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| <div class="sub-title"><span class="module-label-in-type">Module</span> <a href="../../../../module-summary.html">org.apache.sis.feature</a></div> |
| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.sis.filter</a></div> |
| <h1 title="Interface Expression" class="title">Interface Expression<R,<wbr>V></h1> |
| </div> |
| <section class="class-description" id="class-description"> |
| <dl class="notes"> |
| <dt>Type Parameters:</dt> |
| <dd><code>R</code> - the type of resources (e.g. <code>Feature</code>) used as inputs.</dd> |
| <dd><code>V</code> - the type of values computed by the expression.</dd> |
| </dl> |
| <dl class="notes"> |
| <dt>All Superinterfaces:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/function/Function.html" title="class or interface in java.util.function" class="external-link">Function</a><R,<wbr>V></code></dd> |
| </dl> |
| <dl class="notes"> |
| <dt>All Known Subinterfaces:</dt> |
| <dd><code><a href="Optimization.OnExpression.html" title="interface in org.apache.sis.filter">Optimization.OnExpression</a><R,<wbr>V></code></dd> |
| </dl> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public interface </span><span class="element-name type-name-label">Expression<R,<wbr>V></span><span class="extends-implements"> |
| extends <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/function/Function.html" title="class or interface in java.util.function" class="external-link">Function</a><R,<wbr>V></span></div> |
| <div class="block">A literal or a named procedure that performs a distinct computation. |
| |
| <div class="warning"><b>Upcoming API change</b><br> |
| This is a placeholder for a GeoAPI 3.1 interface not yet released. |
| In a future version, all usages of this interface may be replaced |
| by an interface of the same name but in the <code>org.opengis.filter</code> package |
| instead of <code>org.apache.sis.filter</code>. |
| </div></div> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <li> |
| <section class="method-summary" id="method-summary"> |
| <h2>Method Summary</h2> |
| <div id="method-summary-table"> |
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| <div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0"> |
| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Method</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="Expression.html" title="type parameter in Expression">V</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#apply(R)" class="member-name-link">apply</a><wbr>(<a href="Expression.html" title="type parameter in Expression">R</a> input)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <div class="block">Evaluates the expression value based on the content of the given object.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/util/ScopedName.html" title="class or interface in org.opengis.util" class="external-link">ScopedName</a></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#getFunctionName()" class="member-name-link">getFunctionName</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <div class="block">Returns the name of the function to be called.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><wbr><<a href="Expression.html" title="interface in org.apache.sis.filter">Expression</a><<a href="Expression.html" title="type parameter in Expression">R</a>,<wbr>?>></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#getParameters()" class="member-name-link">getParameters</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <div class="block">Returns the list sub-expressions that will be evaluated to provide the parameters to the function.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Class.html" title="class or interface in java.lang" class="external-link">Class</a><wbr><? super <a href="Expression.html" title="type parameter in Expression">R</a>></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#getResourceClass()" class="member-name-link">getResourceClass</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <div class="block">Returns the class of resources expected by this expression.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><N> <a href="Expression.html" title="interface in org.apache.sis.filter">Expression</a><wbr><<a href="Expression.html" title="type parameter in Expression">R</a>,<wbr>N></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#toValueType(java.lang.Class)" class="member-name-link">toValueType</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Class.html" title="class or interface in java.lang" class="external-link">Class</a><N> type)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <div class="block">Returns an expression doing the same evaluation than this method, but returning results |
| as values of the specified type.</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-Function">Methods inherited from interface <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/function/Function.html" title="class or interface in java.util.function" class="external-link">Function</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/function/Function.html#andThen(java.util.function.Function)" title="class or interface in java.util.function" class="external-link">andThen</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/function/Function.html#compose(java.util.function.Function)" title="class or interface in java.util.function" class="external-link">compose</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method-detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="getFunctionName()"> |
