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Oracle Coherence Community Edition
/*
* Copyright (c) 2000, 2021, Oracle and/or its affiliates.
*
* Licensed under the Universal Permissive License v 1.0 as shown at
* http://oss.oracle.com/licenses/upl.
*/
package com.tangosol.io.pof;
import com.tangosol.io.Evolvable;
import com.tangosol.io.ReadBuffer;
import com.tangosol.io.WriteBuffer;
import com.tangosol.io.pof.schema.annotation.PortableType;
import com.tangosol.util.Base;
import com.tangosol.util.LongArray;
import com.tangosol.util.SimpleLongArray;
import javax.inject.Named;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
/**
* Basic {@link PofContext} implementation.
*
* @author jh 2006.07.18
* @see PortableObjectSerializer
* @since Coherence 3.2
*/
@Named("simple-pof")
public class SimplePofContext
implements PofContext
{
// ----- constructors ---------------------------------------------------
/**
* Create a new SimplePofContext.
*/
public SimplePofContext()
{
}
// ----- Serializer interface -------------------------------------------
/**
* {@inheritDoc}
*/
public void serialize(WriteBuffer.BufferOutput out, Object o)
throws IOException
{
PofBufferWriter writer = new PofBufferWriter(out, this);
// COH-5065: due to the complexity of maintaining references
// in future data, we won't support them for Evolvable objects
if (isReferenceEnabled() && !(o instanceof Evolvable))
{
writer.enableReference();
}
try
{
writer.writeObject(-1, o);
}
catch (RuntimeException e)
{
// Guarantee that runtime exceptions from called methods are
// IOException
IOException ioex = new IOException(e.getMessage());
ioex.initCause(e);
throw ioex;
}
}
/**
* {@inheritDoc}
*/
public Object deserialize(ReadBuffer.BufferInput in)
throws IOException
{
PofBufferReader reader = new PofBufferReader(in, this);
try
{
return reader.readObject(-1);
}
catch (RuntimeException e)
{
// Guarantee that runtime exceptions from called methods are
// IOException
IOException ioex = new IOException(e.getMessage());
ioex.initCause(e);
throw ioex;
}
}
@Override
public String getName()
{
return "simple-pof";
}
// ----- PofContext implementation --------------------------------------
/**
* {@inheritDoc}
*/
public PofSerializer getPofSerializer(int nTypeId)
{
validateTypeId(nTypeId);
LongArray laSerializer = m_laSerializer;
PofSerializer serializer = laSerializer == null
? null
: (PofSerializer) laSerializer.get(nTypeId);
if (serializer == null)
{
throw new IllegalArgumentException("unknown user type: " + nTypeId);
}
return serializer;
}
/**
* {@inheritDoc}
*/
public int getUserTypeIdentifier(Object o)
{
if (o == null)
{
throw new IllegalArgumentException("Object cannot be null");
}
return getUserTypeIdentifier(o.getClass());
}
/**
* {@inheritDoc}
*/
public int getUserTypeIdentifier(Class clz)
{
if (clz == null)
{
throw new IllegalArgumentException("Class cannot be null");
}
Map mapTypeId = m_mapTypeId;
Integer ITypeId = mapTypeId == null
? null
: (Integer) mapTypeId.get(clz);
if (ITypeId == null)
{
throw new IllegalArgumentException("unknown user type: " + clz);
}
return ITypeId.intValue();
}
/**
* {@inheritDoc}
*/
public int getUserTypeIdentifier(String sClass)
{
if (sClass == null)
{
throw new IllegalArgumentException("Class name cannot be null");
}
try
{
return getUserTypeIdentifier(Class.forName(sClass));
}
catch (Exception e)
{
throw Base.ensureRuntimeException(e);
}
}
/**
* {@inheritDoc}
*/
public String getClassName(int nTypeId)
{
return getClass(nTypeId).getName();
}
/**
* {@inheritDoc}
*/
public Class getClass(int nTypeId)
{
validateTypeId(nTypeId);
LongArray laClass = m_laClass;
Class clz = laClass == null ? null : (Class) laClass.get(nTypeId);
if (clz == null)
{
throw new IllegalArgumentException("unknown user type: " + nTypeId);
}
return clz;
}
/**
* {@inheritDoc}
*/
public boolean isUserType(Object o)
{
if (o == null)
{
throw new IllegalArgumentException("Object cannot be null");
}
return isUserType(o.getClass());
}
/**
* {@inheritDoc}
*/
public boolean isUserType(Class clz)
{
if (clz == null)
{
throw new IllegalArgumentException("Class cannot be null");
}
Map mapTypeId = m_mapTypeId;
return mapTypeId != null && mapTypeId.get(clz) != null;
}
/**
* {@inheritDoc}
*/
public boolean isUserType(String sClass)
{
if (sClass == null)
{
throw new IllegalArgumentException("Class name cannot be null");
}
try
{
return isUserType(Class.forName(sClass));
}
catch (Exception e)
{
throw Base.ensureRuntimeException(e);
}
}
/**
* {@inheritDoc}
*/
public boolean isPreferJavaTime()
{
return m_fPreferJavaTime;
}
// ----- user type registration -----------------------------------------
/**
* Register {@link PortableType}.
