CaselessStringWrapper.java

/*******************************************************************************
 * Copyright (c) 2012-2016 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.everrest.core.util;

/** Caseless wrapper for strings. */
public final class CaselessStringWrapper {
    private final String string;

    private final String caselessString;

    public CaselessStringWrapper(String string) {
        this.string = string;
        this.caselessString = string != null ? string.toLowerCase() : null;
    }

    /**
     * Get original string value.
     *
     * @return original string
     */
    public String getString() {
        return string;
    }


    public String toString() {
        return string == null ? "null" : string;
    }


    @Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (obj.getClass() != getClass()) {
            return false;
        }
        CaselessStringWrapper other = (CaselessStringWrapper)obj;
        return caselessString == null && other.caselessString == null
               || caselessString != null && caselessString.equals(other.caselessString);
    }


    @Override
    public int hashCode() {
        return caselessString == null ? 0 : caselessString.hashCode();
    }
}