ci: use the shared branch-aware CodeQL worker

Co-Authored-By: Codex <noreply@openai.com>

.circleci/config.yml

@@ -1,60 +1,14 @@
 version: 2.1
-
+setup: true
 orbs:
-   qqq-orb: kingsrook/qqq-orb@0.6.9
-
-commands:
-   configure-package-install:
-      steps:
-         - run:
-              name: Keep package installation unattended
-              command: |
-                 # These build machines are discarded after the job.
-                 sudo install -d /etc/needrestart/conf.d
-                 printf '%s\n' '$nrconf{restart} = "l";' | sudo tee /etc/needrestart/conf.d/99-qqq-ci.conf >/dev/null
-
+  qqq-orb: kingsrook/qqq-orb@0.7.12
 workflows:
-   test_only:
-      jobs:
-         - qqq-orb/mvn_test_only:
-              pre-steps:
-                 - configure-package-install
-              context: [qqq-maven-registry-credentials]
-              filters:
-                 branches:
-                    ignore: /(develop|release\/.*)/
-
-   publish_snapshot:
-      jobs:
-         - qqq-orb/mvn_publish:
-              pre-steps:
-                 - configure-package-install
-              context: [qqq-maven-registry-credentials]
-              branch_type: snapshot
-              filters:
-                 branches:
-                    only: [develop]
-
-   publish_release_candidate:
-      jobs:
-         - qqq-orb/mvn_publish:
-              pre-steps:
-                 - configure-package-install
-              context: [qqq-maven-registry-credentials]
-              branch_type: release_candidate
-              filters:
-                 branches:
-                    only: [/release\/.*/]
-
-   publish_release:
-      jobs:
-         - qqq-orb/mvn_publish:
-              pre-steps:
-                 - configure-package-install
-              context: [qqq-maven-registry-credentials]
-              branch_type: release
-              filters:
-                 branches:
-                    ignore: /.*/
-                 tags:
-                    only: [/^v\d+\.\d+\.\d+$/]
+  setup:
+    jobs:
+    - qqq-orb/generate_pipeline:
+        orb_version: 0.7.12
+        filters:
+          branches:
+            ignore: automation/qbit-rc-pending
+          tags:
+            only: /^v\d+\.\d+\.\d+$/

.github/workflows/codeql.yml

@@ -0,0 +1,23 @@
+name: CodeQL
+'on':
+  push:
+    branches:
+    - main
+    - develop
+    - release/**
+    - hotfix/**
+  pull_request: {}
+  schedule:
+  - cron: 41 16 * * 0
+  workflow_dispatch: {}
+permissions:
+  contents: read
+  actions: read
+  security-events: write
+  packages: read
+concurrency:
+  group: codeql-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+jobs:
+  analyze:
+    uses: QRun-IO/qqq-orb/.github/workflows/qbit-codeql.yml@c288a8864fe9054f68410e1d78f5863aea4c4d22

.github/workflows/release-rc.yml

@@ -1,25 +1,74 @@
-# Cut the next release candidate (QRun-IO/qqq docs/QRUN-QBIT-REPO-STANDARD.md, C6):
-# run this workflow by hand, or merge a develop PR labelled `release:rc`. It merges develop into
-# the release line and the release/* push runs CircleCI publish_release_candidate.
 name: Release candidate
-
-on:
+'on':
   workflow_dispatch:
     inputs:
       dry_run:
-        description: Print the plan without merging or creating branches
+        description: Plan a cut without changing release state
         type: boolean
         default: false
+      finalize:
+        description: Retry finalization of an existing cut; do not cut another RC
+        type: boolean
+        default: false
+      recover:
+        description: Recover the same published RC after a deployment timeout; never
+          reupload
+        type: boolean
+        default: false
+      circle_build:
+        description: Original Circle publisher build number (recovery only)
+        type: string
+        default: ''
+      merge_sha:
+        description: Existing cut merge_sha (finalize retry only)
+        type: string
+        default: ''
+      bump_sha:
+        description: Existing cut bump_sha (finalize retry only)
+        type: string
+        default: ''
+      branch:
+        description: Existing cut branch (finalize retry only)
+        type: string
+        default: ''
+      version:
+        description: Existing cut version (finalize retry only)
+        type: string
+        default: ''
   pull_request:
-    types: [closed]
-    branches: [develop]
-
+    types:
+    - closed
+    branches:
+    - develop
+  repository_dispatch:
+    types:
+    - qbit-rc-published
 permissions:
   contents: write
-
+  actions: read
+  checks: read
 jobs:
   release-rc:
-    if: github.event_name == 'workflow_dispatch' || (github.event.pull_request.merged == true && contains(github.event.pull_request.labels.*.name, 'release:rc'))
-    uses: QRun-IO/.github/.github/workflows/qbit-release-rc.yml@main
+    if: github.event_name == 'workflow_dispatch' || github.event_name == 'repository_dispatch'
+      || (github.event_name == 'pull_request' && github.event.pull_request.merged
+      == true && github.event.pull_request.base.ref == 'develop' && contains(github.event.pull_request.labels.*.name,
+      'release:rc'))
+    uses: QRun-IO/qqq-orb/.github/workflows/qbit-release-rc.yml@cc30f599e63c8e41629c99d23395bac1adb8bc44
     with:
-      dry_run: ${{ github.event_name == 'workflow_dispatch' && inputs.dry_run }}
+      dry_run: ${{ github.event_name == 'workflow_dispatch' && inputs.dry_run || false
+        }}
+      finalize: ${{ github.event_name == 'repository_dispatch' || (github.event_name
+        == 'workflow_dispatch' && inputs.finalize) }}
+      recover: ${{ github.event_name == 'workflow_dispatch' && inputs.recover || false
+        }}
+      circle_build: ${{ github.event_name == 'workflow_dispatch' && inputs.circle_build
+        || '' }}
+      merge_sha: ${{ github.event_name == 'repository_dispatch' && github.event.client_payload.merge_sha
+        || inputs.merge_sha || '' }}
+      bump_sha: ${{ github.event_name == 'repository_dispatch' && github.event.client_payload.bump_sha
+        || inputs.bump_sha || '' }}
+      branch: ${{ github.event_name == 'repository_dispatch' && github.event.client_payload.branch
+        || inputs.branch || '' }}
+      version: ${{ github.event_name == 'repository_dispatch' && github.event.client_payload.version
+        || inputs.version || '' }}
+    secrets: inherit

