Add joins and ChildRecordList widget

qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/actions/dashboard/RenderWidgetAction.java

@@ -22,11 +22,15 @@
 package com.kingsrook.qqq.backend.core.actions.dashboard;
 
 
+import java.io.Serializable;
+import java.util.Map;
 import com.kingsrook.qqq.backend.core.actions.ActionHelper;
 import com.kingsrook.qqq.backend.core.actions.customizers.QCodeLoader;
 import com.kingsrook.qqq.backend.core.exceptions.QException;
 import com.kingsrook.qqq.backend.core.model.actions.widgets.RenderWidgetInput;
 import com.kingsrook.qqq.backend.core.model.actions.widgets.RenderWidgetOutput;
+import com.kingsrook.qqq.backend.core.model.metadata.dashboard.QWidgetMetaData;
+import com.kingsrook.qqq.backend.core.utils.ValueUtils;
 
 
 /*******************************************************************************
@@ -44,6 +48,18 @@ public class RenderWidgetAction
       ActionHelper.validateSession(input);
 
       AbstractWidgetRenderer widgetRenderer = QCodeLoader.getAdHoc(AbstractWidgetRenderer.class, input.getWidgetMetaData().getCodeReference());
+
+      ///////////////////////////////////////////////////////////////
+      // move default values from meta data into this render input //
+      ///////////////////////////////////////////////////////////////
+      if(input.getWidgetMetaData() instanceof QWidgetMetaData widgetMetaData)
+      {
+         for(Map.Entry<String, Serializable> entry : widgetMetaData.getDefaultValues().entrySet())
+         {
+            input.getQueryParams().putIfAbsent(entry.getKey(), ValueUtils.getValueAsString(entry.getValue()));
+         }
+      }
+
       return (widgetRenderer.render(input));
    }
 }

qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/actions/dashboard/widgets/ChildRecordListRenderer.java

@@ -0,0 +1,126 @@
+/*
+ * 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.actions.dashboard.widgets;
+
+
+import java.net.URLEncoder;
+import java.nio.charset.Charset;
+import java.util.List;
+import com.kingsrook.qqq.backend.core.actions.dashboard.AbstractWidgetRenderer;
+import com.kingsrook.qqq.backend.core.actions.tables.GetAction;
+import com.kingsrook.qqq.backend.core.actions.tables.QueryAction;
+import com.kingsrook.qqq.backend.core.exceptions.QException;
+import com.kingsrook.qqq.backend.core.exceptions.QNotFoundException;
+import com.kingsrook.qqq.backend.core.model.actions.tables.get.GetInput;
+import com.kingsrook.qqq.backend.core.model.actions.tables.get.GetOutput;
+import com.kingsrook.qqq.backend.core.model.actions.tables.query.QCriteriaOperator;
+import com.kingsrook.qqq.backend.core.model.actions.tables.query.QFilterCriteria;
+import com.kingsrook.qqq.backend.core.model.actions.tables.query.QQueryFilter;
+import com.kingsrook.qqq.backend.core.model.actions.tables.query.QueryInput;
+import com.kingsrook.qqq.backend.core.model.actions.tables.query.QueryOutput;
+import com.kingsrook.qqq.backend.core.model.actions.widgets.RenderWidgetInput;
+import com.kingsrook.qqq.backend.core.model.actions.widgets.RenderWidgetOutput;
+import com.kingsrook.qqq.backend.core.model.dashboard.widgets.ChildRecordListData;
+import com.kingsrook.qqq.backend.core.model.dashboard.widgets.WidgetType;
+import com.kingsrook.qqq.backend.core.model.data.QRecord;
+import com.kingsrook.qqq.backend.core.model.metadata.code.QCodeReference;
+import com.kingsrook.qqq.backend.core.model.metadata.dashboard.QWidgetMetaData;
+import com.kingsrook.qqq.backend.core.model.metadata.joins.JoinOn;
+import com.kingsrook.qqq.backend.core.model.metadata.joins.QJoinMetaData;
+import com.kingsrook.qqq.backend.core.model.metadata.tables.QTableMetaData;
+import com.kingsrook.qqq.backend.core.utils.JsonUtils;
+
+
+/*******************************************************************************
+ ** Generic widget for display a list of child records.
+ *******************************************************************************/
+public class ChildRecordListRenderer extends AbstractWidgetRenderer
+{
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public static QWidgetMetaData defineWidgetFromJoin(QJoinMetaData join)
+   {
+      return (new QWidgetMetaData()
+         .withName(join.getName())
+         .withCodeReference(new QCodeReference(ChildRecordListRenderer.class, null))
+         .withType(WidgetType.CHILD_RECORD_LIST.getType())
+         .withDefaultValue("joinName", join.getName()));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Override
+   public RenderWidgetOutput render(RenderWidgetInput input) throws QException
+   {
+      String        widgetLabel = input.getQueryParams().get("widgetLabel");
+      String        joinName    = input.getQueryParams().get("joinName");
+      QJoinMetaData join        = input.getInstance().getJoin(joinName);
+      String        id          = input.getQueryParams().get("id");
+
+      ////////////////////////////////////////////////////////
+      // fetch the record that we're getting children for.  //
+      // e.g., the left-side of the join, with the input id //
+      ////////////////////////////////////////////////////////
+      GetInput getInput = new GetInput(input.getInstance());
+      getInput.setSession(input.getSession());
+      getInput.setTableName(join.getLeftTable());
+      getInput.setPrimaryKey(id);
+      GetOutput getOutput = new GetAction().execute(getInput);
+      QRecord   record    = getOutput.getRecord();
+
+      if(record == null)
+      {
+         QTableMetaData table = input.getInstance().getTable(join.getLeftTable());
+         throw (new QNotFoundException("Could not find " + (table == null ? "" : table.getLabel()) + " with primary key " + id));
+      }
+
+      ////////////////////////////////////////////////////////////////////
+      // set up the query - for the table on the right side of the join //
+      ////////////////////////////////////////////////////////////////////
+      QQueryFilter filter = new QQueryFilter();
+      for(JoinOn joinOn : join.getJoinOns())
+      {
+         filter.addCriteria(new QFilterCriteria(joinOn.getRightField(), QCriteriaOperator.EQUALS, List.of(record.getValue(joinOn.getLeftField()))));
+      }
+      filter.setOrderBys(join.getOrderBys());
+
+      QueryInput queryInput = new QueryInput(input.getInstance());
+      queryInput.setSession(input.getSession());
+      queryInput.setTableName(join.getRightTable());
+      queryInput.setShouldTranslatePossibleValues(true);
+      queryInput.setShouldGenerateDisplayValues(true);
+      queryInput.setFilter(filter);
+      QueryOutput queryOutput = new QueryAction().execute(queryInput);
+
+      QTableMetaData table       = input.getInstance().getTable(join.getRightTable());
+      String         tablePath   = input.getInstance().getTablePath(input, table.getName());
+      String         viewAllLink = tablePath + "?filter=" + URLEncoder.encode(JsonUtils.toJson(filter), Charset.defaultCharset());
+
+      return (new RenderWidgetOutput(new ChildRecordListData(widgetLabel, queryOutput, table, tablePath, viewAllLink)));
+   }
+
+}

qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/instances/QInstanceValidator.java

@@ -285,7 +285,7 @@ public class QInstanceValidator
             {
                for(QFieldSection section : table.getSections())
                {
-                  validateFieldSection(table, section, fieldNamesInSections);
+                  validateTableSection(qInstance, table, section, fieldNamesInSections);
                   if(section.getTier().equals(Tier.T1))
                   {
                      assertCondition(tier1Section == null, "Table " + tableName + " has more than 1 section listed as Tier 1");
@@ -658,13 +658,17 @@ public class QInstanceValidator
    /*******************************************************************************
     **
     *******************************************************************************/
-   private void validateFieldSection(QTableMetaData table, QFieldSection section, Set<String> fieldNamesInSections)
+   private void validateTableSection(QInstance qInstance, QTableMetaData table, QFieldSection section, Set<String> fieldNamesInSections)
    {
       assertCondition(StringUtils.hasContent(section.getName()), "Missing a name for field section in table " + table.getName() + ".");
       assertCondition(StringUtils.hasContent(section.getLabel()), "Missing a label for field section in table " + table.getLabel() + ".");
-      if(assertCondition(CollectionUtils.nullSafeHasContents(section.getFieldNames()), "Table " + table.getName() + " section " + section.getName() + " does not have any fields."))
+
+      boolean hasFields = CollectionUtils.nullSafeHasContents(section.getFieldNames());
+      boolean hasWidget = StringUtils.hasContent(section.getWidgetName());
+
+      if(assertCondition(hasFields || hasWidget, "Table " + table.getName() + " section " + section.getName() + " does not have any fields or a widget."))
       {
-         if(table.getFields() != null)
+         if(table.getFields() != null && hasFields)
          {
             for(String fieldName : section.getFieldNames())
             {
@@ -674,6 +678,10 @@ public class QInstanceValidator
                fieldNamesInSections.add(fieldName);
             }
          }
+         else if(hasWidget)
+         {
+            assertCondition(qInstance.getWidget(section.getWidgetName()) != null, "Table " + table.getName() + " section " + section.getName() + " specifies widget " + section.getWidgetName() + ", which is not a widget in this instance.");
+         }
       }
    }
 

qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/dashboard/widgets/ChildRecordListData.java

