Add XML property lists

Implement support for the XML property lists that are the newer version
of the ASCII ones. There are a few things that still need to be done,
but all of the basics are there

Next things
- Allow collapsing a property list into a series of objects
- Serialize both the property list and flattened objects to XML

1 files changed, 71 insertions, 0 deletions

diff --git a/projects/net.wotonomy.foundation/src/main/java/net/wotonomy/foundation/NSError.java b/projects/net.wotonomy.foundation/src/main/java/net/wotonomy/foundation/NSError.java
new file mode 100644
index 0000000..9e46b5e
--- /dev/null
+++ b/projects/net.wotonomy.foundation/src/main/java/net/wotonomy/foundation/NSError.java
@@ -0,0 +1,71 @@
+package net.wotonomy.foundation;
+
+import java.io.Serializable;
+import java.util.Objects;
+
+/**
+ * Represents an error code.
+ * 
+ * @author bjculkin
+ *
+ */
+public class NSError implements Serializable {
+	private static final long serialVersionUID = 532874201592029465L;
+
+	public static final String NSWotonomyDomain = "wotonomy";
+	public static final String NSJavaDomain = "java";
+
+	public final String domain;
+	public final int error;
+
+	public final NSDictionary<String, Object> userInfo;
+
+	private String description;
+
+	private NSArray<NSError> underlyingErrors = new NSMutableArray<>();
+	
+	@SuppressWarnings("unchecked")
+	public NSError(String domain, int error) {
+		this(domain, error, (NSDictionary<String, Object>) NSDictionary.EmptyDictionary);
+	}
+
+	public NSError(String domain, int error, NSDictionary<String, Object> userInfo) {
+		this.domain = domain;
+		this.error = error;
+		this.userInfo = userInfo;
+	}
+
+	public String getDescription() {
+		return description;
+	}
+
+	public void setDescription(String description) {
+		this.description = description;
+	}
+
+	public NSArray<NSError> getUnderlyingErrors() {
+		return underlyingErrors;
+	}
+	
+	public void addUnderlyingError(NSError underlying) {
+		underlyingErrors.add(underlying);
+	}
+	
+	@Override
+	public int hashCode() {
+		return Objects.hash(domain, error, userInfo, description);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (obj == null)
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		NSError other = (NSError) obj;
+		return Objects.equals(domain, other.domain) && error == other.error && Objects.equals(userInfo, other.userInfo)
+				&& Objects.equals(description, other.description);
+	}
+}