140 lines
2.9 KiB
Java
140 lines
2.9 KiB
Java
package org.gcube.common.security;
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/**
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* A object model of a scope.
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*
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* @author Fabio Simeoni
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*
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*/
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public class ContextBean {
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/**
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* Scope separators used in linear syntax.
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*/
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protected static String separator = "/";
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/**
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* Scope types *
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*/
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public static enum Type implements Comparable<Type> {VRE,VO,INFRASTRUCTURE}
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/**
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* The name of the scope.
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*/
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private String name;
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/**
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* The type of the scope.
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*/
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private Type type;
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/**
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* The enclosing scope, if any.
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*/
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private ContextBean enclosingScope;
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/**
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* Returns the name of the scope.
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* @return the name
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*/
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public String name() {
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return name;
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}
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/**
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* Returns <code>true</code> if the scope has a given {@link Type}.
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* @param type the type
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* @return <code>true</code> if the scope has the given type, <code>false</code> otherwise
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*/
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public boolean is(Type type) {
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return this.type.equals(type);
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}
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/**
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* Returns the {@link Type} of the scope.
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* @return the type
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*/
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public Type type() {
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return type;
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}
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/**
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* Returns the enclosing scope, if any.
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* @return the enclosing scope, or <code>null</code> if the scope is top-level
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*/
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public ContextBean enclosingScope() {
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return enclosingScope;
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}
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public ContextBean(String scope) throws IllegalArgumentException {
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String[] components=scope.split(separator);
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if (components.length<2 || components.length>4)
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throw new IllegalArgumentException("scope "+scope+" is malformed");
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if(components.length>3) {
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this.name=components[3];
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this.enclosingScope = new ContextBean(separator+components[1]+separator+components[2]);
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this.type=Type.VRE;
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}
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else if (components.length>2) {
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this.name=components[2];
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this.enclosingScope=new ContextBean(separator+components[1]);
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this.type=Type.VO;
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}
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else {
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this.name=components[1];
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this.type=Type.INFRASTRUCTURE;
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}
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}
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/**
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* Returns the linear expression of the scope.
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*/
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public String toString() {
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return is(Type.INFRASTRUCTURE)?separator+name():
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enclosingScope().toString()+separator+name();
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}
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@Override
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public int hashCode() {
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final int prime = 31;
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int result = 1;
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result = prime * result + ((enclosingScope == null) ? 0 : enclosingScope.hashCode());
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result = prime * result + ((name == null) ? 0 : name.hashCode());
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result = prime * result + ((type == null) ? 0 : type.hashCode());
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return result;
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}
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@Override
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public boolean equals(Object obj) {
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if (this == obj)
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return true;
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if (obj == null)
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return false;
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if (getClass() != obj.getClass())
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return false;
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ContextBean other = (ContextBean) obj;
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if (enclosingScope == null) {
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if (other.enclosingScope != null)
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return false;
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} else if (!enclosingScope.equals(other.enclosingScope))
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return false;
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if (name == null) {
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if (other.name != null)
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return false;
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} else if (!name.equals(other.name))
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return false;
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if (type != other.type)
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return false;
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return true;
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}
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}
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