package org.springframework.roo.project;
import org.apache.commons.lang3.Validate;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.w3c.dom.Element;
/**
* Simplified immutable representation of a property.
*
* @author Alan Stewart
* @since 1.1
*/
public class Property implements Comparable<Property> {
private final String name;
private final String value;
/**
* Convenience constructor for creating a property instance from a XML
* Element
*
* @param element containing the property definition (required)
*/
public Property(final Element element) {
Validate.notNull(element, "Element required");
name = element.getNodeName();
value = element.getTextContent();
}
/**
* Convenience constructor creating a property instance
*
* @param name the property name (required)
*/
public Property(final String name) {
this.name = name;
value = "";
}
/**
* Convenience constructor creating a property instance
*
* @param name the property name (required)
* @param value the property value (required)
*/
public Property(final String name, final String value) {
Validate.notBlank(name, "Name required");
Validate.notNull(value, "Value required");
this.name = name;
this.value = value;
}
public int compareTo(final Property o) {
if (o == null) {
throw new NullPointerException();
}
int result = name.compareTo(o.name);
if (result == 0) {
result = value.compareTo(o.value);
}
return result;
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final Property other = (Property) obj;
if (name == null) {
if (other.name != null) {
return false;
}
}
else if (!name.equals(other.name)) {
return false;
}
if (value == null) {
if (other.value != null) {
return false;
}
}
else if (!value.equals(other.value)) {
return false;
}
return true;
}
/**
* The name of a property
*
* @return the name of the property (never null)
*/
public String getName() {
return name;
}
/**
* The value of a property
*
* @return the value
*/
public String getValue() {
return value;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + (name == null ? 0 : name.hashCode());
result = prime * result + (value == null ? 0 : value.hashCode());
return result;
}
@Override
public String toString() {
final ToStringBuilder builder = new ToStringBuilder(this);
builder.append("name", name);
builder.append("value", value);
return builder.toString();
}
}