ConfigurationParserFactory.java

package org.dcache.gplazma.configuration.parser;


/**
 * getInstance of ConfigurationParserFactory
 * @author timur
 */
public abstract class ConfigurationParserFactory
{
    private static final String DEFAULT_PROPERTY_NAME =
            "org.dcache.gplazma.configuration.parser.ConfigurationParserFactory";
    private static final String DEFAULT_FACTORY =
            "org.dcache.gplazma.configuration.parser.PAMStyleConfigurationParserFactory";
    /**
     *
     * @return an instance of the
     * ConfigurationParserFactory,
     * by default it is
     * org.dcache.gplazma.configuration.parser.DefaultConfigurationParserFactory
     * but this behavior can be overridden with definition of the system property
     * "org.dcache.gplazma.configuration.parser.ConfigurationParserFactory"
     */
    public static ConfigurationParserFactory getInstance()
            throws FactoryConfigurationException
    {
        try {
            return (ConfigurationParserFactory) FactoryFinder.find(DEFAULT_PROPERTY_NAME, DEFAULT_FACTORY);
        } catch (ClassNotFoundException | IllegalAccessException | InstantiationException cnfe) {
            throw new FactoryConfigurationException("configuration error", cnfe);
        }
    }


    /**
     *
     * @param factoryClassName
     * @return an instanc of the ConfigurationParserFactory specified by the
     *  factoryClassName
     */
    public static ConfigurationParserFactory getInstance(String factoryClassName)
            throws FactoryConfigurationException
    {
        try {
            return (ConfigurationParserFactory) FactoryFinder.newInstance(factoryClassName);
        } catch (ClassNotFoundException | IllegalAccessException | InstantiationException cnfe) {
            throw new FactoryConfigurationException("configuration error", cnfe);
        }
    }

    public abstract ConfigurationParser newConfigurationParser();
}