static/apidocs/org/apache/sis/metadata/MetadataCopier.html - sis-site - Git at Google

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 <div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.sis.metadata</a></div>
 <h2 title="Class MetadataCopier" class="title">Class MetadataCopier</h2>
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 <pre>public class <span class="typeNameLabel">MetadataCopier</span>
 extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></pre>
 <div class="block">Performs deep copies of given metadata instances. This class performs <em>copies</em>, not clones,
  since the copied metadata may not be instances of the same class than the original metadata.
  This class performs the following steps:

  <ul>
    <li>Get the <a href="MetadataStandard.html#getImplementation(java.lang.Class)">implementation class</a> of the given metadata instance.</li>
    <li>Create a <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Constructor.html?is-external=true#newInstance(java.lang.Object...)" title="class or interface in java.lang.reflect" class="externalLink">new instance</a> of the implementation class using the public no-argument constructor.</li>
    <li>Invoke all non-deprecated setter methods on the new instance with the corresponding value from the given metadata.</li>
    <li>If any of the values copied in above step is itself a metadata, recursively performs deep copy on those metadata instances too.</li>
  </ul>

  This copier may be used for converting metadata tree of unknown implementations (for example the result of a call to
  <a href="sql/MetadataSource.html#lookup(java.lang.Class,java.lang.String)"><code>MetadataSource.lookup(Class, String)</code></a>) into instances of <a href="AbstractMetadata.html" title="class in org.apache.sis.metadata"><code>AbstractMetadata</code></a>.
  The copier may also be used if a <a href="ModifiableMetadata.State.html#EDITABLE">modifiable</a> metadata is desired after
  the original metadata has been made <a href="ModifiableMetadata.State.html#FINAL">final</a>.

  <p>Default implementation copies all copiable children, regardless their <a href="ModifiableMetadata.html#state()">state</a>.
  Static factory methods allow to construct some variants, for example skipping the copy of unmodifiable metadata instances
  since they can be safely shared.</p>

  <p>This class supports cyclic graphs in the metadata tree. It may return the given <code>metadata</code> object directly
  if the <a href="MetadataStandard.html#getImplementation(java.lang.Class)">implementation class</a> does not provide any setter method.</p>