.qqq-ci.yml

@@ -0,0 +1,16 @@
+profile: qbit
+orb_version: 0.7.12
+default_branch: develop
+java_version: '21'
+browsers: true
+api_checks: false
+docs_only: false
+release_on_main: false
+release_tag_policy: stable
+test_branch_policy: non-release
+publish:
+  snapshot: true
+  release_candidate: true
+  release: true
+  asciidoc: false
+release_completion: true

CHANGELOG.md

@@ -4,6 +4,12 @@ Following [Keep a Changelog](https://keepachangelog.com/en/1.1.0/) and [Semantic
 
 ## [Unreleased]
 
+### Fixed
+
+- Scheduled analyses and watches work under OAuth2. When the host declares the `data-analysis` service principal (QQQ service identities, `DataAnalysisQBitConfig.withServicePrincipal`), schedule and watch inventory runs as that principal, and owner and recipient runs go on their behalf through it: their current access intersected with the principal's. The self-made `data-analysis-scheduler` session was rejected under OAuth2 (`Invalid session in request` on every `data_analysis_run_schedules` run). With no principal declared, behavior is unchanged. Needs the QQQ release with service identities (qqq#1255, #1256).
+- QBit metadata now reports the Maven artifact version, including release versions, from a filtered build resource.
+- The Data Analysis home no longer shows the engine Setup card or "Unavailable: READ permission required." shells. Setup is admin-only (hidden from everyone else) and off the home; hosts place `DataAnalysisQBitProducer.SYSTEM_WIDGETS` on their Admin area. Home widgets the user cannot read are omitted from metadata, and unreadable groups are left out of the overview.
+
 ### Added
 
 - Complete host-neutral in-app help bundle with live metadata references and a core help coverage gate.
@@ -42,6 +48,8 @@ Following [Keep a Changelog](https://keepachangelog.com/en/1.1.0/) and [Semantic
 
 ### Changed
 
+- UI API extension data-analysis 1.5.0 (requires QQQ 4.1.0-RC.15, UI API 1.6.0): operationIds, standard error responses with BasicErrorResponseV1, extension tags, contract validation for operationIds and schema references, and HTTP error envelope regression assertions.
+
 - Pin QQQ 4.1.0-RC.7 and replace the temporary help loader with core bundle registration and startup sync.
 
 - Boolean pivot/crosstab headers now say Yes / No / (Blank). Pivot measures use human labels such as Count, Average Amount, Sum of Amount, Distinct Email, Median Amount and 90th percentile of Amount.

pom.xml

@@ -18,7 +18,7 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
    <properties>
-      <revision>0.1.0-RC.3</revision>
+      <revision>0.1.0-SNAPSHOT</revision>
       <maven.compiler.source>21</maven.compiler.source>
       <maven.compiler.target>21</maven.compiler.target>
       <jacoco.version>0.8.15</jacoco.version>
@@ -128,7 +128,35 @@
    </dependencies>
 
    <build>
+      <resources>
+         <!-- help bundles carry the artifact version (QQQ help bundle provenance) -->
+         <resource>
+            <directory>src/main/resources</directory>
+            <filtering>true</filtering>
+            <includes>
+               <include>help/*.yaml</include>
+               <include>qbit-data-analysis.properties</include>
+            </includes>
+         </resource>
+         <resource>
+            <directory>src/main/resources</directory>
+            <filtering>false</filtering>
+            <excludes>
+               <exclude>help/*.yaml</exclude>
+               <exclude>qbit-data-analysis.properties</exclude>
+            </excludes>
+         </resource>
+      </resources>
       <plugins>
+         <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-surefire-plugin</artifactId>
+            <configuration>
+               <systemPropertyVariables combine.children="append">
+                  <qbit.artifactVersion>${project.version}</qbit.artifactVersion>
+               </systemPropertyVariables>
+            </configuration>
+         </plugin>
          <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-checkstyle-plugin</artifactId>
@@ -215,7 +243,7 @@
             <activeByDefault>true</activeByDefault>
          </activation>
          <properties>
-            <qqq.snapshot.version>4.1.0-RC.7</qqq.snapshot.version>
+            <qqq.snapshot.version>4.1.0-RC.19</qqq.snapshot.version>
          </properties>
          <dependencyManagement>
             <dependencies>

src/main/java/com/kingsrook/qbits/dataanalysis/DataAnalysisQBitConfig.java

@@ -427,6 +427,28 @@ public class DataAnalysisQBitConfig implements QBitConfig
       return (this);
    }
 
+   private String servicePrincipal = "data-analysis";
+
+   /*******************************************************************************
+    ** The service principal schedules and watches run as when the host declares
+    ** it (QQQ service identities): inventory as the principal, owner and
+    ** recipient runs on their behalf through it. Undeclared: the previous local
+    ** sessions.
+    *******************************************************************************/
+   public String getServicePrincipal()
+   {
+      return (servicePrincipal);
+   }
+
+   /*******************************************************************************
+    ** Fluent setter for servicePrincipal (default data-analysis).
+    *******************************************************************************/
+   public DataAnalysisQBitConfig withServicePrincipal(String servicePrincipal)
+   {
+      this.servicePrincipal = servicePrincipal;
+      return (this);
+   }
+
    private String messagingProviderName;
    private String fromAddress;
    private transient java.util.function.Function<String, String> recipientAddressSupplier;

src/main/java/com/kingsrook/qbits/dataanalysis/DataAnalysisQBitProducer.java

@@ -21,7 +21,12 @@
 package com.kingsrook.qbits.dataanalysis;
 
