Package org.refcodes.structure
Class TypeUtility
- java.lang.Object
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- org.refcodes.structure.TypeUtility
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public class TypeUtility extends java.lang.Object
The Class TypeUtility.
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Constructor Summary
Constructors Constructor Description TypeUtility()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description protected static java.lang.String
fromGetter(java.lang.reflect.Method aMethod)
static boolean
isGetter(java.lang.reflect.Method aMethod)
Tests whether we have a getter method.static boolean
isSetter(java.lang.reflect.Method aMethod)
Tests whether we have a setter method.static <T> void
toInstance(java.lang.Object aValue, T aInstance)
Updates the provided instance with the data provided by the given value (a mixture of array andMap
objects).static java.lang.String
toPropertyName(java.lang.reflect.Field aField)
Converts a field's name to a property name.static java.lang.String
toPropertyName(java.lang.reflect.Method aMethod)
Converts a method's name to a property name.static <T> T
toType(java.lang.Object aValue, java.lang.Class<T> aType)
Creates an instance of the given type filled with the data provided by the given Data-Structure (a mixture of array andMap
objects).
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Method Detail
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toType
public static <T> T toType(java.lang.Object aValue, java.lang.Class<T> aType) throws java.lang.InstantiationException, java.lang.IllegalAccessException, java.lang.NoSuchMethodException, java.lang.SecurityException, java.lang.reflect.InvocationTargetException, java.lang.ClassNotFoundException
Creates an instance of the given type filled with the data provided by the given Data-Structure (a mixture of array andMap
objects).- Type Parameters:
T
- the generic type- Parameters:
aValue
- The Data-Structure, a mixture of arrays andMap
instance, from which to construct the instance of the given type.aType
- The type for which an instance is to be created.- Returns:
- The instance filled by the data from the given Data-Structure
- Throws:
java.lang.InstantiationException
- thrown when an application tries to create an instance of a class using the newInstance method in classClass
, but the specified class object cannot be instantiated.java.lang.IllegalAccessException
- thrown when an application tries to reflectively create an instance (other than an array), set or get a field, or invoke a method, but the currently executing method does not have access to the definition of the specified class, field, method or constructor.java.lang.NoSuchMethodException
- thrown when a particular method cannot be found.java.lang.SecurityException
- thrown by the security manager to indicate a security violation.java.lang.reflect.InvocationTargetException
- wraps an exception thrown by an invoked method or constructor.java.lang.ClassNotFoundException
- thrown when an application tries to load in a class through its string name but no definition for the class with the specified name could be found.
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toInstance
public static <T> void toInstance(java.lang.Object aValue, T aInstance) throws java.lang.InstantiationException, java.lang.IllegalAccessException, java.lang.NoSuchMethodException, java.lang.SecurityException, java.lang.reflect.InvocationTargetException, java.lang.ClassNotFoundException
Updates the provided instance with the data provided by the given value (a mixture of array andMap
objects). In case the instance to be updated represents an array, then at most it is filled with the provided value's elements, even if the value provides more elements than would fit. On the other hand, if the instance's array to be updated provides room for more elements than the value can provide, then the remaining instance's elements are left as are.- Type Parameters:
T
- the generic type- Parameters:
aValue
- The Data-Structure, a mixture of arrays andMap
instance, from which to update the instance of the given type.aInstance
- The instance to be updated.- Throws:
java.lang.InstantiationException
- thrown when an application tries to create an instance of a class using the newInstance method in classClass
, but the specified class object cannot be instantiated.java.lang.IllegalAccessException
- thrown when an application tries to reflectively create an instance (other than an array), set or get a field, or invoke a method, but the currently executing method does not have access to the definition of the specified class, field, method or constructor.java.lang.NoSuchMethodException
- thrown when a particular method cannot be found.java.lang.SecurityException
- thrown by the security manager to indicate a security violation.java.lang.reflect.InvocationTargetException
- wraps an exception thrown by an invoked method or constructor.java.lang.ClassNotFoundException
- thrown when an application tries to load in a class through its string name but no definition for the class with the specified name could be found.
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isSetter
public static boolean isSetter(java.lang.reflect.Method aMethod)
Tests whether we have a setter method. A setter method must not return a value and expect exactly one argument. It also must be public.- Parameters:
aMethod
- TheMethod
to be tested.- Returns:
- True in case we have a setter method, else false.
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isGetter
public static boolean isGetter(java.lang.reflect.Method aMethod)
Tests whether we have a getter method. A getter method must return a value (other thanVoid
) and expect none arguments. It also must be public.- Parameters:
aMethod
- TheMethod
to be tested.- Returns:
- True in case we have a getter method, else false.
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toPropertyName
public static java.lang.String toPropertyName(java.lang.reflect.Method aMethod)
Converts a method's name to a property name.- Parameters:
aMethod
- TheMethod
which's name is to be converted to a property name.- Returns:
- The according property name or null if we do not have a property method.
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toPropertyName
public static java.lang.String toPropertyName(java.lang.reflect.Field aField)
Converts a field's name to a property name.- Parameters:
aField
- TheField
which's name is to be converted to a property name.- Returns:
- The according property name or null if we do not have a property method.
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fromGetter
protected static java.lang.String fromGetter(java.lang.reflect.Method aMethod)
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