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com.dyuproject.protostuff.runtime.IdStrategy Maven / Gradle / Ivy
package com.dyuproject.protostuff.runtime;
import java.io.IOException;
import java.lang.reflect.Array;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Map;
import java.util.Map.Entry;
import com.dyuproject.protostuff.CollectionSchema;
import com.dyuproject.protostuff.GraphInput;
import com.dyuproject.protostuff.Input;
import com.dyuproject.protostuff.MapSchema;
import com.dyuproject.protostuff.MapSchema.MapWrapper;
import com.dyuproject.protostuff.Message;
import com.dyuproject.protostuff.Output;
import com.dyuproject.protostuff.Pipe;
import com.dyuproject.protostuff.ProtostuffException;
import com.dyuproject.protostuff.Schema;
import com.dyuproject.protostuff.runtime.MappedSchema.Field;
/***
* This base class handles all the IO for reading and writing polymorphic fields.
* When a field's type is polymorphic/dynamic (e.g interface/abstract/object),
* the type (id) needs to be written (ahead) before its value/content to be able to
* deserialize it correctly.
*
* The underlying impl will determine how the type (id) should be written.
*
* An {@link IdStrategy} is standalone if the {@link #primaryGroup} is not set.
*
* @author Leo Romanoff
* @author David Yu
*
*/
public abstract class IdStrategy
{
public final IdStrategy primaryGroup;
public final int groupId;
protected IdStrategy(IdStrategy primaryGroup, int groupId)
{
if(primaryGroup != null)
{
if(groupId <= 0 || 0 != (groupId & (groupId-1)))
{
throw new RuntimeException(
"The groupId must be a power of two (1,2,4,8,etc).");
}
}
else if(groupId != 0)
{
throw new RuntimeException("An IdStrategy without a primaryGroup " +
"(standalone) must have a groupId of zero.");
}
this.primaryGroup = primaryGroup;
this.groupId = groupId;
}
/**
* Generates a schema from the given class. If this strategy is part of a group,
* the existing fields of that group's schema will be re-used.
*/
protected Schema newSchema(Class typeClass)
{
// check if this is part of a group
if (primaryGroup == null)
return RuntimeSchema.createFrom(typeClass, this);
// only pojos created by runtime schema support groups
final Schema s = primaryGroup.getSchemaWrapper(typeClass, true).getSchema();
if (!(s instanceof RuntimeSchema))
return s;
final RuntimeSchema rs = (RuntimeSchema)s;
final ArrayList> fields = new ArrayList>(
rs.fields.length);
int copyCount = 0;
for (Field f : rs.fields)
{
final int groupFilter = f.groupFilter;
if (groupFilter != 0)
{
final int set; // set for exclusion
if (groupFilter > 0)
{
// inclusion
set = ~groupFilter & 0x7FFFFFFF;
}
else
{
// exclusion
set = -groupFilter;
}
if (0 != (groupId & set))
{
// this field is excluded on the current group id
continue;
}
}
if (f != (f = f.copy(this)))
copyCount++;
fields.add(f);
}
final int size = fields.size();
if (size == 0)
{
throw new RuntimeException("All fields were excluded for " +
rs.messageFullName() + " on group " + groupId);
}
return copyCount == 0 && size == rs.fields.length ? rs :
new RuntimeSchema(typeClass, fields,
// the last field
fields.get(size-1).number, rs.instantiator);
}
/**
* Thrown when a type is not known by the IdStrategy.
* The DefaultIdStrategy will never throw this exception though.
*/
public static class UnknownTypeException extends RuntimeException
{
private static final long serialVersionUID = 1L;
public UnknownTypeException(String msg)
{
super(msg);
}
}
/**
* Responsible for instantiating custom {@link IdStrategy} impls.
*/
public interface Factory
{
/**
* Creates a new {@link IdStrategy} instance (impl).
*/
public IdStrategy create();
/**
* Called after the method {@link #create()} has been called.
* This is used to prevent classloader issues.
* RuntimeEnv's {@link RuntimeEnv#ID_STRATEGY} need to be set first.
*/
public void postCreate();
}
/**
* Returns true if there is a {@link Delegate} explicitly registered for the
* {@code typeClass}.
*/
public abstract boolean isDelegateRegistered(Class typeClass);
/**
* Returns the {@link Delegate delegate}.
*/
public abstract HasDelegate getDelegateWrapper(Class typeClass);
/**
* Returns the {@link Delegate delegate}.
*/
public abstract Delegate getDelegate(Class typeClass);
/**
* Returns true if the {@code typeClass} is explicitly registered.
*/
public abstract boolean isRegistered(Class typeClass);
/**
* Returns the wrapper for the registered schema.
*/
public abstract HasSchema getRegistered(Class typeClass);
/**
* Returns the {@link HasSchema schema wrapper}.
* The caller is responsible that the typeClass is a pojo (e.g not an enum/array/etc).
