org.unidal.lookup.ContainerHolder Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of foundation-service Show documentation

The newest version!

package org.unidal.lookup;

import java.util.List;
import java.util.Map;

import org.unidal.lookup.extension.Contextualizable;

public abstract class ContainerHolder implements Contextualizable {
	private PlexusContainer m_container;

	public void contextualize(Map context) {
		m_container = (PlexusContainer) context.get("plexus");
	}

	protected PlexusContainer getContainer() {
		return m_container;
	}

	protected  boolean hasComponent(Class role) {
		return hasComponent(role, null);
	}

	protected  boolean hasComponent(Class role, String roleHint) {
		return getContainer().hasComponent(role, roleHint);
	}

	protected  T lookup(Class role) throws LookupException {
		return lookup(role, null);
	}

	protected  T lookup(Class role, String roleHint) throws LookupException {
		try {
			return (T) getContainer().lookup(role, roleHint == null ? "default" : roleHint);
		} catch (ComponentLookupException e) {
			String key = role.getName() + ":" + (roleHint == null ? "default" : roleHint);

			throw new LookupException("Unable to lookup component(" + key + ").", e);
		}
	}

	protected  List lookupList(Class role) throws LookupException {
		try {
			return (List) getContainer().lookupList(role);
		} catch (ComponentLookupException e) {
			String key = role.getName();

			throw new LookupException("Unable to lookup component list(" + key + ").", e);
		}
	}

	protected  Map lookupMap(Class role) throws LookupException {
		try {
			return (Map) getContainer().lookupMap(role);
		} catch (ComponentLookupException e) {
			String key = role.getName();

			throw new LookupException("Unable to lookup component map(" + key + ").", e);
		}
	}

	protected void release(Object component) throws LookupException {
		if (component != null) {
			getContainer().release(component);
		}
	}
}