ru.vyarus.java.generics.resolver.util

Class TypeToStringUtils

java.lang.Object

ru.vyarus.java.generics.resolver.util.TypeToStringUtils

public final class TypeToStringUtils
extends java.lang.Object

Builds string representation for type in context of generified class.

Since:

17.11.2014

Method Summary

Modifier and Type	Method and Description
static java.lang.String	toStringConstructor(java.lang.reflect.Constructor constructor, java.util.Map<java.lang.String,java.lang.reflect.Type> generics) class B extends A<Long> {} class A<T> { A(T arg); } Constructor method = A.class.getConstructor(Object.class); Map<String, Type> generics = (context of B).method().visibleGenericsMap(); TypeToStringUtils.toStringConstructor(constructor, generics) == "A(Long)" .
static java.lang.String	toStringMethod(java.lang.reflect.Method method, java.util.Map<java.lang.String,java.lang.reflect.Type> generics) class B extends A<Long> {} class A<T> { List<T> get(T one); } Method method = A.class.getMethod("get", Object.class); Map<String, Type> generics = (context of B).method().visibleGenericsMap(); TypeToStringUtils.toStringMethod(method, generics) == "List<Long> get(Long)" .
static java.lang.String	toStringType(java.lang.reflect.Type type, java.util.Map<java.lang.String,java.lang.reflect.Type> generics) Prints type as string.
static java.lang.String	toStringWithGenerics(java.lang.Class<?> type, java.util.Map<java.lang.String,java.lang.reflect.Type> generics) Formats class as Class<generics>.
static java.lang.String	toStringWithNamedGenerics(java.lang.Class<?> type) Print class with generic variables.

Methods inherited from class java.lang.Object

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

Method Detail

toStringType

public static java.lang.String toStringType(java.lang.reflect.Type type,
                                            java.util.Map<java.lang.String,java.lang.reflect.Type> generics)

Prints type as string. E.g. toStringType(ParameterizedType(List, String), [:]) == "List<String>", toStringType(WildcardType(String), [:]) == "? extends String" .

If ParameterizedType is inner class and contains information about outer generics, it will be printed as Outer<Generics>.Inner<Generics> in order to indicate all available information. In other cases outer class is not indicated.

Parameters:

type - type to convert to string

generics - type class generics type

Returns:

string representation of provided type

Throws:

UnknownGenericException - when found generic not declared on type (e.g. method generic)

See Also:

to print not known generic names, to print Object instead of not known generic

toStringWithNamedGenerics

public static java.lang.String toStringWithNamedGenerics(java.lang.Class<?> type)

Print class with generic variables. For example, List<T>.

Parameters:

type - class to print

Returns:

string containing class and it's declared generics

toStringWithGenerics

public static java.lang.String toStringWithGenerics(java.lang.Class<?> type,
                                                    java.util.Map<java.lang.String,java.lang.reflect.Type> generics)

Formats class as Class<generics>. Only actual class generics are rendered. Intended to be used for error reporting.

Parameters:

type - class class to print with generics

generics - known generics map class generics map

Returns:

generified class string

See Also:

to print not known generic names, to print Object instead of not known generic

toStringMethod

public static java.lang.String toStringMethod(java.lang.reflect.Method method,
                                              java.util.Map<java.lang.String,java.lang.reflect.Type> generics)

 class B extends A<Long> {}
 class A<T> {
      List<T> get(T one);
 }

 Method method = A.class.getMethod("get", Object.class);
 Map<String, Type> generics = (context of B).method().visibleGenericsMap();
 TypeToStringUtils.toStringMethod(method, generics) == "List<Long> get(Long)"
 

.

Parameters:

method - method

generics - required generics (type generics and possible method generics)

Returns:

method string with replaced generic variables

See Also:

to print not known generic names, to print Object instead of not known generic

toStringConstructor

public static java.lang.String toStringConstructor(java.lang.reflect.Constructor constructor,
                                                   java.util.Map<java.lang.String,java.lang.reflect.Type> generics)

 class B extends A<Long> {}
 class A<T> {
      A(T arg);
 }

 Constructor method = A.class.getConstructor(Object.class);
 Map<String, Type> generics = (context of B).method().visibleGenericsMap();
 TypeToStringUtils.toStringConstructor(constructor, generics) == "A(Long)"
 

.

Parameters:

constructor - constructor

generics - required generics (type generics and possible constructor generics)

Returns:

constructor string with replaced generic variables

See Also:

to print not known generic names, to print Object instead of not known generic