*/
public abstract HasSchema getSchemaWrapper(Class typeClass,
boolean create);
/**
* Returns the {@link EnumIO}.
* The callers (internal field factories) are responsible that the class provided
* is an enum class.
*/
protected abstract EnumIO> getEnumIO(Class enumClass);
/**
* Returns the {@link CollectionSchema.MessageFactory}.
* The callers (internal field factories) are responsible that the class provided
* implements {@link Collection}.
*/
protected abstract CollectionSchema.MessageFactory getCollectionFactory(Class clazz);
/**
* Returns the {@link MapSchema.MessageFactory}.
* The callers (internal field factories}) are responsible that the class provided
* implements {@Map}.
*/
protected abstract MapSchema.MessageFactory getMapFactory(Class clazz);
// collection
protected abstract void writeCollectionIdTo(Output output, int fieldNumber,
Class clazz) throws IOException;
protected abstract void transferCollectionId(Input input, Output output,
int fieldNumber) throws IOException;
protected abstract CollectionSchema.MessageFactory resolveCollectionFrom(
Input input) throws IOException;
// map
protected abstract void writeMapIdTo(Output output, int fieldNumber,
Class clazz) throws IOException;
protected abstract void transferMapId(Input input, Output output,
int fieldNumber) throws IOException;
protected abstract MapSchema.MessageFactory resolveMapFrom(
Input input) throws IOException;
// enum
protected abstract void writeEnumIdTo(Output output, int fieldNumber,
Class clazz) throws IOException;
protected abstract EnumIO transferEnumId(Input input, Output output,
int fieldNumber) throws IOException;
protected abstract EnumIO resolveEnumFrom(Input input) throws IOException;
// pojo
protected abstract HasSchema tryWritePojoIdTo(Output output,
int fieldNumber, Class clazz, boolean registered) throws IOException;
protected abstract void writePojoIdTo(Output output, int fieldNumber,
Class clazz, HasSchema hs) throws IOException;
protected abstract HasSchema writePojoIdTo(Output output, int fieldNumber,
Class clazz) throws IOException;
protected abstract HasSchema transferPojoId(Input input, Output output,
int fieldNumber) throws IOException;
protected abstract HasSchema resolvePojoFrom(Input input, int fieldNumber)
throws IOException;
protected abstract Schema writeMessageIdTo(Output output, int fieldNumber,
Message message) throws IOException;
// delegate
/**
* If this method returns null, the clazz was not registered as a delegate.
*/
protected abstract HasDelegate tryWriteDelegateIdTo(Output output,
int fieldNumber, Class clazz) throws IOException;
protected abstract HasDelegate transferDelegateId(Input input, Output output,
int fieldNumber) throws IOException;
protected abstract HasDelegate resolveDelegateFrom(Input input) throws IOException;
// array
protected abstract void writeArrayIdTo(Output output, Class componentType)
throws IOException;
protected abstract void transferArrayId(Input input, Output output, int fieldNumber,
boolean mapped) throws IOException;
protected abstract Class resolveArrayComponentTypeFrom(Input input,
boolean mapped) throws IOException;
// class
protected abstract void writeClassIdTo(Output output, Class componentType,
boolean array) throws IOException;
protected abstract void transferClassId(Input input, Output output, int fieldNumber,
boolean mapped, boolean array) throws IOException;
protected abstract Class resolveClassFrom(Input input,
boolean mapped, boolean array) throws IOException;
// polymorphic requirements
final DerivativeSchema POLYMORPHIC_POJO_ELEMENT_SCHEMA =
new DerivativeSchema(this)
{
@SuppressWarnings("unchecked")
protected void doMergeFrom(Input input, Schema derivedSchema,
Object owner) throws IOException
{
final Object value = derivedSchema.newMessage();
if (input instanceof GraphInput)
{
// update the actual reference.
