| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.qpid.protonj2.codec.encoders.primitives; |
| |
| import java.util.Map; |
| |
| import org.apache.qpid.protonj2.buffer.ProtonBuffer; |
| import org.apache.qpid.protonj2.codec.EncodeException; |
| import org.apache.qpid.protonj2.codec.EncoderState; |
| import org.apache.qpid.protonj2.codec.EncodingCodes; |
| import org.apache.qpid.protonj2.codec.TypeEncoder; |
| import org.apache.qpid.protonj2.codec.encoders.AbstractPrimitiveTypeEncoder; |
| |
| /** |
| * Encoder of AMQP Map type values to a byte stream. |
| */ |
| @SuppressWarnings({ "rawtypes", "unchecked" }) |
| public final class MapTypeEncoder extends AbstractPrimitiveTypeEncoder<Map> { |
| |
| @Override |
| public Class<Map> getTypeClass() { |
| return Map.class; |
| } |
| |
| @Override |
| public void writeType(ProtonBuffer buffer, EncoderState state, Map value) { |
| buffer.writeByte(EncodingCodes.MAP32); |
| writeValue(buffer, state, value); |
| } |
| |
| @Override |
| public void writeRawArray(ProtonBuffer buffer, EncoderState state, Object[] values) { |
| buffer.writeByte(EncodingCodes.MAP32); |
| for (Object value : values) { |
| writeValue(buffer, state, (Map) value); |
| } |
| } |
| |
| private void writeValue(ProtonBuffer buffer, EncoderState state, Map value) { |
| int startIndex = buffer.getWriteIndex(); |
| |
| // Reserve space for the size |
| buffer.writeInt(0); |
| |
| // Record the count of elements which include both key and value in the count. |
| buffer.writeInt(value.size() * 2); |
| |
| // Write the list elements and then compute total size written. |
| value.forEach((key, entry) -> { |
| TypeEncoder keyEncoder = state.getEncoder().getTypeEncoder(key); |
| if (keyEncoder == null) { |
| throw new EncodeException("Cannot find encoder for type " + key); |
| } |
| |
| keyEncoder.writeType(buffer, state, key); |
| |
| TypeEncoder valueEncoder = state.getEncoder().getTypeEncoder(entry); |
| if (valueEncoder == null) { |
| throw new EncodeException("Cannot find encoder for type " + entry); |
| } |
| |
| valueEncoder.writeType(buffer, state, entry); |
| }); |
| |
| // Move back and write the size |
| int endIndex = buffer.getWriteIndex(); |
| buffer.setInt(startIndex, endIndex - startIndex - 4); |
| } |
| } |