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/*
 * PolicyResourceLoader.java
 *
 * Created on April 4, 2006, 5:33 PM
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package com.sun.xml.wss.impl.util;

import com.sun.xml.ws.policy.Policy;
import com.sun.xml.ws.policy.PolicyException;
import com.sun.xml.ws.policy.sourcemodel.PolicySourceModelContext;
import com.sun.xml.ws.policy.sourcemodel.PolicyModelTranslator;
import com.sun.xml.ws.policy.sourcemodel.PolicyModelUnmarshaller;
import com.sun.xml.ws.policy.sourcemodel.PolicySourceModel;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
/**
 *
 * @author ashutosh.shahi@sun.com
 */
public class PolicyResourceLoader {
    
    /** Creates a new instance of PolicyResourceLoader */
    public PolicyResourceLoader() {
    }
    
    public static PolicySourceModel unmarshallModel(String resource) throws PolicyException, IOException {
        Reader reader = getResourceReader(resource);
        PolicySourceModel model = PolicyModelUnmarshaller.getXmlUnmarshaller().unmarshalModel(reader);
        reader.close();
        return model;
    }
    
    public static Reader getResourceReader(String resourceName) {
        return new InputStreamReader(Thread.currentThread().getContextClassLoader().getResourceAsStream(resourceName));
    }
    
    public static Policy translateModel(PolicySourceModel model) throws PolicyException {
        return PolicyModelTranslator.getTranslator().translate(model);
    }
    
    public static Policy loadPolicy(String resourceName) throws PolicyException, IOException {
        return translateModel(unmarshallModel(resourceName));
    }
}