((GraphInput)input).updateLast(value, owner);
}
derivedSchema.mergeFrom(input, value);
if (MapWrapper.class == owner.getClass())
((MapWrapper)owner).setValue(value);
else
((Collection)owner).add(value);
}
};
// object polymorphic schema requirements
final ArraySchema ARRAY_ELEMENT_SCHEMA = new ArraySchema(this)
{
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if(MapWrapper.class == owner.getClass())
((MapWrapper)owner).setValue(value);
else
((Collection)owner).add(value);
}
};
final NumberSchema NUMBER_ELEMENT_SCHEMA = new NumberSchema(this)
{
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if(MapWrapper.class == owner.getClass())
((MapWrapper)owner).setValue(value);
else
((Collection)owner).add(value);
}
};
final ClassSchema CLASS_ELEMENT_SCHEMA = new ClassSchema(this)
{
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if(MapWrapper.class == owner.getClass())
((MapWrapper)owner).setValue(value);
else
((Collection)owner).add(value);
}
};
final PolymorphicEnumSchema POLYMORPHIC_ENUM_ELEMENT_SCHEMA =
new PolymorphicEnumSchema(this)
{
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if(MapWrapper.class == owner.getClass())
((MapWrapper)owner).setValue(value);
else
((Collection)owner).add(value);
}
};
final PolymorphicThrowableSchema POLYMORPHIC_THROWABLE_ELEMENT_SCHEMA =
new PolymorphicThrowableSchema(this)
{
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if(MapWrapper.class == owner.getClass())
((MapWrapper)owner).setValue(value);
else
((Collection)owner).add(value);
}
};
final ObjectSchema OBJECT_ELEMENT_SCHEMA = new ObjectSchema(this)
{
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if(MapWrapper.class == owner.getClass())
((MapWrapper)owner).setValue(value);
else
((Collection)owner).add(value);
}
};
// object dynamic schema requirements
final Schema DYNAMIC_VALUE_SCHEMA = new Schema()
{
public String getFieldName(int number)
{
return ObjectSchema.name(number);
}
public int getFieldNumber(String name)
{
return ObjectSchema.number(name);
}
public boolean isInitialized(Object owner)
{
return true;
}
public String messageFullName()
{
return Object.class.getName();
}
public String messageName()
{
return Object.class.getSimpleName();
}
public Object newMessage()
{
// cannot instantiate because the type is dynamic.
throw new UnsupportedOperationException();
}
public Class typeClass()
{
return Object.class;
}
@SuppressWarnings("unchecked")
public void mergeFrom(Input input, Object owner) throws IOException
{
if(PMapWrapper.class == owner.getClass())
{
// called from ENTRY_SCHEMA
((PMapWrapper)owner).setValue(ObjectSchema.readObjectFrom(input,
this, owner, IdStrategy.this));
}
else
{
// called from COLLECTION_SCHEMA
((Collection)owner).add(ObjectSchema.readObjectFrom(input,
this, owner, IdStrategy.this));
}
}
public void writeTo(Output output, Object message) throws IOException
{
ObjectSchema.writeObjectTo(output, message, this, IdStrategy.this);
}
};
final Pipe.Schema DYNAMIC_VALUE_PIPE_SCHEMA =
new Pipe.Schema(DYNAMIC_VALUE_SCHEMA)
{
protected void transfer(Pipe pipe, Input input, Output output) throws IOException
{
ObjectSchema.transferObject(this, pipe, input, output, IdStrategy.this);
}
};
final Schema> COLLECTION_SCHEMA =
new Schema>()
{
public String getFieldName(int number)
{
return number == 1 ? CollectionSchema.FIELD_NAME_VALUE : null;
}
public int getFieldNumber(String name)
{
return name.length() == 1 && name.charAt(0) == 'v' ? 1 : 0;
}
public boolean isInitialized(Collection owner)
{
return true;
}
public String messageFullName()
{
return Collection.class.getName();
}
public String messageName()
{
return Collection.class.getSimpleName();
}
public Collection newMessage()
{
throw new UnsupportedOperationException();
}
public Class> typeClass()
{
return Collection.class;
}
public void mergeFrom(Input input, Collection message) throws IOException
{
for(int number = input.readFieldNumber(this);;
number = input.readFieldNumber(this))
{
switch(number)
{
case 0:
return;
case 1:
final Object value = input.mergeObject(message,
DYNAMIC_VALUE_SCHEMA);
if(input instanceof GraphInput
&& ((GraphInput)input).isCurrentMessageReference())
{
// a reference from polymorphic+cyclic graph deser
message.add(value);
}
break;
default:
throw new ProtostuffException("Corrupt input.");
}
}
}
public void writeTo(Output output, Collection message) throws IOException
{
for(Object value : message)
{
if(value != null)
output.writeObject(1, value, DYNAMIC_VALUE_SCHEMA, true);
}
}
};
final Pipe.Schema> COLLECTION_PIPE_SCHEMA =
new Pipe.Schema>(COLLECTION_SCHEMA)
{
protected void transfer(Pipe pipe, Input input, Output output) throws IOException
{
for(int number = input.readFieldNumber(wrappedSchema);;
number = input.readFieldNumber(wrappedSchema))
{
switch(number)
{
case 0:
return;
case 1:
output.writeObject(number, pipe, DYNAMIC_VALUE_PIPE_SCHEMA, true);
break;
default:
throw new ProtostuffException("The collection was incorrectly " +
"serialized.");
}
}
}
};
final Schema ARRAY_SCHEMA = new Schema()
{
public String getFieldName(int number)
{
return number == 1 ? CollectionSchema.FIELD_NAME_VALUE : null;
}
public int getFieldNumber(String name)
{
return name.length() == 1 && name.charAt(0) == 'v' ? 1 : 0;
}
public boolean isInitialized(Object owner)
{
return true;
}
public String messageFullName()
{
return Array.class.getName();
}
public String messageName()
{
return Array.class.getSimpleName();
}
public Object newMessage()
{
throw new UnsupportedOperationException();
}
public Class typeClass()
{
return Object.class;
}
public void mergeFrom(Input input, Object message) throws IOException
{
// using COLLECTION_SCHEMA instead.
