gsn.utils.KeyValueImp.java Source code

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Here is the source code for gsn.utils.KeyValueImp.java

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/**
* Global Sensor Networks (GSN) Source Code
* Copyright (c) 2006-2014, Ecole Polytechnique Federale de Lausanne (EPFL)
* 
* This file is part of GSN.
* 
* GSN is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* 
* GSN 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 for more details.
* 
* You should have received a copy of the GNU General Public License
* along with GSN.  If not, see <http://www.gnu.org/licenses/>.
* 
* File: src/gsn/utils/KeyValueImp.java
*
* @author Timotee Maret
* @author Ali Salehi
*
*/

package gsn.utils;

import java.io.Serializable;

import org.apache.commons.collections.KeyValue;
import org.slf4j.LoggerFactory;
import org.slf4j.Logger;

/**
 * The <I> Predicate </I> class represents mapping between a key and a value.
 * Two predicates are the same if they have the same name and value. This class
 * is used for Abstract Addressing and Options.
 */
public class KeyValueImp implements KeyValue, Serializable {

    private static final long serialVersionUID = 5739537343169906104L;

    private transient final Logger logger = LoggerFactory.getLogger(KeyValueImp.class);

    private String key;

    private String value;

    public KeyValueImp() {

    }

    public KeyValueImp(String key, String value) {
        this.key = key;
        this.value = value;
    }

    public void setKey(String key) {
        this.key = key;
    }

    public void setValue(String value) {
        this.value = value;
    }

    public boolean equals(Object obj) {
        if (obj == null || !(obj instanceof KeyValueImp)) {
            return false;
        }
        KeyValueImp input = (KeyValueImp) obj;
        return input.getKey().equalsIgnoreCase(getKey()) && input.getValue().equalsIgnoreCase(getValue());
    }

    /**
     * Converts the value inside the predicate object to boolean or returns
     * false.
     * 
     * @return The boolean representation of the value or false if the conversion
     * fails.
     */
    public boolean valueInBoolean() {
        boolean result = false;
        try {
            result = Boolean.parseBoolean(getValue());
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
        }
        return result;
    }

    /**
     * Converts the value inside the predicate object to integer or returns 0.
     * 
     * @return The integer representation of the value or 0 plus contents of
     * stack trace if the conversion fails.
     */
    public int valueInInteger() {
        int result = 0;
        try {
            result = Integer.parseInt(getValue());
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
        }
        return result;
    }

    public int hashCode() {
        return toString().hashCode();
    }

    public String toString() {
        StringBuffer result = new StringBuffer();
        result.append("Predicate ( Key = ").append(key).append(", Value = ").append(value).append(" )\n");
        return result.toString();
    }

    public String getKey() {
        return this.key;
    }

    public String getValue() {
        return this.value;
    }

}