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<section id="dataset">
<h1>Dataset</h1>
<dl>
<dt class="sig sig-object cpp">
<span class="target" id="group__harp__dataset"></span><em><span class="pre">group</span></em> <span class="sig-name descname"><span class="pre">harp_dataset</span></span></dt>
<dd><p>The HARP harp_dataset module contains everything regarding HARP datasets.</p>
<p>A Dataset contains a list of references to HARP products together with optional metadata on each product. The primary reference to a product is the value of the ‘source_product’ global attribute of a HARP product. </p>
<div class="breathe-sectiondef docutils container">
<p class="breathe-sectiondef-title rubric" id="breathe-section-title-typedefs">Typedefs</p>
<dl class="cpp type">
<dt class="sig sig-object cpp" id="_CPPv412harp_dataset">
<span id="_CPPv312harp_dataset"></span><span id="_CPPv212harp_dataset"></span><span id="harp_dataset"></span><span class="target" id="group__harp__dataset_1gad68088d6c638ed1a84703b99773caa52"></span><span class="k"><span class="pre">typedef</span></span><span class="w"> </span><span class="k"><span class="pre">struct</span></span><span class="w"> </span><a class="reference internal" href="#_CPPv419harp_dataset_struct" title="harp_dataset_struct"><span class="n"><span class="pre">harp_dataset_struct</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">harp_dataset</span></span></span><br /></dt>
<dd><p>HARP Dataset typedef </p>
</dd></dl>
</div>
<div class="breathe-sectiondef docutils container">
<p class="breathe-sectiondef-title rubric" id="breathe-section-title-functions">Functions</p>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv416harp_dataset_newPP12harp_dataset">
<span id="_CPPv316harp_dataset_newPP12harp_dataset"></span><span id="_CPPv216harp_dataset_newPP12harp_dataset"></span><span id="harp_dataset_new__harp_datasetPP"></span><span class="target" id="group__harp__dataset_1ga35ac46cdc9370a916fd14ef144051f3e"></span><span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">harp_dataset_new</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="#_CPPv412harp_dataset" title="harp_dataset"><span class="n"><span class="pre">harp_dataset</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">new_dataset</span></span><span class="sig-paren">)</span><br /></dt>
<dd><p>Create new HARP dataset. The metadata will be initialized with zero product metadata elements. </p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><p><strong>new_dataset</strong> – Pointer to the C variable where the new HARP product metadata will be stored. </p>
</dd>
<dt class="field-even">Returns</dt>
<dd class="field-even"><p><ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">0</span></code>, Success. </p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">-1</span></code>, Error occurred (check <a class="reference internal" href="libharp_error.html#group__harp__error_1gab2eeb46528306c6799632d1e800c4c36"><span class="std std-ref">harp_errno</span></a>). </p></li>
</ul>
</p>
</dd>
</dl>
</dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv419harp_dataset_deleteP12harp_dataset">
<span id="_CPPv319harp_dataset_deleteP12harp_dataset"></span><span id="_CPPv219harp_dataset_deleteP12harp_dataset"></span><span id="harp_dataset_delete__harp_datasetP"></span><span class="target" id="group__harp__dataset_1gabee5947f6968607661a761a5ac4c4ca7"></span><span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">harp_dataset_delete</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="#_CPPv412harp_dataset" title="harp_dataset"><span class="n"><span class="pre">harp_dataset</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">dataset</span></span><span class="sig-paren">)</span><br /></dt>
<dd><p>Delete HARP dataset. </p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><p><strong>dataset</strong> – Pointer to the dataset to free. </p>
</dd>
</dl>
</dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv418harp_dataset_printP12harp_datasetPFiPKczE">
<span id="_CPPv318harp_dataset_printP12harp_datasetPFiPKczE"></span><span id="_CPPv218harp_dataset_printP12harp_datasetPFiPKczE"></span><span class="target" id="group__harp__dataset_1ga9b2f2eb09902c7416baeff016491cbd6"></span><span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">harp_dataset_print</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="#_CPPv412harp_dataset" title="harp_dataset"><span class="n"><span class="pre">harp_dataset</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">dataset</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="p"><span class="pre">(</span></span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">print</span></span><span class="p"><span class="pre">)</span></span><span class="p"><span class="pre">(</span></span><span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="p"><span class="pre">*</span></span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="p"><span class="pre">...</span></span><span class="p"><span class="pre">)</span></span><span class="sig-paren">)</span><br /></dt>
<dd><p>Print HARP dataset. </p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>dataset</strong> – Pointer to the dataset to print. </p></li>
<li><p><strong>print</strong> – Pointer to the function that should be used for printing. </p></li>
</ul>
</dd>
</dl>
</dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv419harp_dataset_importP12harp_datasetPKcPKc">
<span id="_CPPv319harp_dataset_importP12harp_datasetPKcPKc"></span><span id="_CPPv219harp_dataset_importP12harp_datasetPKcPKc"></span><span id="harp_dataset_import__harp_datasetP.cCP.cCP"></span><span class="target" id="group__harp__dataset_1gaf09a7b6ceec6c24ff158aae030c128fa"></span><span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">harp_dataset_import</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="#_CPPv412harp_dataset" title="harp_dataset"><span class="n"><span class="pre">harp_dataset</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">dataset</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">path</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">options</span></span><span class="sig-paren">)</span><br /></dt>
<dd><p>Import metadata for products into the dataset. If path is a directory then all files (recursively) from that directory are added to the dataset. If path references a .pth file then the file paths from that text file (one per line) are imported. These file paths can be absolute or relative and can point to files, directories, or other .pth files. If path references a product file then that file is added to the dataset. Trying to add a file that is not supported by HARP will result in an error. Directories and files whose names start with a ‘.’ will be ignored.</p>
<p>Note that datasets cannot have multiple entries with the same ‘source_product’ value. Therefore, for each product where the dataset already contained an entry with the same ‘source_product’ value, the metadata of that entry is replaced with the new metadata (instead of adding a new entry to the dataset or raising an error).</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>dataset</strong> – Dataset into which to import the metadata. </p></li>
<li><p><strong>path</strong> – Path to either a directory containing product files, a .pth file, or a single product file. </p></li>
<li><p><strong>options</strong> – Ingestion module specific options (optional); should be specified as a semi-colon separated string of key=value pair; only used for product files that are not already in HARP format. </p></li>
</ul>
</dd>
<dt class="field-even">Returns</dt>
<dd class="field-even"><p><ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">0</span></code>, Success. </p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">-1</span></code>, Error occurred (check <a class="reference internal" href="libharp_error.html#group__harp__error_1gab2eeb46528306c6799632d1e800c4c36"><span class="std std-ref">harp_errno</span></a>). </p></li>
</ul>
</p>
</dd>
</dl>
</dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv442harp_dataset_get_index_from_source_productP12harp_datasetPKcPl">
<span id="_CPPv342harp_dataset_get_index_from_source_productP12harp_datasetPKcPl"></span><span id="_CPPv242harp_dataset_get_index_from_source_productP12harp_datasetPKcPl"></span><span id="harp_dataset_get_index_from_source_product__harp_datasetP.cCP.lP"></span><span class="target" id="group__harp__dataset_1gab92a6e6a9952685cd7cf1aa0036c5ce7"></span><span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">harp_dataset_get_index_from_source_product</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="#_CPPv412harp_dataset" title="harp_dataset"><span class="n"><span class="pre">harp_dataset</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">dataset</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">source_product</span></span>, <span class="kt"><span class="pre">long</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">index</span></span><span class="sig-paren">)</span><br /></dt>
<dd><p>Lookup the index of source_product in the given dataset. </p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>dataset</strong> – Dataset to get index in. </p></li>
<li><p><strong>source_product</strong> – Source product reference. </p></li>
<li><p><strong>index</strong> – Pointer to the C variable where the index in the dataset for the product is returned. </p></li>
</ul>
</dd>
<dt class="field-even">Returns</dt>
<dd class="field-even"><p><ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">0</span></code>, Success. </p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">-1</span></code>, Error occurred (check <a class="reference internal" href="libharp_error.html#group__harp__error_1gab2eeb46528306c6799632d1e800c4c36"><span class="std std-ref">harp_errno</span></a>). </p></li>
</ul>
</p>
</dd>
</dl>
</dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv424harp_dataset_has_productP12harp_datasetPKc">
<span id="_CPPv324harp_dataset_has_productP12harp_datasetPKc"></span><span id="_CPPv224harp_dataset_has_productP12harp_datasetPKc"></span><span id="harp_dataset_has_product__harp_datasetP.cCP"></span><span class="target" id="group__harp__dataset_1ga58e6344eb1d20b96e5ec51063c5a2b95"></span><span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">harp_dataset_has_product</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="#_CPPv412harp_dataset" title="harp_dataset"><span class="n"><span class="pre">harp_dataset</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">dataset</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">source_product</span></span><span class="sig-paren">)</span><br /></dt>
