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Provides common utility functions

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/*
 * Copyright (c) CQSE GmbH
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.conqat.lib.commons.serialization.utils;

import java.io.IOException;
import java.util.Collections;
import java.util.List;

import org.conqat.lib.commons.collections.CollectionUtils;
import org.conqat.lib.commons.serialization.SerializedEntityPool;
import org.conqat.lib.commons.serialization.classes.SerializedClass;
import org.conqat.lib.commons.serialization.objects.SerializedObject;

/**
 * Utility methods for dealing with serialized entities.
 */
public class SerializedEntityUtils {

	/** Returns all instances of the given class. */
	public static List findInstancesOf(SerializedClass serializedClass,
			SerializedEntityPool entityPool) throws IOException {
		if (serializedClass == null) {
			return Collections.emptyList();
		}
		return CollectionUtils.filter(entityPool.getEntities(SerializedObject.class),
				entity -> entity.getClassHandle() == serializedClass.getHandle());
	}
}