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 <h2 title="Class DefaultRequirement" class="title">Class DefaultRequirement</h2>
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 <pre>public class <span class="typeNameLabel">DefaultRequirement</span>
 extends <a href="../ISOMetadata.html" title="class in org.apache.sis.metadata.iso">ISOMetadata</a>
 implements <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Requirement</a></pre>
 <div class="block">Requirement to be satisfied by the planned data acquisition.
  The following properties are mandatory or conditional (i.e. mandatory under some circumstances)
  in a well-formed metadata according ISO 19115:

  <div class="preformat"><code>MI_Requirement</code>
  <code>  ├─identifier………………………………………………………</code> Unique name, or code, for the requirement.
  <code>  │   └─code……………………………………………………………</code> Alphanumeric value identifying an instance in the namespace.
  <code>  ├─requestor…………………………………………………………</code> Origin of requirement.
  <code>  │   ├─party…………………………………………………………</code> Information about the parties.
  <code>  │   │   └─name…………………………………………………</code> Name of the party.
  <code>  │   └─role……………………………………………………………</code> Function performed by the responsible party.
  <code>  ├─recipient…………………………………………………………</code> Person(s), or body(ies), to receive results of requirement.
  <code>  ├─priority……………………………………………………………</code> Relative ordered importance, or urgency, of the requirement.
  <code>  ├─requestedDate………………………………………………</code> Required or preferred acquisition date and time.
  <code>  │   ├─requestedDateOfCollection……</code> Preferred date and time of collection.
  <code>  │   └─latestAcceptableDate…………………</code> Latest date and time collection must be completed.
  <code>  └─expiryDate………………………………………………………</code> Date and time after which collection is no longer valid.</div>

  <p><b>Limitations:</b></p>
  <ul>
    <li>Instances of this class are not synchronized for multi-threading.
        Synchronization, if needed, is caller's responsibility.</li>
    <li>Serialized objects of this class are not guaranteed to be compatible with future Apache SIS releases.
        Serialization support is appropriate for short term storage or RMI between applications running the
        same version of Apache SIS. For long term storage, use <a href="../../../xml/XML.html" title="class in org.apache.sis.xml"><code>XML</code></a> instead.</li>
  </ul></div>
 <dl>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>0.3</dd>
 <dt><span class="seeLabel">See Also:</span></dt>
 <dd><a href="../../../../../../serialized-form.html#org.apache.sis.metadata.iso.acquisition.DefaultRequirement">Serialized Form</a></dd>

 <p><font size="-1">Defined in the <code>sis-metadata</code> module</font></p>
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 <th class="colFirst" scope="col">Constructor</th>
 <th class="colLast" scope="col">Description</th>
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 <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">DefaultRequirement</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Constructs an initially empty requirement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.opengis.metadata.acquisition.Requirement)">DefaultRequirement</a></span>&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Requirement</a>&nbsp;object)</code></th>
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 <div class="block">Constructs a new instance initialized with the values from the specified metadata object.</div>
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 <td class="colFirst"><code>static <a href="DefaultRequirement.html" title="class in org.apache.sis.metadata.iso.acquisition">DefaultRequirement</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#castOrCopy(org.opengis.metadata.acquisition.Requirement)">castOrCopy</a></span>&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Requirement</a>&nbsp;object)</code></th>
 <td class="colLast">
 <div class="block">Returns a SIS metadata implementation with the values of the given arbitrary implementation.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/citation/Citation.html?is-external=true" title="class or interface in org.opengis.metadata.citation" class="externalLink">Citation</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCitation()">getCitation</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the identification of reference or guidance material for the requirement.</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util" class="externalLink">Date</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getExpiryDate()">getExpiryDate</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the date and time after which collection is no longer valid.</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/Identifier.html?is-external=true" title="class or interface in org.opengis.metadata" class="externalLink">Identifier</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getIdentifier()">getIdentifier</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the unique name, or code, for the requirement.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Priority.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Priority</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPriority()">getPriority</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the relative ordered importance, or urgency, of the requirement.</div>
