dbeaver#18437 Support of InterSystems IRIS VIEW definition

To implement getViewDDL I added a plugin for InterSystems IRIS

features/org.jkiss.dbeaver.db.feature/feature.xml

@@ -38,6 +38,7 @@
    <plugin id="org.jkiss.dbeaver.ext.hive" version="0.0.0" />
    <plugin id="org.jkiss.dbeaver.ext.hsqldb" version="0.0.0" />
    <plugin id="org.jkiss.dbeaver.ext.informix" version="0.0.0" />
+   <plugin id="org.jkiss.dbeaver.ext.intersystems" version="0.0.0" />
    <plugin id="org.jkiss.dbeaver.ext.kognitio" version="0.0.0" />
    <plugin id="org.jkiss.dbeaver.ext.netezza" version="0.0.0" />
    <plugin id="org.jkiss.dbeaver.ext.oceanbase" version="0.0.0" />

plugins/org.jkiss.dbeaver.ext.intersystems/META-INF/MANIFEST.MF

@@ -0,0 +1,15 @@
+Manifest-Version: 1.0
+Bundle-ManifestVersion: 2
+Bundle-Name: DBeaver InterSystems Support
+Bundle-SymbolicName: org.jkiss.dbeaver.ext.intersystems;singleton:=true
+Bundle-Version: 1.0.0.qualifier
+Bundle-Release-Date: 20240520
+Require-Bundle: org.jkiss.dbeaver.model,
+ org.jkiss.dbeaver.ext.generic
+Bundle-ActivationPolicy: lazy
+Bundle-RequiredExecutionEnvironment: JavaSE-17
+Bundle-Vendor: DBeaver Corp
+Bundle-ClassPath: .
+Automatic-Module-Name: org.jkiss.dbeaver.ext.intersystems
+Export-Package: org.jkiss.dbeaver.ext.intersystems.model
+Import-Package: org.jkiss.dbeaver.model.sql.format

plugins/org.jkiss.dbeaver.ext.intersystems/build.properties

@@ -0,0 +1,5 @@
+source.. = src/
+output.. = target/classes/
+bin.includes = .,\
+               META-INF/,\
+               plugin.xml

plugins/org.jkiss.dbeaver.ext.intersystems/plugin.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<?eclipse version="3.2"?>
+
+<plugin>
+
+    <extension point="org.jkiss.dbeaver.generic.meta">
+        <meta id="intersystems" class="org.jkiss.dbeaver.ext.intersystems.model.InterSystemsMetaModel" driverClass="com.intersystems.jdbc.IRISDriver"/>
+    </extension>
+
+</plugin>

plugins/org.jkiss.dbeaver.ext.intersystems/pom.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <groupId>org.jkiss.dbeaver</groupId>
+    <artifactId>plugins</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+     <relativePath>../</relativePath>
+  </parent>
+  <artifactId>org.jkiss.dbeaver.ext.intersystems</artifactId>
+  <packaging>eclipse-plugin</packaging>
+  <dependencies>
+    <dependency>
+      <groupId>org.jkiss.dbeaver</groupId>
+      <artifactId>org.jkiss.dbeaver.model</artifactId>
+      <version>1.1.24-SNAPSHOT</version>
+      <scope>compile</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.jkiss.dbeaver</groupId>
+      <artifactId>org.jkiss.dbeaver.ext.generic</artifactId>
+      <version>2.3.217-SNAPSHOT</version>
+      <scope>compile</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.jkiss.dbeaver</groupId>
+      <artifactId>org.jkiss.dbeaver.model.jdbc</artifactId>
+      <version>1.0.24-SNAPSHOT</version>
+      <scope>compile</scope>
+    </dependency>
+    <dependency>
+    	<groupId>org.jkiss.dbeaver</groupId>
+    	<artifactId>org.jkiss.dbeaver.model.sql</artifactId>
+    	<version>1.0.121-SNAPSHOT</version>
+    </dependency>
+  </dependencies>
+</project>

plugins/org.jkiss.dbeaver.ext.intersystems/src/org/jkiss/dbeaver/ext/intersystems/model/InterSystemsMetaModel.java

@@ -0,0 +1,66 @@
+/*
+ * DBeaver - Universal Database Manager
+ * Copyright (C) 2010-2024 DBeaver Corp and others
+ *
+ * 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
+ *
+ *     http://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 org.jkiss.dbeaver.ext.intersystems.model;
+
+import java.util.Map;
+
+import org.jkiss.code.NotNull;
+import org.jkiss.dbeaver.DBException;
+import org.jkiss.dbeaver.Log;
+import org.jkiss.dbeaver.ext.generic.model.GenericView;
+import org.jkiss.dbeaver.ext.generic.model.meta.GenericMetaModel;
+import org.jkiss.dbeaver.model.DBPEvaluationContext;
+import org.jkiss.dbeaver.model.DBUtils;
+import org.jkiss.dbeaver.model.exec.jdbc.JDBCPreparedStatement;
+import org.jkiss.dbeaver.model.exec.jdbc.JDBCResultSet;
+import org.jkiss.dbeaver.model.exec.jdbc.JDBCSession;
+import org.jkiss.dbeaver.model.runtime.DBRProgressMonitor;
+import org.jkiss.dbeaver.model.sql.format.SQLFormatUtils;
+
+public class InterSystemsMetaModel extends GenericMetaModel
+{
+    private static final Log log = Log.getLog(InterSystemsMetaModel.class);
+
+    public InterSystemsMetaModel() {
+        super();
+    }
+
+    public String getViewDDL(
+            @NotNull DBRProgressMonitor monitor,
+            @NotNull GenericView view,
+            @NotNull Map<String, Object> options) throws DBException {
+        String sqlStatement = "SELECT View_Definition "
+                + " FROM INFORMATION_SCHEMA.VIEWS "
+                + "where TABLE_NAME=? and TABLE_SCHEMA=? ";
+        try (JDBCSession session = DBUtils.openMetaSession(monitor, view, "Load source code")) {
+            try (JDBCPreparedStatement dbStat = session.prepareStatement(sqlStatement)) {
+                dbStat.setString(1, view.getName());
+                dbStat.setString(2, view.getContainer().getSchema().getName());
+                log.debug("Searching for view '%s' in schema '%s' ".formatted(view.getName(), view.getContainer().getSchema().getName()));
+                try (JDBCResultSet dbResult = dbStat.executeQuery()) {
+                    if (dbResult.nextRow()) {
+                         String viewplain = dbResult.getString(1);
+                         return SQLFormatUtils.formatSQL(view.getDataSource(), viewplain);
+                    }
+                }
+            }
+        } catch (Exception e) {
+            throw new DBException("Can't read source code of '" + view.getFullyQualifiedName(DBPEvaluationContext.DDL) + "'", e);
+        }
+        return super.getViewDDL(monitor, view, options);
+    }
+}

plugins/pom.xml

@@ -53,6 +53,7 @@
         <module>org.jkiss.dbeaver.ext.hive</module>
         <module>org.jkiss.dbeaver.ext.hsqldb</module>
         <module>org.jkiss.dbeaver.ext.informix</module>
+        <module>org.jkiss.dbeaver.ext.intersystems</module>
         <module>org.jkiss.dbeaver.ext.mssql</module>
         <module>org.jkiss.dbeaver.ext.mysql</module>
         <module>org.jkiss.dbeaver.ext.netezza</module>