load_generator/commons/plugins/org.eclipse.app4mc.slg.commons.m2t/src/org/eclipse/app4mc/slg/commons/m2t/SLGBaseTransformer.java

/**
 * Copyright (c) 2020 Robert Bosch GmbH.
 * 
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 * 
 * SPDX-License-Identifier: EPL-2.0
 * 
 * Contributors:
 *     Robert Bosch GmbH - initial API and implementation
 */

package org.eclipse.app4mc.slg.commons.m2t;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.stream.Collectors;

import org.eclipse.app4mc.slg.commons.m2t.generators.TranslationUnit;

import com.google.inject.Inject;

public abstract class SLGBaseTransformer {

	@Inject Properties properties;

	protected String getProperty(final String propKey) {
		final Object value = this.properties.get(propKey);
		if ((value == null)) {
			throw new NullPointerException(
					(("Request input key : \"" + propKey) + "\" not supplied in the input properties file"));
		}
		return value.toString();
	}

	public Map<ArrayList<?>, ? extends TranslationUnit> getCache() {
		return new HashMap<>();
	}

	public List<String> getSrcFiles() {

		return getCache().values().stream()
				.map(TranslationUnit::getSrcFile)
				.sorted()
				.distinct()
				.collect(Collectors.toList());
	}

}