public void begin()

in commons-digester3-core/src/main/java/org/apache/commons/digester3/ObjectCreateRule.java [290:350]
55 lines of code
10 McCabe index (conditional complexity)

    public void begin( final String namespace, final String name, final Attributes attributes )
        throws Exception
    {
        Class<?> clazz = this.clazz;

        if ( clazz == null )
        {
            // Identify the name of the class to instantiate
            String realClassName = className;
            if ( attributeName != null )
            {
                final String value = attributes.getValue( attributeName );
                if ( value != null )
                {
                    realClassName = value;
                }
            }
            if ( getDigester().getLogger().isDebugEnabled() )
            {
                getDigester().getLogger().debug( format( "[ObjectCreateRule]{%s} New '%s'",
                                                         getDigester().getMatch(),
                                                         realClassName ) );
            }

            // Instantiate the new object and push it on the context stack
            clazz = getDigester().getClassLoader().loadClass( realClassName );
        }
        Object instance;
        if ( constructorArgumentTypes == null || constructorArgumentTypes.length == 0 )
        {
            if ( getDigester().getLogger().isDebugEnabled() )
            {
                getDigester()
                    .getLogger()
                    .debug( format( "[ObjectCreateRule]{%s} New '%s' using default empty constructor",
                                    getDigester().getMatch(),
                                    clazz.getName() ) );
            }

            instance = clazz.newInstance();
        }
        else
        {
            if ( proxyManager == null )
            {
                final Constructor<?> constructor = getAccessibleConstructor( clazz, constructorArgumentTypes );

                if ( constructor == null )
                {
                    throw new SAXException(
                                   format( "[ObjectCreateRule]{%s} Class '%s' does not have a constructor with types %s",
                                           getDigester().getMatch(),
                                           clazz.getName(),
                                           Arrays.toString( constructorArgumentTypes ) ) );
                }
                proxyManager = new ProxyManager( clazz, constructor, defaultConstructorArguments, getDigester() );
            }
            instance = proxyManager.createProxy();
        }
        getDigester().push( instance );
    }