 
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.List;
+import java.util.Properties;
 import com.kingsrook.qbits.dataanalysis.api.DataAnalysisApi;
+import com.kingsrook.qbits.dataanalysis.app.DataAnalysisHome;
 import com.kingsrook.qqq.backend.core.exceptions.QException;
 import com.kingsrook.qqq.backend.core.model.metadata.MetaDataProducerMultiOutput;
 import com.kingsrook.qqq.backend.core.model.metadata.QInstance;
@@ -40,13 +45,48 @@ public class DataAnalysisQBitProducer implements QBitMetaDataProducer<DataAnalys
 {
    public static final String GROUP_ID = "com.kingsrook.qbits";
    public static final String ARTIFACT_ID = "qbit-data-analysis";
-   public static final String VERSION = "0.1.0";
+   public static final String VERSION = loadVersion();
+
+   /////////////////////////////////////////////////////////////////////////////////
+   // Widgets that show engine configuration. They are registered with the qbit   //
+   // (admin-only, hidden from everyone else) but kept off the business home; the //
+   // host places them on its Admin area, e.g. withWidgets(SYSTEM_WIDGETS).       //
+   /////////////////////////////////////////////////////////////////////////////////
+   public static final List<String> SYSTEM_WIDGETS = List.of(DataAnalysisHome.SETUP);
 
    private DataAnalysisQBitConfig qBitConfig;
    private String namespace;
 
 
 
+   /*******************************************************************************
+    ** Read the artifact version from the Maven-filtered properties resource.
+    *******************************************************************************/
+   private static String loadVersion()
+   {
+      try(InputStream inputStream = DataAnalysisQBitProducer.class.getClassLoader().getResourceAsStream("qbit-data-analysis.properties"))
+      {
+         if(inputStream == null)
+         {
+            throw (new IllegalStateException("Missing qbit-data-analysis.properties; build with Maven to generate the artifact version"));
+         }
+         Properties properties = new Properties();
+         properties.load(inputStream);
+         String version = properties.getProperty("version");
+         if(version == null || version.isBlank() || version.contains("${"))
+         {
+            throw (new IllegalStateException("Missing or unfiltered version in qbit-data-analysis.properties; build with Maven resource filtering"));
+         }
+         return (version);
+      }
+      catch(IOException e)
+      {
+         throw (new IllegalStateException("Could not read artifact version from qbit-data-analysis.properties", e));
+      }
+   }
+
+
+
    /*******************************************************************************
     ** Fluent configuration setter.
     *******************************************************************************/

src/main/java/com/kingsrook/qbits/dataanalysis/api/DataAnalysisApi.java

@@ -76,7 +76,7 @@ public class DataAnalysisApi
     *******************************************************************************/
    public static MiddlewareSpecExtension extension()
    {
-      return (new MiddlewareSpecExtension().withName("data-analysis").withSemanticVersion("1.4.0")
+      return (new MiddlewareSpecExtension().withName("data-analysis").withSemanticVersion("1.5.0")
          .withDescription("Profiles, pivots, comparisons, distribution shifts, correlations, scatter samples, crosstabs and anomaly watch previews as the signed-in user.")
          .withSpec(SavedApi.Run.class).withSpec(SavedApi.ListSaved.class).withSpec(SavedApi.Star.class).withSpec(SavedApi.Unstar.class)
          .withSpec(SavedApi.Sql.class).withSpec(AnalysisFileSpec.class).withSpec(AnalysisFileSpec.Saved.class)

src/main/java/com/kingsrook/qbits/dataanalysis/app/DataAnalysisHome.java

@@ -28,14 +28,17 @@ import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import com.kingsrook.qbits.dataanalysis.DataAnalysisQBitConfig;
+import com.kingsrook.qbits.dataanalysis.DataAnalysisQBitProducer;
 import com.kingsrook.qbits.dataanalysis.DataAnalysisRuntime;
 import com.kingsrook.qbits.dataanalysis.engine.DrillFilters;
 import com.kingsrook.qbits.dataanalysis.model.DataAnalysisTables;
+import com.kingsrook.qbits.dataanalysis.permissions.DataAnalysisPermissions;
 import com.kingsrook.qbits.dataanalysis.saved.SavedAnalyses;
 import com.kingsrook.qqq.backend.core.actions.dashboard.widgets.AbstractWidgetRenderer;
 import com.kingsrook.qqq.backend.core.actions.permissions.PermissionEnforcement;
 import com.kingsrook.qqq.backend.core.actions.permissions.PermissionsHelper;
 import com.kingsrook.qqq.backend.core.actions.permissions.TablePermissionSubType;
+import com.kingsrook.qqq.backend.core.actions.permissions.UseOtherPermissionNameCustomPermissionChecker;
 import com.kingsrook.qqq.backend.core.actions.tables.CountAction;
 import com.kingsrook.qqq.backend.core.context.QContext;
 import com.kingsrook.qqq.backend.core.exceptions.QException;
@@ -54,6 +57,7 @@ import com.kingsrook.qqq.backend.core.model.metadata.dashboard.QWidgetMetaData;
 import com.kingsrook.qqq.backend.core.model.metadata.layout.QAppMetaData;
 import com.kingsrook.qqq.backend.core.model.metadata.layout.QAppSection;
 import com.kingsrook.qqq.backend.core.model.metadata.layout.QIcon;
+import com.kingsrook.qqq.backend.core.model.metadata.permissions.DenyBehavior;
 import com.kingsrook.qqq.backend.core.model.metadata.permissions.PermissionLevel;
 import com.kingsrook.qqq.backend.core.model.metadata.permissions.QPermissionRules;
 import com.kingsrook.qqq.backend.core.model.metadata.tables.QTableMetaData;
@@ -82,7 +86,39 @@ public class DataAnalysisHome extends AbstractWidgetRenderer
     *******************************************************************************/
    public static List<QWidgetMetaData> widgets()
    {
-      return (List.of(widget(SETUP, "Setup", WidgetType.TABLE), widget(), widget(STARRED, "Starred analyses", WidgetType.TABLE), widget(FIRING, "Firing watches", WidgetType.TABLE), widget(RECENT, "My recent runs", WidgetType.TABLE)));
+      return (List.of(setupWidget(), widget().withPermissionRules(readRules(DataAnalysisTables.SAVED)),
+         widget(STARRED, "Starred analyses", WidgetType.TABLE).withPermissionRules(readRules(DataAnalysisTables.SAVED)),
+         widget(FIRING, "Firing watches", WidgetType.TABLE).withPermissionRules(readRules(DataAnalysisTables.WATCH)),
+         widget(RECENT, "My recent runs", WidgetType.TABLE).withPermissionRules(readRules(DataAnalysisTables.RUN))));
+   }
+
+   /*******************************************************************************
+    ** Names of the widgets placed on the business home. Setup is system content and
+    ** is deliberately absent; hosts place {@link DataAnalysisQBitProducer#SYSTEM_WIDGETS}
+    ** on their Admin area instead.
+    *******************************************************************************/
+   public static List<String> homeWidgetNames()
+   {
+      return (widgets().stream().map(QWidgetMetaData::getName).filter(name -> !DataAnalysisQBitProducer.SYSTEM_WIDGETS.contains(name)).toList());
+   }
+
+   /*******************************************************************************
+    ** The Setup card shows engine configuration, so only Data Analysis admins get it;
+    ** everyone else has it omitted from metadata.
+    *******************************************************************************/
+   private static QWidgetMetaData setupWidget()
+   {
+      return (widget(SETUP, "Setup", WidgetType.TABLE).withPermissionRules(new QPermissionRules().withLevel(PermissionLevel.HAS_ACCESS_PERMISSION)
+         .withDenyBehavior(DenyBehavior.HIDDEN).withCustomPermissionChecker(UseOtherPermissionNameCustomPermissionChecker.build(DataAnalysisPermissions.ADMIN))));
+   }
+
+   /*******************************************************************************
+    ** A data widget is omitted from metadata for users who cannot read its table.
+    *******************************************************************************/
+   private static QPermissionRules readRules(String table)
+   {
+      return (new QPermissionRules().withLevel(PermissionLevel.HAS_ACCESS_PERMISSION).withDenyBehavior(DenyBehavior.HIDDEN)
+         .withCustomPermissionChecker(TableReadWidgetPermissionChecker.build(table)));
    }
 
