davsclaus commented on code in PR #28675:
URL: https://github.com/apache/camel/pull/28675#discussion_r4421159920
##########
docs/user-manual/modules/ROOT/pages/camel-jbang-projects.adoc:
##########
@@ -178,6 +178,39 @@ TIP: Export logs are stored in `~/.camel/camel-export.log`
by default.
Export loads configuration from `application.properties`, where you can set
runtime, Java version, and other parameters.
See xref:camel-jbang-configuration.adoc[Configuration] for all `camel.jbang.*`
options.
+=== Exporting from Java
+
+*Since Camel 4.24 (preview)*
+
+Tools that create Camel projects, such as an IDE or a visual designer, can
export from Java instead of running the `camel` command.
+The `camel-jbang-export` module has the same options as `camel export`, as
public fields of an `ExportRequest`:
+
+[source,java]
+----
+ExportRequest request = new ExportRequest();
+request.files.add("hello.camel.yaml");
+request.runtime = RuntimeType.main; // or springBoot, quarkus
+request.exportDir = "target/hello";
+
+int exit = new ProjectExporter().export(request);
+----
Review Comment:
Done in e86d19e0e6a1: the sentence before the first example now says that
camel-jbang-core must be on the classpath as well, and points to the
explanation below.
_Claude Code on behalf of davsclaus_
##########
dsl/camel-jbang/camel-jbang-export/src/main/java/org/apache/camel/dsl/jbang/export/ExportContext.java:
##########
@@ -0,0 +1,104 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.camel.dsl.jbang.export;
+
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.List;
+import java.util.ServiceLoader;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+import org.apache.camel.dsl.jbang.export.common.PluginExporter;
+import org.apache.camel.dsl.jbang.export.common.Printer;
+
+/**
+ * What an export uses from its caller: where it prints, how it resolves the
dependencies, the exporters of the active
+ * plugins, and how it asks for confirmation (such as before it deletes the
files of the export directory).
+ */
+public class ExportContext {
+
+ private Printer printer = new Printer.SystemOutPrinter();
+ private DependencyResolver dependencyResolver;
+ private Function<String, Collection<PluginExporter>> pluginExporters =
repos -> List.of();
+ private Predicate<String> confirm = message -> true;
+
+ public Printer getPrinter() {
+ return printer;
+ }
+
+ /**
+ * Where the export prints (default the console).
+ */
+ public ExportContext withPrinter(Printer printer) {
+ this.printer = printer;
+ return this;
+ }
+
+ /**
+ * The resolver of the dependencies; when none is set, the one registered
with the {@link ServiceLoader} is used.
+ */
+ public DependencyResolver getDependencyResolver() {
+ if (dependencyResolver == null) {
Review Comment:
Documented in e86d19e0e6a1: the class Javadoc says an ExportContext is not
thread-safe, to be configured and used for one export at a time. The rest of it
(the printer, the confirm callback) is per export anyway, so a shared context
would need more than a synchronized lazy load.
_Claude Code on behalf of davsclaus_
##########
dsl/camel-jbang/camel-jbang-export/src/main/java/org/apache/camel/dsl/jbang/export/ExportRequest.java:
##########
@@ -0,0 +1,376 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.camel.dsl.jbang.export;
+
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.camel.dsl.jbang.export.common.MavenResolver;
+import org.apache.camel.dsl.jbang.export.common.QuarkusPlatform;
+import org.apache.camel.dsl.jbang.export.common.RuntimeType;
+
+/**
+ * What to export: the Camel files and the options of the Maven project to
create, the same as the options of camel
+ * export.
+ * <p>
+ * The fields are public and mutable, as the request is filled in by the
caller and then completed by
+ * {@link ProjectExporter#prepare(ExportRequest)} with the values of
application.properties and the profile. The copy
+ * constructor is shallow: the copy shares the lists of the original.
+ */
+public class ExportRequest {
+
Review Comment:
Added `@since 4.24` to ExportRequest, ExportContext, DependencyResolver and
ProjectExporter in e86d19e0e6a1.
_Claude Code on behalf of davsclaus_
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