<dd><p>Test if dataset contains an entry with the specified source product reference. </p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>dataset</strong> – Dataset in which to find the product. </p></li>
<li><p><strong>source_product</strong> – Source product reference. </p></li>
</ul>
</dd>
<dt class="field-even">Returns</dt>
<dd class="field-even"><p><ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">0</span></code>, Dataset does not contain a product with the specific source reference. </p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">1</span></code>, Dataset contains a product with the specific source reference. </p></li>
</ul>
</p>
</dd>
</dl>
</dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv424harp_dataset_add_productP12harp_datasetPKcP21harp_product_metadata">
<span id="_CPPv324harp_dataset_add_productP12harp_datasetPKcP21harp_product_metadata"></span><span id="_CPPv224harp_dataset_add_productP12harp_datasetPKcP21harp_product_metadata"></span><span id="harp_dataset_add_product__harp_datasetP.cCP.harp_product_metadataP"></span><span class="target" id="group__harp__dataset_1gaeb9189ed0ccc571893ecf40d06566044"></span><span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">harp_dataset_add_product</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="#_CPPv412harp_dataset" title="harp_dataset"><span class="n"><span class="pre">harp_dataset</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">dataset</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">source_product</span></span>, <a class="reference internal" href="libharp_product_metadata.html#_CPPv421harp_product_metadata" title="harp_product_metadata"><span class="n"><span class="pre">harp_product_metadata</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">metadata</span></span><span class="sig-paren">)</span><br /></dt>
<dd><p>Add a product reference to a dataset. </p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>dataset</strong> – Dataset in which to add a new entry. </p></li>
<li><p><strong>source_product</strong> – The source product reference of the new entry. </p></li>
<li><p><strong>metadata</strong> – The product metadata of the new entry (can be NULL); the dataset is the new owner of metadata. </p></li>
</ul>
</dd>
<dt class="field-even">Returns</dt>
<dd class="field-even"><p><ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">0</span></code>, Success. </p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">-1</span></code>, Error occurred (check <a class="reference internal" href="libharp_error.html#group__harp__error_1gab2eeb46528306c6799632d1e800c4c36"><span class="std std-ref">harp_errno</span></a>). </p></li>
</ul>
</p>
</dd>
</dl>
</dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv422harp_dataset_prefilterP12harp_datasetPKc">
<span id="_CPPv322harp_dataset_prefilterP12harp_datasetPKc"></span><span id="_CPPv222harp_dataset_prefilterP12harp_datasetPKc"></span><span id="harp_dataset_prefilter__harp_datasetP.cCP"></span><span class="target" id="group__harp__dataset_1gaeb24520817eac73ff29ebd0beef382db"></span><span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">harp_dataset_prefilter</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="#_CPPv412harp_dataset" title="harp_dataset"><span class="n"><span class="pre">harp_dataset</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">dataset</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">operations</span></span><span class="sig-paren">)</span><br /></dt>
<dd><p>Filter products in dataset based on operations. Remove any entries from the dataset that can already be discarded based on filters at the start of the operations string. This includes comparisons against datetime/datetime_start/datetime_stop and collocate_left/collocate_right operations. The filters will be matched against the metadata in the dataset. The datatime_start and datetime_stop attributes will be used for the datetime filters and the source_product attribute for the collocation filters. </p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>dataset</strong> – Dataset that should be filtered. </p></li>
<li><p><strong>operations</strong> – Operations to execute; should be specified as a semi-colon separated string of operations. </p></li>
</ul>
</dd>
<dt class="field-even">Returns</dt>
<dd class="field-even"><p><ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">0</span></code>, Success. </p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">-1</span></code>, Error occurred (check <a class="reference internal" href="libharp_error.html#group__harp__error_1gab2eeb46528306c6799632d1e800c4c36"><span class="std std-ref">harp_errno</span></a>). </p></li>
</ul>
</p>
</dd>
</dl>
</dd></dl>
</div>
<dl class="cpp struct">
<dt class="sig sig-object cpp" id="_CPPv419harp_dataset_struct">
<span id="_CPPv319harp_dataset_struct"></span><span id="_CPPv219harp_dataset_struct"></span><span id="harp_dataset_struct"></span><span class="target" id="structharp__dataset__struct"></span><span class="k"><span class="pre">struct</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">harp_dataset_struct</span></span></span><br /></dt>
<dd><div class="docutils container">
<em>#include <harp.h></em></div>
<p>HARP Dataset struct </p>
</dd></dl>
</dd></dl>
</section>
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