/*
* Copyright 2004,2005 The Apache Software Foundation.
*
* Licensed 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_CTX_H
#define AXIS2_CTX_H

/**
 * @defgroup axis2_context context hierarchy
 * @ingroup axis2
 * @{
 * @}
 */

/** 
 * @defgroup axis2_ctx context
 * @ingroup axis2_context
 * context is the base struct of all the context related structs. This struct 
 * encapsulates the common operations and data for all context types. All the 
 * context types, configuration, service group, service and operation has the
 * base of type context. 
 * @{
 */

/**
 * @file axis2_ctx.h
 */

#include <axis2_defines.h>
#include <axis2_hash.h>
#include <axis2_env.h>
#include <axis2_property.h>

#ifdef __cplusplus
extern "C"
{
#endif


    /** Type name for struct axis2_ctx_ops */
    typedef struct axis2_ctx_ops axis2_ctx_ops_t;
    /** Type name for struct axis2_ctx */
    typedef struct axis2_ctx axis2_ctx_t;


    /**
     * context ops struct.
     * Encapsulator struct for ops of axis2_ctx
     */
    struct axis2_ctx_ops
    {
        /**
         * Sets a property with the given key.
         * @param ctx pointer to context struct
         * @param env pointer to environment struct
         * @param key key string to store the property with
         * @param value pointer to property to be stored, context assumes the 
         * ownership of the property
         * @param persistent persist ency status, AXIS2_TRUE if the value is to 
         * be stored in the resistant store, AXIS2_FALSE if it is to be stored 
         * in the non-persistent store
         * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
         */
        axis2_status_t (AXIS2_CALL *
                set_property)(
                    struct axis2_ctx *ctx,
                    const axis2_env_t *env,
                    const axis2_char_t *key,
                    axis2_property_t *value,
                    const axis2_bool_t persistent);

        /**
         * Gets the property with the given key.
         * @param ctx pointer to context struct
         * @param env pointer to environment struct
         * @param key key string
         * @param persistent persistence status, AXIS2_TRUE if the value is to 
         * be retrieved from the persistent store, AXIS2_FALSE if it is to be 
         * retrieved from the non-persistent store
         * @return pointer to property struct corresponding to the given key
         */
        axis2_property_t *(AXIS2_CALL *
                get_property)(
                    const axis2_ctx_t *ctx,
                    const axis2_env_t *env,
                    const axis2_char_t *key,
                    const axis2_bool_t persistent);

        /**
         * Gets the non-persistent map of properties.
         * @param ctx pointer to context struct
         * @param env pointer to environment struct
         * @return pointer to the hash map which stores the non-persistent
         * properties
         */
        axis2_hash_t *(AXIS2_CALL *
                get_non_persistent_map)(
                    const axis2_ctx_t *ctx,
                    const axis2_env_t *env);

        /**
         * Gets the persistent map of properties.
         * @param ctx pointer to context struct
         * @param env pointer to environment struct
         * @return pointer to the hash map which stores the persistent
         * properties
         */
        axis2_hash_t *(AXIS2_CALL *
                get_persistent_map)(
                    const axis2_ctx_t *ctx,
                    const axis2_env_t *env);
                    
        /**
         * Gets all properties stored within context. 
         * @param ctx pointer to context struct
         * @param env pointer to environment struct
         * @return pointer to hash table containing all properties
         */
        axis2_hash_t *(AXIS2_CALL *
                get_all_properties)(
                    const axis2_ctx_t *ctx,
                    const axis2_env_t *env);


        /**
         * Frees context struct.
         * @param ctx pointer to context struct
         * @param env pointer to environment struct
         * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
         */
        axis2_status_t (AXIS2_CALL *
                free)(
                    axis2_ctx_t *ctx,
                    const axis2_env_t *env);

        /**
         * Sets non-persistent map of properties.
         * @param ctx pointer to context struct
         * @param env pointer to environment struct
         * @param map pointer to hash map, context assumes ownership of the map
         * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
         */ 
        axis2_status_t (AXIS2_CALL *
                set_non_persistent_map)(
                    struct axis2_ctx *ctx,
                    const axis2_env_t *env,
                    axis2_hash_t *map);

        /**
         * Sets persistent map of properties.
         * @param ctx pointer to context struct
         * @param env pointer to environment struct
         * @param map pointer to hash map, context assumes ownership of the map
         * @return AXIS2_SUCCESS on success, else AXIS2_FAILURE
         */
        axis2_status_t (AXIS2_CALL *
                set_persistent_map)(
                    struct axis2_ctx *ctx,
                    const axis2_env_t *env,
                    axis2_hash_t *map);
    };

    /**
     * context struct.
     */
    struct axis2_ctx
    {
        /** operations of context struct */
        axis2_ctx_ops_t *ops;
    };

    /**
     * Creates a context struct.
     * @param env pointer to environment struct
     * @return pointer to newly created context
     */
    AXIS2_EXTERN axis2_ctx_t *AXIS2_CALL 
    axis2_ctx_create(
        const axis2_env_t *env);

/** Sets property with given key.
    @sa axis2_ctx_ops#set_property */
#define AXIS2_CTX_SET_PROPERTY(ctx, env, key, value, persistent) \
    ((ctx)->ops->set_property(ctx, env, key, value, persistent))

/** Gets property with given key.
    @sa axis2_ctx_ops#get_property */
#define AXIS2_CTX_GET_PROPERTY(ctx, env, key, persistent) \
    ((ctx)->ops->get_property(ctx, env, key, persistent))

/** Gets non persistent map of properties.
    @sa axis2_ctx_ops#get_non_persistent_map */
#define AXIS2_CTX_GET_NON_PERSISTANT_MAP(ctx, env) \
    ((ctx)->ops->get_non_persistent_map(ctx, env))

/** Gets all properties.
    @sa axis2_ctx_ops#get_all_properties */
#define AXIS2_CTX_GET_ALL_PROPERTIES(ctx, env) \
    ((ctx)->ops->get_all_properties(ctx, env))

/** Gets persistent map of properties.
    @sa axis2_ctx_ops#get_persistent_map */
#define AXIS2_CTX_GET_PERSISTANT_MAP(ctx, env) \
    ((ctx)->ops->get_persistent_map(ctx, env))

/** Sets non persistent map of properties.
    @sa axis2_ctx_ops#set_non_persistent_map */
#define AXIS2_CTX_SET_NON_PERSISTANT_MAP(ctx, env, map) \
    ((ctx)->ops->set_non_persistent_map(ctx, env, map))

/** Sets persistent map of properties.
    @sa axis2_ctx_ops#set_persistent_map */
#define AXIS2_CTX_SET_PERSISTANT_MAP(ctx, env, map) \
    ((ctx)->ops->set_persistent_map(ctx, env, map))

/** Frees the context.
    @sa axis2_ctx_ops#free */
#define AXIS2_CTX_FREE(ctx, env) \
    ((ctx)->ops->free (ctx, env))

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

#endif                          /* AXIS2_CTX_H */