org.apache.sis.storage/org/apache/sis/storage/AbstractFeatureSet.html - sis-site - Git at Google

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 <div class="sub-title"><span class="module-label-in-type">Module</span>&nbsp;<a href="../../../../module-summary.html">org.apache.sis.storage</a></div>
 <div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">org.apache.sis.storage</a></div>
 <h1 title="Class AbstractFeatureSet" class="title">Class AbstractFeatureSet</h1>
 </div>
 <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>
 <div class="inheritance"><a href="AbstractResource.html" title="class in org.apache.sis.storage">AbstractResource</a>
 <div class="inheritance">AbstractFeatureSet</div>
 </div>
 </div>
 <section class="class-description" id="class-description">
 <dl class="notes">
 <dt>All Implemented Interfaces:</dt>
 <dd><code><a href="DataSet.html" title="interface in org.apache.sis.storage">DataSet</a></code>, <code><a href="FeatureSet.html" title="interface in org.apache.sis.storage">FeatureSet</a></code>, <code><a href="Resource.html" title="interface in org.apache.sis.storage">Resource</a></code></dd>
 </dl>
 <dl class="notes">
 <dt>Direct Known Subclasses:</dt>
 <dd><code><a href="aggregate/ConcatenatedFeatureSet.html" title="class in org.apache.sis.storage.aggregate">ConcatenatedFeatureSet</a></code>, <code><a href="aggregate/JoinFeatureSet.html" title="class in org.apache.sis.storage.aggregate">JoinFeatureSet</a></code></dd>
 </dl>
 <hr>
 <div class="type-signature"><span class="modifiers">public abstract class </span><span class="element-name type-name-label">AbstractFeatureSet</span>
 <span class="extends-implements">extends <a href="AbstractResource.html" title="class in org.apache.sis.storage">AbstractResource</a>
 implements <a href="FeatureSet.html" title="interface in org.apache.sis.storage">FeatureSet</a></span></div>
 <div class="block">Default implementations of several methods for classes that want to implement the <a href="FeatureSet.html" title="interface in org.apache.sis.storage"><code>FeatureSet</code></a> interface.
  Subclasses should override the following methods:

  <ul>
    <li><a href="FeatureSet.html#getType()"><code>FeatureSet.getType()</code></a> (mandatory)</li>
    <li><a href="FeatureSet.html#features(boolean)"><code>FeatureSet.features(boolean parallel)</code></a> (mandatory)</li>
    <li><a href="#getFeatureCount()"><code>getFeatureCount()</code></a> (recommended)</li>
    <li><a href="AbstractResource.html#getEnvelope()"><code>AbstractResource.getEnvelope()</code></a> (recommended)</li>
    <li><a href="#createMetadata()"><code>createMetadata()</code></a> (optional)</li>
  </ul>

  <h2 id="thread-safety-heading">Thread safety</h2>
  Default methods of this abstract class are thread-safe.