@@ -0,0 +1,212 @@
+/*
+ * 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.model.dashboard.widgets;
+
+
+import com.kingsrook.qqq.backend.core.model.actions.tables.query.QueryOutput;
+import com.kingsrook.qqq.backend.core.model.metadata.tables.QTableMetaData;
+
+
+/*******************************************************************************
+ ** Model containing data structure expected by frontend ChildRecordList widget
+ **
+ *******************************************************************************/
+public class ChildRecordListData implements QWidget
+{
+   private String         title;
+   private QueryOutput    queryOutput;
+   private QTableMetaData childTableMetaData;
+
+   private String tablePath;
+   private String viewAllLink;
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public ChildRecordListData(String title, QueryOutput queryOutput, QTableMetaData childTableMetaData, String tablePath, String viewAllLink)
+   {
+      this.title = title;
+      this.queryOutput = queryOutput;
+      this.childTableMetaData = childTableMetaData;
+      this.tablePath = tablePath;
+      this.viewAllLink = viewAllLink;
+   }
+
+
+
+   /*******************************************************************************
+    ** Getter for type
+    **
+    *******************************************************************************/
+   public String getType()
+   {
+      return WidgetType.CHILD_RECORD_LIST.getType();
+   }
+
+
+
+   /*******************************************************************************
+    ** Getter for title
+    **
+    *******************************************************************************/
+   public String getTitle()
+   {
+      return title;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for title
+    **
+    *******************************************************************************/
+   public void setTitle(String title)
+   {
+      this.title = title;
+   }
+
+
+
+   /*******************************************************************************
+    ** Fluent setter for title
+    **
+    *******************************************************************************/
+   public ChildRecordListData withTitle(String title)
+   {
+      this.title = title;
+      return (this);
+   }
+
+
+
+   /*******************************************************************************
+    ** Getter for queryOutput
+    **
+    *******************************************************************************/
+   public QueryOutput getQueryOutput()
+   {
+      return queryOutput;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for queryOutput
+    **
+    *******************************************************************************/
+   public void setQueryOutput(QueryOutput queryOutput)
+   {
+      this.queryOutput = queryOutput;
+   }
+
+
+
+   /*******************************************************************************
+    ** Fluent setter for queryOutput
+    **
+    *******************************************************************************/
+   public ChildRecordListData withQueryOutput(QueryOutput queryOutput)
+   {
+      this.queryOutput = queryOutput;
+      return (this);
+   }
+
+
+
+   /*******************************************************************************
+    ** Getter for childTableMetaData
+    **
+    *******************************************************************************/
+   public QTableMetaData getChildTableMetaData()
+   {
+      return childTableMetaData;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for childTableMetaData
+    **
+    *******************************************************************************/
+   public void setChildTableMetaData(QTableMetaData childTableMetaData)
+   {
+      this.childTableMetaData = childTableMetaData;
+   }
+
+
+
+   /*******************************************************************************
+    ** Fluent setter for childTableMetaData
+    **
+    *******************************************************************************/
+   public ChildRecordListData withChildTableMetaData(QTableMetaData childTableMetaData)
+   {
+      this.childTableMetaData = childTableMetaData;
+      return (this);
+   }
+
+
+
+   /*******************************************************************************
+    ** Getter for tablePath
+    **
+    *******************************************************************************/
+   public String getTablePath()
+   {
+      return tablePath;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for tablePath
+    **
+    *******************************************************************************/
+   public void setTablePath(String tablePath)
+   {
+      this.tablePath = tablePath;
+   }
+
+
+
+   /*******************************************************************************
+    ** Getter for viewAllLink
+    **
+    *******************************************************************************/
+   public String getViewAllLink()
+   {
+      return viewAllLink;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for viewAllLink
+    **
+    *******************************************************************************/
+   public void setViewAllLink(String viewAllLink)
+   {
+      this.viewAllLink = viewAllLink;
+   }
+}

qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/dashboard/widgets/WidgetType.java

@@ -35,7 +35,8 @@ public enum WidgetType
    QUICK_SIGHT_CHART("quickSightChart"),
    STATISTICS("statistics"),
    STEPPER("stepper"),
-   TABLE("table");
+   TABLE("table"),
+   CHILD_RECORD_LIST("childRecordList");
 
 
    private final String type;

