Examples with ClosureInvokingMethod groovy.lang.ClosureInvokingMethod used on opensource projects

Example 1 with ClosureInvokingMethod

use of groovy.lang.ClosureInvokingMethod in project grails-core by grails.

the class GrailsMetaClassUtils method copyExpandoMetaClass.

/**
     * Copies the ExpandoMetaClass dynamic methods and properties from one Class to another.
     *
     * @param fromClass The source class
     * @param toClass  The destination class
     * @param removeSource Whether to remove the source class after completion. True if yes
     */
@SuppressWarnings({ "unchecked", "rawtypes" })
public static void copyExpandoMetaClass(Class<?> fromClass, Class<?> toClass, boolean removeSource) {
    MetaClassRegistry registry = getRegistry();
    MetaClass oldMetaClass = registry.getMetaClass(fromClass);
    AdaptingMetaClass adapter = null;
    ExpandoMetaClass emc;
    if (oldMetaClass instanceof AdaptingMetaClass) {
        adapter = ((AdaptingMetaClass) oldMetaClass);
        emc = (ExpandoMetaClass) adapter.getAdaptee();
        if (LOG.isDebugEnabled()) {
            LOG.debug("Obtained adapted MetaClass [" + emc + "] from AdapterMetaClass instance [" + adapter + "]");
        }
        if (removeSource) {
            registry.removeMetaClass(fromClass);
        }
    } else {
        emc = (ExpandoMetaClass) oldMetaClass;
        if (LOG.isDebugEnabled()) {
            LOG.debug("No adapter MetaClass found, using original [" + emc + "]");
        }
    }
    ExpandoMetaClass replacement = new ExpandoMetaClass(toClass, true, true);
    for (Object obj : emc.getExpandoMethods()) {
        if (obj instanceof ClosureInvokingMethod) {
            ClosureInvokingMethod cim = (ClosureInvokingMethod) obj;
            Closure callable = cim.getClosure();
            if (!cim.isStatic()) {
                replacement.setProperty(cim.getName(), callable);
            } else {
                ((GroovyObject) replacement.getProperty(ExpandoMetaClass.STATIC_QUALIFIER)).setProperty(cim.getName(), callable);
            }
        }
    }
    for (Object o : emc.getExpandoProperties()) {
        if (o instanceof ThreadManagedMetaBeanProperty) {
            ThreadManagedMetaBeanProperty mbp = (ThreadManagedMetaBeanProperty) o;
            replacement.setProperty(mbp.getName(), mbp.getInitialValue());
        }
    }
    replacement.initialize();
    if (adapter == null) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Adding MetaClass for class [" + toClass + "] MetaClass [" + replacement + "]");
        }
        registry.setMetaClass(toClass, replacement);
    } else {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Adding MetaClass for class [" + toClass + "] MetaClass [" + replacement + "] with adapter [" + adapter + "]");
        }
        try {
            Constructor c = adapter.getClass().getConstructor(new Class[] { MetaClass.class });
            MetaClass newAdapter = (MetaClass) BeanUtils.instantiateClass(c, new Object[] { replacement });
            registry.setMetaClass(toClass, newAdapter);
        } catch (NoSuchMethodException e) {
            if (LOG.isDebugEnabled()) {
                LOG.debug("Exception thrown constructing new MetaClass adapter when reloading: " + e.getMessage(), e);
            }
        }
    }
}