  Synchronization, when needed, uses <a href="AbstractResource.html#getSynchronizationLock()"><code>AbstractResource.getSynchronizationLock()</code></a>.</div>
 <dl class="notes">
 <dt>Since:</dt>
 <dd>1.2</dd>
 </dl>
 </section>
 <section class="summary">
 <ul class="summary-list">
 <!-- =========== FIELD SUMMARY =========== -->
 <li>
 <section class="field-summary" id="field-summary">
 <h2>Field Summary</h2>
 <div class="inherited-list">
 <h3 id="fields-inherited-from-class-AbstractResource">Fields inherited from class&nbsp;<a href="AbstractResource.html" title="class in org.apache.sis.storage">AbstractResource</a></h3>
 <code><a href="AbstractResource.html#listeners">listeners</a></code></div>
 </section>
 </li>
 <!-- ======== CONSTRUCTOR SUMMARY ======== -->
 <li>
 <section class="constructor-summary" id="constructor-summary">
 <h2>Constructor Summary</h2>
 <div class="caption"><span>Constructors</span></div>
 <div class="summary-table three-column-summary">
 <div class="table-header col-first">Modifier</div>
 <div class="table-header col-second">Constructor</div>
 <div class="table-header col-last">Description</div>
 <div class="col-first even-row-color"><code>protected </code></div>
 <div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E(org.apache.sis.storage.event.StoreListeners,boolean)" class="member-name-link">AbstractFeatureSet</a><wbr>(<a href="event/StoreListeners.html" title="class in org.apache.sis.storage.event">StoreListeners</a>&nbsp;parentListeners,
  boolean&nbsp;hidden)</code></div>
 <div class="col-last even-row-color">
 <div class="block">Creates a new resource which can send notifications to the given set of listeners.</div>
 </div>
 <div class="col-first odd-row-color"><code>protected </code></div>
 <div class="col-constructor-name odd-row-color"><code><a href="#%3Cinit%3E(org.apache.sis.storage.Resource)" class="member-name-link">AbstractFeatureSet</a><wbr>(<a href="Resource.html" title="interface in org.apache.sis.storage">Resource</a>&nbsp;parent)</code></div>
 <div class="col-last odd-row-color">
 <div class="block">Creates a new resource, potentially as a child of another resource.</div>
 </div>
 </div>
 </section>
 </li>
 <!-- ========== METHOD SUMMARY =========== -->
 <li>
 <section class="method-summary" id="method-summary">
 <h2>Method Summary</h2>
 <div id="method-summary-table">
 <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div>
 <div id="method-summary-table.tabpanel" role="tabpanel">
 <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-tab4"><code>protected <a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/metadata/Metadata.html" title="class or interface in org.opengis.metadata" class="external-link">Metadata</a></code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#createMetadata()" class="member-name-link">createMetadata</a>()</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
 <div class="block">Invoked in a synchronized block the first time that <code>getMetadata()</code> is invoked.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/OptionalLong.html" title="class or interface in java.util" class="external-link">OptionalLong</a></code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getFeatureCount()" class="member-name-link">getFeatureCount</a>()</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
 <div class="block">Returns an estimation of the number of features in this set, or empty if unknown.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Optional.html" title="class or interface in java.util" class="external-link">Optional</a><wbr>&lt;<a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/util/GenericName.html" title="class or interface in org.opengis.util" class="external-link">GenericName</a>&gt;</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getIdentifier()" class="member-name-link">getIdentifier</a>()</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
 <div class="block">Returns the feature type name as the identifier for this resource.</div>
 </div>
 </div>
 </div>
 </div>
 <div class="inherited-list">
 <h3 id="methods-inherited-from-class-AbstractResource">Methods inherited from class&nbsp;<a href="AbstractResource.html" title="class in org.apache.sis.storage">AbstractResource</a></h3>
 <code><a href="AbstractResource.html#addListener(java.lang.Class,org.apache.sis.storage.event.StoreListener)">addListener</a>, <a href="AbstractResource.html#clearCache()">clearCache</a>, <a href="AbstractResource.html#getEnvelope()">getEnvelope</a>, <a href="AbstractResource.html#getMetadata()">getMetadata</a>, <a href="AbstractResource.html#getSynchronizationLock()">getSynchronizationLock</a>, <a href="AbstractResource.html#removeListener(java.lang.Class,org.apache.sis.storage.event.StoreListener)">removeListener</a></code></div>
 <div class="inherited-list">
 <h3 id="methods-inherited-from-class-Object">Methods inherited from class&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3>
 <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div>