throw new UnsupportedOperationException();
}
public void writeTo(Output output, Object message) throws IOException
{
final Object[] array = (Object[])message;
for (int i = 0, len = array.length; i < len; i++)
{
final Object value = array[i];
if(value != null)
{
output.writeObject(1, value, DYNAMIC_VALUE_SCHEMA, true);
}
}
}
};
final Pipe.Schema ARRAY_PIPE_SCHEMA =
new Pipe.Schema(ARRAY_SCHEMA)
{
protected void transfer(Pipe pipe, Input input, Output output) throws IOException
{
for(int number = input.readFieldNumber(wrappedSchema);;
number = input.readFieldNumber(wrappedSchema))
{
switch(number)
{
case 0:
return;
case 1:
output.writeObject(number, pipe, DYNAMIC_VALUE_PIPE_SCHEMA, true);
break;
default:
throw new ProtostuffException("The array was incorrectly " +
"serialized.");
}
}
}
};
final Schema> MAP_SCHEMA =
new Schema>()
{
public final String getFieldName(int number)
{
return number == 1 ? MapSchema.FIELD_NAME_ENTRY : null;
}
public final int getFieldNumber(String name)
{
return name.length() == 1 && name.charAt(0) == 'e' ? 1 : 0;
}
public boolean isInitialized(Map owner)
{
return true;
}
public String messageFullName()
{
return Map.class.getName();
}
public String messageName()
{
return Map.class.getSimpleName();
}
public Map newMessage()
{
throw new UnsupportedOperationException();
}
public Class> typeClass()
{
return Map.class;
}
public void mergeFrom(Input input, Map message) throws IOException
{
PMapWrapper entry = null;
for(int number = input.readFieldNumber(this);;
number = input.readFieldNumber(this))
{
switch(number)
{
case 0:
return;
case 1:
if(entry == null)
{
// lazy initialize
entry = new PMapWrapper(message);
}
if(entry != input.mergeObject(entry, ENTRY_SCHEMA))
{
// an entry will always be unique
// it can never be a reference.
throw new IllegalStateException(
"A Map.Entry will always be " +
"unique, hence it cannot be a reference " +
"obtained from " + input.getClass().getName());
}
break;
default:
throw new ProtostuffException("The map was incorrectly serialized.");
}
}
}
public void writeTo(Output output, Map message) throws IOException
{
for(Map.Entry entry : message.entrySet())
{
output.writeObject(1, entry, ENTRY_SCHEMA, true);
}
}
};
final Pipe.Schema> MAP_PIPE_SCHEMA =
new Pipe.Schema>(MAP_SCHEMA)
{
protected void transfer(Pipe pipe, Input input, Output output) throws IOException
{
for(int number = input.readFieldNumber(wrappedSchema);;
number = input.readFieldNumber(wrappedSchema))
{
switch(number)
{
case 0:
return;
case 1:
output.writeObject(number, pipe, ENTRY_PIPE_SCHEMA, true);
break;
default:
throw new ProtostuffException("The map was incorrectly " +
"serialized.");
}
}
}
};
final Schema> ENTRY_SCHEMA =
new Schema>()
{
public final String getFieldName(int number)
{
switch(number)
{
case 1:
return MapSchema.FIELD_NAME_KEY;
case 2:
return MapSchema.FIELD_NAME_VALUE;
default:
return null;
}
}
public final int getFieldNumber(String name)
{
if(name.length() != 1)
return 0;
switch(name.charAt(0))
{
case 'k':
return 1;
case 'v':
return 2;
default:
return 0;
}
}
public boolean isInitialized(Entry message)
{
return true;
}
public String messageFullName()
{
return Entry.class.getName();
}
public String messageName()
{
return Entry.class.getSimpleName();
}
public Entry newMessage()
{
throw new UnsupportedOperationException();
}
public Class> typeClass()
{
return Entry.class;
}
public void mergeFrom(Input input, Entry message)
throws IOException
{
// Nobody else calls this except MAP_SCHEMA.mergeFrom
final PMapWrapper entry = (PMapWrapper)message;
Object key = null, value = null;
for(int number = input.readFieldNumber(this);;
number = input.readFieldNumber(this))
{
switch(number)
{
case 0:
entry.map.put(key, value);
return;
case 1:
if(key != null)
{
throw new ProtostuffException("The map was incorrectly " +
"serialized.");
}
key = input.mergeObject(entry, DYNAMIC_VALUE_SCHEMA);
if(entry != key)
{
// a reference.
assert key != null;
}
else
{
// entry held the key
key = entry.setValue(null);
assert key != null;
}
break;
case 2:
if(value != null)
{
throw new ProtostuffException("The map was incorrectly " +
"serialized.");
}
value = input.mergeObject(entry, DYNAMIC_VALUE_SCHEMA);
if(entry != value)
{
// a reference.
