adfpersonalizationcontext.java

esri的ArcGIS Server超级学习模板程序（for java）

package com.esri.solutions.jitk.common.personalization;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;

import com.esri.adf.web.data.WebContext;
import com.esri.adf.web.data.WebContextInitialize;
import com.esri.solutions.jitk.personalization.PersonalizationException;
import com.esri.solutions.jitk.personalization.data.IMapComposition;
import com.esri.solutions.jitk.personalization.data.IPersonalizationData;
import com.esri.solutions.jitk.personalization.data.IPersonalizationDataFactory;
import com.esri.solutions.jitk.personalization.data.IUserFactory;
import com.esri.solutions.jitk.personalization.data.IUserId;
import com.esri.solutions.jitk.personalization.data.beans.v1.PreferenceSettingsType;

public class ADFPersonalizationContext implements IPersonalizationContext, WebContextInitialize {

	public static final String CURRENT_MAP_COMPOSITION_KEY = "com.esri.solutions.jitk.MapComposition";
	private static final Logger LOG = LogManager.getLogger(ADFPersonalizationContext.class);
	
	private IPersonalizationDataFactory m_dataFactory;
	private IUserId m_userId;
	private Map <String, Object> m_attributes;
	private WebContext m_context;
	private IPersonalizationData m_data;
	private IUserFactory m_userFactory;
	private DefaultPreferenceSettingsLoader m_defaultPrefLoader;
	
	public ADFPersonalizationContext () {
		m_attributes = new HashMap<String, Object>();
	}
	
	/*
	 * (non-Javadoc)
	 * @see com.esri.solutions.jitk.common.personalization.IPersonalizationContext#getData()
	 */
	public IPersonalizationData getData() throws PersonalizationException {
		if (m_data == null) {
			m_data = m_dataFactory.create(m_userId);
		}
		
		return m_data;
	}

	/*
	 * (non-Javadoc)
	 * @see com.esri.solutions.jitk.common.personalization.IPersonalizationContext#getAttribute(java.lang.String)
	 */
	public Object getAttribute(String key) {
		if (key == null) {
			throw new NullPointerException();
		}
		return m_attributes.get(key);
	}

	/*
	 * (non-Javadoc)
	 * @see com.esri.solutions.jitk.common.personalization.IPersonalizationContext#getAttributes()
	 */
	public Map<String, Object> getAttributes() {
		return m_attributes;
	}

	/*
	 * (non-Javadoc)
	 * @see com.esri.solutions.jitk.common.personalization.IPersonalizationContext#setAttribute(java.lang.String, java.lang.Object)
	 */
	public void setAttribute(String key, Object value) {
		if (key == null) {
			throw new NullPointerException();
		}
		m_attributes.put(key, value);
		
	}

	/*
	 * (non-Javadoc)
	 * @see com.esri.solutions.jitk.common.personalization.IPersonalizationContext#setAttributes(java.util.Map)
	 */
	public void setAttributes(Map<? extends String, ? extends Object> attrs) {
		if (attrs == null) {
			throw new NullPointerException();
		}
		m_attributes.putAll(attrs);
	}
	
	/**
	 * Sets the Current User within this {@link IPersonalizationContext}.  The
	 * Current User represents the current logged in User within the application.
	 * The Personalization Data will be retrieved for this user.
	 * 
	 * @param user  Current logged-in user, cannot be <code>null</code>.
	 * 
	 * @throws NullPointerException		Thrown if the <code>user</code>
	 * 									argument is <code>null</code>.
	 */
	public void setCurrentUserId (IUserId userId) {
		if (userId == null) {
			throw new NullPointerException();
		}
		m_userId = userId;
	}
	
	/**
	 * Sets the reference to the {@link IPersonalizationDataFactory} object.  This
	 * object is needed to create {@link IPersonalizationData} objects for this
	 * object.
	 * 
	 * @param factory Reference to {@link IPersonalizationDataFactory} object, cannot
	 * 				  be <code>null</code>.
	 * @throws NullPointerException		Thrown if the <code>factory</code> argument
	 * 									is <code>null</code>.
	 */
	public void setPersonalizationDataFactory (IPersonalizationDataFactory factory) {
		if (factory == null) {
			throw new NullPointerException();
		}
		m_dataFactory = factory;
	}

