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| <h2 title="Interface PartiallyOrderedSet.Ordering" class="title">Interface PartiallyOrderedSet.Ordering<E></h2> |
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| <pre>public static interface <span class="typeNameLabel">PartiallyOrderedSet.Ordering<E></span></pre> |
| <div class="block">Ordering relation. |
| |
| <p>To obey the constraints of the partially-ordered set, the function |
| must be consistent with the reflexive, anti-symmetric, and transitive |
| properties required by a partially ordered set.</p> |
| |
| <p>For instance, if <code>ordering(foo, foo)</code> returned false for any |
| not-null value of foo, it would violate the reflexive property.</p> |
| |
| <p>If an ordering violates any of these required properties, the behavior |
| of a <a href="PartiallyOrderedSet.html" title="class in org.apache.calcite.util"><code>PartiallyOrderedSet</code></a> is unspecified. (But mayhem is |
| likely.)</p></div> |
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| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#lessThan(E,E)">lessThan</a></span>​(<a href="PartiallyOrderedSet.Ordering.html" title="type parameter in PartiallyOrderedSet.Ordering">E</a> e1, |
| <a href="PartiallyOrderedSet.Ordering.html" title="type parameter in PartiallyOrderedSet.Ordering">E</a> e2)</code></th> |
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| <div class="block">Returns whether element e1 is ≤ e2 according to |
| the relation that defines a partially-ordered set.</div> |
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| <h4>lessThan</h4> |
| <pre class="methodSignature">boolean lessThan​(<a href="PartiallyOrderedSet.Ordering.html" title="type parameter in PartiallyOrderedSet.Ordering">E</a> e1, |
| <a href="PartiallyOrderedSet.Ordering.html" title="type parameter in PartiallyOrderedSet.Ordering">E</a> e2)</pre> |
| <div class="block">Returns whether element e1 is ≤ e2 according to |
| the relation that defines a partially-ordered set.</div> |
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| <dd><code>e1</code> - Element 1</dd> |
| <dd><code>e2</code> - Element 2</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Whether element 1 is ≤ element 2</dd> |
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