assert value != null;
}
else
{
// entry held the value
value = entry.setValue(null);
assert value != null;
}
break;
default:
throw new ProtostuffException("The map was incorrectly " +
"serialized.");
}
}
}
public void writeTo(Output output, Entry entry)
throws IOException
{
if(entry.getKey() != null)
output.writeObject(1, entry.getKey(), DYNAMIC_VALUE_SCHEMA, false);
if(entry.getValue() != null)
output.writeObject(2, entry.getValue(), DYNAMIC_VALUE_SCHEMA, false);
}
};
final Pipe.Schema> ENTRY_PIPE_SCHEMA =
new Pipe.Schema>(ENTRY_SCHEMA)
{
protected void transfer(Pipe pipe, Input input, Output output) throws IOException
{
for(int number = input.readFieldNumber(wrappedSchema);;
number = input.readFieldNumber(wrappedSchema))
{
switch(number)
{
case 0:
return;
case 1:
output.writeObject(number, pipe, DYNAMIC_VALUE_PIPE_SCHEMA, false);
break;
case 2:
output.writeObject(number, pipe, DYNAMIC_VALUE_PIPE_SCHEMA, false);
break;
default:
throw new ProtostuffException("The map was incorrectly " +
"serialized.");
}
}
}
};
final Schema OBJECT_SCHEMA = new Schema()
{
public String getFieldName(int number)
{
return ObjectSchema.name(number);
}
public int getFieldNumber(String name)
{
return ObjectSchema.number(name);
}
public boolean isInitialized(Object owner)
{
return true;
}
public String messageFullName()
{
return Object.class.getName();
}
public String messageName()
{
return Object.class.getSimpleName();
}
public Object newMessage()
{
// cannot instantiate because the type is dynamic.
throw new UnsupportedOperationException();
}
public Class typeClass()
{
return Object.class;
}
public void mergeFrom(Input input, Object owner) throws IOException
{
((Wrapper)owner).value = ObjectSchema.readObjectFrom(input, this, owner,
IdStrategy.this);
}
public void writeTo(Output output, Object message) throws IOException
{
ObjectSchema.writeObjectTo(output, message, this, IdStrategy.this);
}
};
final Pipe.Schema OBJECT_PIPE_SCHEMA =
new Pipe.Schema(OBJECT_SCHEMA)
{
protected void transfer(Pipe pipe, Input input, Output output) throws IOException
{
ObjectSchema.transferObject(this, pipe, input, output, IdStrategy.this);
}
};
final Schema CLASS_SCHEMA = new Schema()
{
public String getFieldName(int number)
{
return ClassSchema.name(number);
}
public int getFieldNumber(String name)
{
return ClassSchema.number(name);
}
public boolean isInitialized(Object owner)
{
return true;
}
public String messageFullName()
{
return Class.class.getName();
}
public String messageName()
{
return Class.class.getSimpleName();
}
public Object newMessage()
{
// cannot instantiate because the type is dynamic.
throw new UnsupportedOperationException();
}
public Class typeClass()
{
return Object.class;
}
public void mergeFrom(Input input, Object owner) throws IOException
{
((Wrapper)owner).value = ClassSchema.readObjectFrom(input, this, owner,
IdStrategy.this);
}
public void writeTo(Output output, Object message) throws IOException
{
ClassSchema.writeObjectTo(output, message, this, IdStrategy.this);
}
};
final Pipe.Schema CLASS_PIPE_SCHEMA =
new Pipe.Schema(CLASS_SCHEMA)
{
protected void transfer(Pipe pipe, Input input, Output output) throws IOException
{
ClassSchema.transferObject(this, pipe, input, output, IdStrategy.this);
}
};
final Schema POLYMORPHIC_COLLECTION_SCHEMA = new Schema()
{
public String getFieldName(int number)
{
return PolymorphicCollectionSchema.name(number);
}
public int getFieldNumber(String name)
{
return PolymorphicCollectionSchema.number(name);
}
public boolean isInitialized(Object owner)
{
return true;
}
public String messageFullName()
{
return Collection.class.getName();
}
public String messageName()
{
return Collection.class.getSimpleName();
}
public Object newMessage()
{
// cannot instantiate because the type is dynamic.
