/
ImmutableSubjectIssuer.java
executable file
·84 lines (69 loc) · 2.27 KB
/
ImmutableSubjectIssuer.java
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/*
* Copyright (c) 2017 Bosch Software Innovations GmbH.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/org/documents/epl-2.0/index.php
*
* Contributors:
* Bosch Software Innovations GmbH - initial contribution
*/
package org.eclipse.ditto.model.policies;
import static org.eclipse.ditto.model.base.common.ConditionChecker.checkNotNull;
import java.util.Objects;
import javax.annotation.Nonnull;
import javax.annotation.concurrent.Immutable;
/**
* An immutable implementation of {@link SubjectIssuer}.
*/
@Immutable
final class ImmutableSubjectIssuer implements SubjectIssuer {
private final String subjectIssuer;
private ImmutableSubjectIssuer(final String subjectIssuer) {
this.subjectIssuer = subjectIssuer;
}
/**
* Returns a new SubjectIssuer based on the provided string.
*
* @param subjectIssuerValue the character sequence forming the SubjectType's value.
* @return a new SubjectIssuer.
* @throws NullPointerException if {@code subjectIssuerValue} is {@code null}.
*/
public static SubjectIssuer of(final CharSequence subjectIssuerValue) {
checkNotNull(subjectIssuerValue, "subjectIssuerValue");
return new ImmutableSubjectIssuer(subjectIssuerValue.toString());
}
@Override
public int length() {
return toString().length();
}
@Override
public char charAt(final int index) {
return toString().charAt(index);
}
@Override
public CharSequence subSequence(final int start, final int end) {
return toString().subSequence(start, end);
}
@Override
public boolean equals(final Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
final ImmutableSubjectIssuer that = (ImmutableSubjectIssuer) o;
return Objects.equals(subjectIssuer, that.subjectIssuer);
}
@Override
public int hashCode() {
return Objects.hash(subjectIssuer);
}
@Override
@Nonnull
public String toString() {
return subjectIssuer;
}
}