form view infrastructure, loading row from DB

packages/datalib/src/FormViewDisplay.ts

@@ -0,0 +1,23 @@
+import _ from 'lodash';
+import { GridConfig, GridCache, GridConfigColumns, createGridCache, GroupFunc } from './GridConfig';
+import { ForeignKeyInfo, TableInfo, ColumnInfo, EngineDriver, NamedObjectInfo, DatabaseInfo } from 'dbgate-types';
+import { parseFilter, getFilterType } from 'dbgate-filterparser';
+import { filterName } from './filterName';
+import { ChangeSetFieldDefinition, ChangeSetRowDefinition } from './ChangeSet';
+import { Expression, Select, treeToSql, dumpSqlSelect, Condition } from 'dbgate-sqltree';
+import { isTypeLogical } from 'dbgate-tools';
+import { ChangeCacheFunc, ChangeConfigFunc, DisplayColumn } from './GridDisplay';
+
+export class FormViewDisplay {
+  isLoadedCorrectly = true;
+  columns: DisplayColumn[];
+
+  constructor(
+    public config: GridConfig,
+    protected setConfig: ChangeConfigFunc,
+    public cache: GridCache,
+    protected setCache: ChangeCacheFunc,
+    public driver?: EngineDriver,
+    public dbinfo: DatabaseInfo = null
+  ) {}
+}

packages/datalib/src/GridConfig.ts

@@ -29,6 +29,8 @@ export interface GridConfig extends GridConfigColumns {
   grouping: { [uniqueName: string]: GroupFunc };
   childConfig?: GridConfig;
   reference?: GridReferenceDefinition;
+  isFormView?: boolean;
+  formViewKey?: { [uniqueName: string]: string };
 }
 
 export interface GridCache {

packages/datalib/src/GridDisplay.ts

@@ -518,4 +518,20 @@ export abstract class GridDisplay {
       conditions,
     };
   }
+
+  switchToFormView(rowData) {
+    if (!this.baseTable) return;
+    const { primaryKey } = this.baseTable;
+    if (!primaryKey) return;
+    const { columns } = primaryKey;
+
+    this.setConfig((cfg) => ({
+      ...cfg,
+      isFormView: true,
+      formViewKey: _.pick(
+        rowData,
+        columns.map((x) => x.columnName)
+      ),
+    }));
+  }
 }

packages/datalib/src/TableFormViewDisplay.ts

@@ -0,0 +1,62 @@
+import { FormViewDisplay } from './FormViewDisplay';
+import _ from 'lodash';
+import { GridDisplay, ChangeCacheFunc, DisplayColumn, DisplayedColumnInfo, ChangeConfigFunc } from './GridDisplay';
+import { TableInfo, EngineDriver, ViewInfo, ColumnInfo, NamedObjectInfo, DatabaseInfo } from 'dbgate-types';
+import { GridConfig, GridCache, createGridCache } from './GridConfig';
+import { Expression, Select, treeToSql, dumpSqlSelect, mergeConditions, Condition } from 'dbgate-sqltree';
+import { filterName } from './filterName';
+import { TableGridDisplay } from './TableGridDisplay';
+
+export class TableFormViewDisplay extends FormViewDisplay {
+  public table: TableInfo;
+  // use utility functions from GridDisplay and publish result in FromViewDisplat interface
+  private gridDisplay: TableGridDisplay;
+
+  constructor(
+    public tableName: NamedObjectInfo,
+    driver: EngineDriver,
+    config: GridConfig,
+    setConfig: ChangeConfigFunc,
+    cache: GridCache,
+    setCache: ChangeCacheFunc,
+    dbinfo: DatabaseInfo
+  ) {
+    super(config, setConfig, cache, setCache, driver, dbinfo);
+    this.gridDisplay = new TableGridDisplay(tableName, driver, config, setConfig, cache, setCache, dbinfo);
+
+    this.isLoadedCorrectly = this.gridDisplay.isLoadedCorrectly;
+    this.columns = this.gridDisplay.columns;
+  }
+
+  getPrimaryKeyCondition(): Condition {
+    if (!this.config.formViewKey) return null;
+    return {
+      conditionType: 'and',
+      conditions: _.keys(this.config.formViewKey).map((columnName) => ({
+        conditionType: 'binary',
+        operator: '=',
+        left: {
+          exprType: 'column',
+          columnName,
+          source: {
+            alias: 'basetbl',
+          },
+        },
+        right: {
+          exprType: 'value',
+          value: this.config.formViewKey[columnName],
+        },
+      })),
+    };
+  }
+
+  getCurrentRowQuery() {
+    if (!this.driver) return null;
+    const select = this.gridDisplay.createSelect();
+    if (!select) return null;
+    select.topRecords = 1;
+    select.where = mergeConditions(select.where, this.getPrimaryKeyCondition());
+    const sql = treeToSql(this.driver, select, dumpSqlSelect);
+    return sql;
+  }
+}

packages/datalib/src/index.ts

@@ -1,11 +1,13 @@
-export * from "./GridDisplay";
-export * from "./GridConfig";
-export * from "./TableGridDisplay";
-export * from "./ViewGridDisplay";
-export * from "./JslGridDisplay";
-export * from "./ChangeSet";
-export * from "./filterName";
-export * from "./FreeTableGridDisplay";
-export * from "./FreeTableModel";
-export * from "./MacroDefinition";
-export * from "./runMacro";
+export * from './GridDisplay';
+export * from './GridConfig';
+export * from './TableGridDisplay';
+export * from './ViewGridDisplay';
+export * from './JslGridDisplay';
+export * from './ChangeSet';
+export * from './filterName';
+export * from './FreeTableGridDisplay';
+export * from './FreeTableModel';
+export * from './MacroDefinition';
+export * from './runMacro';
+export * from './FormViewDisplay';
+export * from './TableFormViewDisplay';