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

@@ -28,10 +28,18 @@ import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.kingsrook.qqq.backend.core.actions.metadata.MetaDataAction;
+import com.kingsrook.qqq.backend.core.exceptions.QException;
 import com.kingsrook.qqq.backend.core.instances.QInstanceValidationKey;
+import com.kingsrook.qqq.backend.core.model.actions.AbstractActionInput;
+import com.kingsrook.qqq.backend.core.model.actions.metadata.MetaDataInput;
+import com.kingsrook.qqq.backend.core.model.actions.metadata.MetaDataOutput;
 import com.kingsrook.qqq.backend.core.model.metadata.automation.QAutomationProviderMetaData;
 import com.kingsrook.qqq.backend.core.model.metadata.branding.QBrandingMetaData;
 import com.kingsrook.qqq.backend.core.model.metadata.dashboard.QWidgetMetaDataInterface;
+import com.kingsrook.qqq.backend.core.model.metadata.frontend.AppTreeNode;
+import com.kingsrook.qqq.backend.core.model.metadata.frontend.AppTreeNodeType;
+import com.kingsrook.qqq.backend.core.model.metadata.joins.QJoinMetaData;
 import com.kingsrook.qqq.backend.core.model.metadata.layout.QAppMetaData;
 import com.kingsrook.qqq.backend.core.model.metadata.possiblevalues.QPossibleValueSource;
 import com.kingsrook.qqq.backend.core.model.metadata.processes.QProcessMetaData;
@@ -64,6 +72,7 @@ public class QInstance
    // Important to use LinkedHashmap here, to preserve the order in which entries are added. //
    ////////////////////////////////////////////////////////////////////////////////////////////
    private Map<String, QTableMetaData>       tables               = new LinkedHashMap<>();
+   private Map<String, QJoinMetaData>        joins                = new LinkedHashMap<>();
    private Map<String, QPossibleValueSource> possibleValueSources = new LinkedHashMap<>();
    private Map<String, QProcessMetaData>     processes            = new LinkedHashMap<>();
    private Map<String, QAppMetaData>         apps                 = new LinkedHashMap<>();
@@ -79,6 +88,9 @@ public class QInstance
    @JsonIgnore
    private boolean hasBeenValidated = false;
 
+   private Map<String, String> memoizedTablePaths   = new HashMap<>();
+   private Map<String, String> memoizedProcessPaths = new HashMap<>();
+
 
 
    /*******************************************************************************
@@ -118,6 +130,71 @@ public class QInstance
 
 
 
+   /*******************************************************************************
+    ** Get the full path to a table
+    *******************************************************************************/
+   public String getTablePath(AbstractActionInput actionInput, String tableName) throws QException
+   {
+      if(!memoizedTablePaths.containsKey(tableName))
+      {
+         MetaDataInput input = new MetaDataInput(this);
+         input.setSession(actionInput.getSession());
+         MetaDataOutput output = new MetaDataAction().execute(input);
+         memoizedTablePaths.put(tableName, searchAppTree(output.getAppTree(), tableName, AppTreeNodeType.TABLE, ""));
+      }
+      return (memoizedTablePaths.get(tableName));
+   }
+
+
+
+   /*******************************************************************************
+    ** Get the full path to a process
+    *******************************************************************************/
+   public String getProcessPath(AbstractActionInput actionInput, String processName) throws QException
+   {
+      if(!memoizedProcessPaths.containsKey(processName))
+      {
+         MetaDataInput input = new MetaDataInput(this);
+         input.setSession(actionInput.getSession());
+         MetaDataOutput output = new MetaDataAction().execute(input);
+         return searchAppTree(output.getAppTree(), processName, AppTreeNodeType.PROCESS, "");
+      }
+      return (memoizedProcessPaths.get(processName));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   private String searchAppTree(List<AppTreeNode> appTree, String tableName, AppTreeNodeType treeNodeType, String path)
+   {
+      if(appTree == null)
+      {
+         return (null);
+      }
+
+      for(AppTreeNode appTreeNode : appTree)
+      {
+         if(appTreeNode.getType().equals(treeNodeType) && appTreeNode.getName().equals(tableName))
+         {
+            return (path + "/" + tableName);
+         }
+         else if(appTreeNode.getType().equals(AppTreeNodeType.APP))
+         {
+            String subResult = searchAppTree(appTreeNode.getChildren(), tableName, treeNodeType, path + "/" + appTreeNode.getName());
+            if(subResult != null)
+            {
+               return (subResult);
+            }
+         }
+      }
+
+      return (null);
+   }
+
+
+
    /*******************************************************************************
     **
     *******************************************************************************/
@@ -243,6 +320,71 @@ public class QInstance
 