    /*******************************************************************************
@@ -101,7 +137,7 @@ public class DataAnalysisHome extends AbstractWidgetRenderer
    public static QAppMetaData app(DataAnalysisQBitConfig config, List<QTableMetaData> tables)
    {
       QAppMetaData app = new QAppMetaData().withName(config.getAppName()).withLabel(config.getAppLabel())
-         .withIcon(new QIcon("insights")).withWidgets(widgets().stream().map(QWidgetMetaData::getName).toList())
+         .withIcon(new QIcon("insights")).withWidgets(homeWidgetNames())
          .withPermissionRules(new QPermissionRules().withLevel(PermissionLevel.NOT_PROTECTED))
          .withSection(new QAppSection().withName("analyses").withLabel("Analyses").withIcon(new QIcon("insights")).withTables(DataAnalysisTables.NAV_TABLES));
       app.setParentAppName(config.getParentAppName());
@@ -197,46 +233,45 @@ public class DataAnalysisHome extends AbstractWidgetRenderer
    }
 
    /*******************************************************************************
-    ** One standard group per subject, with real counts or an unavailable explanation.
+    ** One standard group per subject the viewer can read; unreadable subjects are left out.
     *******************************************************************************/
    public static MultiStatisticsData statistics(Instant now) throws QException
    {
       List<MultiStatisticsData.StatisticsGroupData> groups = new ArrayList<>();
-      var saved = group("Saved analyses", DataAnalysisTables.SAVED);
       if(canRead(DataAnalysisTables.SAVED))
       {
+         var saved = group("Saved analyses");
          List<SavedAnalyses.Entry> entries = DataAnalysisRuntime.saved().list();
          String user = SavedAnalyses.user();
          saved.withStatisticList(List.of(stat("Mine", (int) entries.stream().filter(e -> e.owner().equals(user)).count(), DataAnalysisTables.SAVED),
             stat("Shared", (int) entries.stream().filter(e -> Boolean.TRUE.equals(e.shared())).count(), DataAnalysisTables.SAVED),
             stat("Starred", (int) entries.stream().filter(SavedAnalyses.Entry::starred).count(), DataAnalysisTables.SAVED)));
+         groups.add(saved);
       }
-      groups.add(saved);
-      var watches = group("Watches", DataAnalysisTables.WATCH);
       if(canRead(DataAnalysisTables.WATCH))
       {
+         var watches = group("Watches");
          watches.withStatisticList(List.of(stat("Enabled", count(DataAnalysisTables.WATCH, equal("enabled", true)), DataAnalysisTables.WATCH),
             stat("Firing", count(DataAnalysisTables.WATCH, equal("state", "FIRING")), DataAnalysisTables.WATCH)));
+         groups.add(watches);
       }
-      groups.add(watches);
-      var runs = group("My runs", DataAnalysisTables.RUN);
       if(canRead(DataAnalysisTables.RUN))
       {
+         var runs = group("My runs");
          runs.withStatisticList(List.of(stat("Last 7 days", count(DataAnalysisTables.RUN, equal("user_id", SavedAnalyses.user())
             .withCriteria("started_at", QCriteriaOperator.GREATER_THAN_OR_EQUALS, now.minus(7, ChronoUnit.DAYS))
             .withCriteria("started_at", QCriteriaOperator.LESS_THAN_OR_EQUALS, now)), DataAnalysisTables.RUN)));
+         groups.add(runs);
       }
-      groups.add(runs);
       return (new MultiStatisticsData("Analyses", groups));
    }
 
    /*******************************************************************************
-    ** Empty/denied data are different messages, not synthetic zeroes.
+    ** A group is only built for a readable subject, so its subheader is always true.
     *******************************************************************************/
-   private static MultiStatisticsData.StatisticsGroupData group(String label, String table)
+   private static MultiStatisticsData.StatisticsGroupData group(String label)
    {
-      return (new MultiStatisticsData.StatisticsGroupData().withHeader(label).withStatisticList(List.of())
-         .withSubheader(canRead(table) ? "Visible to you" : "Unavailable: READ permission required."));
+      return (new MultiStatisticsData.StatisticsGroupData().withHeader(label).withStatisticList(List.of()).withSubheader("Visible to you"));
    }
 
