Examples with AbstractMapWritable org.apache.hadoop.io.AbstractMapWritable used on opensource projects

Example 1 with AbstractMapWritable

use of org.apache.hadoop.io.AbstractMapWritable in project mongo-hadoop by mongodb.

the class BSONWritable method toBSON.

/**
     * Unwrap a (usually Writable) Object, getting back a value suitable for
     * putting into a BSONObject. If the given object is not Writable, then
     * simply return the Object back.
     *
     * @param x the Object to turn into BSON.
     * @return the BSON representation of the Object.
     */
@SuppressWarnings("unchecked")
public static Object toBSON(final Object x) {
    if (x == null) {
        return null;
    }
    if (x instanceof Text) {
        return x.toString();
    }
    if (x instanceof BSONWritable) {
        return ((BSONWritable) x).getDoc();
    }
    if (x instanceof Writable) {
        if (x instanceof AbstractMapWritable) {
            if (!(x instanceof Map)) {
                throw new IllegalArgumentException(String.format("Cannot turn %s into BSON, since it does " + "not implement java.util.Map.", x.getClass().getName()));
            }
            Map<Writable, Writable> map = (Map<Writable, Writable>) x;
            BasicBSONObject bson = new BasicBSONObject();
            for (Map.Entry<Writable, Writable> entry : map.entrySet()) {
                bson.put(entry.getKey().toString(), toBSON(entry.getValue()));
            }
            return bson;
        }
        if (x instanceof ArrayWritable) {
            Writable[] o = ((ArrayWritable) x).get();
            Object[] a = new Object[o.length];
            for (int i = 0; i < o.length; i++) {
                a[i] = toBSON(o[i]);
            }
            return a;
        }
        if (x instanceof NullWritable) {
            return null;
        }
        if (x instanceof BooleanWritable) {
            return ((BooleanWritable) x).get();
        }
        if (x instanceof BytesWritable) {
            return ((BytesWritable) x).getBytes();
        }
        if (x instanceof ByteWritable) {
            return ((ByteWritable) x).get();
        }
        if (x instanceof DoubleWritable) {
            return ((DoubleWritable) x).get();
        }
        if (x instanceof FloatWritable) {
            return ((FloatWritable) x).get();
        }
        if (x instanceof LongWritable) {
            return ((LongWritable) x).get();
        }
        if (x instanceof IntWritable) {
            return ((IntWritable) x).get();
        }
    // TODO - Support counters
    }
    return x;
}