Lines 3665-3676
header file definitions of a few UDF related structures and types. For most
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UDFs and plugins, a mere <code class="code">#include "sphinxudf.h"</code>, like in the example, |
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UDFs and plugins, a mere <code class="code">#include "sphinxudf.h"</code>, like in the example, |
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should be completely sufficient, too. However, if you're writing a ranking function and |
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should be completely sufficient, too. However, if you're writing a ranking function and |
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need to access the ranking signals (factors) data from within the UDF, you will |
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need to access the ranking signals (factors) data from within the UDF, you will |
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also need to compile and link with <code class="filename">src/sphinxudf.c</code> (also |
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also need to compile and link with <code class="filename">src/sphinxudf.cpp</code> (also |
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available in our source code), because the <span class="emphasis"><em>implementations</em></span> |
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available in our source code), because the <span class="emphasis"><em>implementations</em></span> |
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of the fuctions that let you access the signal data from within the UDF reside |
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of the fuctions that let you access the signal data from within the UDF reside |
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in that file. |
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in that file. |
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</p><p> |
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</p><p> |
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Both <code class="filename">sphinxudf.h</code> header and <code class="filename">sphinxudf.c</code> |
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Both <code class="filename">sphinxudf.h</code> header and <code class="filename">sphinxudf.cpp</code> |
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are standalone. So you can copy around those files only; they do not depend |
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are standalone. So you can copy around those files only; they do not depend |
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on any other bits of Sphinx source code. |
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on any other bits of Sphinx source code. |
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</p><p> |
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</p><p> |
Lines 3888-3895
Just as with UDFs, you want to include <code class="filename">src/sphinxudf.h</c
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header file. At the very least, you will need the SPH_UDF_VERSION |
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header file. At the very least, you will need the SPH_UDF_VERSION |
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constant to implement a proper version function. Depending on the specific |
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constant to implement a proper version function. Depending on the specific |
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plugin type, you might or might not need to link your plugin with |
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plugin type, you might or might not need to link your plugin with |
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<code class="filename">src/sphinxudf.c</code>. However, as of 2.2.2-beta all |
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<code class="filename">src/sphinxudf.cpp</code>. However, as of 2.2.2-beta all |
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the functions implemented in <code class="filename">sphinxudf.c</code> are about |
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the functions implemented in <code class="filename">sphinxudf.cpp</code> are about |
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unpacking the PACKEDFACTORS() blob, and no plugin types are exposed to that |
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unpacking the PACKEDFACTORS() blob, and no plugin types are exposed to that |
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kind of data. So currently, you would never need to link with the C-file, |
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kind of data. So currently, you would never need to link with the C-file, |
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just the header would be sufficient. (In fact, if you copy over the |
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just the header would be sufficient. (In fact, if you copy over the |