    /*******************************************************************************
@@ -257,7 +292,7 @@ public class DataAnalysisHome extends AbstractWidgetRenderer
       {
          columns.add(new TableData.Column(i == 0 ? "html" : "text", headers[i], "c" + i, null, "left"));
       }
-      return (new TableData(label, columns, new ArrayList<>()).withNoRowsFoundHTML(canRead(table) ? empty : "Unavailable: READ permission required.")
+      return (new TableData(label, columns, new ArrayList<>()).withNoRowsFoundHTML(empty)
          .withLinkText("View all").withLinkURL(QContext.getQInstance().getTablePath(table)).withRowsPerPage(10));
    }
 

src/main/java/com/kingsrook/qbits/dataanalysis/app/TableReadWidgetPermissionChecker.java

@@ -0,0 +1,88 @@
+/*
+ * 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/
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.kingsrook.qbits.dataanalysis.app;
+
+
+import java.io.Serializable;
+import java.util.Map;
+import com.kingsrook.qqq.backend.core.actions.permissions.CustomPermissionChecker;
+import com.kingsrook.qqq.backend.core.actions.permissions.PermissionsHelper;
+import com.kingsrook.qqq.backend.core.actions.permissions.TablePermissionSubType;
+import com.kingsrook.qqq.backend.core.exceptions.QPermissionDeniedException;
+import com.kingsrook.qqq.backend.core.model.actions.AbstractActionInput;
+import com.kingsrook.qqq.backend.core.model.actions.AbstractTableActionInput;
+import com.kingsrook.qqq.backend.core.model.metadata.code.InitializableViaCodeReference;
+import com.kingsrook.qqq.backend.core.model.metadata.code.QCodeReference;
+import com.kingsrook.qqq.backend.core.model.metadata.code.QCodeReferenceWithProperties;
+import com.kingsrook.qqq.backend.core.model.metadata.permissions.MetaDataWithPermissionRules;
+import com.kingsrook.qqq.backend.core.utils.ValueUtils;
+import com.kingsrook.qqq.backend.core.utils.collections.MapBuilder;
+
+
+/*******************************************************************************
+ ** A widget is available only to sessions that can READ the table it summarizes.
+ ** Contributes no catalog entry of its own: the table's READ permission is the
+ ** permission.
+ *******************************************************************************/
+public class TableReadWidgetPermissionChecker implements CustomPermissionChecker, InitializableViaCodeReference
+{
+   private static final String TABLE_NAME_PROPERTY = "tableName";
+
+   private String tableName;
+
+
+
+   /*******************************************************************************
+    ** Code reference for the given table.
+    *******************************************************************************/
+   public static QCodeReferenceWithProperties build(String tableName)
+   {
+      return (new QCodeReferenceWithProperties(TableReadWidgetPermissionChecker.class, MapBuilder.of(TABLE_NAME_PROPERTY, tableName)));
+   }
+
+
+
+   /*******************************************************************************
+    ** Read the table name from the code reference properties.
+    *******************************************************************************/
+   @Override
+   public void initialize(QCodeReference codeReference)
+   {
+      if(codeReference instanceof QCodeReferenceWithProperties withProperties)
+      {
+         Map<String, Serializable> properties = withProperties.getProperties();
+         tableName = ValueUtils.getValueAsString(properties.get(TABLE_NAME_PROPERTY));
+      }
+   }
+
+
+
+   /*******************************************************************************
+    ** Deny unless the session may READ the table.
+    *******************************************************************************/
+   @Override
+   public void checkPermissionsThrowing(AbstractActionInput actionInput, MetaDataWithPermissionRules metaDataWithPermissionRules) throws QPermissionDeniedException
+   {
+      AbstractTableActionInput tableInput = new AbstractTableActionInput();
+      tableInput.setTableName(tableName);
+      PermissionsHelper.checkTablePermissionThrowing(tableInput, TablePermissionSubType.READ);
+   }
+}

src/main/java/com/kingsrook/qbits/dataanalysis/schedule/AnalysisSessions.java

@@ -0,0 +1,90 @@
+/*
+ * QQQ - Low-code Application Framework for Engineers.
+ * Copyright (C) 2021-2026.  Kingsrook, LLC
+ * 651 N Broad St Ste 205 # 6917 | Middletown DE 19709 | United States
+ * contact@kingsrook.com
+ * https://github.com/Kingsrook/
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.kingsrook.qbits.dataanalysis.schedule;
+
+
+import java.util.function.Supplier;
+import com.kingsrook.qbits.dataanalysis.DataAnalysisQBitConfig;
+import com.kingsrook.qqq.backend.core.context.QContext;
+import com.kingsrook.qqq.backend.core.exceptions.QException;
+import com.kingsrook.qqq.backend.core.model.session.QSession;
+import com.kingsrook.qqq.backend.core.modules.authentication.QAuthenticationModuleDispatcher;
+import com.kingsrook.qqq.backend.core.serviceidentity.ServiceIdentities;
+
+
+/*******************************************************************************
+ ** Sessions for scheduled analysis work. With the host's data-analysis service
+ ** principal declared (QQQ service identities): inventory runs as the
+ ** principal, and owner or recipient runs go on their behalf through it (their
+ ** current access intersected with the principal's). Without it: the previous
+ ** local sessions (single-node default unchanged). Never a system session.
+ *******************************************************************************/
+public final class AnalysisSessions
+{
+   /*******************************************************************************
+    ** Utility class.
+    *******************************************************************************/
+   private AnalysisSessions()
+   {
+   }
+
+
+
+   /*******************************************************************************
+    ** The session for schedule/watch inventory and status updates.
+    *******************************************************************************/
+   public static QSession maintenance(DataAnalysisQBitConfig config, Supplier<QSession> legacy) throws QException
+   {
+      if(usesPrincipal(config))
+      {
+         return (ServiceIdentities.session(QContext.getQInstance(), config.getServicePrincipal()));
+      }
+      return (legacy.get());
+   }
+
+
+
+   /*******************************************************************************
+    ** The session for running as a user (owner or recipient).
+    *******************************************************************************/
+   public static QSession forUser(DataAnalysisQBitConfig config, String userId) throws QException
+   {
+      if(config.getOwnerSessionSupplier() != null)
+      {
+         return (config.getOwnerSessionSupplier().apply(userId));
+      }
+      if(usesPrincipal(config))
+      {
+         return (ServiceIdentities.sessionOnBehalfOf(QContext.getQInstance(), config.getServicePrincipal(), userId));
+      }
+      return (new QAuthenticationModuleDispatcher().getQModule(QContext.getQInstance().getAuthentication()).createAutomatedSessionForUser(QContext.getQInstance(), userId));
+   }
+
+
+
+   /*******************************************************************************
+    ** Whether the host declared the configured principal.
+    *******************************************************************************/
+   private static boolean usesPrincipal(DataAnalysisQBitConfig config)
+   {
+      return (config.getServicePrincipal() != null && ServiceIdentities.isDeclared(QContext.getQInstance(), config.getServicePrincipal()));
+   }
+}