 </td>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/citation/ResponsibleParty.html?is-external=true" title="class or interface in org.opengis.metadata.citation" class="externalLink">ResponsibleParty</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRecipients()">getRecipients</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the person(s), or body(ies), to receive results of requirement.</div>
 </td>
 </tr>
 <tr id="i6" class="altColor">
 <td class="colFirst"><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/RequestedDate.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">RequestedDate</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRequestedDate()">getRequestedDate</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the required or preferred acquisition date and time.</div>
 </td>
 </tr>
 <tr id="i7" class="rowColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/citation/ResponsibleParty.html?is-external=true" title="class or interface in org.opengis.metadata.citation" class="externalLink">ResponsibleParty</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRequestors()">getRequestors</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the origin of requirement.</div>
 </td>
 </tr>
 <tr id="i8" class="altColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Plan.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Plan</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSatisfiedPlans()">getSatisfiedPlans</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the plan that identifies solution to satisfy the requirement.</div>
 </td>
 </tr>
 <tr id="i9" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setCitation(org.opengis.metadata.citation.Citation)">setCitation</a></span>&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/citation/Citation.html?is-external=true" title="class or interface in org.opengis.metadata.citation" class="externalLink">Citation</a>&nbsp;newValue)</code></th>
 <td class="colLast">
 <div class="block">Sets the identification of reference or guidance material for the requirement.</div>
 </td>
 </tr>
 <tr id="i10" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setExpiryDate(java.util.Date)">setExpiryDate</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util" class="externalLink">Date</a>&nbsp;newValue)</code></th>
 <td class="colLast">
 <div class="block">Sets the date and time after which collection is no longer valid.</div>
 </td>
 </tr>
 <tr id="i11" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setIdentifier(org.opengis.metadata.Identifier)">setIdentifier</a></span>&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/Identifier.html?is-external=true" title="class or interface in org.opengis.metadata" class="externalLink">Identifier</a>&nbsp;newValue)</code></th>
 <td class="colLast">
 <div class="block">Sets the unique name, or code, for the requirement.</div>
 </td>
 </tr>
 <tr id="i12" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setPriority(org.opengis.metadata.acquisition.Priority)">setPriority</a></span>&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Priority.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Priority</a>&nbsp;newValue)</code></th>
 <td class="colLast">
 <div class="block">Sets the relative ordered importance, or urgency, of the requirement.</div>
 </td>
 </tr>
 <tr id="i13" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setRecipients(java.util.Collection)">setRecipients</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;? extends <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/citation/ResponsibleParty.html?is-external=true" title="class or interface in org.opengis.metadata.citation" class="externalLink">ResponsibleParty</a>&gt;&nbsp;newValues)</code></th>
 <td class="colLast">
 <div class="block">Sets the Person(s), or body(ies), to receive results of requirement.</div>
 </td>
 </tr>
 <tr id="i14" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setRequestedDate(org.opengis.metadata.acquisition.RequestedDate)">setRequestedDate</a></span>&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/RequestedDate.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">RequestedDate</a>&nbsp;newValue)</code></th>
 <td class="colLast">
 <div class="block">Sets the required or preferred acquisition date and time.</div>
 </td>
 </tr>
 <tr id="i15" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setRequestors(java.util.Collection)">setRequestors</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;? extends <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/citation/ResponsibleParty.html?is-external=true" title="class or interface in org.opengis.metadata.citation" class="externalLink">ResponsibleParty</a>&gt;&nbsp;newValues)</code></th>
