public ArrayWritable(string[] strings)
: this(typeof(UTF8), new IWritable[strings.Length])
{
for (int i = 0; i < strings.Length; i++)
{
values[i] = new UTF8(strings[i]);
}
}
//end Internal subclass declaration
/*
* @see org.apache.hadoop.io.Writable#write(java.io.BinaryWriter)
*/
/// <exception cref="System.IO.IOException"/>
public virtual void Write(BinaryWriter writer)
{
// write componentType
UTF8.WriteString(writer, _componentType.FullName);
// write length
writer.Write(_length);
// do the inner loop. Walk the decision tree only once.
switch (_componentType.Name)
{
case "Boolean":
WriteBooleanArray(writer);
break;
case "Char":
WriteCharArray(writer);
break;
case "Byte":
WriteByteArray(writer);
break;
case "Int16":
WriteShortArray(writer);
break;
case "Int32":
WriteIntArray(writer);
break;
case "Int64":
WriteLongArray(writer);
break;
case "Single":
WriteFloatArray(writer);
break;
case "Double":
WriteDoubleArray(writer);
break;
default:
throw new IOException("Component type " + _componentType + " is set as the output type, but no encoding is implemented for this type.");
}
}
/*
* @see org.apache.hadoop.io.Writable#readFields(java.io.BinaryReader)
*/
/// <exception cref="System.IO.IOException"/>
public virtual void ReadFields(BinaryReader reader)
{
// read and set the component type of the array
string className = UTF8.ReadString(reader);
Type componentType = GetPrimitiveClass(className);
if (componentType == null)
{
throw new IOException("encoded array component type " + className + " is not a candidate primitive type");
}
CheckDeclaredComponentType(componentType);
this._componentType = componentType;
// read and set the length of the array
int length = reader.Read();
if (length < 0)
{
throw new IOException("encoded array length is negative " + length);
}
this._length = length;
// construct and read in the array
_value = System.Array.CreateInstance(componentType, length);
// do the inner loop. Walk the decision tree only once.
switch (componentType.Name)
{
case "Boolean":
ReadBooleanArray(reader);
break;
case "Char":
ReadCharArray(reader);
break;
case "Byte":
ReadByteArray(reader);
break;
case "Int16":
ReadShortArray(reader);
break;
case "Int32":
ReadIntArray(reader);
break;
case "Int64":
ReadLongArray(reader);
break;
case "Single":
ReadFloatArray(reader);
break;
case "Double":
ReadDoubleArray(reader);
break;
default:
throw new IOException("Encoded type " + className + " converted to valid component type "
+ componentType + " but no encoding is implemented for this type.");
}
}
