| /* |
| * |
| * 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.server.protocol.v0_10.transport; |
| |
| import org.apache.qpid.server.transport.util.Functions; |
| |
| import java.util.Arrays; |
| import java.util.Map; |
| |
| |
| /** |
| * Struct |
| * |
| * @author Rafael H. Schloming |
| */ |
| |
| public abstract class Struct implements Encodable |
| { |
| |
| public static Struct create(int type) |
| { |
| return StructFactory.create(type); |
| } |
| |
| private boolean dirty = true; |
| |
| public boolean isDirty() |
| { |
| return dirty; |
| } |
| |
| public void setDirty(boolean dirty) |
| { |
| this.dirty = dirty; |
| } |
| |
| public abstract int getStructType(); |
| |
| public abstract int getSizeWidth(); |
| |
| public abstract int getPackWidth(); |
| |
| public final int getEncodedType() |
| { |
| int type = getStructType(); |
| if (type < 0) |
| { |
| throw new UnsupportedOperationException(); |
| } |
| return type; |
| } |
| |
| private final boolean isBit(Field<?,?> f) |
| { |
| return f.getType().equals(Boolean.class); |
| } |
| |
| private final boolean packed() |
| { |
| return getPackWidth() > 0; |
| } |
| |
| private final boolean encoded(Field<?,?> f) |
| { |
| return !packed() || !isBit(f) && f.has(this); |
| } |
| |
| private final int getFlagWidth() |
| { |
| return (getFields().size() + 7)/8; |
| } |
| |
| private final int getPaddWidth() |
| { |
| int pw = getPackWidth() - getFlagWidth(); |
| assert pw > 0; |
| return pw; |
| } |
| |
| private final int getFlagCount() |
| { |
| return 8*getPackWidth(); |
| } |
| |
| private final int getReservedFlagCount() |
| { |
| return getFlagCount() - getFields().size(); |
| } |
| |
| @Override |
| public abstract void read(Decoder dec); |
| |
| @Override |
| public abstract void write(Encoder enc); |
| |
| public abstract Map<String,Object> getFields(); |
| |
| public abstract int getEncodedLength(); |
| |
| @Override |
| public String toString() |
| { |
| StringBuilder str = new StringBuilder(); |
| str.append(getClass().getSimpleName()); |
| |
| str.append("("); |
| boolean first = true; |
| for (Map.Entry<String,Object> me : getFields().entrySet()) |
| { |
| if (first) |
| { |
| first = false; |
| } |
| else |
| { |
| str.append(", "); |
| } |
| str.append(me.getKey()); |
| str.append("="); |
| str.append(formatValue(me.getValue())); |
| } |
| str.append(")"); |
| |
| return str.toString(); |
| } |
| |
| private Object formatValue(Object value) |
| { |
| if(value instanceof byte[]) |
| { |
| return Functions.str((byte[])value); |
| } |
| else if(value instanceof Object[]) |
| { |
| return Arrays.asList((Object[])value); |
| } |
| return value; |
| } |
| |
| } |