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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.
 */

#ifndef AXIS2_HANDLER_DESC_H
#define AXIS2_HANDLER_DESC_H

/**
 * @defgroup axis2_handler_desc handler description
 * @ingroup axis2_desc
 * handler description captures information on a handler. Each handler in the
 * system has an associated handler description. Deployment engine would create
 * handler descriptions based on configuration information. When handlers are
 * loaded from shared libraries, the information captured in handler description
 * would be used.
 * @{
 */

/**
 * @file axis2_handler_desc.h
 */

#include <axutil_utils_defines.h>
#include <axutil_qname.h>
#include <axutil_param.h>
#include <axutil_param_container.h>
#include <axis2_phase_rule.h>
#include <axis2_handler.h>

#ifdef __cplusplus
extern "C"
{
#endif

    /** Type name for struct axis2_handler_desc */
    typedef struct axis2_handler_desc axis2_handler_desc_t;

    /**
     * Gets QName.
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @return pointer to QName, returns a reference, not a cloned copy
     */
    AXIS2_EXTERN const axutil_string_t *AXIS2_CALL
    axis2_handler_desc_get_name(
        const axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env);

    /**
     * Sets QName.
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @param name pointer to string representing handler name 
     * of QName
     * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
     */
    AXIS2_EXTERN axis2_status_t AXIS2_CALL
    axis2_handler_desc_set_name(
        axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env,
        axutil_string_t * name);

    /**
     * Gets phase rules.
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @return pointer to phase rule struct containing phase rules
     */
    AXIS2_EXTERN axis2_phase_rule_t *AXIS2_CALL
    axis2_handler_desc_get_rules(
        const axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env);

    /**
     * Sets phase rules.
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @param phase_rule pointer to phase rule struct, handler description
     * assumes ownership of the struct
     * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
     */
    AXIS2_EXTERN axis2_status_t AXIS2_CALL
    axis2_handler_desc_set_rules(
        axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env,
        axis2_phase_rule_t * phase_rule);

    /**
     * Gets named parameter.
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @param name parameter name string 
     * @return pointer to parameter if found, else NULL. Return a reference
     * not a cloned copy
     */
    AXIS2_EXTERN axutil_param_t *AXIS2_CALL
    axis2_handler_desc_get_param(
        const axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env,
        const axis2_char_t * name);

    /**
     * Adds given parameter to the parameter list.
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @param param pointer to param
     * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
     */
    AXIS2_EXTERN axis2_status_t AXIS2_CALL
    axis2_handler_desc_add_param(
        axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env,
        axutil_param_t * param);

    /**
     * Gets all parameters stored within handler description.
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @return pointer to array list containing parameters, returns a 
     * reference, not a cloned copy
     */
    AXIS2_EXTERN axutil_array_list_t *AXIS2_CALL
    axis2_handler_desc_get_all_params(
        const axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env);

    /**
     * Checks if the named parameter is locked at any level
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @param param_name parameter name string 
     * @return AXIS2_TRUE if the parameter is locked, else AXIS2_FALSE
     */
    AXIS2_EXTERN axis2_bool_t AXIS2_CALL
    axis2_handler_desc_is_param_locked(
        const axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env,
        const axis2_char_t * param_name);

    /**
     * Gets the handler associated with the handler description.
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @return pointer to handler, returns a reference, not a cloned copy
     */
    AXIS2_EXTERN axis2_handler_t *AXIS2_CALL
    axis2_handler_desc_get_handler(
        const axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env);

    /**
     * Sets the handler associated with the handler description.
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @param handler pointer to handler, handler description assumes
     * the ownership of the handler
     * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
     */
    AXIS2_EXTERN axis2_status_t AXIS2_CALL
    axis2_handler_desc_set_handler(
        axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env,
        axis2_handler_t * handler);

    /**
     * Gets the class name. Class name is the name of the shared library 
     * file that contains the implementation of the handler.
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @return class name string
     */
    AXIS2_EXTERN const axis2_char_t *AXIS2_CALL
    axis2_handler_desc_get_class_name(
        const axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env);

    /**
     * Sets the class name. Class name is the name of the shared library 
     * file that contains the implementation of the handler.
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @param class_name class name string
     * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
     */
    AXIS2_EXTERN axis2_status_t AXIS2_CALL
    axis2_handler_desc_set_class_name(
        axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env,
        const axis2_char_t * class_name);

    /**
     * Gets the parent. Parent of handler description is of type parameter
     * container.
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @return pointer to parent parameter container, returns a reference,
     * not a cloned copy
     */
    AXIS2_EXTERN axutil_param_container_t *AXIS2_CALL
    axis2_handler_desc_get_parent(
        const axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env);

    /**
     * Gets the parent. Parent of handler description is of type parameter
     * container.
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @param parent pointer to parent parameter container struct, handler
     * description assumes ownership of struct
     * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
     */
    AXIS2_EXTERN axis2_status_t AXIS2_CALL
    axis2_handler_desc_set_parent(
        axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env,
        axutil_param_container_t * parent);

    /**
     * Frees handler description.
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
     */
    AXIS2_EXTERN void AXIS2_CALL
    axis2_handler_desc_free(
        axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env);

    /**
     * Gets the param container.
     * @param handler_desc pointer to handler description
     * @param env pointer to environment struct
     * @return pointer to parameter container, returns a reference,
     * not a cloned copy
     */
    AXIS2_EXTERN axutil_param_container_t *AXIS2_CALL
    axis2_handler_desc_get_param_container(
        const axis2_handler_desc_t * handler_desc,
        const axutil_env_t * env);

    /**
     * Creates handler description struct instance.
     * @param env pointer to env pointer to environment struct
     * @param name pointer to string representing handler name, can be NULL, create function 
     * clones this    
     * @return pointer to newly created handler description struct
     */
    AXIS2_EXTERN axis2_handler_desc_t *AXIS2_CALL
    axis2_handler_desc_create(
        const axutil_env_t * env,
        axutil_string_t * name);

    /** @} */

#ifdef __cplusplus
}
#endif

#endif                          /* AXIS2_HANDLER_DESC_H */