throw new UnsupportedOperationException();
}
public Class typeClass()
{
return Object.class;
}
public void mergeFrom(Input input, Object owner) throws IOException
{
((Wrapper)owner).value = PolymorphicCollectionSchema.readObjectFrom(input,
this, owner, IdStrategy.this);
}
public void writeTo(Output output, Object message) throws IOException
{
PolymorphicCollectionSchema.writeObjectTo(output, message, this,
IdStrategy.this);
}
};
final Pipe.Schema POLYMORPHIC_COLLECTION_PIPE_SCHEMA =
new Pipe.Schema(POLYMORPHIC_COLLECTION_SCHEMA)
{
protected void transfer(Pipe pipe, Input input, Output output) throws IOException
{
PolymorphicCollectionSchema.transferObject(this, pipe, input, output,
IdStrategy.this);
}
};
final Schema POLYMORPHIC_MAP_SCHEMA = new Schema()
{
public String getFieldName(int number)
{
return PolymorphicMapSchema.name(number);
}
public int getFieldNumber(String name)
{
return PolymorphicMapSchema.number(name);
}
public boolean isInitialized(Object owner)
{
return true;
}
public String messageFullName()
{
return Map.class.getName();
}
public String messageName()
{
return Map.class.getSimpleName();
}
public Object newMessage()
{
// cannot instantiate because the type is dynamic.
throw new UnsupportedOperationException();
}
public Class typeClass()
{
return Object.class;
}
public void mergeFrom(Input input, Object owner) throws IOException
{
((Wrapper)owner).value = PolymorphicMapSchema.readObjectFrom(input,
this, owner, IdStrategy.this);
}
public void writeTo(Output output, Object message) throws IOException
{
PolymorphicMapSchema.writeObjectTo(output, message, this,
IdStrategy.this);
}
};
final Pipe.Schema POLYMORPHIC_MAP_PIPE_SCHEMA =
new Pipe.Schema(POLYMORPHIC_MAP_SCHEMA)
{
protected void transfer(Pipe pipe, Input input, Output output) throws IOException
{
PolymorphicMapSchema.transferObject(this, pipe, input, output,
IdStrategy.this);
}
};
// array element schema
final ArraySchemas.BoolArray ARRAY_BOOL_PRIMITIVE_SCHEMA =
new ArraySchemas.BoolArray(this, null, true);
final ArraySchemas.BoolArray ARRAY_BOOL_BOXED_SCHEMA =
new ArraySchemas.BoolArray(this, null, false);
final ArraySchemas.BoolArray ARRAY_BOOL_DERIVED_SCHEMA =
new ArraySchemas.BoolArray(this, null, false)
{
@Override
public Object readFrom(Input input, Object owner) throws IOException
{
if (ArraySchemas.ID_ARRAY_LEN != input.readFieldNumber(this))
throw new ProtostuffException("Corrupt input.");
int len = input.readInt32();
return len >= 0 ? readPrimitiveFrom(input, owner, len) :
readBoxedFrom(input, owner, -len - 1);
}
@Override
protected void writeLengthTo(Output output, int len, boolean primitive)
throws IOException
{
if (primitive)
output.writeInt32(ArraySchemas.ID_ARRAY_LEN, len, false);
else
output.writeInt32(ArraySchemas.ID_ARRAY_LEN, -(len + 1), false);
}
@Override
public void writeTo(Output output, Object value) throws IOException
{
writeTo(output, value, value.getClass().getComponentType().isPrimitive());
}
@Override
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if (MapWrapper.class == owner.getClass())
((MapWrapper) owner).setValue(value);
else
((Collection) owner).add(value);
}
};
final ArraySchemas.CharArray ARRAY_CHAR_PRIMITIVE_SCHEMA =
new ArraySchemas.CharArray(this, null, true);
final ArraySchemas.CharArray ARRAY_CHAR_BOXED_SCHEMA =
new ArraySchemas.CharArray(this, null, false);
final ArraySchemas.CharArray ARRAY_CHAR_DERIVED_SCHEMA =
new ArraySchemas.CharArray(this, null, false)
{
@Override
public Object readFrom(Input input, Object owner) throws IOException
{
if (ArraySchemas.ID_ARRAY_LEN != input.readFieldNumber(this))
throw new ProtostuffException("Corrupt input.");
int len = input.readInt32();
return len >= 0 ? readPrimitiveFrom(input, owner, len) :
readBoxedFrom(input, owner, -len - 1);
}
@Override
protected void writeLengthTo(Output output, int len, boolean primitive)
throws IOException
{
if (primitive)
output.writeInt32(ArraySchemas.ID_ARRAY_LEN, len, false);
else
output.writeInt32(ArraySchemas.ID_ARRAY_LEN, -(len + 1), false);
}
@Override
public void writeTo(Output output, Object value) throws IOException
{
writeTo(output, value, value.getClass().getComponentType().isPrimitive());
}
@Override
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if (MapWrapper.class == owner.getClass())
((MapWrapper) owner).setValue(value);
else
((Collection) owner).add(value);
}
};
final ArraySchemas.ShortArray ARRAY_SHORT_PRIMITIVE_SCHEMA =
new ArraySchemas.ShortArray(this, null, true);