 <td class="colLast">
 <div class="block">Sets the origin of requirement.</div>
 </td>
 </tr>
 <tr id="i16" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setSatisfiedPlans(java.util.Collection)">setSatisfiedPlans</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;? extends <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Plan.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Plan</a>&gt;&nbsp;newValues)</code></th>
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 <code><a href="../ISOMetadata.html#getIdentifierMap()">getIdentifierMap</a>, <a href="../ISOMetadata.html#getIdentifiers()">getIdentifiers</a>, <a href="../ISOMetadata.html#getStandard()">getStandard</a>, <a href="../ISOMetadata.html#transitionTo(org.apache.sis.metadata.ModifiableMetadata.State)">transitionTo</a></code></li>
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 <code><a href="../../ModifiableMetadata.html#checkWritePermission()">checkWritePermission</a>, <a href="../../ModifiableMetadata.html#checkWritePermission(java.lang.Object)">checkWritePermission</a>, <a href="../../ModifiableMetadata.html#collectionType(java.lang.Class)">collectionType</a>, <a href="../../ModifiableMetadata.html#copyCollection(java.util.Collection,java.lang.Class)">copyCollection</a>, <a href="../../ModifiableMetadata.html#copyList(java.util.Collection,java.lang.Class)">copyList</a>, <a href="../../ModifiableMetadata.html#copyMap(java.util.Map,java.lang.Class)">copyMap</a>, <a href="../../ModifiableMetadata.html#copySet(java.util.Collection,java.lang.Class)">copySet</a>, <a href="../../ModifiableMetadata.html#freeze()">freeze</a>, <a href="../../ModifiableMetadata.html#isModifiable()">isModifiable</a>, <a href="../../ModifiableMetadata.html#nonNullCollection(java.util.Collection,java.lang.Class)">nonNullCollection</a>, <a href="../../ModifiableMetadata.html#nonNullList(java.util.List,java.lang.Class)">nonNullList</a>, <a href="../../ModifiableMetadata.html#nonNullMap(java.util.Map,java.lang.Class)">nonNullMap</a>, <a href="../../ModifiableMetadata.html#nonNullSet(java.util.Set,java.lang.Class)">nonNullSet</a>, <a href="../../ModifiableMetadata.html#singleton(E,java.lang.Class)">singleton</a>, <a href="../../ModifiableMetadata.html#state()">state</a>, <a href="../../ModifiableMetadata.html#unmodifiable()">unmodifiable</a>, <a href="../../ModifiableMetadata.html#writeCollection(java.util.Collection,java.util.Collection,java.lang.Class)">writeCollection</a>, <a href="../../ModifiableMetadata.html#writeList(java.util.Collection,java.util.List,java.lang.Class)">writeList</a>, <a href="../../ModifiableMetadata.html#writeMap(java.util.Map,java.util.Map,java.lang.Class)">writeMap</a>, <a href="../../ModifiableMetadata.html#writeSet(java.util.Collection,java.util.Set,java.lang.Class)">writeSet</a></code></li>
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 <code><a href="../../AbstractMetadata.html#asMap()">asMap</a>, <a href="../../AbstractMetadata.html#asTreeTable()">asTreeTable</a>, <a href="../../AbstractMetadata.html#equals(java.lang.Object)">equals</a>, <a href="../../AbstractMetadata.html#equals(java.lang.Object,org.apache.sis.util.ComparisonMode)">equals</a>, <a href="../../AbstractMetadata.html#getInterface()">getInterface</a>, <a href="../../AbstractMetadata.html#hashCode()">hashCode</a>, <a href="../../AbstractMetadata.html#isEmpty()">isEmpty</a>, <a href="../../AbstractMetadata.html#prune()">prune</a>, <a href="../../AbstractMetadata.html#toString()">toString</a></code></li>
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 <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink">wait</a></code></li>
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 <h4>DefaultRequirement</h4>
 <pre>public&nbsp;DefaultRequirement()</pre>
 <div class="block">Constructs an initially empty requirement.</div>
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 <pre>public&nbsp;DefaultRequirement&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Requirement</a>&nbsp;object)</pre>
 <div class="block">Constructs a new instance initialized with the values from the specified metadata object.
  This is a <cite>shallow</cite> copy constructor, since the other metadata contained in the
  given object are not recursively copied.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>object</code> - the metadata to copy values from, or <code>null</code> if none.</dd>
 <dt><span class="seeLabel">See Also:</span></dt>
 <dd><a href="#castOrCopy(org.opengis.metadata.acquisition.Requirement)"><code>castOrCopy(Requirement)</code></a></dd>
 </dl>
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 <pre class="methodSignature">public static&nbsp;<a href="DefaultRequirement.html" title="class in org.apache.sis.metadata.iso.acquisition">DefaultRequirement</a>&nbsp;castOrCopy&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Requirement</a>&nbsp;object)</pre>
 <div class="block">Returns a SIS metadata implementation with the values of the given arbitrary implementation.
