com.webauthn4j.data.extension.SingleValueExtensionBase Maven / Gradle / Ivy

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WebAuthn4J Core library

There is a newer version: 0.9.2.RELEASE

/*
 * Copyright 2018 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 com.webauthn4j.data.extension;

import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.util.Objects;

public abstract class SingleValueExtensionBase {

    private final T value;

    protected SingleValueExtensionBase(@NotNull T value) {
        this.value = value;
    }

    public T getValue(@NotNull String key) {
        if (!key.equals(getIdentifier())) {
            throw new IllegalArgumentException(String.format("%s is the only valid key.", getIdentifier()));
        }
        return value;
    }

    protected abstract @NotNull String getIdentifier();

    public @NotNull T getValue() {
        return value;
    }

    @Override
    public boolean equals(@Nullable Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        SingleValueExtensionBase that = (SingleValueExtensionBase) o;
        return Objects.equals(value, that.value);
    }

    @Override
    public int hashCode() {
        return Objects.hash(value);
    }

    @Override
    public String toString() {
        return value.toString();
    }
}