src/main/java/com/kingsrook/qbits/dataanalysis/schedule/ScheduleRunner.java

@@ -58,7 +58,6 @@ import com.kingsrook.qqq.backend.core.model.actions.tables.update.UpdateInput;
 import com.kingsrook.qqq.backend.core.model.data.QRecord;
 import com.kingsrook.qqq.backend.core.model.session.QSession;
 import com.kingsrook.qqq.backend.core.model.session.QUser;
-import com.kingsrook.qqq.backend.core.modules.authentication.QAuthenticationModuleDispatcher;
 
 /*******************************************************************************
  ** Scheduled work uses owner and recipient sessions; maintenance only inventories rows.
@@ -83,13 +82,17 @@ public class ScheduleRunner
     *******************************************************************************/
    public synchronized Integer runDue(Instant now) throws QException
    {
-      QSession maintenance = new QSession().withUser(new QUser().withIdReference("data-analysis-scheduler"))
-         .withPermissions("data_analysis.saved.read", "data_analysis.saved.edit")
-         .withSecurityKeyValue(DataAnalysisPermissions.ADMIN, true);
-      if(QContext.getQSession().getBackendVariants() != null)
+      QSession maintenance = AnalysisSessions.maintenance(config, () ->
       {
-         maintenance.setBackendVariants(new java.util.HashMap<>(QContext.getQSession().getBackendVariants()));
-      }
+         QSession legacy = new QSession().withUser(new QUser().withIdReference("data-analysis-scheduler"))
+            .withPermissions("data_analysis.saved.read", "data_analysis.saved.edit")
+            .withSecurityKeyValue(DataAnalysisPermissions.ADMIN, true);
+         if(QContext.getQSession().getBackendVariants() != null)
+         {
+            legacy.setBackendVariants(new java.util.HashMap<>(QContext.getQSession().getBackendVariants()));
+         }
+         return (legacy);
+      });
       int[] count = {0};
       QContext.withTemporaryContext(new CapturedContext(QContext.getQInstance(), maintenance), () ->
       {
@@ -161,9 +164,7 @@ public class ScheduleRunner
       QSession session;
       try
       {
-         session = config.getOwnerSessionSupplier() == null
-            ? new QAuthenticationModuleDispatcher().getQModule(QContext.getQInstance().getAuthentication()).createAutomatedSessionForUser(QContext.getQInstance(), id)
-            : config.getOwnerSessionSupplier().apply(id);
+         session = AnalysisSessions.forUser(config, id);
       }
       catch(Exception e)
       {

src/main/java/com/kingsrook/qbits/dataanalysis/watch/WatchEvaluator.java

@@ -49,7 +49,6 @@ import com.kingsrook.qqq.backend.core.model.actions.tables.update.UpdateInput;
 import com.kingsrook.qqq.backend.core.model.data.QRecord;
 import com.kingsrook.qqq.backend.core.model.session.QSession;
 import com.kingsrook.qqq.backend.core.model.session.QUser;
-import com.kingsrook.qqq.backend.core.modules.authentication.QAuthenticationModuleDispatcher;
 
 /*******************************************************************************
  ** Transition watches through the core alerts SPI, computing exclusively as owner.
@@ -94,13 +93,17 @@ public class WatchEvaluator
     *******************************************************************************/
    public synchronized Integer evaluateEnabled(Instant now) throws QException
    {
-      QSession maintenance = new QSession().withUser(new QUser().withIdReference("data-analysis-scheduler"))
-         .withPermissions("data_analysis.watch.read", "data_analysis.watch.edit")
-         .withSecurityKeyValue(DataAnalysisPermissions.ADMIN, true);
-      if(QContext.getQSession().getBackendVariants() != null)
+      QSession maintenance = com.kingsrook.qbits.dataanalysis.schedule.AnalysisSessions.maintenance(config, () ->
       {
-         maintenance.setBackendVariants(new java.util.HashMap<>(QContext.getQSession().getBackendVariants()));
-      }
+         QSession legacy = new QSession().withUser(new QUser().withIdReference("data-analysis-scheduler"))
+            .withPermissions("data_analysis.watch.read", "data_analysis.watch.edit")
+            .withSecurityKeyValue(DataAnalysisPermissions.ADMIN, true);
+         if(QContext.getQSession().getBackendVariants() != null)
+         {
+            legacy.setBackendVariants(new java.util.HashMap<>(QContext.getQSession().getBackendVariants()));
+         }
+         return (legacy);
+      });
       int[] count = {0};
       QContext.withTemporaryContext(new CapturedContext(QContext.getQInstance(), maintenance), () ->
       {
@@ -128,9 +131,7 @@ public class WatchEvaluator
       QSession session;
       try
       {
-         session = config.getOwnerSessionSupplier() == null
-            ? new QAuthenticationModuleDispatcher().getQModule(QContext.getQInstance().getAuthentication()).createAutomatedSessionForUser(QContext.getQInstance(), owner)
-            : config.getOwnerSessionSupplier().apply(owner);
+         session = com.kingsrook.qbits.dataanalysis.schedule.AnalysisSessions.forUser(config, owner);
       }
       catch(Exception e)
       {

