org.springframework.core.annotation.AbstractMergedAnnotation Maven / Gradle / Ivy

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/*
 * Copyright 2002-2019 the original author or authors.
 *
 * 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
 *
 *      https://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.springframework.core.annotation;

import java.lang.annotation.Annotation;
import java.lang.reflect.Array;
import java.util.NoSuchElementException;
import java.util.Optional;
import java.util.function.Predicate;

import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

/**
 * Abstract base class for {@link MergedAnnotation} implementations.
 *
 * @author Phillip Webb
 * @author Juergen Hoeller
 * @since 5.2
 * @param  the annotation type
 */
abstract class AbstractMergedAnnotation implements MergedAnnotation {

	@Nullable
	private volatile A synthesizedAnnotation;


	@Override
	public boolean isDirectlyPresent() {
		return isPresent() && getDistance() == 0;
	}

	@Override
	public boolean isMetaPresent() {
		return isPresent() && getDistance() > 0;
	}

	@Override
	public boolean hasNonDefaultValue(String attributeName) {
		return !hasDefaultValue(attributeName);
	}

	@Override
	public byte getByte(String attributeName) {
		return getRequiredAttributeValue(attributeName, Byte.class);
	}

	@Override
	public byte[] getByteArray(String attributeName) {
		return getRequiredAttributeValue(attributeName, byte[].class);
	}

	@Override
	public boolean getBoolean(String attributeName) {
		return getRequiredAttributeValue(attributeName, Boolean.class);
	}

	@Override
	public boolean[] getBooleanArray(String attributeName) {
		return getRequiredAttributeValue(attributeName, boolean[].class);
	}

	@Override
	public char getChar(String attributeName) {
		return getRequiredAttributeValue(attributeName, Character.class);
	}

	@Override
	public char[] getCharArray(String attributeName) {
		return getRequiredAttributeValue(attributeName, char[].class);
	}

	@Override
	public short getShort(String attributeName) {
		return getRequiredAttributeValue(attributeName, Short.class);
	}

	@Override
	public short[] getShortArray(String attributeName) {
		return getRequiredAttributeValue(attributeName, short[].class);
	}

	@Override
	public int getInt(String attributeName) {
		return getRequiredAttributeValue(attributeName, Integer.class);
	}

	@Override
	public int[] getIntArray(String attributeName) {
		return getRequiredAttributeValue(attributeName, int[].class);
	}

	@Override
	public long getLong(String attributeName) {
		return getRequiredAttributeValue(attributeName, Long.class);
	}

	@Override
	public long[] getLongArray(String attributeName) {
		return getRequiredAttributeValue(attributeName, long[].class);
	}

	@Override
	public double getDouble(String attributeName) {
		return getRequiredAttributeValue(attributeName, Double.class);
	}

	@Override
	public double[] getDoubleArray(String attributeName) {
		return getRequiredAttributeValue(attributeName, double[].class);
	}

	@Override
	public float getFloat(String attributeName) {
		return getRequiredAttributeValue(attributeName, Float.class);
	}

	@Override
	public float[] getFloatArray(String attributeName) {
		return getRequiredAttributeValue(attributeName, float[].class);
	}

	@Override
	public String getString(String attributeName) {
		return getRequiredAttributeValue(attributeName, String.class);
	}

	@Override
	public String[] getStringArray(String attributeName) {
		return getRequiredAttributeValue(attributeName, String[].class);
	}

	@Override
	public Class getClass(String attributeName) {
		return getRequiredAttributeValue(attributeName, Class.class);
	}

	@Override
	public Class[] getClassArray(String attributeName) {
		return getRequiredAttributeValue(attributeName, Class[].class);
	}

	@Override
	public > E getEnum(String attributeName, Class type) {
		Assert.notNull(type, "Type must not be null");
		return getRequiredAttributeValue(attributeName, type);
	}

	@Override
	@SuppressWarnings("unchecked")
	public > E[] getEnumArray(String attributeName, Class type) {
		Assert.notNull(type, "Type must not be null");
		Class arrayType = Array.newInstance(type, 0).getClass();
		return (E[]) getRequiredAttributeValue(attributeName, arrayType);
	}

	@Override
	public Optional