lang.annotation.Annotation> annotationClass,
                                                                             java.lang.annotation.Annotation[] annotations)

isAnnotationListed

public static boolean isAnnotationListed(java.lang.Class<? extends java.lang.annotation.Annotation> annotationClass,
                                         java.lang.annotation.Annotation[] annotations)

findAnnotatedFields

public static java.util.Set<java.lang.reflect.Field> findAnnotatedFields(java.lang.Class targetClass,
                                                                         java.lang.Class<? extends java.lang.annotation.Annotation> annotation)

findAnnotatedMethods

public static java.util.Set<java.lang.reflect.Method> findAnnotatedMethods(java.lang.Class targetClass,
                                                                           java.lang.Class<? extends java.lang.annotation.Annotation> annotation)

setFieldForAnnotation

public static void setFieldForAnnotation(java.lang.Object target,
                                         java.lang.Class<? extends java.lang.annotation.Annotation> annotation,
                                         java.lang.Object value)

isGetArrayType

public static Pair<java.lang.String,java.lang.Boolean> isGetArrayType(java.lang.String type)

takeFirstN

public static java.lang.Class[] takeFirstN(java.lang.Class[] classes,
                                           int numToTake)

takeFirstN

public static java.lang.reflect.Type[] takeFirstN(java.lang.reflect.Type[] types,
                                                  int numToTake)

getComponentTypeOutermost

public static java.lang.Class getComponentTypeOutermost(java.lang.Class clazz)

getNumberOfDimensions

public static int getNumberOfDimensions(java.lang.Class clazz)