src/main/resources/help/qbit-data-analysis.yaml

@@ -1,5 +1,5 @@
 bundle: qbit-data-analysis
-version: 0.1.0-SNAPSHOT
+version: ${project.version}
 layer: QBIT
 entries:
 - key: widget:data_analysis_saved_to_data_analysis_saved_star;slot:label

src/main/resources/qbit-data-analysis.properties

@@ -0,0 +1 @@
+version=${project.version}

src/test/java/com/kingsrook/qbits/dataanalysis/DataAnalysisApiTest.java

@@ -136,6 +136,13 @@ class DataAnalysisApiTest extends EngineFixture
       }
       var response = invoker.invoke(request);
       assertThat(response.getStatus()).as(response.getBody()).isEqualTo(status);
+      if(status >= 400)
+      {
+         for(String field : List.of("error", "code", "message", "traceId"))
+         {
+            assertThat(response.getJson().path(field).asText()).as(field).isNotBlank();
+         }
+      }
       return (response.getJson());
    }
 
@@ -282,7 +289,7 @@ class DataAnalysisApiTest extends EngineFixture
    }
 
    /*******************************************************************************
-    ** Generated fragment is committed verbatim and has all fourteen operations.
+    ** Generated fragment matches the committed contract and validates all references.
     *******************************************************************************/
    @Test
    void contract() throws Exception
@@ -296,8 +303,9 @@ class DataAnalysisApiTest extends EngineFixture
          Files.createDirectories(path.getParent());
          Files.writeString(path, yaml);
       }
-      assertThat(Files.exists(path)).as("Regenerate with ./mvnw -o test -Dtest=DataAnalysisApiTest#contract -Dopenapi.write=true -Dqqq.snapshot.version=4.1.0-DATAANALYSIS-SNAPSHOT").isTrue();
+      assertThat(Files.exists(path)).as("Regenerate with ./mvnw -o test -Dtest=DataAnalysisApiTest#contract -Dopenapi.write=true -Dqqq.snapshot.version=4.1.99-SNAPSHOT").isTrue();
       assertThat(Files.readString(path).replace("\r\n", "\n")).as("OpenAPI changed: regenerate with -Dopenapi.write=true").isEqualTo(yaml.replace("\r\n", "\n"));
+      assertThat(UiApiContract.check(yaml, Files.readString(path), null, 1, "-Dopenapi.write=true")).isEmpty();
    }
    @Test
    void pivotHttp() throws Exception
@@ -364,7 +372,7 @@ class DataAnalysisApiTest extends EngineFixture
       }
       relationshipCountDrills(call(HttpMethod.POST, "/tables/{table}/crosstab", Map.of("rowField", "status", "columnField", "customer"), 200));
       // All new schemas are discoverable from the same served OpenAPI catalog.
-      assertThat(com.kingsrook.qbits.dataanalysis.api.DataAnalysisApi.extension().getSemanticVersion()).isEqualTo("1.4.0");
+      assertThat(com.kingsrook.qbits.dataanalysis.api.DataAnalysisApi.extension().getSemanticVersion()).isEqualTo("1.5.0");
    }
 
    /*******************************************************************************

src/test/java/com/kingsrook/qbits/dataanalysis/DataAnalysisHomeTest.java

@@ -25,6 +25,9 @@ import java.time.temporal.ChronoUnit;
 import java.util.List;
 import com.kingsrook.qbits.dataanalysis.app.DataAnalysisHome;
 import com.kingsrook.qbits.dataanalysis.model.DataAnalysisTables;
+import com.kingsrook.qbits.dataanalysis.permissions.DataAnalysisPermissions;
+import com.kingsrook.qqq.backend.core.actions.permissions.PermissionsHelper;
+import com.kingsrook.qqq.backend.core.model.actions.AbstractActionInput;
 import com.kingsrook.qqq.backend.core.context.QContext;
 import com.kingsrook.qqq.backend.core.model.actions.widgets.RenderWidgetInput;
 import com.kingsrook.qqq.backend.core.model.dashboard.widgets.MultiStatisticsData;
@@ -69,12 +72,43 @@ class DataAnalysisHomeTest
          }
       }
       QContext.init(instance, TestSupport.user("alice"));
-      assertThat(DataAnalysisHome.statistics(Instant.now()).getStatisticsGroupData()).allSatisfy(g ->
+      assertThat(DataAnalysisHome.statistics(Instant.now()).getStatisticsGroupData()).isEmpty();
+      assertThat(((TableData) DataAnalysisHome.render(DataAnalysisHome.FIRING, Instant.now())).getNoRowsFoundHTML()).doesNotContain("Unavailable");
+   }
+
+   @Test
+   void setupIsOffTheBusinessHomeAndAdminOnly() throws Exception
+   {
+      var instance = TestSupport.instance();
+      assertThat(DataAnalysisHome.homeWidgetNames()).doesNotContain(DataAnalysisHome.SETUP).containsExactly(DataAnalysisHome.HOME_WIDGET,
+         DataAnalysisHome.STARRED, DataAnalysisHome.FIRING, DataAnalysisHome.RECENT);
+      assertThat(instance.getApp("dataAnalysis").getWidgets()).doesNotContain(DataAnalysisHome.SETUP);
+      assertThat(DataAnalysisQBitProducer.SYSTEM_WIDGETS).containsExactly(DataAnalysisHome.SETUP);
+      assertThat(instance.getWidgets()).containsKey(DataAnalysisHome.SETUP);
+
+      QContext.init(instance, TestSupport.admin());
+      assertThat(PermissionsHelper.hasWidgetPermission(new AbstractActionInput(), DataAnalysisHome.SETUP)).isTrue();
+      assertThat(DataAnalysisHome.setup().getRows()).hasSize(5);
+      assertThat(new DataAnalysisHome().render(new RenderWidgetInput().withWidgetMetaData(instance.getWidget(DataAnalysisHome.SETUP))).getWidgetData()).isInstanceOf(TableData.class);
+
+      QContext.init(instance, TestSupport.user("alice").withPermissions(DataAnalysisPermissions.SAVED_READ));
+      assertThat(PermissionsHelper.hasWidgetPermission(new AbstractActionInput(), DataAnalysisHome.SETUP)).isFalse();
+   }
+
+   @Test
+   void savedReadOnlyUserGetsNoLockedShells() throws Exception
+   {
+      var instance = TestSupport.instance();
+      QContext.init(instance, TestSupport.user("alice").withPermissions(DataAnalysisPermissions.SAVED_READ));
+      List<String> visible = DataAnalysisHome.homeWidgetNames().stream().filter(name -> PermissionsHelper.hasWidgetPermission(new AbstractActionInput(), name)).toList();
+      assertThat(visible).containsExactly(DataAnalysisHome.HOME_WIDGET, DataAnalysisHome.STARRED);
+      for(String name : visible)
       {
-         assertThat(g.getStatisticList()).isEmpty();
-         assertThat(g.getSubheader()).contains("Unavailable");
-      });
-      assertThat(((TableData) DataAnalysisHome.render(DataAnalysisHome.FIRING, Instant.now())).getNoRowsFoundHTML()).contains("Unavailable");
+         var data = DataAnalysisHome.render(name, Instant.now());
+         assertThat(com.kingsrook.qqq.backend.core.utils.JsonUtils.toJson(data)).doesNotContain("Unavailable").doesNotContain("permission required");
+      }
+      var groups = DataAnalysisHome.statistics(Instant.now()).getStatisticsGroupData();
+      assertThat(groups).extracting(g -> g.getHeader()).containsExactly("Saved analyses");
    }
 
