com.amazonaws.services.dynamodbv2.xspec.NamedElement Maven / Gradle / Ivy

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The AWS SDK for Java with support for OSGi. The AWS SDK for Java provides Java APIs for building software on AWS' cost-effective, scalable, and reliable infrastructure products. The AWS Java SDK allows developers to code against APIs for all of Amazon's infrastructure web services (Amazon S3, Amazon EC2, Amazon SQS, Amazon Relational Database Service, Amazon AutoScaling, etc).

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/*
 * Copyright 2015-2016 Amazon Technologies, Inc.
 *
 * 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://aws.amazon.com/apache2.0
 *
 * This file 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.amazonaws.services.dynamodbv2.xspec;

import org.apache.http.annotation.Immutable;

@Immutable
final class NamedElement extends PathElement {
    private final String name;

    NamedElement(String name) {
        if (name == null) {
            throw new NullPointerException("element");
        }
        if (name.trim().isEmpty()) {
            throw new IllegalArgumentException("element cannot be empty");
        }
        this.name = name;
    }

    @Override
    public String toString() {
        return name;
    }

    @Override
    public int hashCode() {
        return name.hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (!(obj instanceof NamedElement)) {
            return false;
        }

        return name.equals(((NamedElement) obj).name);
    }

    @Override
    String asNestedPath() {
        return "." + name;
    }

    @Override
    String asToken(SubstitutionContext context) {
        return context.nameTokenFor(name);
    }

    @Override
    String asNestedToken(SubstitutionContext context) {
        return "." + context.nameTokenFor(name);
    }
}