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Roma Users module for authentication and profiling aspect implementation
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package org.romaframework.module.users;

import org.romaframework.aspect.authentication.UserObjectPermissionListener;
import org.romaframework.aspect.persistence.PersistenceAspect;
import org.romaframework.aspect.persistence.QueryByFilter;
import org.romaframework.core.Roma;
import org.romaframework.core.flow.Controller;
import org.romaframework.core.schema.SchemaAction;
import org.romaframework.core.schema.SchemaClass;
import org.romaframework.core.schema.SchemaEvent;
import org.romaframework.core.schema.SchemaField;
import org.romaframework.module.users.domain.BaseAccount;
import org.romaframework.module.users.domain.CustomFunction;
import org.romaframework.module.users.domain.CustomProfiling;
import org.romaframework.module.users.repository.CustomProfilingRepository;

public class CustomProfiler implements UserObjectPermissionListener {

	private static final String	SESSION_KEY							= "SESSION_CUSTOM_PROFILING";
	private static final String	NONEXISTENT_SESSION_KEY	= "NOTEXIST_SESSION_CUSTOM_PROFILING";

	public CustomProfiler() {
		Controller.getInstance().registerListener(UserObjectPermissionListener.class, this);
	}

	public CustomProfiling getCustomProfiling() {
		CustomProfiling customProfiling = (CustomProfiling) Roma.session().getProperty(SESSION_KEY);
		if (Roma.session().getActiveSessionInfo().getAccount() == null) {
			return null;
		}
		if (customProfiling == null) {
			if (Roma.session().getProperty(NONEXISTENT_SESSION_KEY) != null)
				return null;
			QueryByFilter filter = new QueryByFilter(CustomProfiling.class);
			filter.setStrategy(PersistenceAspect.STRATEGY_DETACHING);
			filter.addItem("account", QueryByFilter.FIELD_EQUALS, Roma.session().getActiveSessionInfo().getAccount());
			customProfiling = Roma.component(CustomProfilingRepository.class).findFirstByCriteria(filter);
			if (customProfiling == null) {
				Roma.session().setProperty(NONEXISTENT_SESSION_KEY, new Object());
			} else {
				Roma.session().setProperty(SESSION_KEY, customProfiling);
			}
		}
		return customProfiling;
	}

	public boolean allow(String function) {
		CustomProfiling customProfiling = getCustomProfiling();
		if (customProfiling != null) {
			CustomFunction customFunction = customProfiling.getFunctions().get(function);
			if (customFunction != null) {
				if (Boolean.FALSE.equals(customFunction.isAllow()))
					return false;
			}
		}
		return true;
	}

	public CustomProfiling createCustomProfiling() {
		CustomProfiling customProfiling = new CustomProfiling();
		customProfiling.setAccount((BaseAccount) Roma.session().getActiveSessionInfo().getAccount());
		return customProfiling;
	}

	public boolean allowAction(SchemaAction action) {
		return allow(action.getFullName());
	}

	public boolean allowClass(SchemaClass clazz) {
		return allow(clazz.getName());
	}

	public boolean allowEvent(SchemaEvent event) {
		return allow(event.getFullName());
	}

	public boolean allowField(SchemaField field) {
		return allow(field.getFullName());
	}

	public void setCustomProfiling(CustomProfiling profiling) {
		Roma.session().setProperty(SESSION_KEY, profiling);
		Roma.session().setProperty(NONEXISTENT_SESSION_KEY, null);
	}
}