Parser for structured metadata.

briar-api/src/org/briarproject/api/data/BdfDictionary.java

@@ -0,0 +1,48 @@
+package org.briarproject.api.data;
+
+import java.util.Hashtable;
+
+public class BdfDictionary extends Hashtable<String, Object> {
+
+	public Boolean getBoolean(String key, Boolean defaultValue) {
+		Object o = get(key);
+		if (o instanceof Boolean) return (Boolean) o;
+		return defaultValue;
+	}
+
+	public Long getInteger(String key, Long defaultValue) {
+		Object o = get(key);
+		if (o instanceof Long) return (Long) o;
+		return defaultValue;
+	}
+
+	public Double getFloat(String key, Double defaultValue) {
+		Object o = get(key);
+		if (o instanceof Double) return (Double) o;
+		return defaultValue;
+	}
+
+	public String getString(String key, String defaultValue) {
+		Object o = get(key);
+		if (o instanceof String) return (String) o;
+		return defaultValue;
+	}
+
+	public byte[] getRaw(String key, byte[] defaultValue) {
+		Object o = get(key);
+		if (o instanceof byte[]) return (byte[]) o;
+		return defaultValue;
+	}
+
+	public BdfList getList(String key, BdfList defaultValue) {
+		Object o = get(key);
+		if (o instanceof BdfList) return (BdfList) o;
+		return defaultValue;
+	}
+
+	public BdfDictionary getDictionary(String key, BdfDictionary defaultValue) {
+		Object o = get(key);
+		if (o instanceof BdfDictionary) return (BdfDictionary) o;
+		return defaultValue;
+	}
+}

briar-api/src/org/briarproject/api/data/BdfList.java

@@ -0,0 +1,48 @@
+package org.briarproject.api.data;
+
+import java.util.Vector;
+
+public class BdfList extends Vector<Object> {
+
+	public Boolean getBoolean(int index, Boolean defaultValue) {
+		Object o = get(index);
+		if (o instanceof Boolean) return (Boolean) o;
+		return defaultValue;
+	}
+
+	public Long getInteger(int index, Long defaultValue) {
+		Object o = get(index);
+		if (o instanceof Long) return (Long) o;
+		return defaultValue;
+	}
+
+	public Double getFloat(int index, Double defaultValue) {
+		Object o = get(index);
+		if (o instanceof Double) return (Double) o;
+		return defaultValue;
+	}
+
+	public String getString(int index, String defaultValue) {
+		Object o = get(index);
+		if (o instanceof String) return (String) o;
+		return defaultValue;
+	}
+
+	public byte[] getRaw(int index, byte[] defaultValue) {
+		Object o = get(index);
+		if (o instanceof byte[]) return (byte[]) o;
+		return defaultValue;
+	}
+
+	public BdfList getList(int index, BdfList defaultValue) {
+		Object o = get(index);
+		if (o instanceof BdfList) return (BdfList) o;
+		return defaultValue;
+	}
+
+	public BdfDictionary getDictionary(int index, BdfDictionary defaultValue) {
+		Object o = get(index);
+		if (o instanceof BdfDictionary) return (BdfDictionary) o;
+		return defaultValue;
+	}
+}

briar-api/src/org/briarproject/api/data/MetadataParser.java

@@ -0,0 +1,9 @@
+package org.briarproject.api.data;
+
+import org.briarproject.api.FormatException;
+import org.briarproject.api.db.Metadata;
+
+public interface MetadataParser {
+
+	BdfDictionary parse(Metadata m) throws FormatException;
+}

briar-api/src/org/briarproject/api/db/Metadata.java

@@ -0,0 +1,6 @@
+package org.briarproject.api.db;
+
+import java.util.Hashtable;
+
+public class Metadata extends Hashtable<String, byte[]> {
+}