*
* @param clz the portable type to register with this PofContext; must
* not be null, and must be annotated with {@link PortableType}
* annotation
*
* @throws IllegalArgumentException on invalid type identifer, class, or
* PofSerializer
*/
public SimplePofContext registerPortableType(Class clz)
{
PortableType pt = clz.getAnnotation(PortableType.class);
if (pt == null)
{
throw new IllegalArgumentException("Class " + clz.getName() + " is not annotated with @PortableType");
}
registerUserType(pt.id(), clz, new PortableTypeSerializer<>(pt.id(), clz));
return this;
}
/**
* Register multiple {@link PortableType}s.
*
* @param aClz the array of portable types to register with this PofContext;
* each specified class must be annotated with {@link PortableType}
* annotation
*
* @throws IllegalArgumentException if any of the specified classes is not a valid
* {@link PortableType}
*/
public SimplePofContext registerPortableTypes(Class... aClz)
{
for (Class aClass : aClz)
{
registerPortableType(aClass);
}
return this;
}
/**
* Associate a user type with a type identifier and {@link PofSerializer}.
*
* @param nTypeId the type identifier of the specified user type; must be
* greater or equal to 0
* @param clz the user type to register with this PofContext; must
* not be null
* @param serializer the PofSerializer that will be used to serialize and
* deserialize objects of the specified class; must not be
* null
*
* @throws IllegalArgumentException on invalid type identifer, class, or
* PofSerializer
*/
public void registerUserType(int nTypeId, Class clz, PofSerializer serializer)
{
validateTypeId(nTypeId);
if (clz == null)
{
throw new IllegalArgumentException("Class cannot be null");
}
if (serializer == null)
{
throw new IllegalArgumentException("PofSerializer cannot be null");
}
Map mapTypeId = m_mapTypeId;
LongArray laClass = m_laClass;
LongArray laSerializer = m_laSerializer;
// add class-to-type identifier mapping
if (mapTypeId == null)
{
m_mapTypeId = mapTypeId = new HashMap();
}
mapTypeId.put(clz, Integer.valueOf(nTypeId));
// add type identifier-to-class mapping
if (laClass == null)
{
m_laClass = laClass = new SimpleLongArray();
}
laClass.set(nTypeId, clz);
// add type identifier-to-serializer mapping
if (laSerializer == null)
{
m_laSerializer = laSerializer = new SimpleLongArray();
}
laSerializer.set(nTypeId, serializer);
}
/**
* Unregister a user type that was previously registered using the specified
* type identifier.
*
* @param nTypeId the type identifier of the user type to unregister
*
* @throws IllegalArgumentException if the specified user type identifier is
* unknown to this PofContext
*/
public void unregisterUserType(int nTypeId)
{
Class clz = getClass(nTypeId);
Map mapTypeId = m_mapTypeId;
LongArray laClass = m_laClass;
LongArray laSerializer = m_laSerializer;
// remove class-to-type identifier mapping
if (mapTypeId != null)
{
mapTypeId.remove(clz);
if (mapTypeId.isEmpty())
{
mapTypeId = m_mapTypeId = null;
}
}
// remove type identifier-to-class mapping
if (laClass != null)
{
laClass.remove(nTypeId);
if (laClass.isEmpty())
{
laClass = m_laClass = null;
}
}
// remove type identifier-to-serializer mapping
if (laSerializer != null)
{
laSerializer.remove(nTypeId);
if (laSerializer.isEmpty())
{
laSerializer = m_laSerializer = null;
}
}
}
/**
* Set the flag specifying if Java 8 date/time types (java.time.*) should be
* preferred over legacy types.
*
* @param fPreferJavaTime whether Java 8 date/time types should be
*/
public void setPreferJavaTime(boolean fPreferJavaTime)
{
m_fPreferJavaTime = fPreferJavaTime;
}
// ----- internal methods -----------------------------------------------
/**
* Ensure that the given user type identifier is valid.
*
* @param nTypeId the user type identifier to validate
*
* @throws IllegalArgumentException if the given user type identifier is
* negative
*/
protected void validateTypeId(int nTypeId)
{
if (nTypeId < 0)
{
throw new IllegalArgumentException("negative user type identifier: "
+ nTypeId);
}
}
// ----- accessors ------------------------------------------------------
/**
* Determine if Identity/Reference type support is enabled for this
* SimplePofContext.
*
* @return true if Identity/Reference type support is enabled
*/
public boolean isReferenceEnabled()
{
return m_fReferenceEnabled;
}
/**
* Enable or disable POF Identity/Reference type support for this
* SimplePofContext.
*
* @param fEnabled true to enable POF Identity/Reference type support; false
* to disable
*/
public void setReferenceEnabled(boolean fEnabled)
{
m_fReferenceEnabled = fEnabled;
}
// ----- data members ---------------------------------------------------
/**
* A Map that contains mappings from a registered user type into type
* identifier.
*/
protected Map m_mapTypeId;
/**
* A LongArray of user types, indexed by type identifier.
*/
protected LongArray m_laClass;
/**
* A LongArray of PofSerializer objects, indexed by type identifier.
*/
protected LongArray m_laSerializer;
/**
* True if POF Identity/Reference type support is enabled.
*/
protected boolean m_fReferenceEnabled;
/**
* True if Java 8 date/time types (java.time.*) should be preferred over
* legacy types.
*/
protected boolean m_fPreferJavaTime;
}