DVL1 dishevelled.org

ClassDescription foo = new ClassDescription("example", "Foo");
ClassDescription bar = new ClassDescription("example", "Bar");
foo.attribute("String", "Name", Cardinality.ZeroToOne);
bar.attribute("Integer", "Value", Cardinality.StrictlyOne);
foo.associate(bar, Cardinality.ZeroToOne);
bar.associate(foo, Cardinality.ZeroToMany, false, true, false, false);
Codegen.generateSource(foo, Style.Immutable);
Codegen.generateSource(bar, Style.RichlyMutable);

package example;

/**
 * Foo.
 */
public final class Foo
{
    /** The name for this foo. */
    private final String name;

    /** The bar for this foo. */
    private final Bar bar;


    /**
     * Create a new foo from the specified parameters.
     *
     * @param name name for this foo
     * @param bar bar for this foo
     */
    public Foo(final String name,
               final Bar bar)
    {
        this.name = name;
        this.bar = bar;
    }


    /**
     * Return the name for this foo.
     * The name may be null.
     *
     * @return the name for this foo
     */
    public String getName()
    {
        return name;
    }

    /**
     * Return the bar for this foo.
     * The bar may be null.
     *
     * @return the bar for this foo
     */
    public Bar getBar()
    {
        return bar;
    }
}

package example;

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

/**
 * Bar.
 */
public class Bar
{
    /** The value for this bar. */
    private Integer value;

    /** The set of foos for this bar. */
    private final Set<Foo> foos;


    /**
     * Create a new bar from the specified required parameters.
     *
     * @param value value for this bar, must not be null
     */
    public Bar(final Integer value)
    {
        if (value == null)
        {
            throw new IllegalArgumentException("value must not be null");
        }
        this.value = value;
        this.foos = new HashSet<Foo>();
    }

    /**
     * Create a new bar from the specified parameters.
     *
     * <p>The foos in <code>foos</code> are copied defensively
     * into this class.</p>
     *
     * @param value value for this bar, must not be null
     * @param foos set of foos, must not be null
     */
    public Bar(final Integer value,
               final Set<Foo> foos)
    {
        if (value == null)
        {
            throw new IllegalArgumentException("value must not be null");
        }
        if (foos == null)
        {
            throw new IllegalArgumentException("foos must not be null");
        }
        this.value = value;
        this.foos = new HashSet<Foo>(foos);
    }


    /**
     * Return the value for this bar.
     * The value will not be null.
     *
     * @return the value for this bar
     */
    public final Integer getValue()
    {
        return value;
    }

    /**
     * Set the value for this bar to <code>value</code>.
     *
     * @param value value for this bar, must not be null
     */
    public final void setValue(final Integer value)
    {
        if (value == null)
        {
            throw new IllegalArgumentException("value must not be null");
        }
        this.value = value;
    }

    /**
     * Return an unmodifiable set of foos
     * for this bar.  The returned set may be
     * empty but will not be null.
     *
     * @return an unmodifiable set of foos
     *    for this bar
     */
    public final Set<Foo> getFoos()
    {
        return Collections.unmodifiableSet(foos);
    }

    /**
     * Add the specified foo to the set of
     * foos for this bar.  An exception
     * may be thrown if the underlying set prevents
     * <code>foo</code> from being added.
     *
     * @param foo foo to add
     */
    public final void addFoo(final Foo foo)
    {
        foos.add(foo);
    }

    /**
     * Add all of the foos in the specified collection of foos
     * to the set of foos for this bar.
     * An exception may be thrown if the underlying
     * set prevents any of the foos in
     * <code>foos</code> from being added.
     *
     * @param foos collection of foos to add
     */
    public final void addAllFoos(final Collection<? extends Foo> foos)
    {
        this.foos.addAll(foos);
    }

    /**
     * Remove the specified foo from the set of
     * foos for this bar.  An exception
     * may be thrown if the underlying set prevents
     * <code>foo</code> from being removed.
     *
     * @param foo foo to remove
     */
    public final void removeFoo(final Foo foo)
    {
        foos.remove(foo);
    }

    /**
     * Remove all of the foos in the set of 
     * foos for this bar that are also contained in the
     * specified collection of foos.  An exception
     * may be thrown if the underlying set prevents any
     * of the foos in <code>foos</code> from being removed.
     *
     * @param foos collection of foos to remove
     */
    public final void removeAllFoos(final Collection<? extends Foo> foos)
    {
        this.foos.removeAll(foos);
    }

    /**
     * Retain only the foos in the set of
     * foos for this bar that are contained in the specified
     * collection of foos.  An exception may be thrown
     * if the underlying set prevents any of the foos
     * not in <code>foos</code> from being removed.
     *
     * @param foos collection of foos to retain
     */
    public final void retainAllFoos(final Collection<? extends Foo> foos)
    {
        this.foos.retainAll(foos);
    }

    /**
     * Remove all of the foos in the set of
     * foos for this bar.  An exception may
     * be thrown if the underlying set prevents any of the
     * foos from being removed.
     */
    public final void clearFoos()
    {
        foos.clear();
    }

    /** {@inheritDoc} */
    public final boolean equals(final Object o)
    {
        if (o == this)
        {
            return true;
        }
        if (!(o instanceof Bar))
        {
            return false;
        }

        Bar bar = (Bar) o;

        return (true
            && (value.equals(bar.getValue()))
            && (foos.equals(bar.getFoos()))
        );
    }

    /** {@inheritDoc} */
    public final int hashCode()
    {
        int result = 17;
        result = 37 * result + ((value == null) ? 0 : value.hashCode());
        result = 37 * result + foos.hashCode();
        return result;
    }
}