 <div class="inherited-list">
 <h3 id="methods-inherited-from-class-DataSet">Methods inherited from interface&nbsp;<a href="DataSet.html" title="interface in org.apache.sis.storage">DataSet</a></h3>
 <code><a href="DataSet.html#getEnvelope()">getEnvelope</a></code></div>
 <div class="inherited-list">
 <h3 id="methods-inherited-from-class-FeatureSet">Methods inherited from interface&nbsp;<a href="FeatureSet.html" title="interface in org.apache.sis.storage">FeatureSet</a></h3>
 <code><a href="FeatureSet.html#features(boolean)">features</a>, <a href="FeatureSet.html#getType()">getType</a>, <a href="FeatureSet.html#subset(org.apache.sis.storage.Query)">subset</a></code></div>
 <div class="inherited-list">
 <h3 id="methods-inherited-from-class-Resource">Methods inherited from interface&nbsp;<a href="Resource.html" title="interface in org.apache.sis.storage">Resource</a></h3>
 <code><a href="Resource.html#addListener(java.lang.Class,org.apache.sis.storage.event.StoreListener)">addListener</a>, <a href="Resource.html#getMetadata()">getMetadata</a>, <a href="Resource.html#removeListener(java.lang.Class,org.apache.sis.storage.event.StoreListener)">removeListener</a></code></div>
 </section>
 </li>
 </ul>
 </section>
 <section class="details">
 <ul class="details-list">
 <!-- ========= CONSTRUCTOR DETAIL ======== -->
 <li>
 <section class="constructor-details" id="constructor-detail">
 <h2>Constructor Details</h2>
 <ul class="member-list">
 <li>
 <section class="detail" id="&lt;init&gt;(org.apache.sis.storage.Resource)">
 <h3>AbstractFeatureSet</h3>
 <div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="element-name">AbstractFeatureSet</span><wbr><span class="parameters">(<a href="Resource.html" title="interface in org.apache.sis.storage">Resource</a>&nbsp;parent)</span></div>
 <div class="block">Creates a new resource, potentially as a child of another resource.
  The parent resource is typically, but not necessarily, an <a href="Aggregate.html" title="interface in org.apache.sis.storage"><code>Aggregate</code></a>.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>parent</code> - the parent resource, or <code>null</code> if none.</dd>
 <dt>Since:</dt>
 <dd>1.4</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="&lt;init&gt;(org.apache.sis.storage.event.StoreListeners,boolean)">
 <h3>AbstractFeatureSet</h3>
 <div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="element-name">AbstractFeatureSet</span><wbr><span class="parameters">(<a href="event/StoreListeners.html" title="class in org.apache.sis.storage.event">StoreListeners</a>&nbsp;parentListeners,
  boolean&nbsp;hidden)</span></div>
 <div class="block">Creates a new resource which can send notifications to the given set of listeners.
  If <code>hidden</code> is <code>false</code> (the recommended value), then this resource will have its own set of
  listeners with this resource declared as the <a href="event/StoreListeners.html#getSource()">source of events</a>.
  It will be possible to add and remove listeners independently from the set of parent listeners.
  Conversely if <code>hidden</code> is <code>true</code>, then the given listeners will be used directly
  and this resource will not appear as the source of any event.

  <p>In any cases, the listeners of all parents (ultimately the data store that created this resource)
  will always be notified, either directly if <code>hidden</code> is <code>true</code>
  or indirectly if <code>hidden</code> is <code>false</code>.</p></div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>parentListeners</code> - listeners of the parent resource, or <code>null</code> if none.
          This is usually the listeners of the <a href="DataStore.html" title="class in org.apache.sis.storage"><code>DataStore</code></a> that created this resource.</dd>
 <dd><code>hidden</code> - <code>false</code> if this resource shall use its own <a href="event/StoreListeners.html" title="class in org.apache.sis.storage.event"><code>StoreListeners</code></a>
          with the specified parent, or <code>true</code> for using <code>parentListeners</code> directly.</dd>
 </dl>
 </section>
 </li>
 </ul>
 </section>
 </li>
 <!-- ============ METHOD DETAIL ========== -->
 <li>
 <section class="method-details" id="method-detail">
 <h2>Method Details</h2>
 <ul class="member-list">
 <li>
 <section class="detail" id="getIdentifier()">
 <h3>getIdentifier</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Optional.html" title="class or interface in java.util" class="external-link">Optional</a>&lt;<a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/util/GenericName.html" title="class or interface in org.opengis.util" class="external-link">GenericName</a>&gt;</span>&nbsp;<span class="element-name">getIdentifier</span>()
                                     throws <span class="exceptions"><a href="DataStoreException.html" title="class in org.apache.sis.storage">DataStoreException</a></span></div>
 <div class="block">Returns the feature type name as the identifier for this resource.
