/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
 * See the License for the specific language governing permissions and 
 * limitations under the License.
 */
 
package org.apache.jdo.tck.pc.companyAnnotatedFC;

import javax.jdo.annotations.*;

import java.io.Serializable;
import java.io.ObjectInputStream;
import java.io.IOException;

import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.apache.jdo.tck.pc.company.ICompany;
import org.apache.jdo.tck.pc.company.IDepartment;
import org.apache.jdo.tck.pc.company.IEmployee;

import org.apache.jdo.tck.util.DeepEquality;
import org.apache.jdo.tck.util.EqualityHelper;

/**
 * This class represents a department within a company.
 */
@PersistenceCapable(table="departments")
@Inheritance(strategy=InheritanceStrategy.NEW_TABLE)
@Discriminator(strategy=DiscriminatorStrategy.CLASS_NAME,
        column="DISCRIMINATOR")
@DatastoreIdentity(strategy=IdGeneratorStrategy.IDENTITY, 
        column="DATASTORE_IDENTITY")
public class FCDSDepartment
    implements IDepartment, Serializable, Comparable, Comparator, DeepEquality {

    public static final int RECOMMENDED_NO_OF_EMPS = 2;

    @Column(name="ID")
    private long deptid;
    @Column(name="NAME")
    private String  name;
    @Column(name="COMPANYID")
    private FCDSCompany company;
    @Column(name="EMP_OF_THE_MONTH")
    private FCDSEmployee employeeOfTheMonth;
    @Persistent(mappedBy="department")
    @Element(types=org.apache.jdo.tck.pc.companyAnnotatedFC.FCDSEmployee.class)
    private transient Set employees = new HashSet();
    @Element(types=org.apache.jdo.tck.pc.companyAnnotatedFC.FCDSEmployee.class)
    @Persistent(mappedBy="fundingDept")
    private transient Set fundedEmps = new HashSet();

    /** This is the JDO-required no-args constructor. The TCK relies on
     * this constructor for testing PersistenceManager.newInstance(PCClass).
     */
    public FCDSDepartment() {}

    /**
     * Construct a <code>Department</code> instance.
     * @param deptid The department id.
     * @param name The name of the department.
     */
    public FCDSDepartment(long deptid, String name) {
        this.deptid = deptid;
        this.name = name;
    }

    /**
     * Construct a <code>Department</code> instance.
     * @param deptid The department id.
     * @param name The name of the department.
     * @param company The company that the department is associated with. 
     */
    public FCDSDepartment(long deptid, String name, ICompany company) {
        this.deptid = deptid;
        this.name = name;
        this.company = (FCDSCompany)company;
    }

    /**
     * Construct a <code>Department</code> instance.
     * @param deptid The department id.
     * @param name The name of the department.
     * @param company The company that the department is associated with.
     * @param employeeOfTheMonth The employee of the month the
     * department is associated with.
     */
    public FCDSDepartment(long deptid, String name, ICompany company, 
                      IEmployee employeeOfTheMonth) {
        this.deptid = deptid;
        this.name = name;
        this.company = (FCDSCompany)company;
        this.employeeOfTheMonth = (FCDSEmployee)employeeOfTheMonth;
    }

    /**
     * Set the id associated with this object.
     * @param id the id.
     */
    public void setDeptid(long id) {
        if (this.deptid != 0)
            throw new IllegalStateException("Id is already set.");
        this.deptid = id;
    }

    /**
     * Get the department id.
     * @return The department id.
     */
    public long getDeptid() {
        return deptid;
    }

    /**
     * Get the name of the department.
     * @return The name of the department.
     */
    public String getName() {
        return name;
    }

    /**
     * Set the name of the department.
     * @param name The name to set for the department.
     */
    public void setName(String name) {
        this.name = name;
    }

    /**
     * Get the company associated with the department.
     * @return The company.
     */
    public ICompany getCompany() {
        return company;
    }

    /**
     * Set the company for the department.
     * @param company The company to associate with the department.
     */
    public void setCompany(ICompany company) {
        this.company = (FCDSCompany)company;
    }

