feat(database): add GenerateFunctionAction for testing PL/SQL

Add a new class `GenerateFunctionAction` to the database module. This class is responsible for generating Java functions based on Oracle PL/SQL code. It includes methods for checking if the action is available, invoking the action, and rendering the template for generating the function. The class also includes a data class `GenFunctionContext` to hold the language and SQL code for the function.

exts/database/src/main/kotlin/cc/unitmesh/database/actions/GenerateFunctionAction.kt

@@ -0,0 +1,61 @@
+package cc.unitmesh.database.actions
+
+import cc.unitmesh.devti.gui.sendToChatWindow
+import cc.unitmesh.devti.intentions.action.base.AbstractChatIntention
+import cc.unitmesh.devti.provider.ContextPrompter
+import cc.unitmesh.devti.template.TemplateRender
+import com.intellij.openapi.diagnostic.logger
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiFile
+import com.intellij.sql.dialects.oracle.OraDialect
+
+class GenerateFunctionAction : AbstractChatIntention() {
+    override fun priority() = 901
+
+    override fun getFamilyName(): String = "Generate Java Function"
+
+    override fun getText(): String = "Generate Java Function"
+
+    val logger = logger<GenerateFunctionAction>()
+
+    override fun isAvailable(project: Project, editor: Editor?, file: PsiFile?): Boolean {
+        if (editor == null || file == null) return false
+        val isOracle = file.language is OraDialect
+        val selectedText = editor.selectionModel
+        val element = file.findElementAt(selectedText.selectionStart)
+
+        if (element != null) {
+            logger.info("element: ${element.text}")
+        }
+
+        return isOracle
+    }
+
+    override fun invoke(project: Project, editor: Editor?, file: PsiFile?) {
+        if (editor == null || file == null) return
+        val selectedText = editor.selectionModel.selectedText ?: return
+
+        val templateRender = TemplateRender("genius/migration")
+        val template = templateRender.getTemplate("gen-function.vm")
+        templateRender.context = GenFunctionContext(
+            lang = file.language.displayName ?: "",
+            sql = selectedText,
+        )
+
+        val prompter = templateRender.renderTemplate(template)
+
+        logger.info("Prompt: $prompter")
+
+        sendToChatWindow(project, getActionType()) { panel, service ->
+            service.handlePromptAndResponse(panel, object : ContextPrompter() {
+                override fun displayPrompt(): String = prompter
+                override fun requestPrompt(): String = prompter
+            }, null, false)
+        }
+    }
+
+}
+
+data class GenFunctionContext(val lang: String, val sql: String)
+

exts/database/src/main/resources/cc.unitmesh.database.xml

@@ -10,6 +10,11 @@
             <bundleName>messages.AutoDevBundle</bundleName>
             <categoryKey>intention.category.llm</categoryKey>
         </autoDevIntention>
+        <autoDevIntention>
+            <className>cc.unitmesh.database.actions.GenerateFunctionAction</className>
+            <bundleName>messages.AutoDevBundle</bundleName>
+            <categoryKey>intention.category.llm</categoryKey>
+        </autoDevIntention>
 
         <livingDocumentation
                 language="SQL"

exts/database/src/main/resources/genius/migration/gen-function.vm

@@ -0,0 +1,13 @@
+You are a professional application migration programmer.
+Based on the following Oracle PL/SQL code to Java function,
+
+— When some function is missing in Java, just skip it.
+- If you find some function is not correct, please fix it.
+- Follow the Java coding style.
+
+
+```${context.lang}
+${context.sql}
+```
+
+