enhanced memory backend somewhat

qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/actions/tables/query/QFilterCriteria.java

@@ -120,7 +120,7 @@ public class QFilterCriteria implements Serializable, Cloneable
       }
       else
       {
-         this.values = Arrays.stream(values).toList();
+         this.values = new ArrayList<>(Arrays.stream(values).toList());
       }
    }
 

qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/modules/backend/implementations/memory/AbstractMemoryAction.java

@@ -0,0 +1,59 @@
+/*
+ * QQQ - Low-code Application Framework for Engineers.
+ * Copyright (C) 2021-2022.  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.modules.backend.implementations.memory;
+
+
+import java.io.Serializable;
+import com.kingsrook.qqq.backend.core.actions.interfaces.QActionInterface;
+import com.kingsrook.qqq.backend.core.model.data.QRecord;
+import com.kingsrook.qqq.backend.core.model.metadata.tables.QTableMetaData;
+
+
+/*******************************************************************************
+ ** Base class for all core actions in the Memory backend module.
+ *******************************************************************************/
+public abstract class AbstractMemoryAction implements QActionInterface
+{
+
+   /*******************************************************************************
+    ** If the table has a field with the given name, then set the given value in the
+    ** given record.
+    *******************************************************************************/
+   protected void setValueIfTableHasField(QRecord record, QTableMetaData table, String fieldName, Serializable value)
+   {
+      try
+      {
+         if(table.getFields().containsKey(fieldName))
+         {
+            record.setValue(fieldName, value);
+         }
+      }
+      catch(Exception e)
+      {
+         /////////////////////////////////////////////////
+         // this means field doesn't exist, so, ignore. //
+         /////////////////////////////////////////////////
+      }
+   }
+
+}
+

qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/modules/backend/implementations/memory/MemoryCountAction.java

@@ -26,6 +26,7 @@ import com.kingsrook.qqq.backend.core.actions.interfaces.CountInterface;
 import com.kingsrook.qqq.backend.core.exceptions.QException;
 import com.kingsrook.qqq.backend.core.model.actions.tables.count.CountInput;
 import com.kingsrook.qqq.backend.core.model.actions.tables.count.CountOutput;
+import com.kingsrook.qqq.backend.core.utils.CollectionUtils;
 
 
 /*******************************************************************************
@@ -42,8 +43,14 @@ public class MemoryCountAction implements CountInterface
    {
       try
       {
+         if(CollectionUtils.nullSafeHasContents(countInput.getQueryJoins()))
+         {
+            throw (new UnsupportedOperationException("Performing counts on tables with exposed joins is currently not supported by the Memory Backend."));
+         }
+
          CountOutput countOutput = new CountOutput();
          countOutput.setCount(MemoryRecordStore.getInstance().count(countInput));
+         countOutput.setDistinctCount(countOutput.getCount());
          return (countOutput);
       }
       catch(Exception e)

qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/modules/backend/implementations/memory/MemoryInsertAction.java

@@ -22,17 +22,20 @@
 package com.kingsrook.qqq.backend.core.modules.backend.implementations.memory;
 
 
+import java.time.Instant;
 import com.kingsrook.qqq.backend.core.actions.interfaces.InsertInterface;
 import com.kingsrook.qqq.backend.core.exceptions.QException;
 import com.kingsrook.qqq.backend.core.model.actions.tables.insert.InsertInput;
 import com.kingsrook.qqq.backend.core.model.actions.tables.insert.InsertOutput;
+import com.kingsrook.qqq.backend.core.model.data.QRecord;
+import com.kingsrook.qqq.backend.core.model.metadata.tables.QTableMetaData;
 
 
 /*******************************************************************************
  ** In-memory version of insert action.
  **
  *******************************************************************************/
-public class MemoryInsertAction implements InsertInterface
+public class MemoryInsertAction extends AbstractMemoryAction implements InsertInterface
 {
 
    /*******************************************************************************
@@ -42,6 +45,18 @@ public class MemoryInsertAction implements InsertInterface
    {
       try
       {
+         QTableMetaData table = insertInput.getTable();
+         Instant        now   = Instant.now();
+
+         for(QRecord record : insertInput.getRecords())
+         {
+            ///////////////////////////////////////////
+            // todo .. better (not hard-coded names) //
+            ///////////////////////////////////////////
+            setValueIfTableHasField(record, table, "createDate", now);
+            setValueIfTableHasField(record, table, "modifyDate", now);
+         }
+
          InsertOutput insertOutput = new InsertOutput();
          insertOutput.setRecords(MemoryRecordStore.getInstance().insert(insertInput, true));
          return (insertOutput);

qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/modules/backend/implementations/memory/MemoryUpdateAction.java

@@ -22,17 +22,20 @@
 package com.kingsrook.qqq.backend.core.modules.backend.implementations.memory;
 
 
+import java.time.Instant;
 import com.kingsrook.qqq.backend.core.actions.interfaces.UpdateInterface;
 import com.kingsrook.qqq.backend.core.exceptions.QException;
 import com.kingsrook.qqq.backend.core.model.actions.tables.update.UpdateInput;
 import com.kingsrook.qqq.backend.core.model.actions.tables.update.UpdateOutput;
+import com.kingsrook.qqq.backend.core.model.data.QRecord;
+import com.kingsrook.qqq.backend.core.model.metadata.tables.QTableMetaData;
 
 
 /*******************************************************************************
  ** In-memory version of update action.
  **
  *******************************************************************************/
-public class MemoryUpdateAction implements UpdateInterface
+public class MemoryUpdateAction extends AbstractMemoryAction implements UpdateInterface
 {
 
    /*******************************************************************************
@@ -42,6 +45,17 @@ public class MemoryUpdateAction implements UpdateInterface
    {
       try
       {
+         QTableMetaData table = updateInput.getTable();
+         Instant        now   = Instant.now();
+
+         for(QRecord record : updateInput.getRecords())
+         {
+            ///////////////////////////////////////////
+            // todo .. better (not hard-coded names) //
+            ///////////////////////////////////////////
+            setValueIfTableHasField(record, table, "modifyDate", now);
+         }
+
          UpdateOutput updateOutput = new UpdateOutput();
          updateOutput.setRecords(MemoryRecordStore.getInstance().update(updateInput, true));
          return (updateOutput);

qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/modules/backend/implementations/utils/BackendQueryFilterUtils.java

@@ -61,10 +61,10 @@ public class BackendQueryFilterUtils
          return (true);
       }
 
-      /////////////////////////////////////////////////////////////////////////////////////
+      //////////////////////////////////////////////////////////////////////////////////////
-      // for an AND query, default to a TRUE answer, and we'll &= each criteria's value. //
+      // for an AND query, default to a TRUE answer, and we'll &= each criterion's value. //
-      // for an OR query, default to FALSE, and |= each criteria's value.                //
+      // for an OR query, default to FALSE, and |= each criterion's value.                //
-      /////////////////////////////////////////////////////////////////////////////////////
+      //////////////////////////////////////////////////////////////////////////////////////
       AtomicBoolean recordMatches = new AtomicBoolean(filter.getBooleanOperator().equals(QQueryFilter.BooleanOperator.AND) ? true : false);
 
       ///////////////////////////////////////