	/**
	 * Sets the reference to the {@link IUserFactory} object.  A reference to this object
	 * is needed in order to initialize the Default Preference Settings within the User 
	 * Factory.
	 * 
	 * @param factory	Reference to {@link IUserFactory} object, cannot be <code>null</code>
	 * @throws NullPointerException		Thrown if the <code>factory</code> argument is
	 * 									<code>null</code>.
	 */
	public void setUserFactory (IUserFactory factory) {
		if (factory == null) {
			throw new NullPointerException ();
		}
		m_userFactory = factory;
	}
	
	/**
	 * Sets the reference to the {@link DefaultPreferenceSettingsLoader} object.  A reference to 
	 * this object is needed in order to initialize the Default Preference Settings within the
	 * User Factory.  This object is needed to unmarshall the Default Preference Settings from an
	 * XML file within the scope of the web application into the User Factory object.
	 * 
	 * @param loader  Reference to {@link DefaultPreferenceSettingsLoader} object, 
	 * 				  cannot be <code>null</code>.
	 * @throws NullPointerException		Thrown if the <code>loader</code> argument is
	 * 									<code>null</code>.
	 */
	public void setDefaultPreferenceSettingsLoader (DefaultPreferenceSettingsLoader loader) {
		if (loader == null) {
			throw new NullPointerException ();
		}
		m_defaultPrefLoader = loader;
	}
	/*
	 * (non-Javadoc)
	 * @see com.esri.solutions.jitk.common.personalization.IPersonalizationContext#getWebContext()
	 */
	public WebContext getWebContext() {
		return m_context;
	}

	/*
	 * (non-Javadoc)
	 * @see com.esri.adf.web.data.WebContextInitialize#destroy()
	 */
	public void destroy() {
		destroyWebContextInitializeObjects();
	}

	/*
	 * (non-Javadoc)
	 * @see com.esri.adf.web.data.WebContextInitialize#init(com.esri.adf.web.data.WebContext)
	 */
	public void init(WebContext ctx) {
		m_context = ctx;
		
		PreferenceSettingsType defaultPrefs = m_defaultPrefLoader.getDefaultPreferenceSettings();
		if (defaultPrefs != null) {
			m_userFactory.setDefaultPreferenceSettings(defaultPrefs);
		}
		
		try {
			if (getAttribute(CURRENT_MAP_COMPOSITION_KEY) == null) {
				IPersonalizationData data = getData();
				IMapComposition mc = data.createMapComposition();
				setAttribute(CURRENT_MAP_COMPOSITION_KEY, mc);
			}
		} catch (PersonalizationException e) {
			LOG.warn("", e);
		}
		
		initWebContextInitializeObjects();
		initPersonalizables();
		
	}

	private void initPersonalizables() {
		Map<String,Object> attrs = null;
		
		attrs = getAttributes();
		
		if (attrs == null) {
			return;
		}
		
		Collection<Object> values = attrs.values();
		for (Object obj : values) {
			if (obj instanceof IPersonalizable) {
				IPersonalizable p = (IPersonalizable) obj;
				p.setPersonalizationContext(this);
			}
		}
	}
	
	private void initWebContextInitializeObjects () {
		Map<String,Object> attrs = null;
		
		attrs = getAttributes();
		
		if (attrs == null) {
			return;
		}
		
		Collection<Object> values = attrs.values();
		for (Object obj : values) {
			if (obj instanceof WebContextInitialize) {
				WebContextInitialize wci = (WebContextInitialize) obj;
				wci.init(m_context);
			}
		}
	}

	private void destroyWebContextInitializeObjects () {
		Map<String,Object> attrs = null;
		
		attrs = getAttributes();
		
		if (attrs == null) {
			return;
		}
		
		Collection<Object> values = attrs.values();
		for (Object obj : values) {
			if (obj instanceof WebContextInitialize) {
				WebContextInitialize wci = (WebContextInitialize) obj;
				wci.destroy();
			}
		}
	}
}