    /**
     * Get the employee of the month associated with the department.
     * @return The employee of the month.
     */
    public IEmployee getEmployeeOfTheMonth() {
        return employeeOfTheMonth;
    }

    /**
     * Set the employee of the month for the department.
     * @param employeeOfTheMonth The employee of the month to
     * associate with the department. 
     */
    public void setEmployeeOfTheMonth(IEmployee employeeOfTheMonth) {
        this.employeeOfTheMonth = (FCDSEmployee)employeeOfTheMonth;
    }

    /**
     * Get the employees in the department as an unmodifiable set.
     * @return The set of employees in the department, as an unmodifiable
     * set. 
     */
    public Set getEmployees() {
        return Collections.unmodifiableSet(employees);
    }

    /**
     * Add an employee to the department.
     * @param emp The employee to add to the department.
     */
    public void addEmployee(FCDSEmployee emp) {
        employees.add(emp);
    }

    /**
     * Remove an employee from the department.
     * @param emp The employee to remove from the department.
     */
    public void removeEmployee(FCDSEmployee emp) {
        employees.remove(emp);
    }

    /**
     * Set the employees to be in this department.
     * @param employees The set of employees for this department.
     */
    public void setEmployees(Set employees) {
        // workaround: create a new HashSet, because fostore does not
        // support LinkedHashSet
        this.employees = (employees != null) ? new HashSet(employees) : null;
    }

    /**
     * Get the funded employees in the department as an unmodifiable set.
     * @return The set of funded employees in the department, as an
     * unmodifiable set. 
     */
    public Set getFundedEmps() {
        return Collections.unmodifiableSet(fundedEmps);
    }

    /**
     * Add an employee to the collection of funded employees of this
     * department. 
     * @param emp The employee to add to the department.
     */
    public void addFundedEmp(FCDSEmployee emp) {
        fundedEmps.add(emp);
    }

    /**
     * Remove an employee from collection of funded employees of this
     * department. 
     * @param emp The employee to remove from the department.
     */
    public void removeFundedEmp(FCDSEmployee emp) {
        fundedEmps.remove(emp);
    }

    /**
     * Set the funded employees to be in this department.
     * @param employees The set of funded employees for this department. 
     */
    public void setFundedEmps(Set employees) {
        // workaround: create a new HashSet, because fostore does not
        // support LinkedHashSet
        this.fundedEmps = (fundedEmps != null) ? new HashSet(employees) : null;
    }

    @Override
	public List getMeetingRooms() {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public void setMeetingRooms(List rooms) {
		// TODO Auto-generated method stub
		
	}

	/** Serialization support: initialize transient fields. */
    private void readObject(ObjectInputStream in)
        throws IOException, ClassNotFoundException {
        in.defaultReadObject();
        employees = new HashSet();
        fundedEmps = new HashSet();
    }

    /**
     * 
     * Returns <code>true</code> if all the fields of this instance are
     * deep equal to the coresponding fields of the other FCDSDepartment.
     * 
     * @param other the object with which to compare.
     * @param helper EqualityHelper to keep track of instances that have
     * already been processed.
     * @return <code>true</code> if all the fields are deep equal;
     * <code>false</code> otherwise.
     * @throws ClassCastException if the specified instances' type prevents
     * it from being compared to this instance.
     */
    public boolean deepCompareFields(Object other, 
                                     EqualityHelper helper) {
        FCDSDepartment otherDept = (FCDSDepartment)other;
        String where = "FCDepartment<" + deptid + ">";
        return 
            helper.equals(deptid, otherDept.getDeptid(), where + ".deptid") & 
            helper.equals(name, otherDept.getName(), where + ".name") &
            helper.deepEquals(company, otherDept.getCompany(), where + ".company") &
            helper.deepEquals(employeeOfTheMonth, otherDept.getEmployeeOfTheMonth(), where + ".employeeOfTheMonth") &
            helper.deepEquals(employees, otherDept.getEmployees(), where + ".employees") &
            helper.deepEquals(fundedEmps, otherDept.getFundedEmps(), where + ".fundedEmps");
    }
    
