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| <div class="sub-title"><span class="module-label-in-type">Module</span> <a href="../../../../../module-summary.html">org.apache.jena.arq</a></div> |
| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.jena.sparql.expr</a></div> |
| <h1 title="Interface Unstable" class="title">Interface Unstable</h1> |
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| <section class="class-description" id="class-description"> |
| <dl class="notes"> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="E_BNode.html" title="class in org.apache.jena.sparql.expr">E_BNode</a></code>, <code><a href="E_Random.html" title="class in org.apache.jena.sparql.expr">E_Random</a></code>, <code><a href="E_StrUUID.html" title="class in org.apache.jena.sparql.expr">E_StrUUID</a></code>, <code><a href="E_UUID.html" title="class in org.apache.jena.sparql.expr">E_UUID</a></code></dd> |
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| <div class="type-signature"><span class="modifiers">public interface </span><span class="element-name type-name-label">Unstable</span></div> |
| <div class="block">Marker interface for a function that is "unstable". |
| That is, it isn't really a function. |
| <p> |
| A function returns the same result value when called with the same arguments. |
| Some "functions" do not obey this condition on functions; they look like functions but aren't. |
| RAND, BNODE, UUID, STRUUID |
| <p> |
| There are also "functional forms" that have special evaluation rule. These return the same value when given the same arguments. |
| These are "stable". |
| <a href="https://www.w3.org/TR/sparql11-query/#func-forms"></a></div> |
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