juneau-rest/juneau-rest-server/src/main/java/org/apache/juneau/rest/arg/RestContextArgs.java

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// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance            *
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// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
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package org.apache.juneau.rest.arg;

import java.util.logging.*;

import org.apache.juneau.*;
import org.apache.juneau.config.*;
import org.apache.juneau.cp.*;
import org.apache.juneau.encoders.*;
import org.apache.juneau.reflect.*;
import org.apache.juneau.rest.*;
import org.apache.juneau.rest.annotation.*;
import org.apache.juneau.rest.debug.*;
import org.apache.juneau.rest.logger.*;
import org.apache.juneau.rest.staticfile.*;
import org.apache.juneau.rest.stats.*;
import org.apache.juneau.utils.*;

/**
 * Resolves method parameters on {@link RestOp}-annotated Java methods of types found on the {@link RestContext} object.
 *
 * <ul class='javatree'>
 * 	<li class='jc'>{@link BeanContext}
 * 	<li class='jc'>{@link Config}
 * 	<li class='jc'>{@link DebugEnablement}
 * 	<li class='jc'>{@link EncoderSet}
 * 	<li class='jc'>{@link FileFinder}
 * 	<li class='jc'>{@link Logger}
 * 	<li class='jc'>{@link MethodExecStore}
 * 	<li class='jc'>{@link RestChildren}
 * 	<li class='jc'>{@link RestContext}
 * 	<li class='jc'>{@link RestContextStats}
 * 	<li class='jc'>{@link RestLogger}
 * 	<li class='jc'>{@link RestOperations}
 * 	<li class='jc'>{@link StaticFiles}
 * 	<li class='jc'>{@link ThrownStore}
 * </ul>
 *
 * <ul class='seealso'>
 * 	<li class='link'>{@doc jrs.JavaMethodParameters}
 * 	<li class='extlink'>{@source}
 * </ul>
 */
public class RestContextArgs extends SimpleRestOperationArg {

	/**
	 * Static creator.
	 *
	 * @param paramInfo The Java method parameter being resolved.
	 * @return A new arg, or <jk>null</jk> if the parameter type is not one of the supported types.
	 */
	public static RestContextArgs create(ParamInfo paramInfo) {
		if (paramInfo.isType(BeanContext.class))
			return new RestContextArgs(x->x.getBeanContext());
		if (paramInfo.isType(Config.class))
			return new RestContextArgs(x->x.getConfig());
		if (paramInfo.isType(DebugEnablement.class))
			return new RestContextArgs(x->x.getDebugEnablement());
		if (paramInfo.isType(EncoderSet.class))
			return new RestContextArgs(x->x.getEncoders());
		if (paramInfo.isType(FileFinder.class))
			return new RestContextArgs(x->x.getFileFinder());
		if (paramInfo.isType(Logger.class))
			return new RestContextArgs(x->x.getLogger());
		if (paramInfo.isType(MethodExecStore.class))
			return new RestContextArgs(x->x.getMethodExecStore());
		if (paramInfo.isType(RestChildren.class))
			return new RestContextArgs(x->x.getRestChildren());
		if (paramInfo.isType(RestContext.class))
			return new RestContextArgs(x->x);
		if (paramInfo.isType(RestContextStats.class))
			return new RestContextArgs(x->x.getStats());
		if (paramInfo.isType(RestLogger.class))
			return new RestContextArgs(x->x.getCallLogger());
		if (paramInfo.isType(RestOperations.class))
			return new RestContextArgs(x->x.getRestOperations());
		if (paramInfo.isType(StaticFiles.class))
			return new RestContextArgs(x->x.getStaticFiles());
		if (paramInfo.isType(ThrownStore.class))
			return new RestContextArgs(x->x.getThrownStore());
		return null;
	}

	/**
	 * Constructor.
	 *
	 * @param <T> The function return type.
	 * @param function The function for finding the arg.
	 */
	protected <T> RestContextArgs(ThrowingFunction<RestContext,T> function) {
		super((session)->function.apply(session.getRestContext()));
	}
}