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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <axutil_param_container.h>

struct axutil_param_container
{
    axutil_hash_t *params;
    axutil_array_list_t *params_list;
};

AXIS2_EXTERN axutil_param_container_t *AXIS2_CALL
axutil_param_container_create(
    const axutil_env_t *env)
{
    axutil_param_container_t *param_container = NULL;

    AXIS2_ENV_CHECK(env, NULL);

    param_container = (axutil_param_container_t *)AXIS2_MALLOC(env->allocator,
        sizeof(axutil_param_container_t));

    if(!param_container)
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_NO_MEMORY, AXIS2_FAILURE);
        AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, "Not enough memory");
        return NULL;
    }

    param_container->params = NULL;
    param_container->params_list = NULL;
    param_container->params_list = axutil_array_list_create(env, 0);

    param_container->params = axutil_hash_make(env);
    if(!param_container->params)
    {
        axutil_param_container_free(param_container, env);
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_NO_MEMORY, AXIS2_FAILURE);
        AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, "Not enough memory");
        return NULL;
    }

    return param_container;
}

AXIS2_EXTERN void AXIS2_CALL
axutil_param_container_free(
    axutil_param_container_t *param_container,
    const axutil_env_t *env)
{
    AXIS2_ENV_CHECK(env, AXIS2_FAILURE);

    if(param_container->params)
    {
        axutil_hash_index_t *hi = NULL;
        void *val = NULL;
        for(hi = axutil_hash_first(param_container->params, env); hi; hi
            = axutil_hash_next(env, hi))
        {
            axutil_param_t *param = NULL;
            axutil_hash_this(hi, NULL, NULL, &val);
            param = (axutil_param_t *)val;
            if(param)
            {
                axutil_param_free(param, env);
                param = NULL;
            }
            val = NULL;
        }
        axutil_hash_free(param_container->params, env);
    }
    if(param_container->params_list)
    {
        /* This is the array list which is returned when all params are
         * requested from param_container. Params referenced here are
         * actually contained in params hash table
         */
        axutil_array_list_free(param_container->params_list, env);
        param_container->params_list = NULL;
    }

    AXIS2_FREE(env->allocator, param_container);
    return;
}

AXIS2_EXTERN void AXIS2_CALL
axutil_param_container_free_void_arg(
    void *param_container,
    const axutil_env_t *env)
{
    axutil_param_container_t *param_container_l = NULL;

    AXIS2_ENV_CHECK(env, AXIS2_FAILURE);
    param_container_l = (axutil_param_container_t *)param_container;
    axutil_param_container_free(param_container_l, env);
    return;
}

AXIS2_EXTERN axis2_status_t AXIS2_CALL
axutil_param_container_add_param(
    axutil_param_container_t *param_container,
    const axutil_env_t *env,
    axutil_param_t *param)
{
    axis2_char_t *param_name = NULL;

    AXIS2_ENV_CHECK(env, AXIS2_FAILURE);
    AXIS2_PARAM_CHECK(env->error, param, AXIS2_FAILURE);

    if(!(param_container->params))
    {
        param_container->params = axutil_hash_make(env);
        if(!param_container->params)
        {
            return AXIS2_FAILURE;
        }
    }
    param_name = axutil_param_get_name(param, env);
    if(!param_name)
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_INVALID_STATE_PARAM, AXIS2_FAILURE);
        AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, "Invalid param state");
        return AXIS2_FAILURE;
    }
    axutil_hash_set(param_container->params, param_name, AXIS2_HASH_KEY_STRING, param);
	axutil_array_list_add(param_container->params_list, env, param);

    return AXIS2_SUCCESS;
}

AXIS2_EXTERN axutil_param_t *AXIS2_CALL
axutil_param_container_get_param(
    axutil_param_container_t *param_container,
    const axutil_env_t *env,
    const axis2_char_t *name)
{
    return (axutil_param_t *)(axutil_hash_get(param_container->params, name, AXIS2_HASH_KEY_STRING));
}

AXIS2_EXTERN axutil_array_list_t *AXIS2_CALL
axutil_param_container_get_params(
    axutil_param_container_t *param_container,
    const axutil_env_t *env)
{
	if(param_container->params_list)
	{
		return param_container->params_list;
	}else
	{
		axutil_hash_index_t *hi = NULL;
        void *val = NULL;
		
		param_container->params_list = axutil_array_list_create(env, 0);
		
        for(hi = axutil_hash_first(param_container->params, env); hi; hi
            = axutil_hash_next(env, hi))
        {
            axutil_param_t *param = NULL;
			axutil_hash_this(hi, NULL, NULL, &val);
            param = (axutil_param_t *)val;
            if(param)
            {
				axutil_array_list_add(param_container->params_list, env, param);               
            }
        }
	}
	return param_container->params_list;
}

AXIS2_EXTERN axis2_bool_t AXIS2_CALL
axutil_param_container_is_param_locked(
    axutil_param_container_t *param_container,
    const axutil_env_t *env,
    const axis2_char_t *param_name)
{
    axutil_param_t *param = NULL;

    param = (axutil_param_t *)(axutil_hash_get(param_container->params, param_name,
        AXIS2_HASH_KEY_STRING));
    if(!param)
    {
        /* In this case we consider param is not locked */
        return AXIS2_FALSE;
    }
    return axutil_param_is_locked(param, env);
}

AXIS2_EXTERN axis2_status_t AXIS2_CALL
axutil_param_container_delete_param(
	axutil_param_container_t *param_container,
	const axutil_env_t *env,
	const axis2_char_t *param_name)
{
	axutil_param_t *param = NULL;
	
	if(!param_name)
	{
		AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, "The requested parameter does not exist");
		return AXIS2_FAILURE;
	}
	param = axutil_hash_get(param_container->params, param_name, AXIS2_HASH_KEY_STRING);
	if(param)
	{
		/** Parameter exists, So remove it from hash table and delete the array list param_list
		which will be built in the next call to get_params 
		*/
		axutil_hash_set(param_container->params, param_name, AXIS2_HASH_KEY_STRING, NULL);
		axutil_param_free(param, env);
		axutil_array_list_free(param_container->params_list, env);
		param_container->params_list = NULL;
		return AXIS2_SUCCESS;	
	}
	return AXIS2_FAILURE;
}