 
 
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public void addJoin(QJoinMetaData join)
+   {
+      addJoin(join.getName(), join);
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public void addJoin(String name, QJoinMetaData join)
+   {
+      if(!StringUtils.hasContent(name))
+      {
+         throw (new IllegalArgumentException("Attempted to add a join without a name."));
+      }
+      if(this.joins.containsKey(name))
+      {
+         throw (new IllegalArgumentException("Attempted to add a second join with name: " + name));
+      }
+      this.joins.put(name, join);
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public QJoinMetaData getJoin(String name)
+   {
+      if(this.joins == null)
+      {
+         return (null);
+      }
+
+      return (this.joins.get(name));
+   }
+
+
+
+   /*******************************************************************************
+    ** Getter for joins
+    **
+    *******************************************************************************/
+   public Map<String, QJoinMetaData> getJoins()
+   {
+      return joins;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for joins
+    **
+    *******************************************************************************/
+   public void setJoins(Map<String, QJoinMetaData> joins)
+   {
+      this.joins = joins;
+   }
+
+
+
    /*******************************************************************************
     **
     *******************************************************************************/

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

@@ -35,7 +35,6 @@ import com.kingsrook.qqq.backend.core.model.metadata.fields.QFieldMetaData;
 import com.kingsrook.qqq.backend.core.model.metadata.tables.Capability;
 import com.kingsrook.qqq.backend.core.model.metadata.tables.QFieldSection;
 import com.kingsrook.qqq.backend.core.model.metadata.tables.QTableMetaData;
-import com.kingsrook.qqq.backend.core.utils.CollectionUtils;
 
 
 /*******************************************************************************
@@ -92,11 +91,6 @@ public class QFrontendTableMetaData
          this.iconName = tableMetaData.getIcon().getName();
       }
 
-      if(CollectionUtils.nullSafeHasContents(tableMetaData.getWidgets()))
-      {
-         this.widgets = tableMetaData.getWidgets();
-      }
-
       setCapabilities(backendForTable, tableMetaData);
    }
 

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

@@ -0,0 +1,123 @@
+/*
+ * 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.model.metadata.joins;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+public class JoinOn
+{
+   private String leftField;
+   private String rightField;
+
+
+
+   /*******************************************************************************
+    ** Constructor
+    **
+    *******************************************************************************/
+   public JoinOn()
+   {
+   }
+
+
+
+   /*******************************************************************************
+    ** Constructor
+    **
+    *******************************************************************************/
+   public JoinOn(String leftField, String rightField)
+   {
+      this.leftField = leftField;
+      this.rightField = rightField;
+   }
+
+
+
+   /*******************************************************************************
+    ** Getter for leftField
+    **
+    *******************************************************************************/
+   public String getLeftField()
+   {
+      return leftField;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for leftField
+    **
+    *******************************************************************************/
+   public void setLeftField(String leftField)
+   {
+      this.leftField = leftField;
+   }
+
+
+
+   /*******************************************************************************
+    ** Fluent setter for leftField
+    **
+    *******************************************************************************/
+   public JoinOn withLeftField(String leftField)
+   {
+      this.leftField = leftField;
+      return (this);
+   }
+
+
+
+   /*******************************************************************************
+    ** Getter for rightField
+    **
+    *******************************************************************************/
+   public String getRightField()
+   {
+      return rightField;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for rightField
+    **
+    *******************************************************************************/
+   public void setRightField(String rightField)
+   {
+      this.rightField = rightField;
+   }
+
+
+
+   /*******************************************************************************
+    ** Fluent setter for rightField
+    **
+    *******************************************************************************/
+   public JoinOn withRightField(String rightField)
+   {
+      this.rightField = rightField;
+      return (this);
+   }
+
+}

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

@@ -0,0 +1,41 @@
+/*
+ * 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.model.metadata.joins;
+
+
+/*******************************************************************************
+ ** Type for a QJoin.
+ **
+ ** - One to One - what about zero??
+ ** - One to Many - e.g., where the parent record really "owns" all of the child
+ **      records.  Like Order -> OrderLine.
+ ** - Many to One - e.g., where a child references a parent, but we'd never really
+ **      view or manage all of the children under the parent.
+ ** - Many to Many - e.g., through an intersection table... ? Needs more thought.
+ *******************************************************************************/
+public enum JoinType
+{
+   ONE_TO_ONE,
+   ONE_TO_MANY,
+   MANY_TO_ONE,
+   MANY_TO_MANY
+}

