Criteria.java

 /*
  * RHQ Management Platform
  * Copyright (C) 2005-2008 Red Hat, Inc.
  * All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License, version 2, as
  * published by the Free Software Foundation, and/or the GNU Lesser
  * General Public License, version 2.1, also as published by the Free
  * Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  * GNU General Public License and the GNU Lesser General Public License
  * for more details.
  *
  * You should have received a copy of the GNU General Public License
  * and the GNU Lesser General Public License along with this program;
  * if not, write to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
package org.rhq.core.system.pquery;

/**
 * Represents a single criteria in a process info query string. A <i>criteria</i> consists of a left and right hand side
 * of an equals sign, with the left side consisting of the <i>conditional</i> and the right hand side being the <i>
 * value</i>.
 *
 * @author John Mazzitelli
 */
class Criteria {
    private final Conditional conditional;
    private final String value;

    Criteria(String criteria) {
        String[] tokens = criteria.split("=", 2);

        if (tokens.length != 2) {
            throw new IllegalArgumentException("Criteria needs a conditional and a value: " + criteria);
        }

        conditional = new Conditional(tokens[0]);
        value = tokens[1];

        return;
    }

    public Conditional getConditional() {
        return conditional;
    }

    public String getValue() {
        return value;
    }

    public String toString() {
        return conditional + "=" + value;
    }
}