com.tinkerpop.gremlin.groovy.util.MetaRegistryUtil.groovy Maven / Gradle / Ivy

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package com.tinkerpop.gremlin.groovy.util

import org.codehaus.groovy.runtime.InvokerHelper

/**
 * Helper functions for working with the Groovy {@code MetaRegistry}.
 *
 * @author Stephen Mallette (http://stephen.genoprime.com)
 */
class MetaRegistryUtil {

    /**
     * Clears the {@code MetaRegistry} of any meta-programming registration.  In other words, if dynamic methods
     * were added to a class, then this method will clear those methods from the supplied classes.
     */
    public static void clearRegistry(final Set toClear) {
        def metaRegistry = InvokerHelper.getMetaRegistry()

        // this call returns interfaces and removes meta clases from there.  not sure why it doesn't return
        // concrete classes that are in the registry, but such is the nature of groovy
        def metaClassesToRemove = metaRegistry.iterator()
        metaClassesToRemove.collect { (Class) it.theClass }.each { metaRegistry.removeMetaClass(it) }

        // since we don't get concrete classes those must come from the GraphProvider.
        toClear.each { metaRegistry.removeMetaClass(it) }
    }
}