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

@@ -0,0 +1,293 @@
+/*
+ * 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.model.metadata.joins;
+
+
+import java.util.ArrayList;
+import java.util.List;
+import com.kingsrook.qqq.backend.core.model.actions.tables.query.QFilterOrderBy;
+import com.kingsrook.qqq.backend.core.utils.StringUtils;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+public class QJoinMetaData
+{
+   private String   name;
+   private JoinType type;
+   private String   leftTable;
+   private String   rightTable;
+
+   private List<JoinOn>         joinOns;
+   private List<QFilterOrderBy> orderBys;
+
+
+
+   /*******************************************************************************
+    ** Getter for name
+    **
+    *******************************************************************************/
+   public String getName()
+   {
+      return name;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for name
+    **
+    *******************************************************************************/
+   public void setName(String name)
+   {
+      this.name = name;
+   }
+
+
+
+   /*******************************************************************************
+    ** Fluent setter for name
+    **
+    *******************************************************************************/
+   public QJoinMetaData withName(String name)
+   {
+      this.name = name;
+      return (this);
+   }
+
+
+
+   /*******************************************************************************
+    ** Getter for type
+    **
+    *******************************************************************************/
+   public JoinType getType()
+   {
+      return type;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for type
+    **
+    *******************************************************************************/
+   public void setType(JoinType type)
+   {
+      this.type = type;
+   }
+
+
+
+   /*******************************************************************************
+    ** Fluent setter for type
+    **
+    *******************************************************************************/
+   public QJoinMetaData withType(JoinType type)
+   {
+      this.type = type;
+      return (this);
+   }
+
+
+
+   /*******************************************************************************
+    ** Getter for leftTable
+    **
+    *******************************************************************************/
+   public String getLeftTable()
+   {
+      return leftTable;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for leftTable
+    **
+    *******************************************************************************/
+   public void setLeftTable(String leftTable)
+   {
+      this.leftTable = leftTable;
+   }
+
+
+
+   /*******************************************************************************
+    ** Fluent setter for leftTable
+    **
+    *******************************************************************************/
+   public QJoinMetaData withLeftTable(String leftTable)
+   {
+      this.leftTable = leftTable;
+      return (this);
+   }
+
+
+
+   /*******************************************************************************
+    ** Getter for rightTable
+    **
+    *******************************************************************************/
+   public String getRightTable()
+   {
+      return rightTable;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for rightTable
+    **
+    *******************************************************************************/
+   public void setRightTable(String rightTable)
+   {
+      this.rightTable = rightTable;
+   }
+
+
+
+   /*******************************************************************************
+    ** Fluent setter for rightTable
+    **
+    *******************************************************************************/
+   public QJoinMetaData withRightTable(String rightTable)
+   {
+      this.rightTable = rightTable;
+      return (this);
+   }
+
+
+
+   /*******************************************************************************
+    ** Getter for joinOns
+    **
+    *******************************************************************************/
+   public List<JoinOn> getJoinOns()
+   {
+      return joinOns;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for joinOns
+    **
+    *******************************************************************************/
+   public void setJoinOns(List<JoinOn> joinOns)
+   {
+      this.joinOns = joinOns;
+   }
+
+
+
+   /*******************************************************************************
+    ** Fluent setter for joinOns
+    **
+    *******************************************************************************/
+   public QJoinMetaData withJoinOns(List<JoinOn> joinOns)
+   {
+      this.joinOns = joinOns;
+      return (this);
+   }
+
+
+
+   /*******************************************************************************
+    ** Fluent setter for joinOns
+    **
+    *******************************************************************************/
+   public QJoinMetaData withJoinOn(JoinOn joinOn)
+   {
+      if(this.joinOns == null)
+      {
+         this.joinOns = new ArrayList<>();
+      }
+      this.joinOns.add(joinOn);
+      return (this);
+   }
+
+
+
+   /*******************************************************************************
+    ** Getter for orderBys
+    **
+    *******************************************************************************/
+   public List<QFilterOrderBy> getOrderBys()
+   {
+      return orderBys;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for orderBys
+    **
+    *******************************************************************************/
+   public void setOrderBys(List<QFilterOrderBy> orderBys)
+   {
+      this.orderBys = orderBys;
+   }
+
+
+
+   /*******************************************************************************
+    ** Fluent setter for orderBys
+    **
+    *******************************************************************************/
+   public QJoinMetaData withOrderBys(List<QFilterOrderBy> orderBys)
+   {
+      this.orderBys = orderBys;
+      return (this);
+   }
+
+
+
+   /*******************************************************************************
+    ** Fluent setter for orderBys
+    **
+    *******************************************************************************/
+   public QJoinMetaData withOrderBy(QFilterOrderBy orderBy)
+   {
+      if(this.orderBys == null)
+      {
+         this.orderBys = new ArrayList<>();
+      }
+      this.orderBys.add(orderBy);
+      return (this);
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public QJoinMetaData withInferredName()
+   {
+      if(!StringUtils.hasContent(getLeftTable()) || !StringUtils.hasContent(getRightTable()))
+      {
+         throw (new IllegalStateException("Missing either a left or right table name when trying to set inferred name for join"));
+      }
+      return (withName(getLeftTable() + "Join" + getRightTable()));
+   }
+}