  This method performs the first applicable action in the following choices:

  <ul>
    <li>If the given object is <code>null</code>, then this method returns <code>null</code>.</li>
    <li>Otherwise if the given object is already an instance of
        <code>DefaultRequirement</code>, then it is returned unchanged.</li>
    <li>Otherwise a new <code>DefaultRequirement</code> instance is created using the
        <a href="#%3Cinit%3E(org.opengis.metadata.acquisition.Requirement)">copy constructor</a>
        and returned. Note that this is a <cite>shallow</cite> copy operation, since the other
        metadata contained in the given object are not recursively copied.</li>
  </ul></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>object</code> - the object to get as a SIS implementation, or <code>null</code> if none.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>a SIS implementation containing the values of the given object (may be the
          given object itself), or <code>null</code> if the argument was null.</dd>
 </dl>
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 <pre class="methodSignature">public&nbsp;<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/citation/Citation.html?is-external=true" title="class or interface in org.opengis.metadata.citation" class="externalLink">Citation</a>&nbsp;getCitation()</pre>
 <div class="block">Returns the identification of reference or guidance material for the requirement.
  <code>null</code> if unspecified.</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true#getCitation()" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">getCitation</a></code>&nbsp;in interface&nbsp;<code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Requirement</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>identification of reference or guidance material, or <code>null</code>.</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">public&nbsp;void&nbsp;setCitation&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/citation/Citation.html?is-external=true" title="class or interface in org.opengis.metadata.citation" class="externalLink">Citation</a>&nbsp;newValue)</pre>
 <div class="block">Sets the identification of reference or guidance material for the requirement.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>newValue</code> - the new citation value.</dd>
 </dl>
 </li>
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 <pre class="methodSignature">public&nbsp;<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/Identifier.html?is-external=true" title="class or interface in org.opengis.metadata" class="externalLink">Identifier</a>&nbsp;getIdentifier()</pre>
 <div class="block">Returns the unique name, or code, for the requirement.</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true#getIdentifier()" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">getIdentifier</a></code>&nbsp;in interface&nbsp;<code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Requirement</a></code></dd>
 <dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
 <dd><code><a href="../ISOMetadata.html#getIdentifier()">getIdentifier</a></code>&nbsp;in class&nbsp;<code><a href="../ISOMetadata.html" title="class in org.apache.sis.metadata.iso">ISOMetadata</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>unique name or code, or <code>null</code>.</dd>
 </dl>
 </li>
 </ul>
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 <h4>setIdentifier</h4>
 <pre class="methodSignature">public&nbsp;void&nbsp;setIdentifier&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/Identifier.html?is-external=true" title="class or interface in org.opengis.metadata" class="externalLink">Identifier</a>&nbsp;newValue)</pre>
 <div class="block">Sets the unique name, or code, for the requirement.</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
 <dd><code><a href="../ISOMetadata.html#setIdentifier(org.opengis.metadata.Identifier)">setIdentifier</a></code>&nbsp;in class&nbsp;<code><a href="../ISOMetadata.html" title="class in org.apache.sis.metadata.iso">ISOMetadata</a></code></dd>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>newValue</code> - the new identifier value.</dd>
 </dl>
 </li>
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 <h4>getRequestors</h4>
 <pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/citation/ResponsibleParty.html?is-external=true" title="class or interface in org.opengis.metadata.citation" class="externalLink">ResponsibleParty</a>&gt;&nbsp;getRequestors()</pre>
 <div class="block">Returns the origin of requirement.

  <div class="warning"><b>Upcoming API change — generalization</b><br>
  As of ISO 19115:2014, <code>ResponsibleParty</code> is replaced by the <code>Responsibility</code> parent interface.
  This change will be tentatively applied in GeoAPI 4.0.
  </div></div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true#getRequestors()" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">getRequestors</a></code>&nbsp;in interface&nbsp;<code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Requirement</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>origin of requirement.</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">public&nbsp;void&nbsp;setRequestors&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;? extends <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/citation/ResponsibleParty.html?is-external=true" title="class or interface in org.opengis.metadata.citation" class="externalLink">ResponsibleParty</a>&gt;&nbsp;newValues)</pre>
 <div class="block">Sets the origin of requirement.

  <div class="warning"><b>Upcoming API change — generalization</b><br>
  As of ISO 19115:2014, <code>ResponsibleParty</code> is replaced by the <code>Responsibility</code> parent interface.
  This change will be tentatively applied in GeoAPI 4.0.
  </div></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>newValues</code> - the new requestors values.</dd>
 </dl>
 </li>
 </ul>
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 <h4>getRecipients</h4>
 <pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/citation/ResponsibleParty.html?is-external=true" title="class or interface in org.opengis.metadata.citation" class="externalLink">ResponsibleParty</a>&gt;&nbsp;getRecipients()</pre>
 <div class="block">Returns the person(s), or body(ies), to receive results of requirement.