  Subclasses should override if they can provide a more specific identifier.</div>
 <dl class="notes">
 <dt>Specified by:</dt>
 <dd><code><a href="Resource.html#getIdentifier()">getIdentifier</a></code>&nbsp;in interface&nbsp;<code><a href="Resource.html" title="interface in org.apache.sis.storage">Resource</a></code></dd>
 <dt>Overrides:</dt>
 <dd><code><a href="AbstractResource.html#getIdentifier()">getIdentifier</a></code>&nbsp;in class&nbsp;<code><a href="AbstractResource.html" title="class in org.apache.sis.storage">AbstractResource</a></code></dd>
 <dt>Returns:</dt>
 <dd>the resource identifier inferred from feature type.</dd>
 <dt>Throws:</dt>
 <dd><code><a href="DataStoreException.html" title="class in org.apache.sis.storage">DataStoreException</a></code> - if an error occurred while fetching the identifier.</dd>
 <dt>See Also:</dt>
 <dd>
 <ul class="tag-list">
 <li><a href="DataStore.html#getIdentifier()"><code>DataStore.getIdentifier()</code></a></li>
 </ul>
 </dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getFeatureCount()">
 <h3>getFeatureCount</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/OptionalLong.html" title="class or interface in java.util" class="external-link">OptionalLong</a></span>&nbsp;<span class="element-name">getFeatureCount</span>()</div>
 <div class="block">Returns an estimation of the number of features in this set, or empty if unknown.
  The default implementation returns an empty value.</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>estimation of the number of features.</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="createMetadata()">
 <h3>createMetadata</h3>
 <div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="return-type"><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/metadata/Metadata.html" title="class or interface in org.opengis.metadata" class="external-link">Metadata</a></span>&nbsp;<span class="element-name">createMetadata</span>()
                            throws <span class="exceptions"><a href="DataStoreException.html" title="class in org.apache.sis.storage">DataStoreException</a></span></div>
 <div class="block">Invoked in a synchronized block the first time that <code>getMetadata()</code> is invoked.
  The default implementation populates metadata based on information provided by
  <a href="#getIdentifier()"><code>getIdentifier()</code></a>,
  <a href="AbstractResource.html#getEnvelope()"><code>getEnvelope()</code></a>,
  <a href="FeatureSet.html#getType()"><code>getType()</code></a> and
  <a href="#getFeatureCount()"><code>getFeatureCount()</code></a>.
  Subclasses should override if they can provide more information.
  The default value can be completed by casting to <a href="../../../../../org.apache.sis.metadata/org/apache/sis/metadata/iso/DefaultMetadata.html" title="class in org.apache.sis.metadata.iso"><code>DefaultMetadata</code></a>.</div>
 <dl class="notes">
 <dt>Overrides:</dt>
 <dd><code><a href="AbstractResource.html#createMetadata()">createMetadata</a></code>&nbsp;in class&nbsp;<code><a href="AbstractResource.html" title="class in org.apache.sis.storage">AbstractResource</a></code></dd>
 <dt>Returns:</dt>
 <dd>the newly created metadata, or <code>null</code> if unknown.</dd>
 <dt>Throws:</dt>
 <dd><code><a href="DataStoreException.html" title="class in org.apache.sis.storage">DataStoreException</a></code> - if an error occurred while reading metadata from this resource.</dd>
 </dl>
 </section>
 </li>
 </ul>
 </section>
 </li>
 </ul>
 </section>
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