author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 18 Aug 2010 10:53:26 +0300 | |
changeset 15 | cf5c74390b98 |
parent 0 | 671dee74050a |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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#ifndef CPIX_CPIXERROR_H |
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#define CPIX_CPIXERROR_H |
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#include <wchar.h> |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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/************************************************************************ |
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* Class cpix_Error and related types |
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*/ |
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enum cpix_ErrorType_ |
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{ |
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// Unknown exception |
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ET_UNKNOWN_EXC = 0x0000, |
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// Standard C++ exceptions |
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ET_STD_CPP_EXC = 0x0100, |
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ET_STD_BAD_ALLOC_EXC = 0x0101, |
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// TODO perhaps more std C++ exceptions are of interest? |
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// 'Exceptions' that are generated by CPix API impl (CpixExc) |
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ET_CPIX_EXC = 0x0200, |
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// LuceneError exception |
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ET_CLUCENE_EXC = 0x0400, |
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// Exception(s) from Cpt (cpixtools) component |
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ET_CPT_EXC = 0x0800, |
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ET_CPTSYNTAX_EXC = 0x0801, |
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// OS exceptions, if any |
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ET_OS_EXC = 0x1000 |
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}; |
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typedef enum cpix_ErrorType_ cpix_ErrorType; |
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struct cpix_Error_ |
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{ |
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// the type of the error |
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cpix_ErrorType type_; |
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// Detailed error message, may be NULL. |
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const wchar_t * msg_; |
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// Implementation detail (pointer to derived C++ class instance) |
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void * impl_; |
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}; |
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typedef cpix_Error_ cpix_Error; |
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/** |
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* Generates a human readable error report based on the |
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* error. Never fails (the report message may be truncated). |
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* |
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* @param thisError the error object for which to generate error. |
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* Unorthodoxly, it may be NULL, in which case empty string |
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* is generated. |
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* |
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* @param target the target buffer to render the report to. Must |
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* not be NULL. |
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* |
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* @param targetLength the max amount of character to put in |
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* buffer, including the terminating zero. It must be |
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* greater than or equal to 1, obviously. |
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*/ |
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void cpix_Error_report(cpix_Error * thisError, |
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wchar_t * target, |
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size_t targetLength); |
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/** |
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* Destroys this error instance. |
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* @return always returns NULL |
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*/ |
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cpix_Error * cpix_Error_destroy(cpix_Error * thisError); |
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/** |
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* Tests if the last operation on cpixObj has failed. |
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*/ |
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#define cpix_Failed(cpixObj) ((cpixObj)->err_ != NULL) |
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/** |
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* Tests if the last operation on cpixObj has succeeded. |
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*/ |
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#define cpix_Succeeded(cpixObj) ((cpixObj)->err_ == NULL) |
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/** |
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* Clears the error state of cpixObj. |
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*/ |
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#define cpix_ClearError(cpixObj) ((cpixObj)->err_ = cpix_Error_destroy((cpixObj)->err_)) |
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/* |
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* Determines to what extent the cpix_hits_docs() is able to fetch available hits |
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* Previously a check on cpix_Failed/Suceeded(hits) suffices, but with the batch_get_doc |
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* implementation a request for N results may results in X fetches where (X <= N) To |
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* correctly determine how many actual results are fetched a check on _err is not enough |
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* and _ptr too have to cheked for NULL |
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*/ |
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#define doc_Fetch_Succeeded(docObj) ((docObj)->ptr_ != NULL) |
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#define doc_Fetch_Failed(docObj) ((docObj)->ptr_ == NULL) |
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/** |
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* Any "static" calls will give the result back via this |
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* structure. |
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*/ |
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struct cpix_Result_ |
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{ |
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// Last error, if any, that resulted from executing a "static" |
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// operation. |
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// Use macros cpix_Failed, cpix_Succeeded and cpix_ClearError. |
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// Do not attempt releasing it. |
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cpix_Error * err_; |
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}; |
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typedef cpix_Result_ cpix_Result; |
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#ifdef __cplusplus |
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} /* extern "C" */ |
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#endif /* __cplusplus */ |
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#endif /* CPIX_CPIXERROR_H */ |