Refactoring to batch (#181)

The rationale of this pull request is to

* have more maintainable and granular code
* not maintain the custom made job engine
* allow the users to customize the defaults of the releaser more easy
* allow the users to create their own steps without the need to change any existing code
* allow the users to fully change the flows and tasks logic
* abstract underlying batch mechanism (Spring Batch) so it doesn't leak to production code
* allow parallelization of the release process and release tasks

releaser-spring/src/main/java/releaser/internal/options/Options.java

@@ -0,0 +1,90 @@
+/*
+ * Copyright 2013-2019 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 releaser.internal.options;
+
+import java.io.Serializable;
+import java.util.List;
+import java.util.stream.Collectors;
+
+/**
+ * @author Marcin Grzejszczak
+ */
+public class Options implements Serializable {
+
+	/**
+	 * Is meta release set.
+	 */
+	public Boolean metaRelease;
+
+	/**
+	 * Is full release set.
+	 */
+	public Boolean fullRelease;
+
+	/**
+	 * Is interactive mode set.
+	 */
+	public Boolean interactive;
+
+	/**
+	 * Is dry run set.
+	 */
+	public Boolean dryRun;
+
+	/**
+	 * List of task names to release.
+	 */
+	public List<String> taskNames;
+
+	/**
+	 * Name of the task / projects to start from.
+	 */
+	public String startFrom = "";
+
+	/**
+	 * Range of task / projects to release.
+	 */
+	public String range = "";
+
+	Options(Boolean metaRelease, Boolean fullRelease, Boolean interactive, Boolean dryRun,
+			List<String> taskNames, String startFrom, String range) {
+		this.metaRelease = metaRelease;
+		this.fullRelease = fullRelease;
+		this.interactive = interactive;
+		this.dryRun = dryRun;
+		this.taskNames = taskNames.stream().map(this::removeQuotingChars)
+				.collect(Collectors.toList());
+		this.startFrom = removeQuotingChars(startFrom);
+		this.range = removeQuotingChars(range);
+	}
+
+	private String removeQuotingChars(String string) {
+		if (string != null && string.startsWith("'") && string.endsWith("'")) {
+			return string.substring(1, string.length() - 1);
+		}
+		return string;
+	}
+
+	@Override
+	public String toString() {
+		return "Options{" + "metaRelease=" + this.metaRelease + ", fullRelease="
+				+ this.fullRelease + ", interactive=" + this.interactive + ", dryRun="
+				+ this.dryRun + ", taskNames=" + this.taskNames + ", startFrom='"
+				+ this.startFrom + '\'' + ", range='" + this.range + '\'' + '}';
+	}
+
+}