diff options
Diffstat (limited to 'qpid/java/common/src/main/java/org/apache/qpid/framing/AMQDataBlock.java')
-rw-r--r-- | qpid/java/common/src/main/java/org/apache/qpid/framing/AMQDataBlock.java | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/qpid/java/common/src/main/java/org/apache/qpid/framing/AMQDataBlock.java b/qpid/java/common/src/main/java/org/apache/qpid/framing/AMQDataBlock.java new file mode 100644 index 0000000000..a2fc3a03ef --- /dev/null +++ b/qpid/java/common/src/main/java/org/apache/qpid/framing/AMQDataBlock.java @@ -0,0 +1,63 @@ +/* + * + * 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.framing; + +import org.apache.mina.common.ByteBuffer; + +/** + * A data block represents something that has a size in bytes and the ability to write itself to a byte + * buffer (similar to a byte array). + */ +public abstract class AMQDataBlock implements EncodableAMQDataBlock +{ + /** + * Get the size of buffer needed to store the byte representation of this + * frame. + * @return unsigned integer + */ + public abstract long getSize(); + + /** + * Writes the datablock to the specified buffer. + * @param buffer + */ + public abstract void writePayload(ByteBuffer buffer); + + public ByteBuffer toByteBuffer() + { + final ByteBuffer buffer = ByteBuffer.allocate((int)getSize()); + + writePayload(buffer); + buffer.flip(); + return buffer; + } + + public java.nio.ByteBuffer toNioByteBuffer() + { + final java.nio.ByteBuffer buffer = java.nio.ByteBuffer.allocate((int) getSize()); + + ByteBuffer buf = ByteBuffer.wrap(buffer); + writePayload(buf); + buffer.flip(); + return buffer; + } + +} |