final ArraySchemas.ShortArray ARRAY_SHORT_BOXED_SCHEMA =
new ArraySchemas.ShortArray(this, null, false);
final ArraySchemas.ShortArray ARRAY_SHORT_DERIVED_SCHEMA =
new ArraySchemas.ShortArray(this, null, false)
{
@Override
public Object readFrom(Input input, Object owner) throws IOException
{
if (ArraySchemas.ID_ARRAY_LEN != input.readFieldNumber(this))
throw new ProtostuffException("Corrupt input.");
int len = input.readInt32();
return len >= 0 ? readPrimitiveFrom(input, owner, len) :
readBoxedFrom(input, owner, -len - 1);
}
@Override
protected void writeLengthTo(Output output, int len, boolean primitive)
throws IOException
{
if (primitive)
output.writeInt32(ArraySchemas.ID_ARRAY_LEN, len, false);
else
output.writeInt32(ArraySchemas.ID_ARRAY_LEN, -(len + 1), false);
}
@Override
public void writeTo(Output output, Object value) throws IOException
{
writeTo(output, value, value.getClass().getComponentType().isPrimitive());
}
@Override
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if (MapWrapper.class == owner.getClass())
((MapWrapper) owner).setValue(value);
else
((Collection) owner).add(value);
}
};
final ArraySchemas.Int32Array ARRAY_INT32_PRIMITIVE_SCHEMA =
new ArraySchemas.Int32Array(this, null, true);
final ArraySchemas.Int32Array ARRAY_INT32_BOXED_SCHEMA =
new ArraySchemas.Int32Array(this, null, false);
final ArraySchemas.Int32Array ARRAY_INT32_DERIVED_SCHEMA =
new ArraySchemas.Int32Array(this, null, false)
{
@Override
public Object readFrom(Input input, Object owner) throws IOException
{
if (ArraySchemas.ID_ARRAY_LEN != input.readFieldNumber(this))
throw new ProtostuffException("Corrupt input.");
int len = input.readInt32();
return len >= 0 ? readPrimitiveFrom(input, owner, len) :
readBoxedFrom(input, owner, -len - 1);
}
@Override
protected void writeLengthTo(Output output, int len, boolean primitive)
throws IOException
{
if (primitive)
output.writeInt32(ArraySchemas.ID_ARRAY_LEN, len, false);
else
output.writeInt32(ArraySchemas.ID_ARRAY_LEN, -(len + 1), false);
}
@Override
public void writeTo(Output output, Object value) throws IOException
{
writeTo(output, value, value.getClass().getComponentType().isPrimitive());
}
@Override
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if (MapWrapper.class == owner.getClass())
((MapWrapper) owner).setValue(value);
else
((Collection) owner).add(value);
}
};
final ArraySchemas.Int64Array ARRAY_INT64_PRIMITIVE_SCHEMA =
new ArraySchemas.Int64Array(this, null, true);
final ArraySchemas.Int64Array ARRAY_INT64_BOXED_SCHEMA =
new ArraySchemas.Int64Array(this, null, false);
final ArraySchemas.Int64Array ARRAY_INT64_DERIVED_SCHEMA =
new ArraySchemas.Int64Array(this, null, false)
{
@Override
public Object readFrom(Input input, Object owner) throws IOException
{
if (ArraySchemas.ID_ARRAY_LEN != input.readFieldNumber(this))
throw new ProtostuffException("Corrupt input.");
int len = input.readInt32();
return len >= 0 ? readPrimitiveFrom(input, owner, len) :
readBoxedFrom(input, owner, -len - 1);
}
@Override
protected void writeLengthTo(Output output, int len, boolean primitive)
throws IOException
{
if (primitive)
output.writeInt32(ArraySchemas.ID_ARRAY_LEN, len, false);
else
output.writeInt32(ArraySchemas.ID_ARRAY_LEN, -(len + 1), false);
}
@Override
public void writeTo(Output output, Object value) throws IOException
{
writeTo(output, value, value.getClass().getComponentType().isPrimitive());
}
@Override
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if (MapWrapper.class == owner.getClass())
((MapWrapper) owner).setValue(value);
else
((Collection) owner).add(value);
}
};
final ArraySchemas.FloatArray ARRAY_FLOAT_PRIMITIVE_SCHEMA =
new ArraySchemas.FloatArray(this, null, true);
final ArraySchemas.FloatArray ARRAY_FLOAT_BOXED_SCHEMA =
new ArraySchemas.FloatArray(this, null, false);
final ArraySchemas.FloatArray ARRAY_FLOAT_DERIVED_SCHEMA =
new ArraySchemas.FloatArray(this, null, false)
{
@Override
public Object readFrom(Input input, Object owner) throws IOException
{
if (ArraySchemas.ID_ARRAY_LEN != input.readFieldNumber(this))
throw new ProtostuffException("Corrupt input.");
int len = input.readInt32();
return len >= 0 ? readPrimitiveFrom(input, owner, len) :
readBoxedFrom(input, owner, -len - 1);
}
@Override
protected void writeLengthTo(Output output, int len, boolean primitive)
throws IOException
{
if (primitive)
output.writeInt32(ArraySchemas.ID_ARRAY_LEN, len, false);
else