| <h3>getFunctionName</h3> |
| <div class="member-signature"><span class="return-type"><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/util/ScopedName.html" title="class or interface in org.opengis.util" class="external-link">ScopedName</a></span> <span class="element-name">getFunctionName</span>()</div> |
| <div class="block">Returns the name of the function to be called.</div> |
| <dl class="notes"> |
| <dt>Returns:</dt> |
| <dd>name of the function to be called.</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getResourceClass()"> |
| <h3>getResourceClass</h3> |
| <div class="member-signature"><span class="return-type"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Class.html" title="class or interface in java.lang" class="external-link">Class</a><? super <a href="Expression.html" title="type parameter in Expression">R</a>></span> <span class="element-name">getResourceClass</span>()</div> |
| <div class="block">Returns the class of resources expected by this expression.</div> |
| <dl class="notes"> |
| <dt>Returns:</dt> |
| <dd>type of resources accepted by this expression.</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getParameters()"> |
| <h3>getParameters</h3> |
| <div class="member-signature"><span class="return-type"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="Expression.html" title="interface in org.apache.sis.filter">Expression</a><<a href="Expression.html" title="type parameter in Expression">R</a>,<wbr>?>></span> <span class="element-name">getParameters</span>()</div> |
| <div class="block">Returns the list sub-expressions that will be evaluated to provide the parameters to the function.</div> |
| <dl class="notes"> |
| <dt>Returns:</dt> |
| <dd>the sub-expressions to be evaluated, or an empty list if none.</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="apply(R)"> |
| <h3 id="apply(java.lang.Object)">apply</h3> |
| <div class="member-signature"><span class="return-type"><a href="Expression.html" title="type parameter in Expression">V</a></span> <span class="element-name">apply</span><wbr><span class="parameters">(<a href="Expression.html" title="type parameter in Expression">R</a> input)</span></div> |
| <div class="block">Evaluates the expression value based on the content of the given object.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/function/Function.html#apply(T)" title="class or interface in java.util.function" class="external-link">apply</a></code> in interface <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/function/Function.html" title="class or interface in java.util.function" class="external-link">Function</a><<a href="Expression.html" title="type parameter in Expression">R</a>,<wbr><a href="Expression.html" title="type parameter in Expression">V</a>></code></dd> |
| <dt>Parameters:</dt> |
| <dd><code>input</code> - the object to be evaluated by the expression. |
| Can be <code>null</code> if this expression allows null values.</dd> |
| <dt>Returns:</dt> |
| <dd>value computed by the expression.</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/NullPointerException.html" title="class or interface in java.lang" class="external-link">NullPointerException</a></code> - if <code>input</code> is null and this expression requires non-null values.</dd> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/IllegalArgumentException.html" title="class or interface in java.lang" class="external-link">IllegalArgumentException</a></code> - if the expression can not be applied on the given object.</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="toValueType(java.lang.Class)"> |
| <h3>toValueType</h3> |
| <div class="member-signature"><span class="type-parameters"><N></span> <span class="return-type"><a href="Expression.html" title="interface in org.apache.sis.filter">Expression</a><<a href="Expression.html" title="type parameter in Expression">R</a>,<wbr>N></span> <span class="element-name">toValueType</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Class.html" title="class or interface in java.lang" class="external-link">Class</a><N> type)</span></div> |
| <div class="block">Returns an expression doing the same evaluation than this method, but returning results |
| as values of the specified type.</div> |
| <dl class="notes"> |
| <dt>Type Parameters:</dt> |
| <dd><code>N</code> - compile-time value of <code>type</code>.</dd> |
| <dt>Parameters:</dt> |
| <dd><code>type</code> - desired type of expression results.</dd> |
| <dt>Returns:</dt> |
| <dd>expression doing the same operation this this expression but with results of the specified type.</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassCastException.html" title="class or interface in java.lang" class="external-link">ClassCastException</a></code> - if the specified type is not a target type supported by implementation.</dd> |
| </dl> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
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