Role.java

package de.skuzzle.polly.core.internal.roles;

import java.io.Serializable;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
import javax.persistence.Transient;



@Entity
@NamedQueries({
    @NamedQuery(name = "ALL_ROLES", query = "SELECT r FROM Role r"),
    @NamedQuery(name = "ROLE_BY_NAME", query = "SELECT r FROM Role r WHERE r.name = ?1")
})
public class Role implements Serializable {

    private static final long serialVersionUID = 1L;

    public final static String ROLE_BY_NAME = "ROLE_BY_NAME"; 
    
    public final static String ALL_ROLES = "ALL_ROLES";

    @Id@GeneratedValue(strategy=GenerationType.TABLE)
    private int id;
    
    private String name;
    
    @OneToMany
    private Set<Permission> permissions;
    
    @Transient
    private Set<String> permissionNames;
    
    @Transient
    private boolean stale;
    
    
    public Role() {
        this.permissions = new HashSet<Permission>();
    }
    
    
    
    public Role(String name) {
        this(name, new HashSet<Permission>());
    }
    
    
    
    public Role(String name, Set<Permission> permissions) {
        this.name = name;
        this.permissions = permissions;
    }
    
    
    
    
    public int getId() {
        return this.id;
    }
    
    
    
    
    public String getName() {
        return this.name;
    }
    
    
    
    public Set<Permission> getPermissions() {
        return this.permissions;
    }
    
    
    
    
    public Set<String> getPermissionNames() {
        if (this.permissionNames == null || this.stale) {
            this.permissionNames = new HashSet<String>(this.permissions.size());
            for (Permission perm : this.permissions) {
                this.permissionNames.add(perm.getName());
            }
            this.permissionNames = Collections.unmodifiableSet(this.permissionNames);
            this.stale = false;
        }
        return this.permissionNames;
    }
    
    
    
    public void setStale(boolean stale) {
        this.stale = stale;
    }



    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result
            + ((this.name == null) ? 0 : this.name.hashCode());
        return result;
    }



    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (!(obj instanceof Role)) {
            return false;
        }
        Role other = (Role) obj;
        if (this.name == null) {
            if (other.name != null) {
                return false;
            }
        } else if (!this.name.equals(other.name)) {
            return false;
        }
        return true;
    }
    
    
    
    @Override
    public String toString() {
        return "(" + this.id + ") " + this.name;
    }
}