1 files changed, 135 insertions, 0 deletions
diff --git a/base/src/main/java/bjc/utils/components/ComponentDescription.java b/base/src/main/java/bjc/utils/components/ComponentDescription.java
new file mode 100644
index 0000000..28f81d1
--- /dev/null
+++ b/base/src/main/java/bjc/utils/components/ComponentDescription.java
@@ -0,0 +1,135 @@
+package bjc.utils.components;
+
+/**
+ * Generic implementation of a description for a component
+ *
+ * @author ben
+ *
+ */
+public class ComponentDescription implements IDescribedComponent {
+	private static void sanityCheckArgs(final String name, final String author, final String description,
+			final int version) {
+		if (name == null)
+			throw new NullPointerException("Component name can't be null");
+		else if (version <= 0) throw new IllegalArgumentException("Component version must be greater than 0");
+	}
+
+	/**
+	 * The author of the component
+	 */
+	private final String	author;
+	/**
+	 * The description of the component
+	 */
+	private final String	description;
+	/**
+	 * The name of the component
+	 */
+	private final String	name;
+
+	/**
+	 * The version of the component
+	 */
+	private final int version;
+
+	/**
+	 * Create a new component description
+	 *
+	 * @param name
+	 *                The name of the component
+	 * @param author
+	 *                The author of the component
+	 * @param description
+	 *                The description of the component
+	 * @param version
+	 *                The version of the component
+	 * @throws IllegalArgumentException
+	 *                 thrown if version is less than 1
+	 */
+	public ComponentDescription(final String name, final String author, final String description,
+			final int version) {
+		sanityCheckArgs(name, author, description, version);
+
+		this.name = name;
+		this.author = author;
+		this.description = description;
+		this.version = version;
+	}
+
+	@Override
+	public String getAuthor() {
+		if (author == null) return IDescribedComponent.super.getAuthor();
+
+		return author;
+	}
+
+	@Override
+	public String getDescription() {
+		if (description == null) return IDescribedComponent.super.getDescription();
+
+		return description;
+	}
+
+	@Override
+	public String getName() {
+		return name;
+	}
+
+	@Override
+	public int getVersion() {
+		return version;
+	}
+
+	@Override
+	public String toString() {
+		return name + " component v" + version + ", written by " + author;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 *
+	 * @see java.lang.Object#hashCode()
+	 */
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+
+		result = prime * result + (author == null ? 0 : author.hashCode());
+		result = prime * result + (description == null ? 0 : description.hashCode());
+		result = prime * result + (name == null ? 0 : name.hashCode());
+		result = prime * result + version;
+
+		return result;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 *
+	 * @see java.lang.Object#equals(java.lang.Object)
+	 */
+	@Override
+	public boolean equals(final Object obj) {
+		if (this == obj) return true;
+		if (obj == null) return false;
+		if (getClass() != obj.getClass()) return false;
+
+		final ComponentDescription other = (ComponentDescription) obj;
+
+		if (author == null) {
+			if (other.author != null) return false;
+		} else if (!author.equals(other.author)) return false;
+
+		if (description == null) {
+			if (other.description != null) return false;
+		} else if (!description.equals(other.description)) return false;
+
+		if (name == null) {
+			if (other.name != null) return false;
+		} else if (!name.equals(other.name)) return false;
+
+		if (version != other.version) return false;
+
+		return true;
+	}
+}