| /* |
| * 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.directmemory.lightning.internal.marshaller; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.lang.reflect.Type; |
| import java.util.Arrays; |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| import org.apache.directmemory.lightning.Marshaller; |
| import org.apache.directmemory.lightning.SerializationContext; |
| import org.apache.directmemory.lightning.TypeBindableMarshaller; |
| import org.apache.directmemory.lightning.base.AbstractMarshaller; |
| import org.apache.directmemory.lightning.exceptions.SerializerExecutionException; |
| import org.apache.directmemory.lightning.internal.CheatPropertyDescriptor; |
| import org.apache.directmemory.lightning.internal.util.TypeUtil; |
| import org.apache.directmemory.lightning.metadata.ClassDefinition; |
| import org.apache.directmemory.lightning.metadata.PropertyDescriptor; |
| |
| public class MapMarshaller |
| extends AbstractMarshaller |
| implements TypeBindableMarshaller |
| { |
| |
| private final Type mapKeyType; |
| |
| private final Type mapValueType; |
| |
| private Marshaller mapKeyTypeMarshaller; |
| |
| private Marshaller mapValueTypeMarshaller; |
| |
| public MapMarshaller() |
| { |
| this( null, null ); |
| } |
| |
| private MapMarshaller( Type mapKeyType, Type mapValueType ) |
| { |
| this.mapKeyType = mapKeyType; |
| this.mapValueType = mapValueType; |
| } |
| |
| @Override |
| public boolean acceptType( Class<?> type ) |
| { |
| return Map.class.isAssignableFrom( type ); |
| } |
| |
| @Override |
| public void marshall( Object value, PropertyDescriptor propertyDescriptor, DataOutput dataOutput, |
| SerializationContext serializationContext ) |
| throws IOException |
| { |
| |
| if ( writePossibleNull( value, dataOutput ) ) |
| { |
| Map<?, ?> map = (Map<?, ?>) value; |
| dataOutput.writeInt( map.size() ); |
| |
| Marshaller keyMarshaller = null; |
| ClassDefinition keyClassDefinition = null; |
| PropertyDescriptor keyPd = null; |
| Marshaller valueMarshaller = null; |
| ClassDefinition valueClassDefinition = null; |
| PropertyDescriptor valuePd = null; |
| if ( mapKeyType != null ) |
| { |
| ensureMarshallersInitialized( serializationContext ); |
| keyMarshaller = mapKeyTypeMarshaller; |
| Class<?> baseType = TypeUtil.getBaseType( mapKeyType ); |
| keyClassDefinition = |
| serializationContext.getClassDefinitionContainer().getClassDefinitionByType( baseType ); |
| keyPd = |
| new CheatPropertyDescriptor( propertyDescriptor.getPropertyName() + "Key", baseType, keyMarshaller ); |
| |
| valueMarshaller = mapValueTypeMarshaller; |
| baseType = TypeUtil.getBaseType( mapValueType ); |
| valueClassDefinition = |
| serializationContext.getClassDefinitionContainer().getClassDefinitionByType( baseType ); |
| valuePd = |
| new CheatPropertyDescriptor( propertyDescriptor.getPropertyName() + "Value", baseType, |
| valueMarshaller ); |
| } |
| |
| for ( Entry<?, ?> entry : map.entrySet() ) |
| { |
| if ( mapKeyType == null ) |
| { |
| keyMarshaller = |
| entry.getKey() != null ? serializationContext.findMarshaller( entry.getKey().getClass() ) |
| : null; |
| keyClassDefinition = |
| serializationContext.getClassDefinitionContainer().getClassDefinitionByType( entry.getKey().getClass() ); |
| keyPd = |
| new CheatPropertyDescriptor( propertyDescriptor.getPropertyName() + "Key", |
| entry.getKey().getClass(), keyMarshaller ); |
| |
| if ( entry.getValue() != null ) |
| { |
| valueMarshaller = |
| entry.getValue() != null ? serializationContext.findMarshaller( entry.getValue().getClass() ) |
| : null; |
| valueClassDefinition = |
