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GEARS Runtime Common

There is a newer version: 1.17.5

package com.xlrit.gears.base.repository;

import java.lang.reflect.Constructor;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.xlrit.gears.base.execution.Execution;
import com.xlrit.gears.base.id.IdGenerator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class TestRepository extends AbstractRepository {
	private static final Logger LOG = LoggerFactory.getLogger(TestRepository.class);

	private final IdGenerator idGenerator;
	private final Map knownElements;

	public TestRepository(Class entityType, IdGenerator idGenerator) {
		super(entityType);
		this.idGenerator = idGenerator;
		this.knownElements = new HashMap<>();
	}

	public TestRepository(Class entityType) {
		this(entityType, null);
	}

	public void addKnownElement(String id, T element) {
		knownElements.put(id, element);
	}

	@Override
	public List findAll() {
		return List.copyOf(knownElements.values());
	}

	@Override
	public T findById(String id) {
		return knownElements.get(id);
	}

	@Override
	protected T doCreate(Execution execution) {
		if (idGenerator == null) throw new UnsupportedOperationException("Creation is only possible when an IdGenerator is set");
		try {
			String id = idGenerator.getNextId();
			Constructor constructor = entityType.getConstructor(String.class);
			T element = constructor.newInstance(id);
			addKnownElement(id, element);
			return element;
		}
		catch (ReflectiveOperationException e) {
			throw new RuntimeException(e);
		}
	}

	@Override
	protected void doRemove(T instance, Execution execution) {
		throw new UnsupportedOperationException();
	}
}