net.sf.qualitycheck.immutableobject.domain.Import Maven / Gradle / Ivy

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The goal of Quality-Immutable-Object is to provide a small Java library that generates automatically an immutable object class and corresponding builder based on an Java interface (only with accessor methods).

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/*******************************************************************************
 * Copyright 2013 André Rouél and Dominik Seichter
 * 
 * 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 net.sf.qualitycheck.immutableobject.domain;

import javax.annotation.Nonnull;
import javax.annotation.concurrent.Immutable;

import net.sf.qualitycheck.Check;

/**
 * Represents an import statement of a class
 */
@Immutable
public final class Import {

	/**
	 * Prefix when written in class file
	 */
	private static final String PREFIX = "import";

	private static Type filterGenericDeclaration(final Type type) {
		return type.getGenericDeclaration() == GenericDeclaration.UNDEFINED ? type : new Type(type.getPackage(), type.getName(),
				GenericDeclaration.UNDEFINED);
	}

	public static Import of(@Nonnull final Annotation annotation) {
		Check.notNull(annotation, "annotation");
		return of(annotation.getType());
	}

	public static Import of(@Nonnull final Attribute attribute) {
		Check.notNull(attribute, "attribute");
		return of(attribute.getType());
	}

	public static Import of(@Nonnull final Class type) {
		Check.notNull(type, "type");
		return of(Type.of(type));
	}

	public static Import of(@Nonnull final Field field) {
		Check.notNull(field, "field");
		return of(field.getType());
	}

	public static Import of(@Nonnull final Interface interfaceType) {
		Check.notNull(interfaceType, "interfaceType");
		return of(interfaceType.getType());
	}

	public static Import of(@Nonnull final String type) {
		return Import.of(new Type(Check.notNull(type, "type")));
	}

	public static Import of(@Nonnull final Type type) {
		return new Import(Check.notNull(type, "type"));
	}

	@Nonnull
	private final Type type;

	private Import(@Nonnull final Type type) {
		this.type = filterGenericDeclaration(Check.notNull(type, "type"));
	}

	@Override
	public boolean equals(final Object obj) {
		if (this == obj) {
			return true;
		}
		if (obj == null) {
			return false;
		}
		if (getClass() != obj.getClass()) {
			return false;
		}
		final Import other = (Import) obj;
		if (!type.equals(other.type)) {
			return false;
		}
		return true;
	}

	public Type getType() {
		return type;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + type.hashCode();
		return result;
	}

	@Override
	public String toString() {
		return PREFIX + Characters.SPACE + type.toString() + Characters.SEMICOLON;
	}

}