Add method get(Class,String)

qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/metadata/MetaDataProducerMultiOutput.java

@@ -145,4 +145,36 @@ public class MetaDataProducerMultiOutput implements MetaDataProducerOutput, Sour
       setSourceQBitName(sourceQBitName);
       return this;
    }
+
+
+
+   /***************************************************************************
+    * get a typed and named meta-data object out of this output container.
+    *
+    * @param <C> the type of the object to return, e.g., QTableMetaData
+    * @param outputClass the class for the type to return
+    * @param name the name of the object, e.g., a table or process name.
+    * @return the requested TopLevelMetaDataInterface object (in the requested
+    * type), or null if not found.
+    ***************************************************************************/
+   public <C extends TopLevelMetaDataInterface> C get(Class<C> outputClass, String name)
+   {
+      for(MetaDataProducerOutput content : CollectionUtils.nonNullList(contents))
+      {
+         if(content instanceof MetaDataProducerMultiOutput multiOutput)
+         {
+            C c = multiOutput.get(outputClass, name);
+            if(c != null)
+            {
+               return (c);
+            }
+         }
+         else if(outputClass.isInstance(content) && name.equals(((TopLevelMetaDataInterface)content).getName()))
+         {
+            return (C) content;
+         }
+      }
+
+      return null;
+   }
 }

qqq-backend-core/src/test/java/com/kingsrook/qqq/backend/core/model/metadata/MetaDataProducerMultiOutputTest.java

@@ -0,0 +1,84 @@
+/*
+ * QQQ - Low-code Application Framework for Engineers.
+ * Copyright (C) 2021-2025.  Kingsrook, LLC
+ * 651 N Broad St Ste 205 # 6917 | Middletown DE 19709 | United States
+ * contact@kingsrook.com
+ * https://github.com/Kingsrook/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.kingsrook.qqq.backend.core.model.metadata;
+
+
+import java.util.List;
+import com.kingsrook.qqq.backend.core.BaseTest;
+import com.kingsrook.qqq.backend.core.model.metadata.processes.QProcessMetaData;
+import com.kingsrook.qqq.backend.core.model.metadata.queues.QQueueMetaData;
+import com.kingsrook.qqq.backend.core.model.metadata.queues.QQueueProviderMetaData;
+import com.kingsrook.qqq.backend.core.model.metadata.tables.QTableMetaData;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+
+/*******************************************************************************
+ ** Unit test for MetaDataProducerMultiOutput 
+ *******************************************************************************/
+class MetaDataProducerMultiOutputTest extends BaseTest
+{
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Test
+   void testGetEachAndGet()
+   {
+      //////////////////////
+      // given this setup //
+      //////////////////////
+      MetaDataProducerMultiOutput metaDataProducerMultiOutput = new MetaDataProducerMultiOutput();
+      metaDataProducerMultiOutput.add(new QTableMetaData().withName("tableA"));
+      metaDataProducerMultiOutput.add(new QProcessMetaData().withName("processB"));
+      metaDataProducerMultiOutput.add(new QBackendMetaData().withName("backendC"));
+      metaDataProducerMultiOutput.add(new QTableMetaData().withName("tableD"));
+
+      ///////////////////////////
+      // test calls to getEach //
+      ///////////////////////////
+      List<QTableMetaData> tables = metaDataProducerMultiOutput.getEach(QTableMetaData.class);
+      assertEquals(2, tables.size());
+      assertEquals("tableA", tables.get(0).getName());
+      assertEquals("tableD", tables.get(1).getName());
+
+      List<QProcessMetaData> processes = metaDataProducerMultiOutput.getEach(QProcessMetaData.class);
+      assertEquals(1, processes.size());
+      assertEquals("processB", processes.get(0).getName());
+
+      List<QBackendMetaData> backends = metaDataProducerMultiOutput.getEach(QBackendMetaData.class);
+      assertEquals(1, backends.size());
+      assertEquals("backendC", backends.get(0).getName());
+
+      List<QQueueProviderMetaData> queueProviders = metaDataProducerMultiOutput.getEach(QQueueProviderMetaData.class);
+      assertEquals(0, queueProviders.size());
+
+      //////////////////////////////////////////////
+      // test some calls to get that takes a name //
+      //////////////////////////////////////////////
+      assertEquals("tableA", metaDataProducerMultiOutput.get(QTableMetaData.class, "tableA").getName());
+      assertNull(metaDataProducerMultiOutput.get(QProcessMetaData.class, "tableA"));
+      assertNull(metaDataProducerMultiOutput.get(QQueueMetaData.class, "queueQ"));
+   }
+
+}