/*
 * 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.
 */

#ifndef AXIS2_MSG_H
#define AXIS2_MSG_H

/** 
 * @defgroup axis2_msg message
 * @ingroup axis2_desc
 * message represents a message in a WSDL. It captures SOAP headers related to 
 * a given message, the direction as well as the phases to be invoked along
 * the flow. Based on the message direction, there could be only one flow 
 * associated with a message.
 * @{
 */

/**
  * @file axis2_msg.h
  */

#include <axis2_param_container.h>
#include <axis2_op.h>
#include <axis2_array_list.h>
#include <axis2_description.h>
#include <axis2_phase_meta.h>

#define AXIS2_MSG_IN            "InMessage"
#define AXIS2_MSG_OUT           "OutMessage"
#define AXIS2_MSG_IN_FAULT      "InFaultMessage"
#define AXIS2_MSG_OUT_FAULT     "OutFaultMessage"


#ifdef __cplusplus
extern "C"
{
#endif

    /** Type name for struct axis2_msg_ops */ 
    typedef struct axis2_msg_ops axis2_msg_ops_t;
    /** Type name for struct axis2_msg */ 
    typedef struct axis2_msg axis2_msg_t;

    /**
     * message ops struct.
     * Encapsulator struct for ops of axis2_msg.
     */
    struct axis2_msg_ops
    {
        /** 
         * Frees message.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
         */
        axis2_status_t (AXIS2_CALL *
                free)(
                    axis2_msg_t *msg,
                    const axis2_env_t *env);

        /** 
         * Adds a parameter.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @param param pointer to parameter, message assumes ownership of 
         * parameter
         * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
         */
        axis2_status_t (AXIS2_CALL *
                add_param)(
                    axis2_msg_t *msg,
                    const axis2_env_t *env,
                    axis2_param_t *param);

        /**
         * Gets the named parameter.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @param name parameter name string
         * @return pointer to parameter corresponding to the same name, returns
         * a reference, not a cloned copy
         */
        axis2_param_t *(AXIS2_CALL *
                get_param)(
                    const axis2_msg_t *msg,
                    const axis2_env_t *env,
                    const axis2_char_t *name);

        /** 
         * Gets all parameters stored in message.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @return pointer to list of parameters, returns a reference, not a 
         * cloned copy
         */
        axis2_array_list_t *(AXIS2_CALL *
                get_all_params)(
                    const axis2_msg_t *msg,
                    const axis2_env_t *env);

        /** 
         * Checks if the named parameter is locked.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @param param_name parameter name string
         * @return AXIS2_TRUE if the parameter is locked, else AXIS2_FALSE         
         */
        axis2_bool_t (AXIS2_CALL *
                is_param_locked)(
                    axis2_msg_t *msg,
                    const axis2_env_t *env,
                    const axis2_char_t *param_name);

        /** 
         * Sets parent. Parent of a message is of type operation.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @param op pointer to parent operation, message does not assume 
         * ownership of parent
         * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
         */
        axis2_status_t (AXIS2_CALL *
                set_parent)(
                    axis2_msg_t *msg,
                    const axis2_env_t *env,
                    axis2_op_t *op);

        /** 
         * Gets parent. Parent of a message is of type operation.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @return pointer to parent operation, returns a reference, not a 
         * cloned copy
         */
        axis2_op_t *(AXIS2_CALL *
                get_parent)(
                    const axis2_msg_t *msg,
                    const axis2_env_t *env);

        /**
         * Gets flow of execution associated with the message.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @return pointer to array list containing the list of phases 
         * representing the flow
         */
        axis2_array_list_t *(AXIS2_CALL *
                get_flow)(
                    const axis2_msg_t *msg,
                    const axis2_env_t *env);

        /** 
         * Sets flow of execution associated with the message.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @param flow pointer to array list of phases representing the flow,
         * message assumes ownership of flow
         * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
         */
        axis2_status_t (AXIS2_CALL *
                set_flow)(
                    axis2_msg_t *msg,
                    const axis2_env_t *env,
                    axis2_array_list_t *flow);

        /** 
         * Gets direction of message.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @return direction string
         */
        const axis2_char_t *(AXIS2_CALL *
                get_direction)(
                    const axis2_msg_t *msg,
                    const axis2_env_t *env);

        /** 
         * Sets direction of message.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @param direction pointer to direction
         * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
         */
        axis2_status_t (AXIS2_CALL *
                set_direction)(
                    axis2_msg_t *msg,
                    const axis2_env_t *env,
                    const axis2_char_t *direction);

        /** 
         * Gets QName representing message.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @return pointer to QName, returns a reference, not a cloned copy
         */
        const axis2_qname_t *(AXIS2_CALL *
                get_element_qname)(
                    const axis2_msg_t *msg,
                    const axis2_env_t *env);

        /** 
         * Sets QName representing message.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @param element_qname pointer to QName representing message, this 
         * function creates a clone of QName
         * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
         */
        axis2_status_t (AXIS2_CALL *
                set_element_qname)(
                    axis2_msg_t *msg,
                    const axis2_env_t *env,
                    const axis2_qname_t *element_qname);

