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package com.sun.jersey.server.impl;

import com.sun.jersey.api.core.HttpContext;
import com.sun.jersey.api.core.HttpRequestContext;
import com.sun.jersey.api.core.HttpResponseContext;
import com.sun.jersey.api.core.ExtendedUriInfo;
import java.util.Map;

/**
 * Implementation of {@link HttpContext} using {@link ThreadLocal}
 * to store {@link HttpRequestContext} and {@link HttpResponseContext} instances
 * associated with threads.
 * 
 * @author [email protected]
 */
public final class ThreadLocalHttpContext implements HttpContext {
    private ThreadLocal context = new ThreadLocal();

    /**
     * Set the {@link HttpContext} for the current thread.
     */
    public void set(HttpContext context) {
        this.context.set(context);
    }

    public HttpContext get() {
        return this.context.get();
    }

    public ExtendedUriInfo getUriInfo() {
        try {
            return context.get().getUriInfo();
        } catch (NullPointerException ex) {
            throw new IllegalStateException();
        }
    }
    
    public HttpRequestContext getRequest() {
        try {
            return context.get().getRequest();
        } catch (NullPointerException ex) {
            throw new IllegalStateException();
        }
    }

    public HttpResponseContext getResponse() {
        try {
            return context.get().getResponse();
        } catch (NullPointerException ex) {
            throw new IllegalStateException();
        }
    }
    
    public Map getProperties() {
        try {
            return context.get().getProperties();
        } catch (NullPointerException ex) {
            throw new IllegalStateException();
        }
    }

    public boolean isTracingEnabled() {
        try {
            return context.get().isTracingEnabled();
        } catch (NullPointerException ex) {
            throw new IllegalStateException();
        }
    }

    public void trace(String message) {
        try {
            context.get().trace(message);
        } catch (NullPointerException ex) {
            throw new IllegalStateException();
        }
    }
}