Package org.apache.ignite.table.mapper

Class RecordSupportInternal

java.lang.Object

org.apache.ignite.table.mapper.RecordSupportInternal

public final class RecordSupportInternal
extends Object

Enables access to RecordSupport without reflection to provides utility methods to support records in Java 11.

Method Summary

Modifier and Type	Method	Description
static <T> Constructor<T>	getCanonicalConstructor(Class<T> clazz)	Java 11 compatible, reflection based alternative to find the record canonical constructor.
static boolean	isRecord(Class<?> clazz)	Java 11 compatible, reflection based alternative, that returns true if and only if this class is a record class.

Methods inherited from class java.lang.Object

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

Method Details

isRecord

public static boolean isRecord(Class<?> clazz)
                        throws IllegalAccessException

Java 11 compatible, reflection based alternative, that returns true if and only if this class is a record class.

Without reflection:

 Class<?> clazz;
 clazz.isRecord();
 

Parameters:

clazz - Class to check.

Returns:

true if and only if the given class is a record class.

Throws:

IllegalAccessException - If the record support methods could not be accessed.

getCanonicalConstructor

public static <T> Constructor<T> getCanonicalConstructor(Class<T> clazz)
                                                  throws NoSuchMethodException,
InvocationTargetException,
IllegalAccessException,
ClassNotFoundException

Java 11 compatible, reflection based alternative to find the record canonical constructor.

Without reflection:

 static <T extends Record> Constructor<T> getCanonicalConstructor(Class<T> cls)
     throws NoSuchMethodException {
   Class<?>[] paramTypes =
     Arrays.stream(cls.getRecordComponents())
           .map(RecordComponent::getType)
           .toArray(Class<?>[]::new);
   return cls.getDeclaredConstructor(paramTypes);
 }
 

Type Parameters:

T - Type of the record class.

Parameters:

clazz - Record class to find the canonical constructor for.

Returns:

Canonical constructor of the given record class.

Throws:

NoSuchMethodException - If the canonical constructor could not be found.

InvocationTargetException - If a reflective record support method threw an exception.

IllegalAccessException - If a reflective record support method could not be accessed.

ClassNotFoundException - If java.lang.reflect.RecordComponent could not be resolved.