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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 AXIOM_XPATH_STREAMING_H
#define AXIOM_XPATH_STREAMING_H
#include "xpath_internals.h"
#ifdef __cplusplus
extern "C"
{
#endif
/**
* @defgroup axiom_xpath_streaming streaming
* @ingroup axiom_xpath
* @{
*/
/**
* XPath streaming support
*/
typedef enum axiom_xpath_streaming_t
{
AXIOM_XPATH_STREAMING_NOT_SUPPORTED = 0,
AXIOM_XPATH_STREAMING_SUPPORTED,
AXIOM_XPATH_STREAMING_CONSTANT,
AXIOM_XPATH_STREAMING_ATTRIBUTE
} axiom_xpath_streaming_t;
/** Check whether the given expression is supported on streaming XML */
#define AXIOM_XPATH_CHECK(op) axiom_xpath_streaming_check_operation(env, expr, op)
/** Get an operation from the list of operations */
#define AXIOM_XPATH_OPR_EXPR_GET(ind) (axiom_xpath_operation_t *) \
axutil_array_list_get(expr->operations, env, ind)
/**
* Checks whether the given expression is supported on streaming XML
*
* @param env Environment must not be null
* @param expr A pointer to the XPath expression
* @param op_p Index of the operation in the list of operations
* @return Whether the given operation can be evaluated on streaming XML
*/
axiom_xpath_streaming_t axiom_xpath_streaming_check_operation(
const axutil_env_t *env,
axiom_xpath_expression_t* expr,
int op_p);
/**
* Checks whether the predicate is supported on streaming XML.
*
* @param env Environment must not be null
* @param expr A pointer to the XPath expression
* @param op_p Index of the operation in the list of operations
* @return Whether the given operation can be evaluated on streaming XML
*/
axiom_xpath_streaming_t axiom_xpath_streaming_check_predicate(
const axutil_env_t *env,
axiom_xpath_expression_t* expr,
int op_p);
/**
* Checks whether the predicate is supported on streaming XML.
*
* @param env Environment must not be null
* @param expr A pointer to the XPath expression
* @param op Index of the operation in the list of operations
* @return Whether the given operation can be evaluated on streaming XML
*/
axiom_xpath_streaming_t axiom_xpath_streaming_check_node_test(
const axutil_env_t *env,
axiom_xpath_expression_t* expr,
axiom_xpath_operation_t* op);
/**
* Checks whether the two operations can be evaluated on streaming XML
* sequencially (one after the other), where the result of the first
* operation is the context of the next
*
* @param r1 Type of first operation
* @param r2 Type of second operation
* @return Whether the given operations can be evaluated on streaming XML
*/
axiom_xpath_streaming_t axiom_xpath_streaming_combine_dependent(
axiom_xpath_streaming_t r1,
axiom_xpath_streaming_t r2);
/**
* Checks whether the two operations can be evaluated on streaming XML
* simultaneousy
*
* @param r1 Type of first operation
* @param r2 Type of second operation
* @return Whether the given operations can be evaluated on streaming XML
*/
axiom_xpath_streaming_t axiom_xpath_streaming_combine_independent(
axiom_xpath_streaming_t r1,
axiom_xpath_streaming_t r2);
/** @} */
#ifdef __cplusplus
}
#endif
#endif
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