SubjectUtil.java

/*******************************************************************************
 * Copyright (c) 2006-2010 eBay Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License at 
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *    
 *******************************************************************************/
package org.ebayopensource.turmeric.policy.adminui.client.util;

import java.util.Iterator;
import java.util.List;

import org.ebayopensource.turmeric.policy.adminui.client.model.policy.AttributeValue;
import org.ebayopensource.turmeric.policy.adminui.client.model.policy.Subject;
import org.ebayopensource.turmeric.policy.adminui.client.model.policy.SubjectGroup;
import org.ebayopensource.turmeric.policy.adminui.client.model.policy.SubjectMatchType;

import com.google.gwt.core.client.GWT;

/**
 * The Class SubjectUtil.
 */
public class SubjectUtil {

	/**
	 * Gets the subject id.
	 * 
	 * @param subject
	 *            the subject
	 * @return the subject id
	 */
	public static Long getSubjectId(Subject subject) {
		Long id = null;
		Iterator<SubjectMatchType> iter = subject.getSubjectMatchTypes()
				.iterator();
		while (iter.hasNext()) {
			SubjectMatchType matchType = iter.next();
			id = getIdFromSubjectMatch(matchType);
			if (id != null)
				return id;
		}
		return id;
	}

	/**
	 * Gets the subject group id.
	 * 
	 * @param sg
	 *            the sg
	 * @return the subject group id
	 */
	public static Long getSubjectGroupId(SubjectGroup sg) {
		Long id = null;
		Iterator<SubjectMatchType> iter = sg.getSubjectMatchTypes().iterator();
		while (iter.hasNext()) {
			SubjectMatchType matchType = iter.next();
			id = getIdFromSubjectMatch(matchType);
			if (id != null)
				return id;
		}
		return id;

		// List<SubjectMatchType> matchTypes = sg.getSubjectMatchTypes();
		//
		// return getIdFromSubjectMatchch(matchTypes);
	}

	static Long getIdFromSubjectMatch(SubjectMatchType matchType) {
		Long subjectId = null;

		if (matchType != null
				&& matchType
						.getSubjectAttributeDesignator()
						.getAttributeId()
						.equals("urn:oasis:names:tc:xacml:1.0:subject:subject-id")) {
			AttributeValue attributeValue = matchType.getAttributeValue();

			String idString = attributeValue.getValue().toString();
			if ("urn:oasis:names:tc:xacml:1.0:function:integer-equal"
					.equals(matchType.getMatchId())) {
				try {
					subjectId = Long.parseLong(idString);
				} catch (Exception e) {
					GWT.log(e.getLocalizedMessage());
				}
			}

			if ("urn:oasis:names:tc:xacml:1.0:function:string-regexp-match"
					.equals(matchType.getMatchId())) {
				try {
					subjectId = Long.parseLong(idString.substring(3,
							idString.length() - 1));
				} catch (Exception e) {
					GWT.log(e.getLocalizedMessage());
				}
			}
		}

		return subjectId;
	}

	static boolean isExclusion(Subject subject) {
		List<SubjectMatchType> subjectMatchs = subject.getSubjectMatchTypes();
		return isExclusion(subjectMatchs);
	}

	static boolean isSubjectType(Subject subject) {
		List<SubjectMatchType> subjectMatchs = subject.getSubjectMatchTypes();
		return isSubjectType(subjectMatchs);
	}

	// static boolean isExclusion(SubjectGroup subjectGroup)
	// {
	// SubjectMatchType subjectMatchType = subjectGroup.getSubjectMatchType();
	// List<SubjectMatchType> subjectMatchs = new ArrayList<SubjectMatchType>();
	// subjectMatchs.add(subjectMatchType);
	// return isExclusion(subjectMatchs);
	// }

	static boolean isExclusion(List<SubjectMatchType> matchTypes) {
		boolean isExclusion = false;
		for (SubjectMatchType matchType : matchTypes) {
			if (matchType != null
					&& "urn:oasis:names:tc:xacml:1.0:function:string-regexp-match"
							.equals(matchType.getMatchId())) {
				if (getIdFromSubjectMatch(matchType) != null)
					isExclusion = true;
				break;
			}
		}
		return isExclusion;
	}

	static boolean isSubjectType(List<SubjectMatchType> matchTypes) {
		boolean isSubjectType = false;
		for (SubjectMatchType matchType : matchTypes) {
			if (matchType != null
					&& "urn:oasis:names:tc:xacml:1.0:function:string-regexp-match"
							.equals(matchType.getMatchId())) {
				if (getIdFromSubjectMatch(matchType) == null)
					isSubjectType = true;
				break;
			}
		}
		return isSubjectType;
	}

}