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| <h2 title="Class DefaultDataChannelDescriptorMerger" class="title">Class DefaultDataChannelDescriptorMerger</h2> |
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| <li>org.apache.cayenne.configuration.DefaultDataChannelDescriptorMerger</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../org/apache/cayenne/configuration/DataChannelDescriptorMerger.html" title="interface in org.apache.cayenne.configuration">DataChannelDescriptorMerger</a></dd> |
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| <pre>public class <span class="typeNameLabel">DefaultDataChannelDescriptorMerger</span> |
| extends <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> |
| implements <a href="../../../../org/apache/cayenne/configuration/DataChannelDescriptorMerger.html" title="interface in org.apache.cayenne.configuration">DataChannelDescriptorMerger</a></pre> |
| <div class="block">A default implementation of <a href="../../../../org/apache/cayenne/configuration/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> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>3.1</dd> |
| </dl> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/configuration/DefaultDataChannelDescriptorMerger.html#DefaultDataChannelDescriptorMerger--">DefaultDataChannelDescriptorMerger</a></span>()</code> </td> |
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| <td class="colFirst"><code>protected <a href="../../../../org/apache/cayenne/configuration/DataNodeDescriptor.html" title="class in org.apache.cayenne.configuration">DataNodeDescriptor</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/configuration/DefaultDataChannelDescriptorMerger.html#cloneDataNodeDescriptor-org.apache.cayenne.configuration.DataNodeDescriptor-org.apache.cayenne.configuration.DataChannelDescriptor-">cloneDataNodeDescriptor</a></span>(<a href="../../../../org/apache/cayenne/configuration/DataNodeDescriptor.html" title="class in org.apache.cayenne.configuration">DataNodeDescriptor</a> original, |
| <a href="../../../../org/apache/cayenne/configuration/DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a> targetOwner)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/cayenne/configuration/DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/cayenne/configuration/DefaultDataChannelDescriptorMerger.html#merge-org.apache.cayenne.configuration.DataChannelDescriptor...-">merge</a></span>(<a href="../../../../org/apache/cayenne/configuration/DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a>... descriptors)</code> </td> |
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| <a name="DefaultDataChannelDescriptorMerger--"> |
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| <h4>DefaultDataChannelDescriptorMerger</h4> |
| <pre>public DefaultDataChannelDescriptorMerger()</pre> |
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| <a name="merge-org.apache.cayenne.configuration.DataChannelDescriptor...-"> |
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| <h4>merge</h4> |
| <pre>public <a href="../../../../org/apache/cayenne/configuration/DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a> merge(<a href="../../../../org/apache/cayenne/configuration/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="../../../../org/apache/cayenne/configuration/DataChannelDescriptorMerger.html#merge-org.apache.cayenne.configuration.DataChannelDescriptor...-">merge</a></code> in interface <code><a href="../../../../org/apache/cayenne/configuration/DataChannelDescriptorMerger.html" title="interface in org.apache.cayenne.configuration">DataChannelDescriptorMerger</a></code></dd> |
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| <a name="cloneDataNodeDescriptor-org.apache.cayenne.configuration.DataNodeDescriptor-org.apache.cayenne.configuration.DataChannelDescriptor-"> |
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| <h4>cloneDataNodeDescriptor</h4> |
| <pre>protected <a href="../../../../org/apache/cayenne/configuration/DataNodeDescriptor.html" title="class in org.apache.cayenne.configuration">DataNodeDescriptor</a> cloneDataNodeDescriptor(<a href="../../../../org/apache/cayenne/configuration/DataNodeDescriptor.html" title="class in org.apache.cayenne.configuration">DataNodeDescriptor</a> original, |
| <a href="../../../../org/apache/cayenne/configuration/DataChannelDescriptor.html" title="class in org.apache.cayenne.configuration">DataChannelDescriptor</a> targetOwner)</pre> |
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