    @Test

src/test/java/com/kingsrook/qbits/dataanalysis/DataAnalysisMetadataTest.java

@@ -116,11 +116,15 @@ class DataAnalysisMetadataTest
       assertThat(producer.isEnabled()).isTrue();
       assertThat(producer.getNamespace()).isEqualTo("analysis");
       assertThat(producer.getQBitConfig()).isSameAs(config);
-      assertThat(producer.getQBitMetaData().getVersion()).isEqualTo("0.1.0");
+      String artifactVersion = System.getProperty("qbit.artifactVersion");
+      assertThat(artifactVersion).isNotBlank();
+      assertThat(producer.getQBitMetaData().getVersion()).isEqualTo(artifactVersion).isEqualTo(DataAnalysisQBitProducer.VERSION);
       assertThat(producer.getQBitMetaData().getGroupId()).isEqualTo("com.kingsrook.qbits");
       assertThat(producer.getQBitMetaData().getArtifactId()).isEqualTo("qbit-data-analysis");
       assertThat(producer.getPackageNameForFindingMetaDataProducers()).endsWith(".metadata");
       producer.produce(instance);
+      assertThat(HelpBundles.of(instance).getBundles().getFirst().getVersion())
+         .isEqualTo(artifactVersion).isEqualTo(producer.getQBitMetaData().getVersion());
       assertThat(HelpBundles.of(instance).getBundles().getFirst().getEntries()).anyMatch(entry -> entry.getKey().equals("app:customAnalysis;slot:help"))
          .noneMatch(entry -> entry.getKey().equals("app:dataAnalysis;slot:help"));
       assertThat(instance.getApp("customAnalysis").getParentAppName()).isEqualTo("admin");

src/test/java/com/kingsrook/qbits/dataanalysis/SchedulesTest.java

@@ -26,6 +26,7 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import com.kingsrook.qbits.dataanalysis.model.DataAnalysisTables;
+import com.kingsrook.qbits.dataanalysis.permissions.DataAnalysisPermissions;
 import com.kingsrook.qbits.dataanalysis.processes.ScheduleActions;
 import com.kingsrook.qbits.dataanalysis.saved.AnalysisExport;
 import com.kingsrook.qbits.dataanalysis.saved.SavedDefinition;
@@ -47,6 +48,8 @@ import com.kingsrook.qqq.backend.core.model.metadata.messaging.QMessagingProvide
 import com.kingsrook.qqq.backend.core.model.session.QSession;
 import com.kingsrook.qqq.backend.core.modules.messaging.MessagingProviderInterface;
 import com.kingsrook.qqq.backend.core.modules.messaging.QMessagingProviderDispatcher;
+import com.kingsrook.qqq.backend.core.serviceidentity.QServicePrincipalMetaData;
+import com.kingsrook.qqq.backend.core.serviceidentity.ServiceIdentitiesMetaData;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import static org.assertj.core.api.Assertions.assertThat;
@@ -160,6 +163,27 @@ class SchedulesTest extends EngineFixture
       assertThat(WatchesTest.Sink.raised).isEmpty();
    }
 
+   /*******************************************************************************
+    ** With the host's data-analysis principal declared, schedule inventory runs
+    ** as the principal (its grants decide - a principal without them finds
+    ** nothing due), never as a self-made session.
+    *******************************************************************************/
+   @Test
+   void inventoryRunsAsTheDeclaredPrincipal() throws Exception
+   {
+      schedule("PIVOT", Map.of("rows", List.of(Map.of("field", "status")), "values", List.of(Map.of("operator", "COUNT"))), "CSV");
+      config.withServicePrincipal("analysis-bare");
+      ServiceIdentitiesMetaData.declare(instance, new QServicePrincipalMetaData().withName("analysis-bare"));
+      assertThatThrownBy(() -> runner.runDue(NOW)).isInstanceOf(QException.class);
+      assertThat(Mail.sent).isEmpty();
+
+      ServiceIdentitiesMetaData.declare(instance, new QServicePrincipalMetaData().withName("data-analysis")
+         .withLocalPermissions("data_analysis.saved.read", "data_analysis.saved.edit").withLocalSecurityKeyValue(DataAnalysisPermissions.ADMIN, true));
+      config.withServicePrincipal("data-analysis");
+      assertThat(runner.runDue(NOW)).isEqualTo(1);
+      assertThat(Mail.sent).hasSize(2);
+   }
+
    @Test
    void providerFailureAndMissingOwnerRaiseVisibleAlerts() throws Exception
    {