/**
 * 
 */
package org.gcube.accounting.analytics;

/**
 * @author Luca Frosini (ISTI - CNR)
 *
 */
public class Filter implements Comparable<Filter> {

	protected String key;
	protected String value;
	
	/**
	 * @param key the key to filter
	 * @param value the value fo the key to filter
	 */
	public Filter(String key, String value) {
		this.key = key;
		this.value = value;
	}

	/**
	 * @return the key
	 */
	public String getKey() {
		return key;
	}

	/**
	 * @param key the key to set
	 */
	public void setKey(String key) {
		this.key = key;
	}

	/**
	 * @return the value
	 */
	public String getValue() {
		return value;
	}

	/**
	 * @param value the value to set
	 */
	public void setValue(String value) {
		this.value = value;
	}
	
	@Override
	public String toString(){
		return String.format("{ \"%s\" : \"%s\" }", key, value);
	}

	/** {@inheritDoc} */
	@Override
	public int compareTo(Filter filter) {
		int compareResult = this.key.compareTo(filter.key);
		if(compareResult == 0){
			compareResult = this.value.compareTo(filter.value);
		}
		return compareResult;
	}
	
	
	/** {@inheritDoc} */
	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((key == null) ? 0 : key.hashCode());
		result = prime * result + ((value == null) ? 0 : value.hashCode());
		return result;
	}

	/** {@inheritDoc} */
	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		Filter other = (Filter) obj;
		if (key == null) {
			if (other.key != null)
				return false;
		} else if (!key.equals(other.key))
			return false;
		if (value == null) {
			if (other.value != null)
				return false;
		} else if (!value.equals(other.value))
			return false;
		return true;
	}
	
}