/**
* Copyright 2011-2012 Adrian Stabiszewski, as@nfctools.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.nfctools.ndef.wkt;
import java.util.HashMap;
import java.util.Map;
import org.nfctools.ndef.NdefConstants;
import org.nfctools.ndef.NdefEncoderException;
import org.nfctools.ndef.NdefMessageEncoder;
import org.nfctools.ndef.NdefRecord;
import org.nfctools.ndef.Record;
import org.nfctools.ndef.wkt.encoder.RecordEncoder;
import org.nfctools.ndef.wkt.records.WellKnownRecord;
public class WellKnownRecordEncoder implements RecordEncoder {
private Map<Class<?>, WellKnownRecordConfig> knownRecordTypes = new HashMap<Class<?>, WellKnownRecordConfig>();
@Override
public boolean canEncode(Record record) {
return knownRecordTypes.containsKey(record.getClass());
}
@Override
public NdefRecord encodeRecord(Record record, NdefMessageEncoder messageEncoder) {
byte[] key = record.getId();
if(key != null) {
if(key.length > 255) {
throw new NdefEncoderException("Expected record id length <= 255 bytes", record);
}
}
WellKnownRecordConfig config = knownRecordTypes.get(record.getClass());
byte[] payload = config.getPayloadEncoder().encodePayload((WellKnownRecord)record, messageEncoder);
byte[] type = config.getRecordType().getType();
return new NdefRecord(NdefConstants.TNF_WELL_KNOWN, type, key, payload);
}
public void addRecordConfig(WellKnownRecordConfig config) {
knownRecordTypes.put(config.getRecordClass(), config);
}
}