Add factory for configuration file format selection

Author: YangSiJun528

initializr-generator/src/main/java/io/spring/initializr/generator/configuration/format/ConfigurationFileFormat.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2012 - present the original author or authors.
+ *
+ * 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 io.spring.initializr.generator.configuration.format;
+
+public interface ConfigurationFileFormat {
+
+	/**
+	 * Return the id of the packaging.
+	 * @return the id
+	 */
+	String id();
+
+}

initializr-generator/src/main/java/io/spring/initializr/generator/configuration/format/ConfigurationFileFormatFactory.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2012 - present the original author or authors.
+ *
+ * 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 io.spring.initializr.generator.configuration.format;
+
+/**
+ * A factory for creating a {@link ConfigurationFileFormat}.
+ *
+ * @author Sijun Yang
+ */
+public interface ConfigurationFileFormatFactory {
+
+	/**
+	 * Creates and returns a {@link ConfigurationFileFormat} for the given id. If the
+	 * factory does not recognise the given {@code id}, {@code null} should be returned.
+	 * @param id the id of the configuration file format
+	 * @return the configuration file format or {@code null}
+	 */
+	ConfigurationFileFormat createConfigurationFileFormat(String id);
+
+}

initializr-generator/src/main/java/io/spring/initializr/generator/configuration/format/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012 - present the original author or authors.
+ *
+ * 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.
+ */
+
+/**
+ * Configuration file format abstraction.
+ */
+package io.spring.initializr.generator.configuration.format;

initializr-generator/src/main/java/io/spring/initializr/generator/configuration/format/properties/PropertiesFormat.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2012 - present the original author or authors.
+ *
+ * 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 io.spring.initializr.generator.configuration.format.properties;
+
+import io.spring.initializr.generator.configuration.format.ConfigurationFileFormat;
+
+/**
+ * Properties {@link ConfigurationFileFormat}.
+ *
+ * @author Sijun Yang
+ */
+public final class PropertiesFormat implements ConfigurationFileFormat {
+
+	/**
+	 * Properties {@link ConfigurationFileFormat} identifier.
+	 */
+	public static final String ID = "properties";
+
+	@Override
+	public String id() {
+		return ID;
+	}
+
+	@Override
+	public String toString() {
+		return id();
+	}
+
+}

initializr-generator/src/main/java/io/spring/initializr/generator/configuration/format/properties/PropertiesFormatFactory.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2012 - present the original author or authors.
+ *
+ * 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 io.spring.initializr.generator.configuration.format.properties;
+
+import io.spring.initializr.generator.configuration.format.ConfigurationFileFormat;
+import io.spring.initializr.generator.configuration.format.ConfigurationFileFormatFactory;
+
+/**
+ * {@link ConfigurationFileFormat Factory} for {@link PropertiesFormat}.
+ *
+ * @author Sijun Yang
+ */
+class PropertiesFormatFactory implements ConfigurationFileFormatFactory {
+
+	@Override
+	public ConfigurationFileFormat createConfigurationFileFormat(String id) {
+		if (PropertiesFormat.ID.equals(id)) {
+			return new PropertiesFormat();
+		}
+		return null;
+	}
+
+}

initializr-generator/src/main/java/io/spring/initializr/generator/configuration/format/properties/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012 - present the original author or authors.
+ *
+ * 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.
+ */
+
+/**
+ * Properties configuration file format.
+ */
+package io.spring.initializr.generator.configuration.format.properties;

initializr-generator/src/main/java/io/spring/initializr/generator/configuration/format/yaml/YamlFormat.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2012 - present the original author or authors.
+ *
+ * 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 io.spring.initializr.generator.configuration.format.yaml;
+
+import io.spring.initializr.generator.configuration.format.ConfigurationFileFormat;
+
+/**
+ * YAML {@link ConfigurationFileFormat}.
+ *
+ * @author Sijun Yang
+ */
+public final class YamlFormat implements ConfigurationFileFormat {
+
+	/**
+	 * YAML {@link ConfigurationFileFormat} identifier.
+	 */
+	public static final String ID = "yml";
+
+	@Override
+	public String id() {
+		return ID;
+	}
+
+	@Override
+	public String toString() {
+		return id();
+	}
+
+}

initializr-generator/src/main/java/io/spring/initializr/generator/configuration/format/yaml/YamlFormatFactory.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2012 - present the original author or authors.
+ *
+ * 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 io.spring.initializr.generator.configuration.format.yaml;
+
+import io.spring.initializr.generator.configuration.format.ConfigurationFileFormat;
+import io.spring.initializr.generator.configuration.format.ConfigurationFileFormatFactory;
+
+/**
+ * {@link ConfigurationFileFormat Factory} for {@link YamlFormat}.
+ *
+ * @author Sijun Yang
+ */
+class YamlFormatFactory implements ConfigurationFileFormatFactory {
+
+	@Override
+	public ConfigurationFileFormat createConfigurationFileFormat(String id) {
+		if (YamlFormat.ID.equals(id)) {
+			return new YamlFormat();
+		}
+		return null;
+	}
+
+}

initializr-generator/src/main/java/io/spring/initializr/generator/configuration/format/yaml/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012 - present the original author or authors.
+ *
+ * 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.
+ */
+
+/**
+ * YAML configuration file format.
+ */
+package io.spring.initializr.generator.configuration.format.yaml;

initializr-generator/src/main/resources/META-INF/spring.factories

@@ -10,3 +10,7 @@ io.spring.initializr.generator.language.kotlin.KotlinLanguageFactory
 io.spring.initializr.generator.packaging.PackagingFactory=\
 io.spring.initializr.generator.packaging.jar.JarPackagingFactory,\
 io.spring.initializr.generator.packaging.war.WarPackagingFactory
+
+io.spring.initializr.generator.configuration.format.ConfigurationFileFormatFactory=\
+io.spring.initializr.generator.configuration.format.properties.PropertiesFormatFactory,\
+io.spring.initializr.generator.configuration.format.yaml.YamlFormatFactory