  <p>This class is not thread-safe.
  In multi-threads environment, each thread should use its own <code>MetadataCopier</code> instance.</p></div>
 <dl>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>0.8</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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 <tr class="altColor">
 <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.sis.metadata.MetadataStandard)">MetadataCopier</a></span>&#8203;(<a href="MetadataStandard.html" title="class in org.apache.sis.metadata">MetadataStandard</a>&nbsp;standard)</code></th>
 <td class="colLast">
 <div class="block">Creates a new metadata copier.</div>
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 <td class="colFirst"><code>&lt;T&gt;&nbsp;T</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#copy(java.lang.Class,T)">copy</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a>&lt;T&gt;&nbsp;type,
     T&nbsp;metadata)</code></th>
 <td class="colLast">
 <div class="block">Performs a potentially deep copy of the given metadata object.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#copy(java.lang.Object)">copy</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;metadata)</code></th>
 <td class="colLast">
 <div class="block">Performs a potentially deep copy of a metadata object of unknown type.</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#copyRecursively(java.lang.Class,java.lang.Object)">copyRecursively</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a>&lt;?&gt;&nbsp;type,
                <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;metadata)</code></th>
 <td class="colLast">
 <div class="block">Performs the actual copy operation on a single metadata instance.</div>
 </td>
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 <tr id="i3" class="rowColor">
 <td class="colFirst"><code>static <a href="MetadataCopier.html" title="class in org.apache.sis.metadata">MetadataCopier</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#forModifiable(org.apache.sis.metadata.MetadataStandard)">forModifiable</a></span>&#8203;(<a href="MetadataStandard.html" title="class in org.apache.sis.metadata">MetadataStandard</a>&nbsp;standard)</code></th>
 <td class="colLast">
 <div class="block">Creates a new metadata copier which avoid copying unmodifiable metadata.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCurrentPropertyPath()">getCurrentPropertyPath</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the path to the currently copied property.</div>
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 <h3>Methods inherited from class&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></h3>
 <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#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink">equals</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#hashCode()" title="class or interface in java.lang" class="externalLink">hashCode</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#toString()" title="class or interface in java.lang" class="externalLink">toString</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>MetadataCopier</h4>
 <pre>public&nbsp;MetadataCopier&#8203;(<a href="MetadataStandard.html" title="class in org.apache.sis.metadata">MetadataStandard</a>&nbsp;standard)</pre>
 <div class="block">Creates a new metadata copier.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>standard</code> - the default metadata standard to use for object that are not <a href="AbstractMetadata.html" title="class in org.apache.sis.metadata"><code>AbstractMetadata</code></a> instances,
                   or <code>null</code> if none.</dd>
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 <pre class="methodSignature">public static&nbsp;<a href="MetadataCopier.html" title="class in org.apache.sis.metadata">MetadataCopier</a>&nbsp;forModifiable&#8203;(<a href="MetadataStandard.html" title="class in org.apache.sis.metadata">MetadataStandard</a>&nbsp;standard)</pre>
 <div class="block">Creates a new metadata copier which avoid copying unmodifiable metadata.
  More specifically, any <a href="ModifiableMetadata.html" title="class in org.apache.sis.metadata"><code>ModifiableMetadata</code></a> instance in
  <a href="ModifiableMetadata.State.html#FINAL">final state</a> will be kept <i>as-is</i>;
  those final metadata will not be copied since they can be safely shared.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>standard</code> - the default metadata standard to use for object that are not <a href="AbstractMetadata.html" title="class in org.apache.sis.metadata"><code>AbstractMetadata</code></a> instances,
                    or <code>null</code> if none.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>a metadata copier which skip the copy of unmodifiable metadata.</dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.0</dd>
 </dl>
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 <h4>copy</h4>
 <pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;copy&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;metadata)</pre>
 <div class="block">Performs a potentially deep copy of a metadata object of unknown type.
  The return value does not need to be of the same class than the argument.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>metadata</code> - the metadata object to copy, or <code>null</code>.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>a copy of the given metadata object, or <code>null</code> if the given argument is <code>null</code>.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/UnsupportedOperationException.html?is-external=true" title="class or interface in java.lang" class="externalLink">UnsupportedOperationException</a></code> - if there is no implementation class for a metadata to copy,
          or an implementation class does not provide a public default constructor.</dd>
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 <pre class="methodSignature">public&nbsp;&lt;T&gt;&nbsp;T&nbsp;copy&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a>&lt;T&gt;&nbsp;type,
                   T&nbsp;metadata)</pre>
 <div class="block">Performs a potentially deep copy of the given metadata object.
  This method is preferred to <a href="#copy(java.lang.Object)"><code>copy(Object)</code></a> when the type is known.
  The specified type should be an interface, not an implementation
  (for example <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/Metadata.html?is-external=true" title="class or interface in org.opengis.metadata" class="externalLink"><code>Metadata</code></a>, not
  <a href="iso/DefaultMetadata.html" title="class in org.apache.sis.metadata.iso"><code>DefaultMetadata</code></a>).</div>
 <dl>
 <dt><span class="paramLabel">Type Parameters:</span></dt>
 <dd><code>T</code> - compile-time value of the <code>type</code> argument.</dd>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>type</code> - the interface of the metadata object to copy.</dd>
 <dd><code>metadata</code> - the metadata object to copy, or <code>null</code>.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>a copy of the given metadata object, or <code>null</code> if the given argument is <code>null</code>.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang" class="externalLink">IllegalArgumentException</a></code> - if <code>type</code> is an implementation class instead than interface.</dd>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/UnsupportedOperationException.html?is-external=true" title="class or interface in java.lang" class="externalLink">UnsupportedOperationException</a></code> - if there is no implementation class for a metadata to copy,
          or an implementation class does not provide a public default constructor.</dd>
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 <h4>copyRecursively</h4>
 <pre class="methodSignature">protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;copyRecursively&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a>&lt;?&gt;&nbsp;type,
                                  <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a>&nbsp;metadata)</pre>
 <div class="block">Performs the actual copy operation on a single metadata instance.
  This method is invoked by all public <code>copy(…)</code> method with the root <code>metadata</code>
  object in argument, then is invoked recursively for all properties in that metadata object.
  If a metadata property is a collection, then this method is invoked for each element in the collection.

  <p>Subclasses can override this method if they need some control on the copy process.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>type</code> - the interface of the metadata object to copy, or <code>null</code> if unspecified.</dd>
 <dd><code>metadata</code> - the metadata object to copy, or <code>null</code>.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>a copy of the given metadata object, or <code>null</code> if the given argument is <code>null</code>.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/UnsupportedOperationException.html?is-external=true" title="class or interface in java.lang" class="externalLink">UnsupportedOperationException</a></code> - if there is no implementation class for a metadata to copy,
          or an implementation class does not provide a public default constructor.</dd>
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 <pre class="methodSignature">protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&gt;&nbsp;getCurrentPropertyPath()</pre>
 <div class="block">Returns the path to the currently copied property.
  Each element in the list is the UML identifier of a property.
  Element at index 0 is the name of the property of the root metadata object being copied.
  Element at index 1 is the name of a property which is a children of above property, <i>etc.</i>

  <p>The returned list is valid only during <a href="#copyRecursively(java.lang.Class,java.lang.Object)"><code>copyRecursively(Class, Object)</code></a> method execution.
  The content of this list become undetermined after the <code>copyRecursively</code> method returned.</p></div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the path to the currently copied property.</dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.0</dd>
 </dl>
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