org.apache.qpid.framing.FieldArray Maven / Gradle / Ivy
/*
*
* 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 java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.AbstractCollection;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Date;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
public class FieldArray extends AbstractCollection
{
private final Collection _underlying;
private FieldArray(final Collection underlying)
{
_underlying = underlying;
}
@Override
public Iterator iterator()
{
return _underlying.iterator();
}
@Override
public int size()
{
return _underlying.size();
}
public int getEncodingSize()
{
int size = 0;
for( T obj : this)
{
size += AMQTypedValue.toTypedValue(obj).getEncodingSize()+1;
}
return size;
}
public static FieldArray asFieldArray(Collection collection)
{
if(collection instanceof FieldArray)
{
return (FieldArray) collection;
}
else
{
validateCollection(collection);
return new FieldArray<>(collection);
}
}
private static final Set> SUPPORTED_CLASSES = new HashSet<>(Arrays.asList(Boolean.class,
Byte.class,
Short.class,
Character.class,
Integer.class,
Long.class,
Float.class,
Double.class,
String.class,
FieldTable.class,
Date.class,
BigDecimal.class,
byte[].class));
private static void validateCollection(final Collection collection)
{
for(T val : collection)
{
if(!(val == null || SUPPORTED_CLASSES.contains(val.getClass()) || val instanceof Collection || val instanceof Map))
{
throw new IllegalArgumentException("Cannot convert an object of type " + val.getClass().getName());
}
}
}
public void writeToBuffer(final DataOutput buffer) throws IOException
{
buffer.writeInt(getEncodingSize());
for( T obj : this)
{
AMQTypedValue.toTypedValue(obj).writeToBuffer(buffer);
}
}
public static FieldArray readFromBuffer(final DataInput buffer) throws IOException
{
ArrayList