| serializationContext.getClassDefinitionContainer().getClassDefinitionByType( entry.getValue().getClass() ); |
| valuePd = |
| new CheatPropertyDescriptor( propertyDescriptor.getPropertyName() + "Value", |
| entry.getValue().getClass(), valueMarshaller ); |
| } |
| } |
| |
| if ( writePossibleNull( entry.getKey(), dataOutput ) ) |
| { |
| dataOutput.writeLong( keyClassDefinition.getId() ); |
| keyMarshaller.marshall( entry.getKey(), keyPd, dataOutput, serializationContext ); |
| } |
| |
| if ( writePossibleNull( entry.getValue(), dataOutput ) ) |
| { |
| dataOutput.writeLong( valueClassDefinition.getId() ); |
| valueMarshaller.marshall( entry.getValue(), valuePd, dataOutput, serializationContext ); |
| } |
| } |
| } |
| } |
| |
| @Override |
| @SuppressWarnings( { "rawtypes", "unchecked" } ) |
| public <V> V unmarshall( PropertyDescriptor propertyDescriptor, DataInput dataInput, |
| SerializationContext serializationContext ) |
| throws IOException |
| { |
| if ( isNull( dataInput ) ) |
| { |
| return null; |
| } |
| |
| int size = dataInput.readInt(); |
| Map map = new LinkedHashMap( size ); |
| if ( size > 0 ) |
| { |
| for ( int i = 0; i < size; i++ ) |
| { |
| Object key = null; |
| if ( !isNull( dataInput ) ) |
| { |
| long keyClassId = dataInput.readLong(); |
| ClassDefinition keyClassDefinition = |
| serializationContext.getClassDefinitionContainer().getClassDefinitionById( keyClassId ); |
| |
| Marshaller keyMarshaller; |
| if ( mapKeyType != null ) |
| { |
| ensureMarshallersInitialized( serializationContext ); |
| keyMarshaller = mapKeyTypeMarshaller; |
| } |
| else |
| { |
| keyMarshaller = serializationContext.findMarshaller( keyClassDefinition.getType() ); |
| } |
| |
| PropertyDescriptor pd = |
| new CheatPropertyDescriptor( propertyDescriptor.getPropertyName() + "Key", |
| keyClassDefinition.getType(), keyMarshaller ); |
| key = keyMarshaller.unmarshall( pd, dataInput, serializationContext ); |
| } |
| |
| Object value = null; |
| if ( !isNull( dataInput ) ) |
| { |
| long valueClassId = dataInput.readLong(); |
| ClassDefinition valueClassDefinition = |
| serializationContext.getClassDefinitionContainer().getClassDefinitionById( valueClassId ); |
| |
| Marshaller valueMarshaller; |
| if ( mapKeyType != null ) |
| { |
| ensureMarshallersInitialized( serializationContext ); |
| valueMarshaller = mapValueTypeMarshaller; |
| } |
| else |
| { |
| valueMarshaller = serializationContext.findMarshaller( valueClassDefinition.getType() ); |
| } |
| |
| PropertyDescriptor pd = |
| new CheatPropertyDescriptor( propertyDescriptor.getPropertyName() + "Value", |
| valueClassDefinition.getType(), valueMarshaller ); |
| value = valueMarshaller.unmarshall( pd, dataInput, serializationContext ); |
| } |
| |
| map.put( key, value ); |
| } |
| } |
| |
| return (V) map; |
| } |
| |
| @Override |
| public Marshaller bindType( Type... bindingTypes ) |
| { |
| if ( bindingTypes == null ) |
| { |
| return new MapMarshaller(); |
| } |
| |
| if ( bindingTypes.length != 2 ) |
| { |
| throw new SerializerExecutionException( "Map type binding has no double generic: " |
| + Arrays.toString( bindingTypes ) ); |
| } |
| |
| Class<?> mapKeyType = (Class<?>) bindingTypes[0]; |
| Class<?> mapValueType = (Class<?>) bindingTypes[1]; |
| return new MapMarshaller( mapKeyType, mapValueType ); |
| } |
| |
| private void ensureMarshallersInitialized( SerializationContext serializationContext ) |
| { |
| if ( mapKeyTypeMarshaller != null && mapValueTypeMarshaller != null ) |
| return; |
| |
| mapKeyTypeMarshaller = serializationContext.findMarshaller( mapKeyType ); |
| mapValueTypeMarshaller = serializationContext.findMarshaller( mapValueType ); |
| } |
| } |