    /**
     * Returns a String representation of a <code>FCDSDepartment</code> object.
     * 
     * @return a String representation of a <code>FCDSDepartment</code> object.
     */
    public String toString() {
        return "FCDepartment(" + getFieldRepr()+ ")";
    }

    /**
     * Returns a String representation of the non-relationship fields.
     * @return a String representation of the non-relationship fields.
     */
    protected String getFieldRepr() {
        StringBuffer rc = new StringBuffer();
        rc.append(deptid);
        rc.append(", name ").append(name);
        return rc.toString();
    }

    /** 
     * Compares this object with the specified object for order. Returns a
     * negative integer, zero, or a positive integer as this object is less
     * than, equal to, or greater than the specified object. 
     * @param o The Object to be compared. 
     * @return a negative integer, zero, or a positive integer as this 
     * object is less than, equal to, or greater than the specified object. 
     * @throws ClassCastException - if the specified object's type prevents
     * it from being compared to this Object. 
     */
    public int compareTo(Object o) {
        return compareTo((FCDSDepartment)o);
    }

    /** 
     * Compare two instances. This is a method in Comparator.
     */
    public int compare(Object o1, Object o2) {
        return compare((FCDSDepartment)o1, (FCDSDepartment)o2);
    }

    /** 
     * Compares this object with the specified Department object for
     * order. Returns a negative integer, zero, or a positive integer as
     * this object is less than, equal to, or greater than the specified
     * object.  
     * @param other The Department object to be compared. 
     * @return a negative integer, zero, or a positive integer as this
     * object is less than, equal to, or greater than the specified
     * Department object. 
     */
    public int compareTo(FCDSDepartment other) {
        return compare(this, other);
    }

    /**
     * Compares its two IDepartment arguments for order. Returns a negative
     * integer, zero, or a positive integer as the first argument is less
     * than, equal to, or greater than the second. 
     * @param o1 the first IDepartment object to be compared. 
     * @param o2 the second IDepartment object to be compared. 
     * @return a negative integer, zero, or a positive integer as the first
     * object is less than, equal to, or greater than the second object. 
     */
    public static int compare(FCDSDepartment o1, FCDSDepartment o2) {
        return EqualityHelper.compare(o1.getDeptid(), o2.getDeptid());
    }
    
    /** 
     * Indicates whether some other object is "equal to" this one.
     * @param obj the object with which to compare.
     * @return <code>true</code> if this object is the same as the obj
     * argument; <code>false</code> otherwise. 
     */
    public boolean equals(Object obj) {
        if (obj instanceof FCDSDepartment) {
            return compareTo((FCDSDepartment)obj) == 0;
        }
        return false;
    }
        
    /**
     * Returns a hash code value for the object. 
     * @return a hash code value for this object.
     */
    public int hashCode() {
        return (int)deptid;
    }

    /**
     * The application identity class associated with the
     * <code>Department</code> class. 
     */
    public static class Oid implements Serializable, Comparable {

        /**
         * This field represents the application identifier field 
         * for the <code>Department</code> class. 
         * It must match in name and type with the field in the
         * <code>Department</code> class. 
         */
        public long deptid;

        /**
         * The required public, no-arg constructor.
         */
        public Oid() { }

        /**
         * A constructor to initialize the identifier field.
         * @param deptid the deptid of the Department.
         */
        public Oid(long deptid) {
            this.deptid = deptid;
        }
        
        public Oid(String s) { deptid = Long.parseLong(justTheId(s)); }

        public String toString() { return this.getClass().getName() + ": "  + deptid;}


        /** */
        public boolean equals(java.lang.Object obj) {
            if( obj==null || !this.getClass().equals(obj.getClass()) )
                return( false );
            Oid o = (Oid) obj;
            if( this.deptid != o.deptid ) return( false );
            return( true );
        }

        /** */
        public int hashCode() {
            return( (int) deptid );
        }
        
        protected static String justTheId(String str) {
            return str.substring(str.indexOf(':') + 1);
        }

        /** */
        public int compareTo(Object obj) {
            // may throw ClassCastException which the user must handle
            Oid other = (Oid) obj;
            if( deptid < other.deptid ) return -1;
            if( deptid > other.deptid ) return 1;
            return 0;
        }

    }

}