output.writeInt32(ArraySchemas.ID_ARRAY_LEN, -(len + 1), false);
}
@Override
public void writeTo(Output output, Object value) throws IOException
{
writeTo(output, value, value.getClass().getComponentType().isPrimitive());
}
@Override
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if (MapWrapper.class == owner.getClass())
((MapWrapper) owner).setValue(value);
else
((Collection) owner).add(value);
}
};
final ArraySchemas.DoubleArray ARRAY_DOUBLE_PRIMITIVE_SCHEMA =
new ArraySchemas.DoubleArray(this, null, true);
final ArraySchemas.DoubleArray ARRAY_DOUBLE_BOXED_SCHEMA =
new ArraySchemas.DoubleArray(this, null, false);
final ArraySchemas.DoubleArray ARRAY_DOUBLE_DERIVED_SCHEMA =
new ArraySchemas.DoubleArray(this, null, false)
{
@Override
public Object readFrom(Input input, Object owner) throws IOException
{
if (ArraySchemas.ID_ARRAY_LEN != input.readFieldNumber(this))
throw new ProtostuffException("Corrupt input.");
int len = input.readInt32();
return len >= 0 ? readPrimitiveFrom(input, owner, len) :
readBoxedFrom(input, owner, -len - 1);
}
@Override
protected void writeLengthTo(Output output, int len, boolean primitive)
throws IOException
{
if (primitive)
output.writeInt32(ArraySchemas.ID_ARRAY_LEN, len, false);
else
output.writeInt32(ArraySchemas.ID_ARRAY_LEN, -(len + 1), false);
}
@Override
public void writeTo(Output output, Object value) throws IOException
{
writeTo(output, value, value.getClass().getComponentType().isPrimitive());
}
@Override
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if (MapWrapper.class == owner.getClass())
((MapWrapper) owner).setValue(value);
else
((Collection) owner).add(value);
}
};
final ArraySchemas.StringArray ARRAY_STRING_SCHEMA =
new ArraySchemas.StringArray(this, null)
{
@Override
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if (MapWrapper.class == owner.getClass())
((MapWrapper) owner).setValue(value);
else
((Collection) owner).add(value);
}
};
final ArraySchemas.ByteStringArray ARRAY_BYTESTRING_SCHEMA =
new ArraySchemas.ByteStringArray(this, null)
{
@Override
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if (MapWrapper.class == owner.getClass())
((MapWrapper) owner).setValue(value);
else
((Collection) owner).add(value);
}
};
final ArraySchemas.ByteArrayArray ARRAY_BYTEARRAY_SCHEMA =
new ArraySchemas.ByteArrayArray(this, null)
{
@Override
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if (MapWrapper.class == owner.getClass())
((MapWrapper) owner).setValue(value);
else
((Collection) owner).add(value);
}
};
final ArraySchemas.BigDecimalArray ARRAY_BIGDECIMAL_SCHEMA =
new ArraySchemas.BigDecimalArray(this, null)
{
@Override
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if (MapWrapper.class == owner.getClass())
((MapWrapper) owner).setValue(value);
else
((Collection) owner).add(value);
}
};
final ArraySchemas.BigIntegerArray ARRAY_BIGINTEGER_SCHEMA =
new ArraySchemas.BigIntegerArray(this, null)
{
@Override
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if (MapWrapper.class == owner.getClass())
((MapWrapper) owner).setValue(value);
else
((Collection) owner).add(value);
}
};
final ArraySchemas.DateArray ARRAY_DATE_SCHEMA =
new ArraySchemas.DateArray(this, null)
{
@Override
@SuppressWarnings("unchecked")
protected void setValue(Object value, Object owner)
{
if (MapWrapper.class == owner.getClass())
((MapWrapper) owner).setValue(value);
else
((Collection) owner).add(value);
}
};
private static final class PMapWrapper implements Entry
{
final Map map;
private Object value;
PMapWrapper(Map map)
{
this.map = map;
}
@Override
public Object getKey()
{
throw new UnsupportedOperationException();
}
@Override
public Object getValue()
{
return value;
}
@Override
public Object setValue(Object value)
{
final Object last = this.value;
this.value = value;
return last;
}
}
static final class Wrapper
{
Object value;
}
protected static T createMessageInstance(Class clazz)
{
try
{
return clazz.newInstance();
}
catch (InstantiationException e)
{
throw new RuntimeException(e);
}
catch (IllegalAccessException e)
{
// ignore
}
try
{
Constructor constructor = clazz.getDeclaredConstructor();
constructor.setAccessible(true);
return constructor.newInstance();
}
catch (NoSuchMethodException e)
{
throw new RuntimeException(e);
}
catch (InstantiationException e)
{
throw new RuntimeException(e);
}
catch (InvocationTargetException e)
{
throw new RuntimeException(e);
}
catch (IllegalAccessException e)
{
throw new RuntimeException(e);
}
}
}