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

@@ -28,6 +28,7 @@ import com.kingsrook.qqq.backend.core.model.metadata.layout.QIcon;
 
 /*******************************************************************************
  ** A section of fields - a logical grouping.
+ ** TODO - this class should be named QTableSection!
  *******************************************************************************/
 public class QFieldSection
 {
@@ -36,6 +37,7 @@ public class QFieldSection
    private Tier   tier;
 
    private List<String> fieldNames;
+   private String       widgetName;
    private QIcon        icon;
 
    private boolean isHidden = false;
@@ -78,6 +80,18 @@ public class QFieldSection
 
 
 
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public QFieldSection(String name, QIcon icon, Tier tier)
+   {
+      this.name = name;
+      this.icon = icon;
+      this.tier = tier;
+   }
+
+
+
    /*******************************************************************************
     ** Getter for name
     **
@@ -280,4 +294,38 @@ public class QFieldSection
       return (this);
    }
 
+
+
+   /*******************************************************************************
+    ** Getter for widgetName
+    **
+    *******************************************************************************/
+   public String getWidgetName()
+   {
+      return widgetName;
+   }
+
+
+
+   /*******************************************************************************
+    ** Setter for widgetName
+    **
+    *******************************************************************************/
+   public void setWidgetName(String widgetName)
+   {
+      this.widgetName = widgetName;
+   }
+
+
+
+   /*******************************************************************************
+    ** Fluent setter for widgetName
+    **
+    *******************************************************************************/
+   public QFieldSection withWidgetName(String widgetName)
+   {
+      this.widgetName = widgetName;
+      return (this);
+   }
+
 }

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

@@ -80,7 +80,6 @@ public class QTableMetaData implements QAppChildMetaData, Serializable
 
    private List<QFieldSection> sections;
 
-   private List<String>           widgets;
    private List<AssociatedScript> associatedScripts;
 
    private Set<Capability> enabledCapabilities  = new HashSet<>();
@@ -726,40 +725,6 @@ public class QTableMetaData implements QAppChildMetaData, Serializable
 
 
 
-   /*******************************************************************************
-    ** Getter for widgets
-    **
-    *******************************************************************************/
-   public List<String> getWidgets()
-   {
-      return widgets;
-   }
-
-
-
-   /*******************************************************************************
-    ** Setter for widgets
-    **
-    *******************************************************************************/
-   public void setWidgets(List<String> widgets)
-   {
-      this.widgets = widgets;
-   }
-
-
-
-   /*******************************************************************************
-    ** Fluent setter for widgets
-    **
-    *******************************************************************************/
-   public QTableMetaData withWidgets(List<String> widgets)
-   {
-      this.widgets = widgets;
-      return (this);
-   }
-
-
-
    /*******************************************************************************
     ** Getter for associatedScripts
     **

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

@@ -128,6 +128,8 @@ public class MemoryRecordStore
          }
       }
 
+      BackendQueryFilterUtils.sortRecordList(input.getFilter(), records);
+
       return (records);
    }
 

qqq-backend-core/src/test/java/com/kingsrook/qqq/backend/core/utils/TestUtils.java