        /** 
         * Gets message name.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @return message name string.
         */
        const axis2_char_t *(AXIS2_CALL *
                get_name)(
                    const axis2_msg_t *msg,
                    const axis2_env_t *env);

        /** 
         * Sets message name.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @param message name string
         * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
         */
        axis2_status_t (AXIS2_CALL *
                set_name)(
                    axis2_msg_t *msg,
                    const axis2_env_t *env,
                    const axis2_char_t *name);

        /** 
         * Gets XML schema element associated with the message.
         * @param msg pointer to message
         * @param env pointer to environment struct
         * @return pointer to XML schema element, returns a reference, not 
         * a cloned copy
         */
        xml_schema_element_t *(AXIS2_CALL *
                get_schema_element)(
                    const axis2_msg_t *msg,
                    const axis2_env_t *env);
    };

    /**
     * message struct.
     */
    struct axis2_msg
    {
        /** operations of message struct */
        axis2_msg_ops_t *ops;
        /** parameter container to hold message parameters */
        struct axis2_param_container *param_container;
    };

    /**
     * Creates message struct instance.
     * @param env pointer to environment struct
     * @return pointer to newly created message
     */
    AXIS2_EXTERN axis2_msg_t *AXIS2_CALL
    axis2_msg_create(
        const axis2_env_t *env);


/** Frees message.
    @sa axis2_msg_ops#get_svc */
#define AXIS2_MSG_FREE(msg, env) \
        ((msg)->ops->free (msg, env))

/** Adds given parameter.
    @sa axis2_msg_ops#add_param */
#define AXIS2_MSG_ADD_PARAM(msg, env, param) \
      ((msg)->ops->add_param (msg, env, param))

/** Gets named parameter.
    @sa axis2_msg_ops#get_param */
#define AXIS2_MSG_GET_PARAM(msg, env, key) \
      ((msg)->ops->get_param (msg, env, key))

/** Gets all parameters.
    @sa axis2_msg_ops#get_all_params */
#define AXIS2_MSG_GET_ALL_PARAMS(msg, env) \
      ((msg)->ops->get_all_params (msg, env))

/** Checks if named parameter is locked.
    @sa axis2_msg_ops#is_param_locked */
#define AXIS2_MSG_IS_PARAM_LOCKED(msg, env, param_name) \
        ((msg)->ops->is_param_locked(msg, env, param_name))

/** Sets parent operation.
    @sa axis2_msg_ops#set_parent */
#define AXIS2_MSG_SET_PARENT(msg, env, service_desc) \
        ((msg)->ops->set_parent (msg, env, service_desc))

/** Gets parent operation.
    @sa axis2_msg_ops#get_parent */
#define AXIS2_MSG_GET_PARENT(msg, env) \
      ((msg)->ops->get_parent (msg, env))

/** Gets execution flow.
    @sa axis2_msg_ops#get_flow */
#define AXIS2_MSG_GET_FLOW(msg, env) \
      ((msg)->ops->get_flow (msg, env))

/** Sets execution flow.
    @sa axis2_msg_ops#set_flow */
#define AXIS2_MSG_SET_FLOW(msg, env, flow) \
      ((msg)->ops->set_flow (msg, env, flow))

/** Gets message direction.
    @sa axis2_msg_ops#get_direction */
#define AXIS2_MSG_GET_DIRECTION(msg, env) \
      ((msg)->ops->get_direction (msg, env))

/** Sets message direction.
    @sa axis2_msg_ops#set_direction */
#define AXIS2_MSG_SET_DIRECTION(msg, env, direction) \
      ((msg)->ops->set_direction (msg, env, direction))

/** Gets element QName.
    @sa axis2_msg_ops#get_element_qname */
#define AXIS2_MSG_GET_ELEMENT_QNAME(msg, env) \
      ((msg)->ops->get_element_qname(msg, env))

/** Sets element QName.
    @sa axis2_msg_ops#set_element_qname */
#define AXIS2_MSG_SET_ELEMENT_QNAME(msg, env, element_qname) \
      ((msg)->ops->set_element_qname(msg, env, element_qname))

/** Gets name.
    @sa axis2_msg_ops#get_name */
#define AXIS2_MSG_GET_NAME(msg, env) \
      ((msg)->ops->get_name(msg, env))

/** Sets name.
    @sa axis2_msg_ops#set_name */
#define AXIS2_MSG_SET_NAME(msg, env, name) \
      ((msg)->ops->set_name(msg, env, name))

/** Gets schema element associated with message.
    @sa axis2_msg_ops#get_schema_element */
#define AXIS2_MSG_GET_SCHEMA_ELEMENT(msg, env) \
      ((msg)->ops->get_schema_element(msg, env))

/** @} */
#ifdef __cplusplus
}
#endif
#endif  /* AXIS2_MSG_H */