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      1 /*
      2  * Copyright (c) 2011-2014, Intel Corporation
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without modification,
      6  * are permitted provided that the following conditions are met:
      7  *
      8  * 1. Redistributions of source code must retain the above copyright notice, this
      9  * list of conditions and the following disclaimer.
     10  *
     11  * 2. Redistributions in binary form must reproduce the above copyright notice,
     12  * this list of conditions and the following disclaimer in the documentation and/or
     13  * other materials provided with the distribution.
     14  *
     15  * 3. Neither the name of the copyright holder nor the names of its contributors
     16  * may be used to endorse or promote products derived from this software without
     17  * specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     22  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
     23  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     26  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 #include "InstanceConfigurableElement.h"
     31 #include "Mapper.h"
     32 #include "SyncerSet.h"
     33 #include "Syncer.h"
     34 #include "TypeElement.h"
     35 #include "ParameterAccessContext.h"
     36 #include <assert.h>
     37 
     38 #define base CConfigurableElementWithMapping
     39 
     40 CInstanceConfigurableElement::CInstanceConfigurableElement(const std::string& strName, const CTypeElement* pTypeElement) : base(strName), _pTypeElement(pTypeElement), _pSyncer(NULL)
     41 {
     42 }
     43 
     44 std::string CInstanceConfigurableElement::getKind() const
     45 {
     46     // Delegate
     47     return _pTypeElement->getKind();
     48 }
     49 
     50 // Type element
     51 const CTypeElement* CInstanceConfigurableElement::getTypeElement() const
     52 {
     53     return _pTypeElement;
     54 }
     55 
     56 // Mapping
     57 bool CInstanceConfigurableElement::getMappingData(const std::string& strKey, const std::string*& pStrValue) const
     58 {
     59     // Delegate
     60     return getTypeElement()->getMappingData(strKey, pStrValue);
     61 }
     62 
     63 // Returns the formatted mapping
     64 std::string CInstanceConfigurableElement::getFormattedMapping() const
     65 {
     66     // Delegate
     67     return getTypeElement()->getFormattedMapping();
     68 }
     69 
     70 bool CInstanceConfigurableElement::map(IMapper& mapper, std::string& strError)
     71 {
     72     bool bHasMappingData = getTypeElement()->hasMappingData();
     73     bool bKeepDiving = true;
     74 
     75     // Begin
     76     if (bHasMappingData && !mapper.mapBegin(this, bKeepDiving, strError)) {
     77 
     78         return false;
     79     }
     80 
     81     // Go on through children?
     82     if (bKeepDiving) {
     83 
     84         // Map children
     85         size_t uiNbChildren = getNbChildren();
     86         size_t uiChild;
     87 
     88         for (uiChild = 0; uiChild < uiNbChildren; uiChild++) {
     89 
     90             CInstanceConfigurableElement* pInstanceConfigurableChildElement =
     91                     static_cast<CInstanceConfigurableElement*>(getChild(uiChild));
     92 
     93             if (!pInstanceConfigurableChildElement->map(mapper, strError)) {
     94 
     95                 return false;
     96             }
     97         }
     98     }
     99 
    100     // End
    101     if (bHasMappingData) {
    102 
    103         mapper.mapEnd();
    104     }
    105     return true;
    106 }
    107 
    108 void CInstanceConfigurableElement::getListOfElementsWithMapping(
    109         std::list<const CConfigurableElement*>& configurableElementPath) const
    110 {
    111     const CTypeElement* pTypeElement = getTypeElement();
    112 
    113     if (pTypeElement && pTypeElement->hasMappingData()) {
    114 
    115         configurableElementPath.push_back(this);
    116     }
    117 
    118     base::getListOfElementsWithMapping(configurableElementPath);
    119 }
    120 
    121 // Element properties
    122 void CInstanceConfigurableElement::showProperties(std::string& strResult) const
    123 {
    124     base::showProperties(strResult);
    125 
    126     // Delegate to type element
    127     _pTypeElement->showProperties(strResult);
    128 }
    129 
    130 // Scalar or Array?
    131 bool CInstanceConfigurableElement::isScalar() const
    132 {
    133     return _pTypeElement->isScalar();
    134 }
    135 
    136 // Array Length
    137 uint32_t CInstanceConfigurableElement::getArrayLength() const
    138 {
    139     return _pTypeElement->getArrayLength();
    140 }
    141 
    142 // Sync to HW
    143 void CInstanceConfigurableElement::setSyncer(ISyncer* pSyncer)
    144 {
    145     assert(!_pSyncer);
    146 
    147     _pSyncer = pSyncer;
    148 }
    149 
    150 void CInstanceConfigurableElement::unsetSyncer()
    151 {
    152     _pSyncer = NULL;
    153 }
    154 
    155 // Syncer
    156 ISyncer* CInstanceConfigurableElement::getSyncer() const
    157 {
    158     if (_pSyncer) {
    159 
    160         return _pSyncer;
    161     }
    162     // Check parent
    163     return base::getSyncer();
    164 }
    165 
    166 // Syncer set (descendant)
    167 void CInstanceConfigurableElement::fillSyncerSetFromDescendant(CSyncerSet& syncerSet) const
    168 {
    169     if (_pSyncer) {
    170 
    171         syncerSet += _pSyncer;
    172     } else {
    173         // Continue digging
    174         base::fillSyncerSetFromDescendant(syncerSet);
    175     }
    176 }
    177 
    178 bool CInstanceConfigurableElement::sync(CParameterAccessContext& parameterAccessContext) const
    179 {
    180     if (!parameterAccessContext.getAutoSync()) {
    181 
    182         // AutoSync is disabled, do not perform the sync.
    183         // This is not an error, but the expected behavior so return true anyway.
    184         return true;
    185     }
    186     ISyncer* pSyncer = getSyncer();
    187 
    188     if (!pSyncer) {
    189 
    190         parameterAccessContext.setError("Unable to synchronize modification. No Syncer object associated to configurable element:");
    191 
    192         return false;
    193     }
    194     std::string strError;
    195 
    196     if (!pSyncer->sync(*parameterAccessContext.getParameterBlackboard(), false, strError)) {
    197 
    198         parameterAccessContext.setError(strError);
    199 
    200         return false;
    201     }
    202     return true;
    203 }
    204 
    205 // Check parameter access path well formed for leaf elements
    206 bool CInstanceConfigurableElement::checkPathExhausted(CPathNavigator& pathNavigator, CErrorContext& errorContext)
    207 {
    208     std::string* pStrChildName = pathNavigator.next();
    209 
    210     if (pStrChildName) {
    211 
    212         // Should be leaf element
    213         errorContext.setError("Path not found: " + pathNavigator.getCurrentPath());
    214 
    215         return false;
    216     }
    217     return true;
    218 }
    219 
    220 void CInstanceConfigurableElement::toXml(CXmlElement &xmlElement, CXmlSerializingContext &serializingContext) const
    221 {
    222     base::toXml(xmlElement, serializingContext);
    223     // Since Description belongs to the Type of Element, delegate it to the type element.
    224     getTypeElement()->setXmlDescriptionAttribute(xmlElement);
    225 }
    226