@@ -44,6 +44,7 @@ import com.kingsrook.qqq.backend.core.model.actions.processes.RunBackendStepOutp
 import com.kingsrook.qqq.backend.core.model.actions.tables.insert.InsertInput;
 import com.kingsrook.qqq.backend.core.model.actions.tables.query.QCriteriaOperator;
 import com.kingsrook.qqq.backend.core.model.actions.tables.query.QFilterCriteria;
+import com.kingsrook.qqq.backend.core.model.actions.tables.query.QFilterOrderBy;
 import com.kingsrook.qqq.backend.core.model.actions.tables.query.QQueryFilter;
 import com.kingsrook.qqq.backend.core.model.actions.tables.query.QueryInput;
 import com.kingsrook.qqq.backend.core.model.actions.tables.query.QueryOutput;
@@ -62,6 +63,9 @@ import com.kingsrook.qqq.backend.core.model.metadata.dashboard.QWidgetMetaData;
 import com.kingsrook.qqq.backend.core.model.metadata.fields.DisplayFormat;
 import com.kingsrook.qqq.backend.core.model.metadata.fields.QFieldMetaData;
 import com.kingsrook.qqq.backend.core.model.metadata.fields.QFieldType;
+import com.kingsrook.qqq.backend.core.model.metadata.joins.JoinOn;
+import com.kingsrook.qqq.backend.core.model.metadata.joins.JoinType;
+import com.kingsrook.qqq.backend.core.model.metadata.joins.QJoinMetaData;
 import com.kingsrook.qqq.backend.core.model.metadata.layout.QAppMetaData;
 import com.kingsrook.qqq.backend.core.model.metadata.possiblevalues.PVSValueFormatAndFields;
 import com.kingsrook.qqq.backend.core.model.metadata.possiblevalues.QPossibleValue;
@@ -118,6 +122,8 @@ public class TestUtils
 
    public static final String TABLE_NAME_PERSON    = "person";
    public static final String TABLE_NAME_SHAPE     = "shape";
+   public static final String TABLE_NAME_ORDER     = "order";
+   public static final String TABLE_NAME_LINE_ITEM = "orderLine";
 
    public static final String PROCESS_NAME_GREET_PEOPLE             = "greet";
    public static final String PROCESS_NAME_GREET_PEOPLE_INTERACTIVE = "greetInteractive";
@@ -161,6 +167,10 @@ public class TestUtils
       qInstance.addTable(defineTableIdAndNameOnly());
       qInstance.addTable(defineTableShape());
       qInstance.addTable(defineTableBasepull());
+      qInstance.addTable(defineTableOrder());
+      qInstance.addTable(defineTableLineItem());
+
+      qInstance.addJoin(defineJoinOrderLineItem());
 
       qInstance.addPossibleValueSource(defineAutomationStatusPossibleValueSource());
       qInstance.addPossibleValueSource(defineStatesPossibleValueSource());
@@ -444,6 +454,60 @@ public class TestUtils
 
 
 
+   /*******************************************************************************
+    ** Define the order table used in standard tests.
+    *******************************************************************************/
+   public static QTableMetaData defineTableOrder()
+   {
+      return new QTableMetaData()
+         .withName(TABLE_NAME_ORDER)
+         .withBackendName(MEMORY_BACKEND_NAME)
+         .withPrimaryKeyField("id")
+         .withField(new QFieldMetaData("id", QFieldType.INTEGER).withIsEditable(false))
+         .withField(new QFieldMetaData("createDate", QFieldType.DATE_TIME).withIsEditable(false))
+         .withField(new QFieldMetaData("modifyDate", QFieldType.DATE_TIME).withIsEditable(false))
+         .withField(new QFieldMetaData("orderDate", QFieldType.DATE))
+         .withField(new QFieldMetaData("total", QFieldType.DECIMAL).withDisplayFormat(DisplayFormat.CURRENCY));
+   }
+
+
+
+   /*******************************************************************************
+    ** Define the lineItem table used in standard tests.
+    *******************************************************************************/
+   public static QTableMetaData defineTableLineItem()
+   {
+      return new QTableMetaData()
+         .withName(TABLE_NAME_LINE_ITEM)
+         .withBackendName(MEMORY_BACKEND_NAME)
+         .withPrimaryKeyField("id")
+         .withField(new QFieldMetaData("id", QFieldType.INTEGER).withIsEditable(false))
+         .withField(new QFieldMetaData("createDate", QFieldType.DATE_TIME).withIsEditable(false))
+         .withField(new QFieldMetaData("modifyDate", QFieldType.DATE_TIME).withIsEditable(false))
+         .withField(new QFieldMetaData("orderId", QFieldType.INTEGER))
+         .withField(new QFieldMetaData("lineNumber", QFieldType.STRING))
+         .withField(new QFieldMetaData("sku", QFieldType.STRING))
+         .withField(new QFieldMetaData("quantity", QFieldType.INTEGER));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public static QJoinMetaData defineJoinOrderLineItem()
+   {
+      return new QJoinMetaData()
+         .withName("orderLineItem")
+         .withType(JoinType.ONE_TO_MANY)
+         .withLeftTable(TABLE_NAME_ORDER)
+         .withRightTable(TABLE_NAME_LINE_ITEM)
+         .withJoinOn(new JoinOn("id", "orderId"))
+         .withOrderBy(new QFilterOrderBy("lineNumber"));
+   }
+
+
+
    /*******************************************************************************
     **
     *******************************************************************************/