src/main/site/static/docs/4.2/api/org/apache/cayenne/configuration/DefaultDataChannelDescriptorMerger.html - cayenne-website - Git at Google

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 <pre>public class <span class="typeNameLabel">DefaultDataChannelDescriptorMerger</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>
 implements <a href="DataChannelDescriptorMerger.html" title="interface in org.apache.cayenne.configuration">DataChannelDescriptorMerger</a></pre>
 <div class="block">A default implementation of <a href="DataChannelDescriptorMerger.html" title="interface in org.apache.cayenne.configuration"><code>DataChannelDescriptorMerger</code></a>. The general rule of
  merge is that the order of descriptors on the merge list matters. If there are two
  conflicting metadata objects belonging to two descriptors, an object from the last
  descriptor takes precedence over the object from the first one. This way it is easy to
  override pieces of metadata. This is also similar to how DI modules are merged in
  Cayenne. So this is how the merge works:
  <ul>
  <li>Merged descriptor name is the same as the name of the last descriptor on the merge
  list.</li>
  <li>Merged descriptor properties are the same as the properties of the last descriptor
  on the merge list. I.e. properties are not merged to avoid invalid combinations and
  unexpected runtime behavior.</li>
  <li>If there are two or more DataMaps with the same name, only one DataMap is placed in
  the merged descriptor, the rest are discarded. DataMap with highest index in the
  descriptor array is chosen per precedence rule above.</li>
  <li>If there are two or more DataNodes with the same name, only one DataNodes is placed
  in the merged descriptor, the rest are discarded. DataNodes with highest index in the
  descriptor array is chosen per precedence rule above.</li>
  </ul></div>
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 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>3.1</dd>
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 <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">DefaultDataChannelDescriptorMerger</a></span>()</code></th>
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 <td class="colFirst"><code>protected <a href="DataNodeDescriptor.html" title="class in org.apache.cayenne.configuration">DataNodeDescriptor</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#cloneDataNodeDescriptor(org.apache.cayenne.configuration.DataNodeDescriptor,org.apache.cayenne.configuration.DataChannelDescriptor)">cloneDataNodeDescriptor</a></span>&#8203;(<a href="DataNodeDescriptor.html" title="class in org.apache.cayenne.configuration">DataNodeDescriptor</a>&nbsp;original,
                        <a href="DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a>&nbsp;targetOwner)</code></th>
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 <td class="colFirst"><code><a href="DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#merge(org.apache.cayenne.configuration.DataChannelDescriptor...)">merge</a></span>&#8203;(<a href="DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a>...&nbsp;descriptors)</code></th>
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 <h4>DefaultDataChannelDescriptorMerger</h4>
 <pre>public&nbsp;DefaultDataChannelDescriptorMerger()</pre>
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 <h4>merge</h4>
 <pre class="methodSignature">public&nbsp;<a href="DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a>&nbsp;merge&#8203;(<a href="DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a>...&nbsp;descriptors)</pre>
 <dl>
 <dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
 <dd><code><a href="DataChannelDescriptorMerger.html#merge(org.apache.cayenne.configuration.DataChannelDescriptor...)">merge</a></code>&nbsp;in interface&nbsp;<code><a href="DataChannelDescriptorMerger.html" title="interface in org.apache.cayenne.configuration">DataChannelDescriptorMerger</a></code></dd>
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 <h4>cloneDataNodeDescriptor</h4>
 <pre class="methodSignature">protected&nbsp;<a href="DataNodeDescriptor.html" title="class in org.apache.cayenne.configuration">DataNodeDescriptor</a>&nbsp;cloneDataNodeDescriptor&#8203;(<a href="DataNodeDescriptor.html" title="class in org.apache.cayenne.configuration">DataNodeDescriptor</a>&nbsp;original,
                                                      <a href="DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a>&nbsp;targetOwner)</pre>
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	<h2 title="Class DefaultDataChannelDescriptorMerger" class="title">Class DefaultDataChannelDescriptorMerger</h2>
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	<pre>public class <span class="typeNameLabel">DefaultDataChannelDescriptorMerger</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>
	implements <a href="DataChannelDescriptorMerger.html" title="interface in org.apache.cayenne.configuration">DataChannelDescriptorMerger</a></pre>
	<div class="block">A default implementation of <a href="DataChannelDescriptorMerger.html" title="interface in org.apache.cayenne.configuration"><code>DataChannelDescriptorMerger</code></a>. The general rule of
	merge is that the order of descriptors on the merge list matters. If there are two
	conflicting metadata objects belonging to two descriptors, an object from the last
	descriptor takes precedence over the object from the first one. This way it is easy to
	override pieces of metadata. This is also similar to how DI modules are merged in
	Cayenne. So this is how the merge works:
	<ul>
	<li>Merged descriptor name is the same as the name of the last descriptor on the merge
	list.</li>
	<li>Merged descriptor properties are the same as the properties of the last descriptor
	on the merge list. I.e. properties are not merged to avoid invalid combinations and
	unexpected runtime behavior.</li>
	<li>If there are two or more DataMaps with the same name, only one DataMap is placed in
	the merged descriptor, the rest are discarded. DataMap with highest index in the
	descriptor array is chosen per precedence rule above.</li>
	<li>If there are two or more DataNodes with the same name, only one DataNodes is placed
	in the merged descriptor, the rest are discarded. DataNodes with highest index in the
	descriptor array is chosen per precedence rule above.</li>
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	<dt><span class="simpleTagLabel">Since:</span></dt>
	<dd>3.1</dd>
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	<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">DefaultDataChannelDescriptorMerger</a></span>()</code></th>
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	<td class="colFirst"><code>protected <a href="DataNodeDescriptor.html" title="class in org.apache.cayenne.configuration">DataNodeDescriptor</a></code></td>
	<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#cloneDataNodeDescriptor(org.apache.cayenne.configuration.DataNodeDescriptor,org.apache.cayenne.configuration.DataChannelDescriptor)">cloneDataNodeDescriptor</a></span>(<a href="DataNodeDescriptor.html" title="class in org.apache.cayenne.configuration">DataNodeDescriptor</a> original,
	<a href="DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a> targetOwner)</code></th>
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	<td class="colFirst"><code><a href="DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a></code></td>
	<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#merge(org.apache.cayenne.configuration.DataChannelDescriptor...)">merge</a></span>(<a href="DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a>... descriptors)</code></th>
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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#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>DefaultDataChannelDescriptorMerger</h4>
	<pre>public DefaultDataChannelDescriptorMerger()</pre>
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	<h4>merge</h4>
	<pre class="methodSignature">public <a href="DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a> merge(<a href="DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a>... descriptors)</pre>
	<dl>
	<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
	<dd><code><a href="DataChannelDescriptorMerger.html#merge(org.apache.cayenne.configuration.DataChannelDescriptor...)">merge</a></code> in interface <code><a href="DataChannelDescriptorMerger.html" title="interface in org.apache.cayenne.configuration">DataChannelDescriptorMerger</a></code></dd>
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	<a id="cloneDataNodeDescriptor(org.apache.cayenne.configuration.DataNodeDescriptor,org.apache.cayenne.configuration.DataChannelDescriptor)">
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	<h4>cloneDataNodeDescriptor</h4>
	<pre class="methodSignature">protected <a href="DataNodeDescriptor.html" title="class in org.apache.cayenne.configuration">DataNodeDescriptor</a> cloneDataNodeDescriptor(<a href="DataNodeDescriptor.html" title="class in org.apache.cayenne.configuration">DataNodeDescriptor</a> original,
	<a href="DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a> targetOwner)</pre>
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