  <div class="warning"><b>Upcoming API change — generalization</b><br>
  As of ISO 19115:2014, <code>ResponsibleParty</code> is replaced by the <code>Responsibility</code> parent interface.
  This change will be tentatively applied in GeoAPI 4.0.
  </div></div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true#getRecipients()" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">getRecipients</a></code>&nbsp;in interface&nbsp;<code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Requirement</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>person(s), or body(ies), to receive results.</dd>
 </dl>
 </li>
 </ul>
 <a id="setRecipients(java.util.Collection)">
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 <h4>setRecipients</h4>
 <pre class="methodSignature">public&nbsp;void&nbsp;setRecipients&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;? extends <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/citation/ResponsibleParty.html?is-external=true" title="class or interface in org.opengis.metadata.citation" class="externalLink">ResponsibleParty</a>&gt;&nbsp;newValues)</pre>
 <div class="block">Sets the Person(s), or body(ies), to receive results of requirement.

  <div class="warning"><b>Upcoming API change — generalization</b><br>
  As of ISO 19115:2014, <code>ResponsibleParty</code> is replaced by the <code>Responsibility</code> parent interface.
  This change will be tentatively applied in GeoAPI 4.0.
  </div></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>newValues</code> - the new recipients values.</dd>
 </dl>
 </li>
 </ul>
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 <h4>getPriority</h4>
 <pre class="methodSignature">public&nbsp;<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Priority.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Priority</a>&nbsp;getPriority()</pre>
 <div class="block">Returns the relative ordered importance, or urgency, of the requirement.</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true#getPriority()" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">getPriority</a></code>&nbsp;in interface&nbsp;<code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Requirement</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>relative ordered importance, or urgency, or <code>null</code>.</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">public&nbsp;void&nbsp;setPriority&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Priority.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Priority</a>&nbsp;newValue)</pre>
 <div class="block">Sets the relative ordered importance, or urgency, of the requirement.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>newValue</code> - the new priority value.</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">public&nbsp;<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/RequestedDate.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">RequestedDate</a>&nbsp;getRequestedDate()</pre>
 <div class="block">Returns the required or preferred acquisition date and time.</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true#getRequestedDate()" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">getRequestedDate</a></code>&nbsp;in interface&nbsp;<code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Requirement</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>required or preferred acquisition date and time, or <code>null</code>.</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">public&nbsp;void&nbsp;setRequestedDate&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/RequestedDate.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">RequestedDate</a>&nbsp;newValue)</pre>
 <div class="block">Sets the required or preferred acquisition date and time.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>newValue</code> - the new requested date value.</dd>
 </dl>
 </li>
 </ul>
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 <pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util" class="externalLink">Date</a>&nbsp;getExpiryDate()</pre>
 <div class="block">Returns the date and time after which collection is no longer valid.</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true#getExpiryDate()" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">getExpiryDate</a></code>&nbsp;in interface&nbsp;<code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Requirement</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>date and time after which collection is no longer valid, or <code>null</code>.</dd>
 </dl>
 </li>
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 <pre class="methodSignature">public&nbsp;void&nbsp;setExpiryDate&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util" class="externalLink">Date</a>&nbsp;newValue)</pre>
 <div class="block">Sets the date and time after which collection is no longer valid.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>newValue</code> - the new expiry date.</dd>
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 <pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Plan.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Plan</a>&gt;&nbsp;getSatisfiedPlans()</pre>
 <div class="block">Returns the plan that identifies solution to satisfy the requirement.</div>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true#getSatisfiedPlans()" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">getSatisfiedPlans</a></code>&nbsp;in interface&nbsp;<code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Requirement.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Requirement</a></code></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>plan that identifies solution to satisfy the requirement.</dd>
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 <pre class="methodSignature">public&nbsp;void&nbsp;setSatisfiedPlans&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;? extends <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/acquisition/Plan.html?is-external=true" title="class or interface in org.opengis.metadata.acquisition" class="externalLink">Plan</a>&gt;&nbsp;newValues)</pre>
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 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>newValues</code> - the new satisfied plans values.</dd>
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